Experience the LG Difference in HVAC - LG Air Conditioning Technologies
User Manual for LG models including: Single-Zone Four-Way Ceiling-Cassette Heat Pump Systems, LC098HV4, LC128HV4, LC188HV4, LC248HV, LC368HV, LC428HV
practices, building ventilation, owner's, and service manuals, visit www.lghvac.com. ... ay Ceiling-Cassette System Engineering Manual.
SINGLE-ZONE FOUR-WAY CEILING-CASSETTE SYSTEM ENGINEERING MANUAL Single-Zone Four-Way Ceiling-Cassette Heat Pump Systems 3/4 to 3-1/2 Tons LC188HV4 (18,000 Btu/h) LC368HV (36,000 Btu/h)
File Info : application/pdf, 71 Pages, 9.45MB
DocumentDocumentSingle-Zone Four-Way Ceiling-Cassette Heat Pump Systems
3/4 to 3-1/2 Tons
SINGLE-ZONE FOUR-WAY CEILING-CASSETTE SYSTEM
ENGINEERING MANUAL
LC098HV4 (9,000 Btu/h) LC128HV4 (12,000 Btu/h)
LC188HV4 (18,000 Btu/h) LC248HV (24,000 Btu/h)
LC368HV (36,000 Btu/h) LC428HV (42,000 Btu/h)
PROPRIETARY DATA NOTICE
This document, as well as all reports, illustrations, data, information, and other materials are the property of LG Electronics U.S.A., Inc., and are
disclosed by LG Electronics U.S.A., Inc. only in confidence. This document is for design purposes only.
A summary list of safety precautions is on page 3.
For more technical materials such as submittals, catalogs, installation, best practices, building ventilation, owner's, and service manuals, visit www.lghvac.com.
For continual product development, LG Electronics U.S.A., Inc., reserves the right to change specifications without notice. © LG Electronics U.S.A., Inc.
TABLE OF CONTENTS
Nomenclature.................................................................................................................................................................................................................. 4
LG Air Conditioner Technical Solution (LATS) ......................................................................................................................................................... 5-6
Four-Way Ceiling-Cassette Product Data................................................................................................................................................................ 7-43 0HFKDQLFDO6SHFL¿FDWLRQV ......................................................................................................................................................................................... 8-9 General Data ......................................................................................................................................................................................................... 10-12 Electrical Data ............................................................................................................................................................................................................ 13 Functions, Controls, and Options ............................................................................................................................................................................... 14 Outdoor Unit Dimensions ...................................................................................................................................................................................... 15-17 Indoor Unit Dimensions ......................................................................................................................................................................................... 18-21 Acoustic Data ........................................................................................................................................................................................................ 22-25 Refrigerant Flow Diagrams.................................................................................................................................................................................... 26-29 Wiring Diagrams .................................................................................................................................................................................................... 30-35 Electrical Connections ........................................................................................................................................................................................... 36-38 Air Velocity and Temperature Distribution.............................................................................................................................................................. 39-41 Accessories ........................................................................................................................................................................................................... 42-43
Four-Way Ceiling-Cassette Performance Data ..................................................................................................................................................... 44-57 Cooling Capacity ................................................................................................................................................................................................... 45-50 Heating Capacity ................................................................................................................................................................................................... 51-53 Maximum Heating Capacity................................................................................................................................................................................... 54-55 Equipment Selection Procedure ............................................................................................................................................................................ 56-57
Application Guidelines............................................................................................................................................................................................ 58-70 Placement Considerations..................................................................................................................................................................................... 59-66 Installing Outdoor Units Indoors ............................................................................................................................................................................ 67-69 Refrigerant Piping Design........................................................................................................................................................................................... 70
Introduction
TABLE OF SYMBOLS
DANGER
This symbol indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING This symbol indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION This symbol indicates a potentially hazardous situation which, if not avoided, will result in minor or moderate injury.
Note:
This symbol indicates situations that will result in equipment or property damage accidents only.
This symbol indicates an action that should not be performed.
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INTRODUCTION | 3
UNIT NOMENCLATURE
Four-Way Ceiling-Cassette System Engineering Manual
Indoor Units and Outdoor Units
L = LG
L
C
N
188
H
Frame Type: A: Art CoolTM S: Standard C: Four-Way Ceiling-Cassette D: Ceiling-Concealed Duct (Low Static) H: Ceiling-Concealed Duct (High Static) V: Vertical-Horizontal Air Handling
N: Indoor Unit U: Outdoor Unit No N or U: System
Nominal Capacity
(Nominal cooling capacity in Btu/h):
9 = 9,000
36 / 368 / 369 = 36,000
12 = 12,000
42 / 428 / 429 = 42,000
18 / 188 / 189 = 18,000 48 = 48,000
24 / 248 / 249 = 24,000 54 = 54,000
30 = 30,000
System Type: H = Heat Pump
Style: SV = High Efficiency Inverter VP = Gallery YV = Premier EV = Mega XV = Mega 115V V = Standard Inverter T = Thermostat Compatible LV = Extended Piping
Generation:
V
4
4 | INTRODUCTION
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Introduction
LG AIR CONDITIONER TECHNICAL SOLUTION (LATS)
LG Air Conditioner Technical Solution (LATS) Software
A properly designed and installed refrigerant piping system is critical to the optimal performance of LG air-conditioning systems. To assist engineers, LG offers, free of charge, LG Air Conditioner Technical Solution (LATS) software--a total design solution for LG air conditioning systems. Contact your LG Rep for the best software program for your application.
To reduce the risk of designing an improper applied system or one that will not operate correctly, LG requires that LATS software be used on all projects.
Formats LATS is available to LG customers in three user interfaces: LATS HVAC, LATS CAD2, and LATS Revit. All three LATS formats are available through www.myLGHVAC.com, or contact an LG Sales Representative.
LATS HVAC is a Windows®-based application that aids engineers in designing LG Variable Refrigerant Flow (VRF), Multi F / Multi F MAX, Single-Zone, and Energy Recovery Ventilator (ERV) systems.
*Windows® is a registered mark of Microsoft® Corporation.
LATS CAD2 combines the LG LATS program with AutoCAD® software**. It permits engineers to layout and validate LG Multi V Variable Refrigerant Flow (VRF), Multi F / Multi F MAX, Single-Zone, and Energy Recovery Ventilator (ERV) systems directly into CAD drawings.
Figure 1: Example of LATS CAD2.
LATS Revit integrates the LG LATS program with Revit® software**. It permits engineers to layout and validate Multi V VRF systems directly into Revit drawings.
**AutoCAD® and Revit® are both registered marks of Autodesk, Inc.
Features All LG product design criteria have been loaded into the program, making LATS simple to use: double click or drag and drop the component choices. Build systems in Tree Mode where the refrigerant system can be viewed. Switch to a Schematic diagram to see the electrical and communications wiring.
LATS software permits the user to input region data, indoor and outdoor design temperatures, modify humidity default values, zoning, specify type and size of outdoor units and indoor units, and input air flow and external static pressure (ESP) for ducted indoor units.
The program can also:
· Import building loads from a separate Excel file. · Present options for outdoor unit auto selection. · Automatically calculate component capacity based on design
conditions for the chosen region. · Verify if the height differences between the various system
components are within system limits. · Provide the correct size of each refrigerant piping segment and LG
Y-Branches and Headers.
· Adjust overall piping system length when elbows are added. · Check for component piping limitations and flag if any parameters
are broken. · Factor operation and capacity for defrost operation. · Calculate refrigerant charge, noting any additional trim charge. · Suggest accessories for indoor units and outdoor units. · Run system simulation.
Features depend on which LATS program is being used, and the type of system being designed.
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INTRODUCTION | 5
Four-Way Ceiling-Cassette System Engineering Manual
LG AIR CONDITIONER TECHNICAL SOLUTION (LATS)
LATS Generates a Complete Project Report
LATS software also generates a report containing project design parameters, cooling and heating design data, system component performance, and capacity data. The report includes system combination ratio and refrigerant charge calculations; and provides detailed bill of material, including outdoor units, indoor units, control devices, accessories, refrigerant pipe sizes segregated by building, by system, by pipe size, and by pipe segments. LATS can generate an Excel GERP report that can imported into the LG SOPS pricing and ordering system.
Proper Design to Install Procedure
LG encourages a two report design-to-install-procedure. After the design engineer determines building / zone loads and other details, the engineer opens the LATS program and inputs the project's information. When the design is complete, the "Auto Piping" and "System Check" functions must be used to verify piping sizes, limitations, and if any design errors are present. If errors are found, engineers must adjust the design, and run Auto Piping and System Check again. When the design passes the checks, then the engineer prints out a project "Shop Drawing" (LATS Tree Diagram) and provides it to the installing contractor. The contractor must follow the LATS Tree Diagram when building the piping system, but oftentimes the design changes on the building site:
Figure 2: Example of a LATS Tree Diagram.
· Architect has changed location and/or purpose of room(s). · Outdoor unit cannot be placed where originally intended. · Structural elements prevent routing the piping as planned. · Air conditioning system conflicts with other building systems (plumbing, gas lines, etc.).
The contractor must mark any deviation from the design on the Shop Drawing, including as-built straight lines and elbows. This "Mark Up" drawing must be returned to the design engineer or Rep, who must input contractor changes into the LATS file. (Copy the original LATS software file, save and rename as a separate file, and modify all piping lengths by double-clicking on each length and editing information.) Like the shop drawing, the Auto Piping and System Check must also be run on this new "As Built" drawing. The design engineer or Rep must then provide the final As Built file to the contractor. The Mark Up version must be compared to the As Built version for:
· Differences in pipe diameter(s). If incorrect diameters have been installed, the piping must be changed out. If pipe diameters have changed, check to see if Y-Branches will also need to be changed.
· Changes to outdoor unit and indoor unit capacities. Capacities changes will impact line length changes.
· Additional refrigerant charge quantity ("Trim Charge"). Trim charge will change if piping lengths and diameters change. The As Built version must reflect installed piping lengths to ensure correct trim charge.
All documents submitted by the contractor, as well as the Shop Drawing and the As Built Drawing files must be provided for commissioning purposes. Model and serial numbers for all system components must also be submitted. If the steps previously detailed are not followed, and all documents are not provided to the commissioning agent, the project runs the risk of not being commissioned and voiding any limited warranty LG offers on the equipment.
Contact your LG representative for the best software program for your application.
6 | INTRODUCTION
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PRODUCT DATA
Mechanical Specifications on page 8 General Data on page 10 Electrical Data on page 13 Functions, Controls, and Options on page 14 Dimensions on page 15 Acoustic Data on page 22 Refrigerant Flow Diagrams on page 26 Wiring Diagrams on page 30 Electrical Connections on page 36 Air Velocity and Temperature Distribution on page 39 Accessories on page 43
MECHANICAL SPECIFICATIONS
Four-Way Ceiling-Cassette System Engineering Manual
General
System LG single zone four-way ceiling cassette system comprises of a single frame outdoor unit connected to a single indoor unit with a single refrigerant circuit. An LG single zone four-way ceiling cassette is a system that can operate in either cooling or heating mode. The system is capable of changing mode within a maximum time of three (3) minutes to ensure indoor temperature can be properly maintained. LG components are manufactured in a facility registered to ISO 9001 and ISO 14001, which is a set of standards applying to environmental protection set by the International organization for Standardization (ISO). The system components comply with CSA Standard for Safety and bear the CSA label. Wiring in these units are in accordance with the national Electrical Code (NEC). LG single zone four-way ceiling cassette systems have published performance ratings certified by AHRI (Air-Conditioning, Heating, and Refrigeration Institute) and are listed in the AHRI Standard 210 / 240 certified product directory.
Outdoor Unit The outdoor units have sound levels not exceeding 54 dB(A) tested in an anechoic chamber under ISO Standard 3745. Indoor Unit The indoor units have sound ratings no higher than 47 dB(A) as tested per ISO Standard 3745.
Temperature Ranges
9,000 and 12,000 Btu/h Ceiling Cassette Operating Ranges · Operating ranges for outdoor units of 0°F to +118°F (DB) for cool-
ing (Cooling range can be extended from 0°F down to -4°F using the Low Ambient Wind Baffle Kit [sold separately]); -4°F to +64°F (WB) for heating. · Operating ranges for indoor units of 57°F to 77°F (WB) for cooling; 59°F to 81°F (DB) for heating. · Indoor unit temperature setting range of 65°F to 86°F (DB) for cooling; 61°F to 86°F (WB) for heating.
18,000, 24,000, 36,000, and 42,000 Btu/h Ceiling Cassette Operating Ranges · Operating ranges for outdoor units of 5°F to +118°F (DB) for cool-
ing (Cooling range can be extended from 5°F down to -4°F using the Low Ambient Wind Baffle Kit [sold separately]); -4°F to +64°F (WB) for heating. · Operating ranges for indoor units of 57°F to 77°F (WB) for cooling; 59°F to 81°F (DB) for heating. · Indoor unit temperature setting range of 65°F to 86°F (DB) for cooling; 61°F to 86°F (WB) for heating.
Casing / Frame
Outdoor Unit The outdoor condensing unit case is constructed from pre-coated metal (PCM) that has been tested in accordance with ASTM B-117
salt spray procedure for a minimum of 1,000 hours. Case has a removable panel to allow access to major internal components, and legs to secure the unit during installation.
Figure 3: Four-Way Ceiling Cassette System (LC098HV4 and LC128HV4 Models).
Indoor Unit
The indoor unit case is constructed of a galvanized steel plate designed to recess in the ceiling, and has a surface mounted concentric grille on the bottom of the unit. Unit has four supply air outlets and one return air inlet. The supply air outlet has four-directional slot diffusers, each equipped with an independent oscillating motorized guide vane to change airflow direction. A guide vane algorithm sequentially changes the predominant discharge airflow direction in counterclockwise pattern, or can be used to lock each guide vane independently in a fieldadjusted fixed position. The four vanes can be individually adjusted from the wired remote controller to customize the airflow pattern for the conditioned space. A setting in the cooling and heating modes can cycle the vanes up and down for uniform / random air distribution.
A required architectural grille is sold as a separate required accessory. The four-way grille is off-white acrylonitrile butadiene styrene (ABS) polymeric resin with a tapered trim edge.
Refrigerant System
The system is designed for use with R410A refrigerant, and consists of a single refrigeration circuit. The refrigeration circuit is pressuretested at the factory and shipped with a holding charge of helium gas. The outdoor unit is provided with factory installed components, including a refrigerant strainer, accumulator, four-way reversing valve, electronic expansion valve (EEV), high and low side charging ports, service valves, and interconnecting piping. All refrigerant lines from the outdoor unit to the indoor unit are field-installed and must be insulated separately.
Compressors
The 9,000 ~ 24,000 Btu/h outdoor units are equipped with one hermetically sealed, digitally controlled, inverter-driven twin rotary compressor to modulate capacity (modulation in 1 Hz increments). The 36,000 and 42,000 Btu/h outdoor units are equipped with one hermetically sealed, digitally controlled, inverter-driven scroll compressor to modulate capacity (modulation in 1 Hz increments). Teflon coated bearings, overcurrent protection and vibration isolation are integrated with the compressor.
8 | PRODUCT DATA
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MECHANICAL SPECIFICATIONS
Product Data
Frequency ranges for the 9,000 ~ 24,000 Btu/h outdoor units are: 9k Btu/h = 20 Hz to 100 Hz 12k Btu/h = 20 Hz to 100 Hz 18k Btu/h = 15 to 80 Hz Cooling; 15 to 100 Hz Heating 24k Btu/h = 15 to 80 Hz Cooling; 15 to 100 Hz Heating
Frequency ranges for the 36,000 and 42,000 Btu/h outdoor units are: 36k Btu/h = 15 to 120 Hz Cooling; 15 to 130 Hz Heating 42k Btu/h = 20 Hz to 100 Hz
Coil
Outdoor Unit Heat pump outdoor unit coils are made of nonferrous louvered aluminum fins protected with an integral coil guard. The coil for each outdoor unit has a minimum of 14 fins per inch (FPI); heat exchanger has two rows. The coil fins have a factory applied corrosion resistant GoldFinTM material with hydrophilic coating tested in accordance with ASTM B-117 salt spray test procedure for a minimum of 1,000 hours. Coils are factory tested to a pressure of 551 psig.
Indoor Unit Indoor unit coils are factory built and are comprised of aluminum fins mechanically bonded to copper tubing. Each indoor unit has a minimum of two rows of coils, which are pressure tested to 551 psig at the factory. Each unit is provided with a factory installed condensate drain pan below the coil.
Fans and Motors
Outdoor Unit The 9,000 Btu/h (LUU097HV), 12,000 Btu/h (LUU127HV), 18,000 Btu/h (LUU189HV),and 24,000 Btu/h (LUU249HV) outdoor units include one direct drive, variable speed axial / propeller type fan with a horizontal air discharge; the 36,000 Btu/h (LUU369HV) and 42,000 Btu/h (LUU429HV) include two fans. Fan blades are made of Acrylonitrile Butadiene Styrene (ABS) material, and have a Brushless Digitally Controlled (BLDC) fan motor. The fan motor has inherent protection, permanently lubricated bearings, and variable speed with a maximum speed up to 950 rpm. Raised guards are provided to limit contact with moving parts.
Indoor Unit All of the indoor units have a single, direct-drive, turbo fan manufactured of high-strength ABS HT-700 polymeric resin; the fans are statically and dynamically balanced. The fan motor is brushless digitally controlled (BLDC) with permanently lubricated and sealed ball bearings. The fan / motor assembly is mounted on vibrationattenuating rubber grommets. Fan speed is controlled using a microprocessor-based direct digital control algorithm that provides pre-programmed, field-selectable fixed or auto fan speeds in the Heating and Cooling modes.
The indoor fan has Low, Med, High, Power Cool and Auto settings for Cooling mode; and has Low, Med, High, and Auto settings for Heating mode. Auto setting adjusts the fan speed based on the difference between the controller set-point and space temperature.
Figure 4: Four-Way Ceiling Cassette System (LC368HV, LC428HV Models).
Air Filter Indoor Unit
Return air is filtered with a factorysupplied, removable, washable filter accessible from the bottom of the unit. For 2' x 2' cassettes the removable washable filter size is 14" x 14" x 1."
For 3' x 3' cassettes the removable washable filter size is 20.5" x 20.5" x 1."
Electrical
The system was designed to operate using 208230/60/1 power with voltage variances of ±10% and includes overcurrent protection. The indoor unit is powered through the outdoor unit.
Controls
Indoor and outdoor units are factory wired with necessary electrical control components, printed circuit boards, thermistors, sensors, terminal blocks, and lugs for power wiring. Factory installed microprocessor controls in the outdoor unit and indoor unit shall perform functions to efficiently operate the single zone system, communicating via a 14 AWG four-conductor, stranded, shielded or unshielded (if shielded, must be grounded to the chassis at the outdoor unit only) power/transmission cable (and must comply with applicable local and national codes. Microprocessor-based algorithms provide component protection, soft-start capability, refrigeration system pressure, temperature, defrost, and ambient control. System can be operated through a handheld wireless controller supplied with the four-way ceiling cassette indoor unit.
Condensate Lift/Pump
The indoor unit is provided with a factory installed and wired condensate lift/pump capable of providing a maximum 31-1/2 inch lift from the bottom surface of the unit. Drain pump has a safety switch to shut off the indoor unit if the condensate rises too high in the drain pan.
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PRODUCT DATA | 9
Four-Way Ceiling-Cassette System Engineering Manual
GENERAL DATA
Pairing Table
The following table shows the available outdoor and indoor unit, along with the factory provided controller.
Table 1: Four-Way Ceiling Cassette System Pairing Table
Outdoor Unit Model
LUU097HV LUU127HV
Indoor Unit Model
LCN098HV4 LCN128HV4
Controller PQWRHQ0FDB
LUU189HV
LCN188HV4
PQWRHQ0FDB
LUU249HV
LCN248HV
PQWRHQ0FDB
LUU369HV LUU429HV
LCN368HV LCN428HV
PQWRHQ0FDB
10 | PRODUCT DATA
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GENERAL DATA
Product Data
Table 2: Four-Way 2 x 2 Ceiling Cassette System General Data.
Type
System (Model) (Indoor Unit / Outdoor Unit)
Ceiling Grille Model Number (Sold Separately)
Cooling Capacity (Min/Rated/Max) (Btu/h)
Cooling Power Input1 (kW)
EER (OD 95°F)
SEER
Heating Capacity (Min/Rated/Max) (Btu/h)
Heating Power Input1 (kW)
COP (OD 47°F)
HSPF
Rated Low Heating Capacity (Btu/h)
Outdoor 17°F (WB)/Indoor 70°F (DB)
Low COP (OD 17°F)
Maximum Heating Capacity (Btu/h)
Outdoor 17°F (DB)/Indoor 70°F (DB)
Outdoor 5°F (DB)/Indoor 70°F (DB)
Outdoor -4°F (DB)/Indoor 70°F (DB)
Power Supply V, Ø, Hz2
Outdoor Unit Operating Range
Cooling (°F DB)
Heating (°F WB)
Indoor Unit Operating Range
Cooling (°F WB)
Heating (°F DB)
Indoor Temperature Setting Range
Cooling (°F DB)
Heating (°F WB)
Unit Data
Refrigerant Type3 / Refrigerant Control
Indoor Unit Sound Pressure Level ±1 dB(A) (H/M/L)4
Outdoor Unit Sound Pressure Level ±1 dB(A) (Cool/Heat)4
Indoor Unit Net / Shipping Weight (lbs.)
Outdoor Unit Net / Shipping Weight (lbs.)
Grille Net / Shipping Weight (lbs.)
Power Wiring / Communications Cable (No. x AWG)2
Compressor (Type x Qty.)
Dehumidification Rate (pts./hr.)
Fan
Indoor Unit Type x Qty. / Outdoor Unit Type x Qty.
Motor / Drive
Airflow Rate
Indoor Unit (H / M / L [CFM])
Outdoor Unit (CFM)
Piping
Liquid (in.)
Connection Size Pipe Size
Vapor (in.)
Connection Size Pipe Size
Indoor Unit Condensate Drain O.D. / I.D. (in.)
Additional Refrigerant Charge (oz./ft.)
Maximum Pipe Length (ft.)
Piping Length5 (no additional refrigerant, ft.)
Maximum Elevation Difference (ft.)
Single Zone 2 x 2 Four-Way Ceiling Cassette
LC098HV4
LC128HV4
LC188HV4
(LCN098HV4 / LUU097HV) (LCN128HV4 / LUU127HV) (LCN188HV4 / LUU189HV)
PT-UQC / PT-QCHW0 PT-UQC / PT-QCHW0 PT-UQC / PT-QCHW0
3,600 ~ 9,000 ~ 9,900
3,400 ~ 11,100 ~ 12,400 7,700 ~ 18,000 ~ 24,800
0.19 ~ 0.66 ~ 0.83
0.25 ~ 0.88 ~ 1.1
0.54 ~ 1.44 ~ 2.60
13.65
12.6
12.5
20.2
19.4
20.5
4,400 ~ 11,000 ~ 12,100 2,800 ~ 14,000 ~ 15,500 6,500 ~ 18,500 ~ 23,400
0.15 ~ 0.83 ~ 1.05
0.22 ~ 1.19 ~ 1.5
0.50 ~ 1.95 ~ 2.60
3.88
3.44
2.78
10.5
10.4
10
7,000 2.92
9,100 2.7
12,700 2.38
9,350 8,250 7,040
11,900 10,500 8,960 208-230 / 1 / 60
17,000 15,000 13,000
0 to +1186 -4 to +64
0 to +1186 -4 to +64
5 to +1186 -4 to +64
57 to 77 59 to 81
57 to 77 59 to 81
57 to 77 59 to 81
65 to 86 61 to 86
65 to 86 61 to 86
65 to 86 61 to 86
36 / 33 / 30 47 / 51 31 / 37 82 / 89 7 / 9 4 x 14
Twin Rotary x 1 1.6
R410A / EEV 38 / 35 / 32
49 / 52 31 / 37 82 / 89 7 / 9 4 x 14 Twin Rotary x 1 2.47
41 / 39 / 36 48 / 52
31.5 / 40.0 127.8 / 140.0
7 / 9 4 x 14 Twin Rotary x 1
3.3
Turbo x 1 / Axial x 1 Brushless Digitally Controlled / Direct
300 / 265 / 230 988
335 / 283 / 247 988
460 / 424 / 388 2,048
1/4 1/4 3/8 3/8 1-1/4 / 1 0.22 66 24.6 49
1/4 3/8 1/2 5/8 1-1/4 / 1 0.43 164 24.6 98.4
EEV: Electronic Expansion Valve, IDU: Indoor Unit, ODU: Outdoor Unit. Unit comes with a dry helium charge. This data is rated 0 ft above sea level, with 24.6 ft of refrigerant line per indoor unit and a 0 ft level difference between outdoor and indoor units. Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb (DB) and 67ºF wet bulb (WB); and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB). Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60ºF wet bulb (WB); and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 1Power Input is rated at high speed. 2All power wiring/communication cables from ODU to IDU are field supplied and are to be minimum 14
AWG, 4-conductor, stranded, shielded or unshielded (if shielded, must be grounded to chassis at ODU only), and must comply with applicable local and national codes. 3Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or destroy R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F) under section 608 of CAA. 4Sound pressure levels are tested in an anechoic chamber under ISO Standard 3745. 5Piping lengths are equivalent. 6Cooling range can be extended from 0°F or 5°F down to -4°F using the Low Ambient Wind Baffle Kit (sold separately).
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PRODUCT DATA | 11
GENERAL DATA
Four-Way Ceiling-Cassette System Engineering Manual
Table 3: Four-Way 3 x 3 Ceiling Cassette System General Data.
Type
System (Model) (Indoor Unit / Outdoor Unit)
Ceiling Grille Model Number (Sold Separately) Cooling Capacity (Min/Rated/Max) (Btu/h) Cooling Power Input1 (kW) EER (OD 95°F) SEER Heating Capacity (Min/Rated/Max) (Btu/h) Heating Power Input1 (kW) COP (OD 47°F) HSPF Rated Low Heating Capacity (Btu/h) Outdoor 17°F (WB)/Indoor 70°F (DB) Low COP (OD 17°F)
Single Zone 3 x 3 Four-Way Ceiling Cassette
LC248HV
LC368HV
LC428HV
(LCN248HV / LUU249HV) (LCN368HV / LUU369HV) (LCN428HV / LUU429HV)
PT-UMC1
PT-UMC1
PT-UMC1
9,600~24,000~28,000
14,400~36,000~42,000
16,800~42,000~48,700
0.48 ~ 1.90 ~ 3.04
0.72 ~ 2.88 ~ 3.90
1.16 ~ 4.07 ~ 5.5
12.60
12.50
10.32
20.0
19.0
17.8
10,800~27,000~30,000
16,000~40,000~42,200
18,800~47,000~49,800
0.58 ~ 2.30 ~ 3.20
0.80 ~ 3.20 ~ 4.20
1.17 ~ 4.09 ~ 4.93
3.52
3.66
3.37
10.5
9.5
9.0
17,500 2.73
24,000 2.69
26,000 2.52
Maximum Heating Capacity (Btu/h)
Outdoor 17°F (DB)/Indoor 70°F (DB)
Outdoor 5°F (DB)/Indoor 70°F (DB)
Outdoor -4°F (DB)/Indoor 70°F (DB)
Power Supply V, Ø, Hz2
Outdoor Unit Operating Range
Cooling (°F DB)
Heating (°F WB)
Indoor Unit Operating Range
Cooling (°F WB)
Heating (°F DB)
Indoor Temperature Setting Range
Cooling (°F DB)
Heating (°F WB)
Unit Data
Refrigerant Type3 / Refrigerant Control
IDU Sound Pressure Level ±1 dB(A) (H/M/L)4
ODU Sound Pressure Level ±1 dB(A) (Cool/Heat)4
Indoor Unit Net / Shipping Weight (lbs.)
Outdoor Unit Net / Shipping Weight (lbs.)
Grille Net / Shipping Weight (lbs.)
Power Wiring / Comm. Cable (No. x AWG)2
Compressor (Type x Qty.)
Dehumidification Rate (pts./hr.)
Fan
Indoor Unit Type x Qty. / Outdoor Unit Type x Qty.
Motor / Drive
Airflow Rate
Indoor Unit (H / M / L [CFM])
Outdoor Unit (CFM)
Piping
Liquid (in.)
Connection Size Pipe Size
Vapor (in.)
Connection Size Pipe Size
Indoor Unit Condensate Drain O.D. / I.D. (in.)
Additional Refrigerant Charge (oz./ft.)
Maximum Pipe Length (ft.)
Piping Length5 (no additional refrigerant, ft.)
Maximum Elevation Difference (ft.)
26,000 23,600 20,760
38,000 35,000 31,450 208-230 / 1 / 60
41,500 40,000 38,230
5 to +1186 -4 to +64
57 to 77 59 to 81
65 to 86 61 to 86
38 / 36 / 34 48 / 52
47.2 / 57.3 130.0 / 143.3
14 / 21
Twin Rotary x 1 4.5
R410A / EEV 46 / 43 / 40
52 / 54 54.2 / 68.3 198.9 / 223.1
14 / 21 4 x 14
7.6
Scroll x 1
47 / 44 / 41 52 / 54
54.2 / 68.3 198.9 / 223.1
14 / 21
10.1
Turbo x 1 / Propeller x 1
Turbo x 1 / Propeller x 2
Brushless Digitally Controlled / Direct
600 / 530 / 459 2,048
1,059 / 883 / 706 3,884
1,165 / 989 / 777 3,884
3/8
3/8
3/8
3/8
3/8
3/8
5/8
5/8
5/8
5/8
5/8
5/8
1-1/4 / 1
0.43
164
246
24.6
98.4
EEV: Electronic Expansion Valve, IDU: Indoor Unit, ODU: Outdoor Unit. Unit comes with a dry helium charge. This data is rated 0 ft above sea level, with 24.6 ft of refrigerant line per indoor unit and a 0 ft level difference between outdoor and indoor units. Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb (DB) and 67ºF wet bulb (WB); and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB). Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60ºF wet bulb (WB); and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 1Power Input is rated at high speed. 2All power wiring/communication cables from ODU to IDU are field supplied and are to be minimum 14
AWG, 4-conductor, stranded, shielded or unshielded (if shielded, must be grounded to chassis at ODU only), and must comply with applicable local and national codes. 3Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or destroy R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F) under section 608 of CAA. 4Sound pressure levels are tested in an anechoic chamber under ISO Standard 3745. 5Piping lengths are equivalent. 6Cooling range can be extended from 5°F down to -4°F using the Low Ambient Wind Baffle Kit (sold separately).
12 | PRODUCT DATA
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ELECTRICAL DATA
Table 4: Electrical Data.
Nominal Tons
Unit Model No.
Voltage Hertz Voltage Range
(Min. to Max.)
2 x 2 Four-Way Ceiling Cassettes
3/4
LUU097HV
1
LUU127HV
60
1-1/2
LUU189HV
3 x 3 Four-Way Ceiling Cassettes
2
LUU249HV
3
LUU369HV
60
3-1/2
LUU429HV
208 - 230 208 - 230
187 - 253 187 - 253
Voltage tolerance is ±10%. Maximum allowable voltage unbalance is 2%. RLA = Rated Load Amps.
MCA
MOP
Compressor Quantity
Compressor Motor RLA (Cooling)
Condenser Fan Motor(s)
Condenser Condenser Fan Fan Quantity. Motor FLA
11.9
15
9.0
0.25
12.3
1
1
20
30
13.5
1.6
20
30
13.5
1
1.6
32
40
1
22
2
1.6 x 2
MCA = Minimum Circuit Ampacity. Maximum Overcurrent Protection (MOP) is calculated as follows: (Largest motor FLA x 2.25) + (Sum of other motor FLA) rounded down to the nearest standard fuse size.
Product Data
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PRODUCT DATA | 13
FUNCTIONS, CONTROLS, AND OPTIONS
Four-Way Ceiling-Cassette System Engineering Manual
Convenience
Reliability
Operation
Filters
$LUÀRZ
Table 5: Functions, Controls and Options.
System Type Air Supply Outlets
Airflow Direction Control (Up and Down)
Auto Swing (Up and Down)
Airflow Steps (Fan / Cool / Heat) Comfort Air (Random Fan Speed) Jet Cool Swirl Wind
Washable Anti-fungal1
Drain Pump High Ceiling Operation2 Auto Elevation Grille2 Hot Start Self Diagnostics Auto Changeover Auto Restart Child Lock Forced Operation Sleep Mode Timer (on/off) Weekly Schedule Two Thermistor Control Defrost / Deicing High Pressure Sensor Phase Protection Restart Delay (3-minutes) Self Diagnosis Soft Start Night Quiet Operation Mode Lock Pump Down (Forced Cooling Operation) Network Solution (LGAP) Programmable Controllers (MultiSITE CRC1 / CRC1+) Simple Remote Controller Premium Remote Controller Wireless Handheld Remote Controller Remote Temperature Button Sensor Dry Contact AC Smart 5
ACP 5
PI-485
2x2 Ceiling Cassette 4
Auto
¥ 4 / 5 / 4
¥ ¥ ¥
¥
¥ o X ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ X ¥ ¥ ¥ ¥ ¥ ¥ ¥ o (PREMTBVC0 / PREMTBVC1) o (PREMTC00U) o (PREMTA000) ¥34:5+4)'% o (ZRTBS01) o (PDRYCB100 / 320 / 400)
o (PACS5A000)
o (PACP5A000)
o (PMNFP14A1)
Special Central Controllers / Remote Function Integration Solutions Controllers
MultiSITE Communications Manager
o (PBACNBTR0A)
MultiSITE VM3 Wi-Fi3 Aux. Heat Relay Kit
o (PBACNBTR1A) o3
o (PRARH1)
¥ 6WDQGDUGIHDWXUH o = Unit option X = Not Available
1Primary washable filter. 14"x14"x1" for 2x2 units; 20.5"x20.5"x1" for 3x3 units. 2Requires wired zone controller. 3Requires Wi-Fi module PWFMDD200.
3x3 Ceiling Cassette 4
Auto
¥ 4 / 5 / 4
¥ ¥ ¥
¥
¥ o o ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ X ¥ ¥ ¥ ¥ ¥ ¥ ¥ o (PREMTBVC0 / PREMTBVC1) o (PREMTC00U) o (PREMTA000) ¥34:5+4)'% o (ZRTBS01) o (PDRYCB100 / 320 / 400) o (PACS5A000)
o (PACP5A000)
o (PMNFP14A1)
o (PBACNBTR0A)
o (PBACNBTR1A)
o3
o (PRARH1)
14 | PRODUCT DATA
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1-3/16 11-11/32 31/32 15/16
OUTDOOR UNIT DIMENSIONS
LUU097HV, LUU127HV
Figure 5: LUU097HV, LUU127HV Outdoor Unit Dimensions.
17-11/16 2-9/16
10 7-1/2
13/16
4-3/32
22-3/16
4 Holes for Anchor Bolts (M 13/32)
1
6-5/8 1-1/16
15-11/16 19-11/16
30-5/16
Product Data
2-23/32
4 - LD. 25/32 Holes for drain connection
9-29/32
5/8 21-15/32
15/16
17-11/16
6
2-3/32 5-21/32
13/16
12-31/32
13-29/32
3D View
4-25/32 2
Side View
(Valve Cover Removed)
3 5
4
8-25/32 2-3/4
4-7/16 1-11/32
2-3/32
1-13/32
1-7/32 1-29/32 2
No. Part Name 1 Air outlet 2 Control cover & service valve cover 3 Vapor pipe connection 4 Liquid pipe connection 5 Conduit 6 Handle 7 Intake air temperature sensor cover
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7
[Unit: inch]
PRODUCT DATA | 15
OUTDOOR UNIT DIMENSIONS
LUU189HV, LUU249HV
Figure 6: LUU189HV, LUU249HV Outdoor Unit Dimensions.
Four-Way Ceiling-Cassette System Engineering Manual
16 | PRODUCT DATA
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OUTDOOR UNIT DIMENSIONS
LUU369HV, LUU429HV
Figure 7: LUU369HV, LUU429HV Outdoor Unit Dimensions.
Product Data
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PRODUCT DATA | 17
Unit: Inch (mm])
Four-Way Ceiling-Cassette System Engineering Manual
2-51/64 4-17/32 (71) (115)
7/64 (3)
2-3/4 (70)
INDOOR UNIT DIMENSIONS
LCN098HV4, LCN128HV4
Figure 8: LCN098HV4, LCN128HV4 Indoor Unit Dimensions.
9-19/64 (236)
7-61/64 (202)
7-61/64 (202)
5-29/32 (150)
4-17/32 2-51/64 (115) (71)
5-29/32 (150)
Max. Condensate Lift: 31-1/2 (800) or less
23-5/8 (600) (Ceiling Opening) 20-23/64 (517) (Hanging Bolt)
10-13/64 (259)
63/64 (25)
10-13/64 (259) 18-5/32 (461) (Hanging Bolt)
22-7/16 (570)
24-13/32 (620) 14-29/32 (379) (Air Outlet Hole)
14-29/32 (379) (Air Outlet Hole)
24-13/32 (620)
63/64 (25)
7-13/64 (183)
1-11/32 (34)
3-21/32 (93)
6-1/16 (154)
1-3/16 (30)
1-31/32 (50)
5-19/32 (142)
10-13/64 (259) 20-19/32 (523) (Hanging Bolt)
24-13/32 (620)
24-13/32 (620)
13121
23-5/8 (600) (Ceiling Opening) 20-23/64 (517) (Hanging Bolt) 10-13/64 (259)
PT-QCHW0 22-7/16 (570)
18 | PRODUCT DATA
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Figure 9: LCN188HV4 Indoor Unit Dimensions.
INDOOR UNIT DIMENSIONS
LCN188HV4
Unit: Inch (mm)
7/64 (3) 2-3/4 (70)
5-29/32 (150)
11 (279) 7-61/64 (202)
7-61/64 (202)
6-3/16 2-51/64 (157) (71)
7-9/16 (192)
Max. Condensate Lift: 31-1/2 (800) or less
23-5/8 (600) (Ceiling Opening) 20-23/64 (517) (Hanging Bolt) 10-13/64 (259)
63/64 (25)
23-5/8 (600) (Ceiling Opening) 20-23/64 (517) (Hanging Bolt)
10-13/64 (259)
10-13/64 (259) 18-5/32 (461) (Hanging Bolt)
22-7/16 (570) 5-19/32 (142) 1-31/32 (50) 1-3/16 (30)
24-13/32 (620) 14-29/32 (379) (Air Outlet Hole)
14-29/32 (379) (Air Outlet Hole)
24-13/32 (620)
63/64 (25)
7-13/64 (183)
1-11/32 (34) 3-1/2 (89) 6-1/16 (154)
10-13/64 (259) 20-19/32 (523) (Hanging Bolt)
24-13/32 (620)
24-13/32 (620)
13121
Product Data
PT-QCHW0 22-7/16 (570)
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PRODUCT DATA | 19
INDOOR UNIT DIMENSIONS
LCN248HV
Figure 10: LCN248HV Indoor Unit Dimensions.
Four-Way Ceiling-Cassette System Engineering Manual
20 | PRODUCT DATA
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INDOOR UNIT DIMENSIONS
LCN368HV, LCN428HV
Figure 11: LCN368HV, LCN428HV Indoor Unit Dimensions.
Product Data
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PRODUCT DATA | 21
ACOUSTIC DATA
Indoor Units
Four-Way Ceiling-Cassette System Engineering Manual
Figure 12: Indoor Unit Sound Pressure Level Measurement Location.
4.9 ft.
Ceiling
Microphone
Figure 13: Four-Way Ceiling Cassette Indoor Unit Sound Pressure Level Diagrams.
LCN098HV4
90
80
· Measurements taken with no attenuation and units operating at full load normal operating condition.
· Sound level will vary depending on a range of factors such as construction (acoustic absorption coefficient) of particular area in which the equipment is installed.
· Sound pressure levels are measured in dB(A)±1.
· Tested in anechoic chamber per ISO Standard 3745.
Table 6: Four-Way Ceiling Cassette Indoor Unit Sound Levels (dB[A]).
Model
LCN098HV4 LCN128HV4 LCN188HV4 LCN248HV LCN368HV LCN428HV
Sound Pressure Levels (dB[A])
H
M
L
36
33
30
38
35
32
41
39
36
38
36
34
46
43
40
47
44
41
Sound Power Levels (dB[A]) H 57 62 64
LCN128HV4
LCN188HV4
80 70
Sound pressure level (0 dB = 20 Pa)
Sound Pressure Level (dB re 20uPa)
70 60 50 40 30 20 10
63
NC-70 NC-65 NC-60 NC-55 NC-50 NC-45 NC-40 NC-35 NC-30 NC-25 NC-20 NC-15 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
NC-65 60
NC-60
NC-55 50
NC-50
NC-45 40
NC-40
NC-35 30
NC-30
20
NC-25
Approximate Hearing
NC-20
Threshold 10
NC-15
63 125 250 500 1000 2000 4000 8000
Octave band center frequency (Hz)
LCN248HV
80
70
LCN368HV
80
High
75
Y Middle Low
70
LCN428HV
Octave Band Sound Pressure Level (dB = 20Pa )
Octave Band Sound Pressure Level (0dB = 20Pa)
NC-65 60
NC-60
50
NC-55
NC-50
40
NC-45
NC-40
30
NC-35
NC-30
20
NC-25
Approximate Hearing
NC-20
Threshold 10
NC-15
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
22 | PRODUCT DATA
65
NC-65 60
NC-60 55
NC-55 50
NC-50 45
NC-45 40
NC-40 35
NC-35 30
NC-30 25
20
Approxim ate Hearing 15 Threshold
NC-25 NC-20
10
NC-15
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
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Figure 14: Four-Way Ceiling Cassette Indoor Unit Sound Power Level Diagrams.
LCN248HV
LCN368HV
ACOUSTIC DATA
Indoor Units
LCN428HV
Sound Power Level
Product Data
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PRODUCT DATA | 23
ACOUSTIC DATA
Outdoor Units
Four-Way Ceiling-Cassette System Engineering Manual
Octave Band Sound Pressure Level (0dB = 20Pa) Octave Band Sound Pressure Level (dB = 20Pa ) 2FWDYH%DQG6RXQG3UHVVXUH/HYHOG% 3D
Figure 15: Four-Way Ceiling Cassette Outdoor Unit Sound Pressure Level Measurement Location.
4.9 ft.
D 3.3 ft.
Figure 16: Four-Way Ceiling Cassette Outdoor Unit Sound Pressure Level Diagrams.
LUU097HV
· Measurements taken with no attenuation and units operating at full load normal operating condition.
· Sound level will vary depending on a range of factors such as construction (acoustic absorption coefficient) of particular area in which the equipment is installed.
· Sound pressure levels are measured in dB(A)±1.
· Tested in anechoic chamber per ISO Standard 3745.
Table 7: Four-Way Ceiling Cassette Outdoor Unit Sound Levels (dB[A]).
Model
LUU097HV LUU127HV LUU189HV LUU249HV LUU369HV LUU429HV
Sound Pressure Levels (dB[A])
Cooling
Heating
47
51
49
52
48
52
48
52
52
54
52
54
Sound Power Levels (dB[A])
67 67 65 66
LUU127HV
LUU189HV
80
Y Cooling Heating
70
NC-65 60
NC-60
NC-55 50
NC-50
NC-45 40
NC-40
NC-35 30
NC-30
20
NC-25
Approximate
NC-20
Hearing
Threshold 10
NC-15
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
LUU249HV
80
Cooling Heating
70
LUU369HV, LUU429HV
80
Cooling
75
Y Heating
70
65
NC-65
60
60
NC-60
55
NC-65 NC-60
50
NC-55
50
NC-50
45
NC-55 NC-50
NC-45 40
NC-40
NC-35 30
NC-30
20
NC-25
Approximate Hearing
NC-20
Threshold
NC-15
10
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
NC-45 40
NC-40 35
NC-35 30
NC-30 25
20
Approxim ate Hearing 15
NC-25 NC-20
10
NC-15
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
24 | PRODUCT DATA
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ACOUSTIC DATA
Outdoor Units
Sound Power Level (0dB = 10E-6W/m2) Sound Power Level (0dB = 10E-6W/m2) Sound Power Level (0dB = 10E-6W/m2)
Figure 17: Four-Way Ceiling Cassette Outdoor Unit Sound Power Level Diagrams.
LUU189HV, LUU249HV
120.0 Cooling
110.0
120.0 110.0
LUU369HV
¥ Cooling
100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0
125 250 500 1000 2000 4000 Octave Band Center Frequency (Hz)
NR-115 NR-110 NR-105 NR-100 NR-95 NR-90 NR-85 NR-80 NR-75 NR-70 NR-65 NR-60 NR-55 NR-50 NR-45 NR-40 NR-35 NR-30 NR-25 NR-20 8000
100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0
125 250 500 1000 2000 4000 Octave Band Center Frequency (Hz)
NR-115 NR-110 NR-105 NR-100 NR-95 NR-90 NR-85 NR-80 NR-75 NR-70 NR-65 NR-60 NR-55 NR-50 NR-45 NR-40 NR-35 NR-30 NR-25 NR-20 8000
120.0 110.0 100.0
90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0
LUU429HV
¥ Cooling
125 250 500 1000 2000 4000 Octave Band Center Frequency (Hz)
NR-115 NR-110 NR-105 NR-100 NR-95 NR-90 NR-85 NR-80 NR-75 NR-70 NR-65 NR-60 NR-55 NR-50 NR-45 NR-40 NR-35 NR-30 NR-25 NR-20 8000
Product Data
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PRODUCT DATA | 25
REFRIGERANT FLOW DIAGRAMS
LCN098HV4, LCN128HV4 Indoor Units
Figure 18: LCN098HV4, LCN128HV4 Refrigerant Flow Diagram.
Heat exchanger Heating
Gas pipe connection port (flare connection)
Cooling
Turbo fan M
Evaporator Inlet Temperature Thermistor
Evaporator Outlet Temperature Thermistor
Indoor Air Temperature Thermistor
Liquid pipe connection port (flare connection)
Four-Way Ceiling-Cassette System Engineering Manual
Table 8: LCN098HV4, LCN128HV4 Four-Way Ceiling Cassette Indoor Unit Thermistor Details.
Description (Based on Cooling Mode) Indoor Air Temperature Thermistor
Evaporator Inlet Temperature Thermistor Evaporator Outlet Temperature Thermistor
PCB Connector CN-ROOM CN-PIPE / IN
CN-PIPE / OUT
Table 9: LCN098HV, LCN128HV4 Four-Way Ceiling Cassette Indoor Unit Refrigerant Pipe Connections.
Model No.
Vapor (inch)
Liquid (inch)
LCN098HV4, LCN128HV4
3/8
1/4
Table 10: LCN098HV, LCN128HV4 Four-Way Ceiling Cassette Indoor Unit Refrigerant Pipe Sizes.
Model No.
Vapor (inch)
Liquid (inch)
LCN098HV4, LCN128HV4
3/8
1/4
26 | PRODUCT DATA
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Product Data
REFRIGERANT FLOW DIAGRAMS
LUU097HV, LUU127HV Outdoor Units
Figure 19: LUU097HV, LUU127HV Refrigerant Flow Diagram.
Refrigerant Flow Cooling Heating
1/4 Flare Connection
Strainer
Electronic
Expansion Valve
Strainer
Condenser Out Temperature Thermistor
Condensing Temperature Thermistor
Inlet Air Temperature Thermistor
M
3/8 Flare Connection
High Pressure Sensor
Suction Temperature
Thermistor
4 way Valve Discharge Temperature Thermistor
Inverter Compressor
Table 11: LUU097HV, LUU127HV Four-Way Ceiling Cassette Outdoor Unit Thermistor Details.
Description Condenser Inlet Temperature Thermistor Condenser Outlet Temperature Thermistor
Discharge Temperature Thermistor Suction Temperature Thermistor Condensing Temperature Thermistor
High Pressure Sensor Electronic Expansion Valve
PCB Connector CN-AIR
CN-C_PIPE CN-DISCHARGE
CN-SUCTION CN-MID
CN-H_PRESSURE CN-EEV_A
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PRODUCT DATA | 27
REFRIGERANT FLOW DIAGRAMS
LCN188HV4, LCN248HV, LCN368HV, LCN428HV Indoor Units
Figure 20: LCN188HV4, LCN248HV, LCN368HV, LCN428HV Refrigerant Flow Diagram.
Heating
Heat exchanger
Gas pipe connection port (flare connection)
Cooling
Turbo fan M
Evaporator Outlet Temperature Thermistor
Indoor Air Temperature Thermistor
Evaporator Inlet Temperature Thermistor
Liquid pipe connection port (flare connection)
Four-Way Ceiling-Cassette System Engineering Manual
Table 12: LCN188HV4, LCN248HV, LCN368HV, LCN428HV Four-Way Ceiling Cassette Indoor Unit Thermistor Details.
Description (Based on Cooling Mode)
PCB Connector
Indoor Air Temperature Thermistor
CN-ROOM
Evaporator Inlet Temperature Thermistor
CN-PIPE / IN
Evaporator Outlet Temperature Thermistor
CN-PIPE / OUT
Table 13: LCN188HV4, LCN248HV, LCN368HV, LCN428HV Four-Way Ceiling Cassette Indoor Unit Refrigerant Pipe Connections.
Model No.
Vapor (inch)
Liquid (inch)
LCN188HV4
1/2
1/4
LCN248HV, LCN368HV, LCN428HV
5/8
3/8
Table 14: LCN188HV4, LCN248HV, LCN368HV, LCN428HV Four-Way Ceiling Cassette Indoor Unit Refrigerant Pipe Sizes.
Model No.
Vapor (inch)
Liquid (inch)
LCN188HV4
5/8
3/8
LCN248HV, LCN368HV, LCN428HV
5/8
3/8
Table 15: LCN188HV4 Connection Socket Dimensions.
Model No.
Vapor (inch)
LCN188HV4
Ø1/2 Ø5/8
Liquid (inch) Ø1/4 Ø3/8
Figure 21: LCN188HV4 Refrigerant Pipe Connections.
1/2 in. to 5/8 in. Connection
Piping Flare nut
Flare side to indoor unit Ø5/8 in.
Ø1/2 in.
Flare side pipe from ODU
Connection socket
1/4 in. to 3/8 in. Connection
Piping Flare nut
Flare side to indoor unit Ø3/8 in.
Ø1/4 in. Flare side to ODU
Connection socket
28 | PRODUCT DATA
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REFRIGERANT FLOW DIAGRAMS
LUU189HV, LUU249HV, LUU369HV, LUU429HV Outdoor Units
Figure 22: LUU189HV, LUU249HV, LUU369HV, LUU429HV Refrigerant Flow Diagram.
Condenser Outlet Pipe Temperature Thermistor
Ø3/8 Inch
Condenser Middle Pipe Temperature Thermistor
36,000 Btu/h and 42,000 Btu/h Outdoor Units have two (2) fans.
Ø5/8 Inch
Product Data
Table 16: LUU189HV, LUU249HV, LUU369HV, LUU429HV Four-Way Ceiling Concealed Outdoor Unit Thermistor Details.
Description
PCB Connector
Discharge Pipe Temperature Thermistor
CN_DISCHA_BK
Suction Pipe Temperature Thermistor
CN_SUCTION_GR
Condenser Outlet Pipe Temperature Thermistor
CN_C_PIPE_VI
Air Temperature Thermistor
CN_AIR_YL
Condenser Middle Pipe Temperature Thermistor
CN_MID_BR
Pressure Sensor
CN_H_PRESS_RD
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PRODUCT DATA | 29
WIRING DIAGRAMS
LCN098HV4, LCN128HV4, LCN188HV4 Indoor Units
Figure 23: LCN098HV4, LCN128HV4, LCN188HV4 Four-Way Ceiling Cassette Indoor Unit Wiring Diagram.
Four-Way Ceiling-Cassette System Engineering Manual
30 | PRODUCT DATA
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WIRING DIAGRAMS
LUU097HV, LUU127HV Outdoor Units
Figure 24: LUU097HV, LUU127HV Four-Way Ceiling Cassette Outdoor Unit Wiring Diagram.
Product Data
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PRODUCT DATA | 31
WIRING DIAGRAMS
LUU189HV Outdoor Units
Figure 25: LUU189HV Four-Way Ceiling Cassette Outdoor Unit Wiring Diagram.
Four-Way Ceiling-Cassette System Engineering Manual
32 | PRODUCT DATA
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7-19
WIRING DIAGRAMS
LCN248HV, LCN368HV, LCN428HV Indoor Units
Figure 26: LCN248HV, LCN368HV, and LCN428HV Four-Way Ceiling Cassette Indoor Unit Wiring Diagram.
7-19
Product Data
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PRODUCT DATA | 33
WIRING DIAGRAMS
LUU249HV Outdoor Units
Figure 27: LUU249HV Four-Way Ceiling Cassette Outdoor Unit Wiring Diagram.
Four-Way Ceiling-Cassette System Engineering Manual
34 | PRODUCT DATA
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7-19
WIRING DIAGRAMS
LUU369HV and LUU429HV Outdoor Units
Figure 28: LUU369HV and LUU429HV Four-Way Ceiling Cassette Outdoor Unit Wiring Diagram.
Product Data
7-19
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PRODUCT DATA | 35
ELECTRICAL CONNECTIONS
Four-Way Ceiling-Cassette System Engineering Manual
General Power Wiring / Communications Cable Guidelines
· Follow manufacturer's circuit diagrams displayed on the inside of the control box cover. · Confirm power source specifications. · Properly ground the ODU and the IDU per National Electrical Code (NEC) and local codes.
Figure 29: General Four-Way Ceiling Cassette System Power / Communications System Schematic (Appearances May Vary).
· Connect the wiring firmly so that the wires cannot be easily pulled out. · Confirm that the electrical capacity is sufficient.
LN Power Supply
Main Switch
Outdoor Unit
· Power supply to the outdoor unit must be selected based on NEC and local codes. Maximum allowable voltage fluctuation ±10% or nameplate rated value.
· It is recommended that a circuit breaker is installed, especially if conditions could become wet or moist.
· Include a disconnect in the power wiring system. Add an air gap contact separation of at least
G
LN Circuit Breaker
Fuse Power Wiring (Including Ground)
Terminal Block Outdoor 1(L1) 2(L2)
Terminal Block Outdoor 1(L1) 2(L2) 3
1/8 inch in each active (phase) conductor. · Any openings where the field wiring enters the cabinet must be completely sealed.
Power Wiring
Communication Cable
Power Supply / Power Wiring
1(L1) 2(L2) 3 Terminal Block Indoor
· LG Single Zone Four-Way Cassette systems operate at 1Ø, 208-230V, 60Hz.
Indoor Unit
· Power wiring / power wiring gauge to the outdoor unit(s) must be solid or stranded, and must comply with all National Electrical Code (NEC), UL, and local electrical codes.
· The indoor unit is powered by the outdoor unit. See below and the next page for communication / connection (power) cable specifications
from the outdoor unit to the indoor unit.
· Ground wire must be longer than the common power / communication wires.
· Connect the wiring firmly so the wires cannot be easily pulled out.
· Always match color codes of each wire and follow wiring diagram.
· Do not install power wiring to the outdoor unit and the communication / connection (power) cable to the indoor unit in the same conduit.
Use separate conduits.
WARNING
· Terminal screws will become loose during transport. Properly tighten the terminal connections during installation or risk electric shock, physical injury, or death. · Loose wiring will cause unit to malfunction, overheat, and catch fire, resulting in severe injury or death.
· Terminal screws will loosen during transport. Properly tighten the terminal connections during installation or risk equipment malfunction or property damage. · Loose wiring will cause unit malfunction, the wires to burnout or the terminal to overheat and catch fire. There is a risk of equipment malfunction or property damage. A voltage drop will cause the following problems: · Magnetic switch vibration, fuse breaks, or disturbance to the normal function of an overload protection device. · Compressor will not receive the proper starting current.
Communication / Connection (Power) Cable Specifications from Outdoor Unit to Indoor Unit
· For communication / connection (power) wires between the Single Zone outdoor unit and the indoor unit for lengths up to 130 feet, use a minimum 14 gauge, four (4) conductor, stranded, shielded or unshielded wire. If shielded, the wire must be grounded to the chassis at the outdoor unit only. · When the communication / connection (power) wires between the indoor unit and outdoor unit is GREATER THAN 130 feet, use: · A two (2) conductor wire for power. · A two (2) conductor wire for communication / ground. · Separate the power AT LEAST two (2) inches away from the communication / ground wire. · All wiring is still minimum 14 gauge, stranded, shielded, or unshielded as cited above.
· Insulation material as required by local code. · Firmly attach the cable; provide slack but secure in a way to prevent external forces from being imparted on the terminal block. · Wiring must be completed without splices.
WARNING
All power wiring and communication cable installation must be performed by trained service providers working in accordance with local, state, and National Electrical Code (NEC) / UL / ETL federal regulations related to electrical equipment and wiring, and following the manufacturer product diagrams, requirements, and instructions in this manual. Failure to do so will lead to electric shock which can cause physical injury or death.
36 | PRODUCT DATA
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ELECTRICAL CONNECTIONS
Figure 30: Typical Single Zone Outdoor Unit to Indoor Unit Wiring and
Communications Cable Diagram For Wiring Lengths Up to 130 Feet.
7/16" ± 1/8"
Communication / Connection
(Power), Ground Cable
From Outdoor Unit
To Indoor Unit
GN/YL
GN/YL = (Ground, Yellow)
13/16"
Figure 31: Single Zone Outdoor Unit to Indoor Unit Wiring and Com-
munications Cable Diagram For Wiring Lengths GREATER THAN 130
Feet.
7/16" ± 1/8"
Two-Conductor
1(L1)
Power Cable
2(L2)
Separate At Least Two (2) Inches
Two-Conductor
13/16" 7/16" ± 1/8"
3
Communication / Ground Cable
GN/YL = (Ground, Yellow)
GN/YL 13/16"
· Always verify the communication cable is connected to a communications terminal on the Single Zone unit. power to the communication cable connection. If contact is made, the PCBs will be damaged.
Never apply line voltage
· The shield of the communications cable connecting the outdoor unit to the indoor unit must be grounded only to the outdoor unit frame.
· Tie the shield of each cable segment together using a wire nut at the indoor unit. Maintain polarity throughout the communication network.
· Position the incoming power to the outdoor unit away from the power / communications cables from the outdoor unit to the indoor unit.
· Never use a common multiple-core communications cable.
Figure 32: Single Zone Cassette Power / Communication System Diagram For Wiring Lengths Up to 130 Feet (Appearances May Vary Slightly).
Figure 33: Single Zone Cassette Power / Communication System Diagram For Wiring Lengths GREATER THAN 130 Feet (Appearances May Vary Slightly).
Product Data
208/230 VAC
Figure 34: Schematic of a Single Zone Cassette System When the Wiring is GREATER THAN 130 Feet.
Power Flow: L N Communication Flow: Comm N
1(L1) (Power, L) 2(L2) (Neutral, N)
G (Ground)
Power Supply
At Least Two (2) Inches
Diagram is an example of communication and power cables when the wiring is GREATER THAN 130 feet. Terminals may be labeled differently depending on the model. Outdoor and Indoor Unit appearances may vary depending on the model.
3 (Communications)
GREATER THAN 130 feet: Must Separate Communications and Ground (G) Cable from the Power (1[L1]) and Neutral (2[L2]) Cable at Least Two (2) Inches.
· Use a conduit for the communications cable / power wiring from the outdoor unit to the indoor units.
· Make sure the communications cable / power wiring from the outdoor units to the indoor units, and the power wiring to the outdoor unit are separate, otherwise, the outdoor unit operation will be affected by electrical noise and will malfunction or fail.
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PRODUCT DATA | 37
ELECTRICAL CONNECTIONS
Four-Way Ceiling-Cassette System Engineering Manual
BR BL RD GRN / YLW
Controller Options
Single Zone Four-Way Ceiling Cassette systems include a wireless handheld remote controller (Model No. PQWRHQ0FDB; Part No. AKB73757604). Optional LG-suppled wired controllers are available. See "Functions, Controls, Options", or contact an LG representative for more information.
Figure 35: PQWRHQ0FDB (AKB73757604) Wireless Handheld Remote Controller.
Wireless Handheld Remote Controller features:
· Display Panel: Displays operation conditions. · On / Off Buttons: Turns system operation on and off. · Mode Button: Selects the operation mode: Cooling, Heating, Auto, Dry (Dehumidification), or Fan.
· Temp Up / Down Buttons: Adjusts the desired room temperature in the different modes. · Fan Speed Button: Sets desired fan speed. · Reset: Initializes the handheld remote control settings.
Wired Controller Connections
Optional controllers (see "Functions, Controls, Options", or contact an LG representative for more information) can connect to the Four-Way Ceiling Cassette indoor unit in one of two different ways.
1. LG Wired Remote Extension Cable with Molex plug (PZCWRC1; sold separately) that connects to the CNREMO terminal on the indoor unit PCB.
2. Field-supplied controller cable that connects to the indoor unit terminal block (must be at least UL2547 or UL1007, and at least FT-6 rated if local electric and building codes require plenum cable usage). Communication cable from indoor unit to remote controller(s) is to be 22 AWG, 3-conductor, twisted, stranded, unshielded. Wiring must comply with all applicable local and national codes.
:KHQXVLQJ¿HOGVXSSOLHGFRQWUROOHUFDEOHPDNHVXUHWRFRQQHFWWKH\HOORZWR\HOORZFRPPXQLFDWLRQVZLUH UHGWRUHG9SRZHUZLUH DQGEODFN to black (ground wire) terminals from the remote controller to the indoor unit terminal blocks.
Figure 36: PZCWRC1 LG Wired Remote Extension Cable.
Figure 37: Wired Controller Connection (Example Only).
Indoor Unit Terminal Block
TEMP
FAN SPEED
OPER MODE
Verify the connectors are properly inserted. C/BOX Cable (Plug type)
Extension cable
To Indoor Unit CN-REMO Terminal
GND
1(L1 ) 2(L2) 3
CN-REMO
Wired Controller Placement
Wired controllers include a sensor to detect room temperature. To maintain comfort levels in the conditioned space, the wired controller must be installed in a location away from direct sunlight, high humidity, and where it could be directly exposed to cold air. Controller must be installed four (4) to five (5) feet above the floor where its LED display can be read easily, in an area with good air circulation, and where it can detect an average room temperature.
Figure 38: Proper Location for the Wired Controller.
Remote Controlle r
TEMP
NO
YES
Remote Controlle r
TEMP
Do not install the wired controller near or in:
· Drafts or dead spots behind doors and in corners. · Hot or cold air from ducts. · Radiant heat from the sun or appliances. · Concealed pipes and chimneys. · An area where temperatures are uncontrolled, such as an outside wall.
TEMP Rem ot e Cont roller
NO
NO
4 to 5 feet above the floor
Assigning the Thermistor for Temperature Detection
Each indoor unit includes a return air thermistor assigned to sense the temperature. If a wired controller is installed, there is a choice of sensing temperature with either the indoor unit return air thermistor or the thermistor in the wired controller. It is also an option to set both thermistors to sense temperature so that indoor unit bases its operation on the first thermistor to reach the designated temperature differential.
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AIR VELOCITY AND TEMPERATURE DISTRIBUTION
Product Data
Figure 39: LCN098HV4 Air Velocity and Temperature Distribution Charts.
Cooling
Discharge angle: 40°
Discharge angle: 50°
Air velocity [ft/s]
Air velocity [ft/s]
Heatin g
9ft
6.6
6.6
7ft
4.9
4.9
3.3
1.6
8ft
5ft
3.3
1.6
0ft
5ft
3ft 0ft 8ft
9ft
6.6
6.6
4.9
4.9
7ft
3.3
3.3
1.6
1.6
3ft
0ft
8ft
5ft
0ft
5ft
8ft
Temperature [°F]
9ft
64
64
68
68
7ft
72
72
3ft
Temperature [°F]
81 75 70
91 86
9ft 91
86
7ft
81 75 70
3ft
75
75
0ft
8ft
5ft
0ft
5ft
8ft
0ft
8ft
5ft
0ft
5ft
8ft
Figure 40: LCN128HV4 Air Velocity and Temperature Distribution Charts.
Cooling
Discharge angle: 40°
Discharge angle: 50°
Air velocity [ft/s]
Air velocity [ft/s]
Heating
9ft
6.6
6.6
7ft
4.6
4.6
3.3
3.3
3ft
1.6
1.6
0ft
8ft
5ft
0ft
5ft
8ft
6.6
6.6
4.6
4.6
3.3
3.3
1.6
1.6
8ft
5ft
0ft
5ft
Temperature [°F]
Temperature [°F]
9ft 64 64
68
68
7ft
72
72
3ft
75
75
0ft
8ft
5ft
0ft
5ft
8ft
91
91
75 81
75 81
8ft
5ft
0ft
5ft
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9ft 7ft
3ft 0ft 8ft
9ft 7ft
3ft 0ft 8ft
PRODUCT DATA | 39
AIR VELOCITY AND TEMPERATURE DISTRIBUTION
Figure 41: LCN188HV4 Air Velocity and Temperature Distribution Charts.
Four-Way Ceiling-Cassette System Engineering Manual
Figure 42: LCN248HV Air Velocity and Temperature Distribution Charts.
Cooling
Discharge angle: 40° Air velocity [ft/s]
Discharge angle: 50° Air velocity [ft/s]
Heatin g
9ft
6.6
6.6
7ft
4.6
4.6
3ft
3.3
3.3
0ft
13ft 10ft 7ft
3ft
0ft
3ft
7ft 10ft 13ft
9ft
7ft
6.6
6.6
3.3
3.3
3ft
1.6
1.6
0ft
13ft 10ft 7ft
3ft
0ft
3ft
7ft 10ft 13ft
Temperature [°F]
9ft
64
64
68
68
72
72
7ft
3ft
73 75
73 75
13ft 10ft 7ft
3ft
0ft
3ft
7ft 10ft 13ft
Temperature [°F]
9ft
91
91
86
86
7ft
72 75
75
81
81
72 3ft
0ft
13ft 10ft 7ft
3ft
0ft
3ft
7ft 10ft 13ft
40 | PRODUCT DATA
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AIR VELOCITY AND TEMPERATURE DISTRIBUTION
Product Data
Figure 43: LCN368HV Air Velocity and Temperature Distribution Charts.
Cooling
Discharge angle: 40°
Discharge angle: 50°
Air velocity [ft/s]
Air velocity [ft/s]
Heating
13.1 9.8
13.1 9.8
10.5ft 7ft
3ft
6.6
6.6
3.3
3.3
16ft 13ft 10ft 7ft 3ft 0ft 3ft
0ft 7ft 10ft 13ft 16ft
Temperature [°F]
64
64
10.5ft
7ft
68
68
72 75
16ft 13ft 10ft 7ft 3ft 0ft 3ft
3ft
72 75
7ft 10ft 13ft 16ft
13.1
13.1
9.8
9.8
10.5ft 7ft
16ft 13ft 10ft
6.6 3.3
7ft 3ft 0ft
3ft 6.6 3.3 3ft 7ft 10ft 13ft 16ft
Temperature [°F]
91 91
10.5ft
75 72
86 86
16ft 13ft 10ft 7ft
81
81
3ft 0ft 3ft
7ft 75
72
3ft
7ft 10ft 13ft 16ft
Figure 44: LCN428HV Air Velocity and Temperature Distribution Charts.
Cooling
Discharge angle: 40°
Discharge angle: 50°
Air velocity [ft/s]
Air velocity [ft/s]
Heating
13.1 9.8
13.1 9.8
10.5ft 7ft
3ft
6.6
6.6
3.3
3.3
16ft 13ft 10ft 7ft 3ft 0ft 3ft
0ft 7ft 10ft 13ft 16ft
Temperature [°F]
64
64
10.5ft
68
68
7ft
72 75
16ft 13ft 10ft 7ft 3ft 0ft 3ft
3ft
72 75
7ft 10ft 13ft 16ft
13.1
13.1
9.8
9.8
10.5ft 7ft
3ft
6.6
6.6
3.3
3.3
16ft 13ft 10ft 7ft 3ft 0ft 3ft 7ft 10ft 13ft 16ft
Temperature [°F]
91 91
10.5ft
75 72
86 86
81
81
16ft 13ft 10ft 7ft 3ft 0ft 3ft
75
7ft
72
3ft
7ft 10ft 13ft 16ft
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PRODUCT DATA | 41
ACCESSORIES
Four-Way Ceiling-Cassette System Engineering Manual
LG Monitoring View (LGMV) Diagnostic Software and Cable
LGMV software allows the service technician or commissioning agent to connect a computer USB port to the outdoor unit main printed circuit board (PCB) using an accessory cable without the need for a separate interface device. The main screen for LGMV allows user to view the following real time data on one screen:
· Actual inverter compressor speed · Target inverter compressor speed · Actual outdoor fan speed · Target outdoor unit fan speed · Actual superheat · Target superheat · Actual subcooler circuit superheat · Target subcooler circuit superheat · Main EEV position · Subcooling EEV position · Inverter compressor current transducer
value · Outdoor air temperature · Actual high pressure/saturation temperature · Actual low pressure/saturation temperature · Suction temperature · Inverter compressor discharge temperature · Constant speed compressor discharge
temperature · Front outdoor coil pipe temperature · Back outdoor coil pipe temperature · Liquid line pipe temperature · Subcooler inlet temperature · Subcooler outlet temperature · Average indoor unit (IDU) pipe temperature · Inverter compressor operation indicator
light · Four-way reversing valve operation
indicator light · Pressure graph showing actual low pres-
sure and actual high pressure levels · Error code display · Operating mode indicator · Target high pressure · Target low pressure · PCB (printed circuit board) version
· Software version
· Installer name
· Model no. of outdoor units
· Site name · Total number of connected indoor units · Communication indicator lights · Indoor unit capacity · Indoor unit operating mode · Indoor unit fan speed · Indoor unit EEV position · Indoor unit room temperature · Indoor unit inlet pipe temperature · Indoor unit outlet pipe temperature
· Indoor unit error code
Additional screens can be accessed by tabs on the main screen:
Figure 45: Sample Cycleview.
1. Cycleview: Graphic of internal components including:
· Compressors showing actual speeds
· Temperature and pressure sensors
· EEVs
· Four-way reversing valve
· Indoor Units
· Outdoor fans showing status and speeds
· Liquid injection valves
2. Graph: Full screen graph of actual high and low pressures and high and low pressure limits. A sliding bar enables user to go back in time and view data.
3. Control IDU: Enables user to turn on all IDU's default setpoints of 86°F in heat mode or 64°F in cool mode.
4. Setting: Converts metric values to imperial values.
5. Making Data: Recording of real time data to a separate file created to be stored on the user's computer.
6. Loading Data: Recorded data from a saved ".CSV" file can be loaded to create an LGMV session.
7. Electrical Data: The lower half of main screen is changed to show the following:
· Inverter compressor - Amps
· Constant compressor - Current transducer value
- Volts
- Phase
- Power Hz
- Inverter control board fan Hz
In lieu of connecting to the outdoor unit, user has the option to connect to the indoor unit with the use of a USB to RS-485 connector kit. When connected through the indoor unit, user will not be able to record data.
This software can be used to both commission new systems and troubleshoot existing systems. LGMV data can be recorded to a ".CSV" file and emailed to an LG representative to assist with diagnostic evaluations.
Recommended Minimum PC Configuration:
· CPU: Pentium® IV 1.6 GHz · Operating System: Windows® NT/2000/XP/Vista · Main Memory: 256 MB
· Hard Disk: 600 MB when operating · Web Browser: Internet Explorer® 5.0
/*09LVDYDLODEOHLQGLHUHQWIRUPDWVLQFOXGLQJ0RELOH/*09ZKLFKLVDDSSIRUXVHRQZLUHOHVVGHYLFHV&RQWDFW\RXU/* Sales Representative for more information.
42 | PRODUCT DATA
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ACCESSORIES
LG Smart Inverter Monitoring System (SIMS)
SIMS can be used to display and graph operational data for single zone systems and respective components (indoor unit and outdoor unit). SIMS also displays error codes and a troubleshooting guide. SIMs consists of a hardware Wireless Local Area Network (WLAN) module, an interface cable, and a free downloadable application (app) for iOS® or AndroidTM. The user must supply either an Apple® or an Android smart phone; SIMs is not optimized for tablets, and only be used with LG single zone and Multi F systems.
Figure 46: LG SIMS WLAN Module.
Only trained HVAC service technicians familiar with variable refrigerant flow (VRF) systems in general and with LG's single zone and multi zone products can use SIMS. The technician must understand inverter air conditioning operation cycles, the meaning of the data displayed by SIMS, and how to use the data to troubleshoot the system.
iOS is a registered trademark of Cisco in the U.S. and other countries. Android is a trademark of Google Inc. Apple is a trademark of Apple Inc., registered in the U.S. and other countries.
Contact your LG Sales Representative for system requirements, the latest version of SIMS, how to download the app, or other information.
Four-Way Ceiling-Cassette Accessories Overview
Table 17: Four-Way Ceiling-Cassette Accessories Overview.
Model No.
ZLABGP01A ZLABGP04A PT-QCHW0 / PT-UQC
PT-UMC1 PTVK410+PTVK420
PTVK430 PTEGM0 PQSH1200 PWFMDD200
Description
Low Ambient Wind Baffle for 9 and 12k Capacities Low Ambient Wind Baffle for 18k and 24k (One [1] Required), 36k and 42k (Two [2] Required) Capacities
Ceiling Grilles for 2' x 2' indoor units Ceiling Grilles for 3' x 3' indoor units Ventilation Kit + Flange for All Capacities of 3' x 3' IDU (Must comply with applicable codes for fire isolation dampers.) Flange for All Capacities (Must comply with applicable codes for fire isolation dampers.) Auto Elevation Kit for 3' x 3' indoor units 120W Drain Pan Heater for 18k ~ 42k Outdoor Units
Wi-Fi Module
Product Data
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PRODUCT DATA | 43
PERFORMANCE DATA
Cooling Capacity Data on page 45 Heating Capacity Data on page 51 Maximum Heating Capacity Data on page 54 Equipment Selection Procedure on page 56
PERFORMANCE DATA
Cooling Capacity LC098HV4
Cooling Capacity Table for LC098HV4 (LUU097HV + LCN098HV4)
Table 18: LCN098HV4 / LUU097HV Cooling Capacities.
Outdoor Air Temp. (°F DB)
68 / 57 TC SHC PI
73 / 61 TC SHC PI
Indoor Air Temp. °F DB / °F WB
77 / 64
80 / 67
TC SHC PI TC SHC PI
86 / 72 TC SHC PI
90 / 75 TC SHC PI
-4
8.85 6.84 0.39 9.40 7.23 0.40 9.95 7.00 0.42 10.34 7.15 0.42 11.05 7.21 0.43 11.60 7.34 0.44
0
8.84 6.88 0.39 9.39 7.27 0.41 9.94 7.04 0.42 10.34 7.19 0.43 11.04 7.25 0.44 11.59 7.39 0.45
5
8.84 6.94 0.40 9.38 7.33 0.42 9.93 7.10 0.43 10.33 7.25 0.44 11.03 7.31 0.44 11.58 7.45 0.45
10
8.83 7.00 0.41 9.38 7.39 0.42 9.93 7.16 0.44 10.32 7.31 0.44 11.02 7.37 0.45 11.57 7.51 0.46
15
8.82 7.05 0.41 9.37 7.45 0.43 9.92 7.21 0.44 10.31 7.37 0.45 11.01 7.43 0.46 11.56 7.57 0.47
20
8.82 7.11 0.42 9.36 7.51 0.43 9.91 7.27 0.45 10.31 7.42 0.46 11.01 7.49 0.46 11.55 7.63 0.47
25
8.81 7.16 0.42 9.36 7.57 0.44 9.90 7.33 0.46 10.30 7.48 0.46 11.00 7.54 0.47 11.54 7.69 0.48
30
8.80 7.22 0.43 9.35 7.63 0.45 9.90 7.38 0.46 10.29 7.54 0.47 10.99 7.60 0.48 11.54 7.75 0.49
35
8.80 7.27 0.44 9.34 7.68 0.45 9.89 7.44 0.47 10.28 7.60 0.47 10.98 7.66 0.48 11.53 7.81 0.49
40
8.79 7.33 0.44 9.33 7.74 0.46 9.88 7.50 0.48 10.27 7.65 0.48 10.97 7.72 0.49 11.52 7.86 0.50
45
8.78 7.38 0.45 9.33 7.80 0.47 9.87 7.55 0.48 10.27 7.71 0.49 10.96 7.78 0.50 11.51 7.92 0.51
50
8.78 7.44 0.45 9.32 7.86 0.47 9.87 7.61 0.49 10.26 7.77 0.49 10.96 7.83 0.50 11.50 7.98 0.51
55
8.77 7.49 0.46 9.31 7.91 0.48 9.86 7.66 0.49 10.25 7.82 0.50 10.95 7.89 0.51 11.49 8.04 0.52
60
8.76 7.55 0.47 9.31 7.97 0.48 9.85 7.72 0.50 10.24 7.88 0.51 10.94 7.95 0.52 11.48 8.10 0.53
65
8.76 7.60 0.47 9.30 8.03 0.49 9.84 7.77 0.51 10.24 7.94 0.51 10.93 8.00 0.52 11.47 8.16 0.53
70
8.75 7.65 0.48 9.29 8.09 0.50 9.84 7.83 0.51 10.23 7.99 0.52 10.92 8.06 0.53 11.47 8.21 0.54
75
8.54 7.53 0.50 9.08 7.96 0.52 9.62 7.72 0.54 10.01 7.89 0.55 10.71 7.96 0.56 11.25 8.12 0.57
80
8.33 7.40 0.53 8.87 7.84 0.55 9.41 7.61 0.57 9.80 7.78 0.58 10.49 7.86 0.59 11.03 8.03 0.60
85
8.12 7.27 0.56 8.66 7.71 0.58 9.20 7.49 0.60 9.59 7.66 0.60 10.28 7.76 0.62 10.82 7.92 0.63
90
7.91 7.13 0.58 8.45 7.57 0.60 8.99 7.37 0.62 9.37 7.55 0.63 10.06 7.65 0.64 10.60 7.82 0.66
95
7.68 7.05 0.61 8.22 7.50 0.63 8.75 7.31 0.65 9.00 7.38 0.66 9.83 7.61 0.67 10.36 7.79 0.69
100
7.50 6.86 0.63 8.03 7.31 0.66 8.57 7.14 0.68 8.88 7.27 0.69 9.64 7.44 0.70 10.17 7.63 0.72
105
7.31 6.68 0.66 7.84 7.13 0.68 8.38 6.96 0.71 8.77 7.15 0.72 9.45 7.28 0.73 9.99 7.47 0.74
110
7.12 6.45 0.68 7.66 6.89 0.71 8.19 6.75 0.74 8.58 6.94 0.74 9.26 7.07 0.76 9.80 7.26 0.77
115
6.94 6.25 0.71 7.47 6.70 0.74 8.01 6.57 0.76 8.39 6.76 0.77 9.08 6.90 0.79 9.61 7.10 0.80
118
6.82 6.21 0.73 7.36 6.66 0.75 7.89 6.54 0.78 8.28 6.73 0.79 8.96 6.88 0.80 9.50 7.08 0.82
122
6.79 6.19 0.75 7.32 6.65 0.77 7.86 6.52 0.80 8.24 6.72 0.81 8.93 6.87 0.83 9.46 7.07 0.84
DB: Dry Bulb Temperature (°F) WB: Wet Bulb Temperature (°F) TC: Total Capacity (kBtu/h)
SHC: Sensible Capacity (kBtu/h) PI: Power Input (kW) (includes compressor, indoor fan motor and outdoor fan motor)
1. All capacities are net, evaporator fan motor heat is deducted.
2. Cooling range can be extended from 0°F down to -4°F using the Low Ambient Wind Baffle Kit (sold separately).
3. Grey shading indicates reference data. When operating at this temperature, these values can be different if the system is not running consistently.
4. Direct interpolation is permissible. Do not extrapolate.
Capacity as rated: 0 ft. above sea level with 24.6 ft. of refrigerant piping. 0 ft. level difference between outdoor and indoor units.
Cooling capacity rating obtained with air entering the indoor unit at 80ºF dry bulb (DB) and 67ºF wet bulb (WB), and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
Performance Data
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PERFORMANCE DATA | 45
Four-Way Ceiling-Cassette System Engineering Manual
PERFORMANCE DATA
Cooling Capacity LC128HV4
Cooling Capacity Table for LC128HV4 (LUU127HV + LCN128HV4)
Table 19: LCN128HV4 / LUU127HV Cooling Capacities.
Outdoor Air Temp. (°F DB)
68 / 57 TC SHC PI
73 / 61 TC SHC PI
Indoor Air Temp. °F DB / °F WB
77 / 64
80 / 67
TC SHC PI TC SHC PI
86 / 72 TC SHC PI
90 / 75 TC SHC PI
-4
10.91 7.83 0.52 11.59 8.27 0.54 12.27 8.00 0.56 12.76 8.17 0.57 13.62 8.24 0.58 14.30 8.40 0.59
0
10.91 7.87 0.53 11.58 8.32 0.55 12.26 8.05 0.57 12.75 8.22 0.57 13.62 8.29 0.58 14.29 8.45 0.59
5
10.90 7.94 0.53 11.57 8.38 0.55 12.25 8.12 0.57 12.74 8.29 0.58 13.61 8.36 0.59 14.28 8.52 0.60
10
10.89 8.00 0.54 11.57 8.45 0.56 12.24 8.18 0.58 12.73 8.35 0.59 13.59 8.42 0.60 14.27 8.58 0.61
15
10.88 8.06 0.55 11.56 8.52 0.57 12.23 8.25 0.59 12.72 8.42 0.60 13.58 8.49 0.61 14.26 8.65 0.62
20
10.87 8.13 0.56 11.55 8.58 0.58 12.22 8.31 0.60 12.71 8.49 0.61 13.57 8.56 0.62 14.25 8.72 0.63
25
10.86 8.19 0.57 11.54 8.65 0.59 12.21 8.38 0.61 12.70 8.55 0.62 13.56 8.62 0.63 14.24 8.79 0.64
30
10.86 8.25 0.57 11.53 8.72 0.60 12.20 8.44 0.62 12.69 8.62 0.62 13.55 8.69 0.64 14.23 8.85 0.65
35
10.85 8.31 0.58 11.52 8.78 0.60 12.20 8.50 0.63 12.68 8.68 0.63 13.54 8.76 0.64 14.22 8.92 0.66
40
10.84 8.38 0.59 11.51 8.85 0.61 12.19 8.57 0.63 12.67 8.75 0.64 13.53 8.82 0.65 14.21 8.99 0.67
45
10.83 8.44 0.60 11.50 8.91 0.62 12.18 8.63 0.64 12.66 8.81 0.65 13.52 8.89 0.66 14.19 9.06 0.68
50
10.82 8.50 0.61 11.50 8.98 0.63 12.17 8.70 0.65 12.65 8.88 0.66 13.51 8.95 0.67 14.18 9.12 0.68
55
10.81 8.56 0.61 11.49 9.05 0.64 12.16 8.76 0.66 12.64 8.94 0.67 13.50 9.02 0.68 14.17 9.19 0.69
60
10.81 8.63 0.62 11.48 9.11 0.64 12.15 8.82 0.67 12.63 9.01 0.68 13.49 9.08 0.69 14.16 9.26 0.70
65
10.80 8.69 0.63 11.47 9.18 0.65 12.14 8.89 0.68 12.62 9.07 0.68 13.48 9.15 0.70 14.15 9.32 0.71
70
10.79 8.75 0.64 11.46 9.24 0.66 12.13 8.95 0.69 12.61 9.14 0.69 13.47 9.22 0.71 14.14 9.39 0.72
75
10.53 8.61 0.67 11.20 9.10 0.70 11.87 8.82 0.72 12.35 9.02 0.73 13.20 9.10 0.74 13.87 9.28 0.76
80
10.27 8.46 0.71 10.94 8.96 0.73 11.60 8.70 0.76 12.09 8.89 0.77 12.94 8.99 0.78 13.60 9.17 0.80
85
10.01 8.30 0.74 10.68 8.81 0.77 11.34 8.56 0.80 11.82 8.76 0.81 12.67 8.87 0.82 13.34 9.06 0.84
90
9.76 8.15 0.78 10.42 8.65 0.80 11.08 8.42 0.83 11.56 8.63 0.84 12.41 8.74 0.86 13.07 8.94 0.88
95
9.48 8.06 0.81 10.14 8.58 0.84 10.80 8.36 0.87 11.10 8.44 0.88 12.12 8.70 0.90 12.78 8.90 0.91
100
9.25 7.85 0.84 9.91 8.36 0.87 10.57 8.16 0.91 10.96 8.31 0.92 11.89 8.51 0.93 12.55 8.72 0.95
105
9.02 7.63 0.88 9.68 8.14 0.91 10.34 7.96 0.94 10.81 8.18 0.95 11.66 8.32 0.97 12.32 8.54 0.99
110
8.78 7.37 0.91 9.44 7.88 0.95 10.10 7.71 0.98 10.58 7.93 0.99 11.43 8.09 1.01 12.09 8.30 1.03
115
8.55 7.15 0.95 9.21 7.66 0.98 9.87 7.51 1.02 10.35 7.73 1.03 11.19 7.89 1.05 11.85 8.11 1.07
118
8.42 7.10 0.97 9.08 7.61 1.00 9.74 7.47 1.04 10.21 7.69 1.05 11.06 7.87 1.07 11.72 8.09 1.09
122
8.37 7.08 1.00 9.03 7.60 1.03 9.69 7.46 1.07 10.17 7.68 1.08 11.01 7.86 1.10 11.67 8.08 1.12
DB: Dry Bulb Temperature (°F) WB: Wet Bulb Temperature (°F) TC: Total Capacity (kBtu/h)
SHC: Sensible Capacity (kBtu/h) PI: Power Input (kW) (includes compressor, indoor fan motor and outdoor fan motor)
1. All capacities are net, evaporator fan motor heat is deducted.
2. Cooling range can be extended from 0°F down to -4°F using the Low Ambient Wind Baffle Kit (sold separately).
3. Grey shading indicates reference data. When operating at this temperature, these values can be different if the system is not running consistently.
4. Direct interpolation is permissible. Do not extrapolate.
Capacity as rated: 0 ft. above sea level with 24.6 ft. of refrigerant piping. 0 ft. level difference between outdoor and indoor units.
Cooling capacity rating obtained with air entering the indoor unit at 80ºF dry bulb (DB) and 67ºF wet bulb (WB), and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
46 | PERFORMANCE DATA
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PERFORMANCE DATA
Cooling Capacity LC188HV4
Cooling Capacity Table for LC188HV4 (LUU189HV + LCN188HV4)
Table 20: LCN188HV4 / LUU189HV Cooling Capacities.
Outdoor Air Temp. (°F DB)
-4 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122
68 / 57 TC SHC PI
17.70 11.95 0.85 17.69 12.02 0.86 17.67 12.12 0.88 17.66 12.22 0.89 17.65 12.32 0.90 17.63 12.41 0.91 17.62 12.51 0.93 17.60 12.61 0.94 17.59 12.70 0.95 17.58 12.80 0.97 17.56 12.89 0.98 17.55 12.99 0.99 17.54 13.08 1.00 17.52 13.18 1.02 17.51 13.27 1.03 17.50 13.37 1.04 17.08 13.15 1.10 16.66 12.92 1.16 16.24 12.69 1.21 15.82 12.45 1.27 15.37 12.32 1.33 14.99 11.99 1.38 14.62 11.66 1.44 14.24 11.26 1.49 13.87 10.92 1.55 13.65 10.84 1.58 13.57 10.82 1.63
73 / 61 TC SHC PI
18.80 12.62 0.88 18.79 12.70 0.89 18.77 12.81 0.91 18.76 12.91 0.92 18.74 13.01 0.93 18.73 13.11 0.95 18.71 13.22 0.96 18.70 13.32 0.97 18.68 13.42 0.99 18.67 13.52 1.00 18.66 13.62 1.01 18.64 13.72 1.03 18.63 13.82 1.04 18.61 13.92 1.05 18.60 14.02 1.07 18.58 14.12 1.08 18.16 13.91 1.14 17.74 13.69 1.20 17.32 13.46 1.26 16.90 13.22 1.32 16.44 13.10 1.37 16.06 12.77 1.43 15.69 12.44 1.49 15.32 12.04 1.55 14.94 11.70 1.61 14.72 11.63 1.64 14.64 11.61 1.69
Indoor Air Temp. °F DB / °F WB
77 / 64
80 / 67
TC SHC PI TC SHC PI
19.89 12.22 0.92 20.69 12.48 0.93
19.88 12.29 0.93 20.68 12.55 0.94
19.87 12.40 0.94 20.66 12.66 0.95
19.85 12.50 0.95 20.64 12.76 0.97
19.84 12.60 0.97 20.63 12.86 0.98
19.82 12.70 0.98 20.61 12.96 0.99
19.81 12.80 1.00 20.60 13.06 1.01
19.79 12.89 1.01 20.58 13.17 1.02
19.78 12.99 1.02 20.57 13.27 1.04
19.76 13.09 1.04 20.55 13.37 1.05
19.75 13.19 1.05 20.53 13.46 1.06
19.73 13.28 1.07 20.52 13.56 1.08
19.72 13.38 1.08 20.50 13.66 1.09
19.70 13.48 1.09 20.49 13.76 1.11
19.69 13.58 1.11 20.47 13.86 1.12
19.67 13.67 1.12 20.46 13.96 1.13
19.24 13.48 1.18 20.03 13.78 1.20
18.82 13.28 1.24 19.60 13.58 1.26
18.40 13.08 1.30 19.17 13.38 1.32
17.97 12.87 1.36 18.75 13.18 1.38
17.51 12.77 1.42 18.00 12.89 1.44
17.13 12.46 1.48 17.77 12.69 1.50
16.76 12.16 1.54 17.53 12.49 1.56
16.39 11.78 1.61 17.16 12.12 1.62
16.01 11.47 1.67 16.79 11.81 1.68
15.79 11.41 1.70 16.56 11.75 1.72
15.71 11.39 1.75 16.49 11.74 1.77
86 / 72 TC SHC PI
22.09 12.59 0.94 22.08 12.66 0.95 22.06 12.77 0.97 22.05 12.87 0.98 22.03 12.97 1.00 22.01 13.07 1.01 22.00 13.18 1.03 21.98 13.28 1.04 21.96 13.38 1.05 21.94 13.48 1.07 21.93 13.58 1.08 21.91 13.68 1.10 21.89 13.78 1.11 21.88 13.88 1.13 21.86 13.98 1.14 21.84 14.08 1.16 21.41 13.91 1.22 20.98 13.73 1.28 20.55 13.55 1.34 20.12 13.36 1.40 19.65 13.29 1.47 19.28 13.00 1.53 18.90 12.71 1.59 18.53 12.35 1.65 18.15 12.06 1.72 17.93 12.02 1.75 17.85 12.00 1.80
90 / 75 TC SHC PI
23.19 12.82 0.96 23.18 12.90 0.97 23.16 13.01 0.99 23.14 13.11 1.00 23.12 13.22 1.02 23.11 13.32 1.03 23.09 13.42 1.05 23.07 13.53 1.06 23.05 13.63 1.08 23.04 13.73 1.09 23.02 13.84 1.11 23.00 13.94 1.12 22.98 14.04 1.13 22.97 14.14 1.15 22.95 14.24 1.16 22.93 14.35 1.18 22.50 14.18 1.24 22.06 14.02 1.31 21.63 13.84 1.37 21.20 13.66 1.43 20.72 13.60 1.50 20.35 13.32 1.56 19.97 13.04 1.62 19.60 12.68 1.69 19.22 12.39 1.75 19.00 12.36 1.79 18.92 12.35 1.84
DB: Dry Bulb Temperature (°F) WB: Wet Bulb Temperature (°F) TC: Total Capacity (kBtu/h)
SHC: Sensible Capacity (kBtu/h) PI: Power Input (kW) (includes compressor, indoor fan motor and outdoor fan motor)
1. All capacities are net, evaporator fan motor heat is deducted.
2. Cooling range can be extended from 5°F down to -4°F using the Low Ambient Wind Baffle Kit (sold separately).
3. Grey shading indicates reference data. When operating at this temperature, these values can be different if the system is not running consistently.
4. Direct interpolation is permissible. Do not extrapolate.
Capacity as rated: 0 ft. above sea level with 24.6 ft. of refrigerant piping. 0 ft. level difference between outdoor and indoor units.
Cooling capacity rating obtained with air entering the indoor unit at 80ºF dry bulb (DB) and 67ºF wet bulb (WB), and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
Performance Data
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PERFORMANCE DATA | 47
Four-Way Ceiling-Cassette System Engineering Manual
PERFORMANCE DATA
Cooling Capacity LC248HV
Cooling Capacity Table for LC248HV (LUU249HV + LCN248HV)
Table 21: LCN248HV / LUU249HV Cooling Capacities.
Outdoor Air Temp. (°F DB)
-4 -0.4 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122
68 / 57 TC SHC PI
23.60 17.58 1.12 23.58 17.68 1.14 23.56 17.84 1.15 23.55 17.98 1.17 23.53 18.12 1.19 23.51 18.26 1.21 23.49 18.40 1.22 23.47 18.54 1.24 23.46 18.69 1.26 23.44 18.83 1.27 23.42 18.97 1.29 23.40 19.11 1.31 23.38 19.25 1.33 23.37 19.39 1.34 23.35 19.53 1.36 23.33 19.67 1.38 22.77 19.34 1.45 22.21 19.01 1.53 21.65 18.66 1.60 21.09 18.31 1.67 20.49 18.12 1.75 19.99 17.63 1.82 19.49 17.15 1.90 18.99 16.56 1.97 18.49 16.07 2.05 18.19 15.95 2.09 18.10 15.91 2.15
73 / 61 TC SHC PI
25.06 18.57 1.17 25.05 18.68 1.18 25.03 18.84 1.20 25.01 18.99 1.21 24.99 19.14 1.23 24.97 19.29 1.25 24.95 19.44 1.27 24.93 19.59 1.29 24.91 19.74 1.30 24.89 19.89 1.32 24.87 20.04 1.34 24.85 20.18 1.36 24.84 20.33 1.37 24.82 20.48 1.39 24.80 20.63 1.41 24.78 20.77 1.43 24.21 20.46 1.50 23.65 20.14 1.58 23.09 19.80 1.66 22.53 19.45 1.74 21.92 19.28 1.81 21.42 18.79 1.89 20.92 18.31 1.97 20.42 17.71 2.04 19.92 17.21 2.12 19.62 17.11 2.17 19.52 17.07 2.23
Indoor Air Temp. °F DB / °F WB
77 / 64
80 / 67
TC SHC PI TC SHC PI
26.53 17.98 1.21 27.58 18.36 1.22
26.51 18.09 1.22 27.57 18.47 1.23
26.49 18.24 1.24 27.55 18.63 1.26
26.47 18.39 1.26 27.53 18.78 1.27
26.45 18.53 1.28 27.50 18.92 1.29
26.43 18.68 1.30 27.48 19.07 1.31
26.41 18.82 1.31 27.46 19.22 1.33
26.39 18.97 1.33 27.44 19.37 1.35
26.37 19.11 1.35 27.42 19.51 1.37
26.35 19.26 1.37 27.40 19.66 1.38
26.33 19.40 1.39 27.38 19.81 1.40
26.31 19.54 1.41 27.36 19.96 1.42
26.29 19.69 1.42 27.34 20.10 1.44
26.27 19.83 1.44 27.32 20.25 1.46
26.25 19.97 1.46 27.29 20.39 1.48
26.23 20.11 1.48 27.27 20.54 1.50
25.66 19.83 1.56 26.70 20.26 1.58
25.09 19.54 1.64 26.13 19.98 1.66
24.53 19.24 1.72 25.57 19.69 1.74
23.96 18.93 1.80 25.00 19.39 1.82
23.35 18.78 1.88 24.00 18.96 1.90
22.85 18.33 1.96 23.69 18.67 1.98
22.35 17.89 2.04 23.38 18.37 2.06
21.85 17.33 2.12 22.88 17.82 2.14
21.35 16.88 2.20 22.38 17.37 2.22
21.05 16.79 2.25 22.08 17.29 2.27
20.95 16.76 2.31 21.98 17.27 2.34
86 / 72 TC SHC PI
29.46 18.52 1.24 29.44 18.62 1.26 29.42 18.79 1.28 29.39 18.93 1.30 29.37 19.08 1.32 29.35 19.23 1.34 29.33 19.38 1.35 29.30 19.53 1.37 29.28 19.68 1.39 29.26 19.83 1.41 29.24 19.98 1.43 29.21 20.12 1.45 29.19 20.27 1.47 29.17 20.42 1.49 29.15 20.56 1.51 29.13 20.71 1.52 28.55 20.46 1.61 27.97 20.20 1.69 27.40 19.93 1.77 26.83 19.65 1.85 26.20 19.55 1.94 25.70 19.12 2.02 25.20 18.70 2.10 24.70 18.17 2.18 24.20 17.74 2.26 23.90 17.68 2.31 23.81 17.66 2.38
90 / 75 TC SHC PI
30.92 18.87 1.27 30.91 18.98 1.28 30.88 19.14 1.30 30.86 19.29 1.32 30.83 19.45 1.34 30.81 19.60 1.36 30.79 19.75 1.38 30.76 19.90 1.40 30.74 20.05 1.42 30.72 20.20 1.44 30.69 20.35 1.46 30.67 20.50 1.48 30.64 20.65 1.50 30.62 20.80 1.52 30.60 20.95 1.54 30.57 21.10 1.56 29.99 20.87 1.64 29.42 20.62 1.72 28.84 20.36 1.81 28.27 20.09 1.89 27.63 20.01 1.97 27.13 19.59 2.06 26.63 19.18 2.14 26.13 18.66 2.23 25.63 18.23 2.31 25.33 18.19 2.36 25.23 18.17 2.43
DB: Dry Bulb Temperature (°F) WB: Wet Bulb Temperature (°F) TC: Total Capacity (kBtu/h)
SHC: Sensible Capacity (kBtu/h) PI: Power Input (kW) (includes compressor, indoor fan motor and outdoor fan motor)
1. All capacities are net, evaporator fan motor heat is deducted.
2. Cooling range can be extended from 5°F down to -4°F using the Low Ambient Wind Baffle Kit (sold separately).
3. Grey shading indicates reference data. When operating at this temperature, these values can be different if the system is not running consistently.
4. Direct interpolation is permissible. Do not extrapolate.
Capacity as rated: 0 ft. above sea level with 24.6 ft. of refrigerant piping. 0 ft. level difference between outdoor and indoor units.
Cooling capacity rating obtained with air entering the indoor unit at 80ºF dry bulb (DB) and 67ºF wet bulb (WB), and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
48 | PERFORMANCE DATA
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PERFORMANCE DATA
Cooling Capacity LC368HV
Cooling Capacity Table for LC368HV (LUU369HV + LCN368HV)
Table 22: LCN368HV / LUU369HV Cooling Capacities.
Outdoor Air Temp. (°F DB)
-4 -0.4 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122
68 / 57 TC SHC PI
35.39 25.20 1.70 35.37 25.35 1.72 35.34 25.57 1.75 35.32 25.77 1.78 35.29 25.98 1.80 35.26 26.18 1.83 35.24 26.38 1.85 35.21 26.59 1.88 35.18 26.79 1.91 35.16 26.99 1.93 35.13 27.19 1.96 35.10 27.39 1.98 35.08 27.59 2.01 35.05 27.79 2.04 35.02 27.99 2.06 34.99 28.19 2.09 34.15 27.73 2.20 33.31 27.25 2.31 32.48 26.76 2.42 31.64 26.25 2.54 30.74 25.98 2.65 29.99 25.28 2.76 29.24 24.58 2.88 28.49 23.74 2.99 27.74 23.03 3.10 27.29 22.87 3.17 27.14 22.81 3.26
73 / 61 TC SHC PI
37.59 26.62 1.77 37.57 26.78 1.79 37.54 27.01 1.81 37.51 27.23 1.84 37.48 27.44 1.87 37.45 27.66 1.89 37.43 27.87 1.92 37.40 28.08 1.95 37.37 28.30 1.98 37.34 28.51 2.00 37.31 28.72 2.03 37.28 28.93 2.06 37.25 29.15 2.08 37.23 29.36 2.11 37.20 29.57 2.14 37.17 29.78 2.16 36.32 29.33 2.28 35.47 28.87 2.40 34.63 28.38 2.51 33.79 27.88 2.63 32.88 27.64 2.75 32.13 26.94 2.86 31.38 26.24 2.98 30.63 25.39 3.10 29.88 24.68 3.21 29.43 24.53 3.28 29.28 24.48 3.38
Indoor Air Temp. °F DB / °F WB
77 / 64
80 / 67
TC SHC PI TC SHC PI
39.79 25.78 1.83 41.38 26.32 1.85
39.77 25.93 1.85 41.35 26.47 1.87
39.73 26.15 1.88 41.32 26.70 1.90
39.70 26.36 1.91 41.29 26.92 1.93
39.67 26.57 1.94 41.26 27.13 1.96
39.64 26.78 1.96 41.23 27.34 1.99
39.61 26.99 1.99 41.19 27.55 2.01
39.58 27.19 2.02 41.16 27.76 2.04
39.55 27.40 2.05 41.13 27.98 2.07
39.52 27.61 2.08 41.10 28.19 2.10
39.49 27.81 2.10 41.07 28.40 2.13
39.46 28.02 2.13 41.04 28.61 2.16
39.43 28.22 2.16 41.01 28.82 2.18
39.40 28.43 2.19 40.97 29.03 2.21
39.37 28.63 2.21 40.94 29.23 2.24
39.34 28.84 2.24 40.91 29.44 2.27
38.49 28.43 2.36 40.05 29.05 2.39
37.64 28.02 2.48 39.20 28.65 2.51
36.79 27.58 2.61 38.35 28.23 2.64
35.94 27.13 2.73 37.50 27.79 2.76
35.02 26.93 2.85 36.00 27.18 2.88
34.27 26.28 2.97 35.53 26.76 3.00
33.52 25.64 3.09 35.07 26.34 3.12
32.77 24.85 3.21 34.32 25.55 3.25
32.02 24.19 3.33 33.57 24.90 3.37
31.57 24.07 3.40 33.12 24.79 3.44
31.43 24.03 3.50 32.97 24.75 3.54
86 / 72 TC SHC PI
44.19 26.54 1.89 44.16 26.70 1.91 44.12 26.93 1.94 44.09 27.14 1.97 44.06 27.36 2.00 44.02 27.57 2.02 43.99 27.79 2.05 43.96 28.00 2.08 43.92 28.21 2.11 43.89 28.42 2.14 43.86 28.64 2.17 43.82 28.85 2.20 43.79 29.06 2.22 43.76 29.27 2.25 43.72 29.48 2.28 43.69 29.69 2.31 42.82 29.33 2.44 41.96 28.96 2.56 41.10 28.57 2.68 40.25 28.17 2.81 39.30 28.02 2.93 38.55 27.42 3.06 37.80 26.81 3.18 37.05 26.05 3.31 36.31 25.43 3.43 35.86 25.34 3.51 35.71 25.31 3.61
90 / 75 TC SHC PI
46.38 27.05 1.92 46.36 27.20 1.95 46.32 27.44 1.98 46.28 27.66 2.01 46.25 27.88 2.04 46.21 28.09 2.06 46.18 28.31 2.09 46.14 28.53 2.12 46.11 28.75 2.15 46.07 28.96 2.18 46.04 29.18 2.21 46.00 29.39 2.24 45.97 29.61 2.27 45.93 29.82 2.30 45.90 30.04 2.33 45.86 30.25 2.36 44.99 29.91 2.48 44.12 29.56 2.61 43.26 29.19 2.74 42.40 28.81 2.87 41.44 28.68 2.99 40.69 28.09 3.12 39.94 27.50 3.25 39.20 26.75 3.37 38.45 26.14 3.50 38.00 26.07 3.58 37.85 26.04 3.68
DB: Dry Bulb Temperature (°F) WB: Wet Bulb Temperature (°F) TC: Total Capacity (kBtu/h)
SHC: Sensible Capacity (kBtu/h) PI: Power Input (kW) (includes compressor, indoor fan motor and outdoor fan motor)
1. All capacities are net, evaporator fan motor heat is deducted.
2. Cooling range can be extended from 5°F down to -4°F using the Low Ambient Wind Baffle Kit (sold separately).
3. Grey shading indicates reference data. When operating at this temperature, these values can be different if the system is not running consistently.
4. Direct interpolation is permissible. Do not extrapolate.
Capacity as rated: 0 ft. above sea level with 24.6 ft. of refrigerant piping. 0 ft. level difference between outdoor and indoor units.
Cooling capacity rating obtained with air entering the indoor unit at 80ºF dry bulb (DB) and 67ºF wet bulb (WB), and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
Performance Data
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PERFORMANCE DATA | 49
Four-Way Ceiling-Cassette System Engineering Manual
PERFORMANCE DATA
Cooling Capacity LC428HV
Cooling Capacity Table for LC428HV (LUU429HV + LCN428HV)
Table 23: LCN428HV / LUU429HV Cooling Capacities.
Outdoor Air Temp. (°F DB)
-4 -0.4 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122
68 / 57 TC SHC PI
41.29 28.74 2.41 41.27 28.91 2.43 41.24 29.16 2.47 41.20 29.39 2.51 41.17 29.62 2.55 41.14 29.86 2.58 41.11 30.09 2.62 41.08 30.32 2.66 41.05 30.55 2.69 41.02 30.78 2.73 40.98 31.01 2.77 40.95 31.24 2.80 40.92 31.47 2.84 40.89 31.69 2.88 40.86 31.92 2.91 40.83 32.15 2.95 39.84 31.62 3.11 38.86 31.08 3.27 37.89 30.51 3.43 36.91 29.94 3.59 35.86 29.62 3.75 34.98 28.83 3.90 34.11 28.04 4.06 33.24 27.08 4.22 32.37 26.27 4.38 31.84 26.08 4.48 31.67 26.01 4.60
73 / 61 TC SHC PI
43.86 30.36 2.50 43.83 30.54 2.52 43.80 30.80 2.56 43.76 31.05 2.60 43.73 31.29 2.64 43.70 31.54 2.68 43.66 31.78 2.72 43.63 32.03 2.75 43.60 32.27 2.79 43.56 32.51 2.83 43.53 32.76 2.87 43.50 33.00 2.91 43.46 33.24 2.94 43.43 33.48 2.98 43.40 33.72 3.02 43.36 33.96 3.06 42.37 33.45 3.22 41.39 32.92 3.39 40.41 32.36 3.55 39.43 31.80 3.72 38.36 31.51 3.88 37.48 30.72 4.05 36.61 29.93 4.21 35.74 28.96 4.38 34.86 28.14 4.54 34.34 27.97 4.64 34.16 27.91 4.77
Indoor Air Temp. °F DB / °F WB
77 / 64
80 / 67
TC SHC PI TC SHC PI
46.42 29.40 2.59 48.27 30.02 2.62
46.40 29.57 2.62 48.25 30.19 2.65
46.36 29.83 2.66 48.21 30.45 2.69
46.32 30.06 2.70 48.17 30.70 2.73
46.29 30.30 2.74 48.13 30.94 2.77
46.25 30.54 2.78 48.10 31.18 2.81
46.22 30.77 2.82 48.06 31.42 2.85
46.18 31.01 2.85 48.02 31.66 2.89
46.15 31.25 2.89 47.99 31.90 2.93
46.11 31.48 2.93 47.95 32.14 2.97
46.07 31.72 2.97 47.91 32.38 3.01
46.04 31.95 3.01 47.88 32.62 3.05
46.00 32.18 3.05 47.84 32.86 3.09
45.97 32.42 3.09 47.80 33.10 3.13
45.93 32.65 3.13 47.77 33.34 3.17
45.90 32.88 3.17 47.73 33.58 3.21
44.90 32.42 3.34 46.73 33.13 3.38
43.91 31.95 3.51 45.73 32.67 3.55
42.92 31.45 3.68 44.74 32.19 3.72
41.94 30.94 3.85 43.75 31.69 3.90
40.85 30.71 4.02 42.00 31.00 4.07
39.98 29.97 4.19 41.46 30.52 4.24
39.11 29.24 4.37 40.91 30.04 4.42
38.23 28.34 4.54 40.04 29.14 4.59
37.36 27.59 4.71 39.17 28.40 4.76
36.84 27.45 4.81 38.64 28.27 4.87
36.66 27.40 4.95 38.47 28.23 5.00
86 / 72 TC SHC PI
51.55 30.27 2.67 51.52 30.45 2.69 51.48 30.71 2.74 51.44 30.96 2.78 51.40 31.20 2.82 51.36 31.44 2.86 51.32 31.69 2.90 51.28 31.93 2.94 51.24 32.17 2.98 51.20 32.41 3.02 51.17 32.66 3.06 51.13 32.90 3.10 51.09 33.14 3.14 51.05 33.38 3.18 51.01 33.62 3.22 50.97 33.86 3.27 49.96 33.45 3.44 48.95 33.03 3.62 47.96 32.58 3.79 46.96 32.13 3.97 45.85 31.95 4.15 44.98 31.26 4.32 44.10 30.58 4.50 43.23 29.71 4.67 42.36 29.00 4.85 41.83 28.90 4.96 41.66 28.87 5.10
90 / 75 TC SHC PI
54.11 30.84 2.72 54.08 31.02 2.75 54.04 31.29 2.79 54.00 31.54 2.84 53.96 31.79 2.88 53.92 32.04 2.92 53.88 32.29 2.96 53.83 32.53 3.00 53.79 32.78 3.04 53.75 33.03 3.08 53.71 33.27 3.12 53.67 33.52 3.17 53.63 33.77 3.21 53.59 34.01 3.25 53.55 34.26 3.29 53.50 34.50 3.33 52.49 34.11 3.51 51.48 33.71 3.69 50.47 33.28 3.87 49.47 32.85 4.05 48.35 32.71 4.23 47.47 32.03 4.41 46.60 31.36 4.59 45.73 30.50 4.77 44.86 29.81 4.95 44.33 29.73 5.06 44.16 29.70 5.20
DB: Dry Bulb Temperature (°F) WB: Wet Bulb Temperature (°F) TC: Total Capacity (kBtu/h)
SHC: Sensible Capacity (kBtu/h) PI: Power Input (kW) (includes compressor, indoor fan motor and outdoor fan motor)
1. All capacities are net, evaporator fan motor heat is deducted.
2. Cooling range can be extended from 5°F down to -4°F using the Low Ambient Wind Baffle Kit (sold separately).
3. Grey shading indicates reference data. When operating at this temperature, these values can be different if the system is not running consistently.
4. Direct interpolation is permissible. Do not extrapolate.
Capacity as rated: 0 ft. above sea level with 24.6 ft. of refrigerant piping. 0 ft. level difference between outdoor and indoor units.
Cooling capacity rating obtained with air entering the indoor unit at 80ºF dry bulb (DB) and 67ºF wet bulb (WB), and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
50 | PERFORMANCE DATA
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PERFORMANCE DATA
Heating Capacity LC098HV4, LC128HV4
Heating Capacity Table for LC098HV4 (LUU097HV + LCN098HV4)
Table 24: LCN098HV4 / LUU097HV Heating Capacities.
Outdoor Air Temp.
°F DB
°F WB
-4
-4.4
0
-0.4
5
4.5
10
9
17
15
20
19
25
23
30
28
35
32
40
36
45
41
47
43
50
46
55
51
60
56
63
59
68
64
61
TC
PI
4.38
0.61
5.22
0.62
6.22
0.63
6.89
0.63
7.63
0.65
8.07
0.66
8.82
0.67
9.57
0.69
10.33
0.71
10.85
0.73
11.51
0.75
11.77
0.77
11.81
0.76
11.87
0.75
11.92
0.74
11.96
0.74
11.99
0.73
64
TC
PI
4.06
0.63
4.91
0.64
5.93
0.65
6.61
0.66
7.36
0.67
7.82
0.68
8.56
0.69
9.28
0.71
10.00
0.73
10.55
0.75
11.24
0.78
11.51
0.79
11.57
0.78
11.67
0.77
11.77
0.76
11.83
0.75
11.89
0.74
Indoor Air Temp. °F DB
68
70
TC
PI
TC
PI
4.03
0.64
3.99
0.64
4.84
0.65
4.77
0.65
5.79
0.66
5.70
0.67
6.43
0.67
6.32
0.68
7.13
0.69
7.00
0.70
7.55
0.70
7.41
0.71
8.26
0.72
8.10
0.73
8.96
0.73
8.79
0.75
9.66
0.75
9.48
0.77
10.21
0.78
10.04
0.79
10.91
0.80
10.72
0.82
11.18
0.82
11.00
0.83
11.28
0.81
11.12
0.82
11.45
0.79
11.32
0.80
11.62
0.77
11.53
0.78
11.73
0.76
11.65
0.77
11.83
0.75
11.77
0.75
72
TC
PI
3.95
0.65
4.71
0.66
5.62
0.68
6.23
0.69
6.90
0.71
7.30
0.72
7.98
0.74
8.66
0.76
9.35
0.78
9.89
0.81
10.58
0.83
10.85
0.84
10.99
0.83
11.22
0.81
11.45
0.78
11.58
0.77
11.72
0.76
75
TC
PI
3.77
0.67
4.51
0.68
5.39
0.70
5.98
0.71
6.63
0.73
7.02
0.74
7.68
0.76
8.34
0.78
9.01
0.80
9.54
0.83
10.20
0.86
10.46
0.87
10.62
0.85
10.89
0.82
11.15
0.80
11.31
0.78
11.48
0.76
Heating Capacity Table for LC128HV4 (LUU127HV + LCN128HV4)
Table 25: LCN128HV4 / LUU127HV Heating Capacities.
Outdoor Air Temp.
°F DB
°F WB
-4
-4.4
0
-0.4
5
4.5
10
9
17
15
20
19
25
23
30
28
35
32
40
36
45
41
47
43
50
46
55
51
60
56
63
59
68
64
61
TC
PI
6.04
0.83
7.04
0.85
8.24
0.87
9.03
0.88
9.91
0.91
10.45
0.92
11.34
0.95
12.24
0.98
13.14
1.02
13.81
1.05
14.65
1.08
14.99
1.10
15.03
1.09
15.10
1.08
15.18
1.07
15.22
1.06
15.26
1.05
64
TC
PI
5.61
0.86
6.63
0.88
7.85
0.90
8.67
0.91
9.57
0.94
10.11
0.95
11.00
0.98
11.86
1.02
12.73
1.05
13.43
1.08
14.30
1.12
14.65
1.13
14.73
1.12
14.85
1.11
14.98
1.09
15.05
1.08
15.13
1.07
Indoor Air Temp. °F DB
68
70
TC
PI
TC
PI
5.56
0.87
5.50
0.88
6.52
0.89
6.43
0.90
7.66
0.92
7.54
0.93
8.43
0.94
8.28
0.95
9.27
0.96
9.10
0.98
9.78
0.98
9.60
1.00
10.62
1.01
10.42
1.04
11.46
1.05
11.25
1.07
12.29
1.08
12.07
1.10
13.00
1.11
12.77
1.14
13.88
1.15
13.65
1.17
14.23
1.17
14.00
1.19
14.36
1.16
14.15
1.17
14.58
1.13
14.41
1.14
14.80
1.11
14.67
1.12
14.92
1.09
14.82
1.10
15.06
1.08
14.98
1.08
72
TC
PI
5.44
0.88
6.36
0.91
7.44
0.93
8.17
0.96
8.97
0.99
9.45
1.02
10.26
1.05
11.08
1.09
11.89
1.12
12.59
1.15
13.46
1.19
13.81
1.21
13.99
1.19
14.28
1.15
14.57
1.12
14.74
1.10
14.92
1.08
75
TC
PI
5.20
0.92
6.09
0.94
7.14
0.97
7.85
0.99
8.62
1.02
9.09
1.04
9.87
1.08
10.67
1.12
11.46
1.15
12.14
1.18
12.98
1.23
13.31
1.24
13.52
1.22
13.85
1.18
14.19
1.14
14.40
1.12
14.61
1.09
DB: Dry Bulb Temperature (°F) WB: Wet Bulb Temperature (°F) TC: Total Capacity (kBtu/h) PI: Power Input (kW) (includes compressor, indoor fan motor and outdoor fan motor) 1. All capacities are net, evaporator fan motor heat is deducted. 2. Direct interpolation is permissible. Do not extrapolate.
Capacity as rated: 0 ft. above sea level with 24.6 ft. of refrigerant piping. 0 ft. level difference between outdoor and indoor units.
Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60ºF wet bulb (WB), and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).
Performance Data
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PERFORMANCE DATA | 51
Four-Way Ceiling-Cassette System Engineering Manual
PERFORMANCE DATA
Heating Capacity LC188HV4, LC248HV
Heating Capacity Table for LC188HV4 (LUU189HV + LCN188HV4)
Table 27: LCN188HV4 / LUU189HV Heating Capacities.
Outdoor Air Temp.
°F DB
°F WB
-4
-4.4
0
-0.4
5
4.5
10
9
17
15
20
19
25
23
30
28
35
32
40
36
45
41
47
43
50
46
55
51
60
56
63
59
68
64
61
TC
PI
9.61
6.86
10.70
6.43
12.01
5.91
12.88
5.43
13.84
4.79
14.42
4.36
15.39
3.93
16.38
3.40
17.37
2.97
18.25
2.55
19.36
2.01
19.80
1.80
19.86
1.79
19.96
1.77
20.06
1.75
20.11
1.74
20.17
1.73
64
TC
PI
8.97
7.08
10.10
6.64
11.46
6.10
12.36
5.60
13.36
4.94
13.96
4.50
14.94
4.06
15.87
3.51
16.82
3.07
17.74
2.63
18.90
2.08
19.36
1.86
19.46
1.84
19.63
1.81
19.79
1.78
19.89
1.77
19.99
1.75
Indoor Air Temp. °F DB
68
70
TC
PI
TC
PI
8.87
7.30
8.76
7.42
9.92
6.84
9.78
6.96
11.18
6.29
10.99
6.39
12.01
5.78
11.81
5.87
12.93
5.10
12.70
5.18
13.49
4.64
13.24
4.72
14.42
4.19
14.15
4.26
15.33
3.62
15.05
3.68
16.24
3.17
15.95
3.22
17.18
2.71
16.88
2.76
18.34
2.14
18.04
2.18
18.81
1.92
18.50
1.95
18.98
1.89
18.70
1.92
19.26
1.85
19.04
1.88
19.55
1.82
19.38
1.83
19.72
1.79
19.59
1.80
19.90
1.77
19.79
1.77
72
TC
PI
8.67
7.51
9.66
7.05
10.85
6.47
11.64
5.95
12.51
5.25
13.04
4.78
13.93
4.31
14.82
3.73
15.72
3.26
16.64
2.79
17.79
2.21
18.25
1.98
18.48
1.94
18.87
1.89
19.25
1.84
19.48
1.81
19.71
1.78
75
TC
PI
8.29
7.73
9.26
7.25
10.41
6.66
11.18
6.12
12.03
5.40
12.55
4.92
13.40
4.44
14.28
3.84
15.15
3.36
16.04
2.88
17.15
2.28
17.59
2.04
17.86
2.00
18.31
1.93
18.76
1.87
19.03
1.83
19.30
1.79
Heating Capacity Table for LC248HV (LUU249HV + LCN248HV)
Table 26: LCN248HV / LUU249HV Heating Capacities.
Outdoor Air Temp.
°F DB
°F WB
-4
-4.4
0
-0.4
5
4.5
10
9
17
15
20
19
25
23
30
28
35
32
40
36
45
41
47
43
50
46
55
51
60
56
63
59
68
64
61
TC
PI
13.03
1.46
14.47
1.51
16.07
1.58
17.43
1.65
19.07
1.73
20.10
1.78
21.84
1.84
23.60
1.91
25.35
1.97
26.64
2.02
28.26
2.09
28.90
2.12
28.99
2.11
29.13
2.09
29.27
2.06
29.35
2.05
29.44
2.04
64
TC
PI
12.24
1.50
13.71
1.56
15.34
1.63
16.73
1.70
18.40
1.78
19.46
1.84
21.19
1.90
22.87
1.97
24.54
2.03
25.89
2.09
27.58
2.16
28.26
2.19
28.40
2.17
28.65
2.14
28.89
2.10
29.03
2.08
29.18
2.06
Indoor Air Temp. °F DB
68
70
TC
PI
TC
PI
12.06
1.55
11.89
1.57
13.44
1.61
13.23
1.63
14.96
1.68
14.72
1.71
16.26
1.75
15.98
1.78
17.82
1.84
17.50
1.87
18.81
1.90
18.46
1.93
20.46
1.96
20.07
1.99
22.08
2.04
21.67
2.07
23.71
2.10
23.28
2.13
25.07
2.16
24.63
2.19
26.77
2.23
26.32
2.27
27.45
2.26
27.00
2.30
27.70
2.23
27.30
2.27
28.12
2.19
27.79
2.21
28.53
2.14
28.29
2.16
28.78
2.11
28.59
2.12
29.04
2.09
28.89
2.09
72
TC
PI
11.76
1.59
13.07
1.65
14.52
1.73
15.76
1.80
17.24
1.89
18.18
1.96
19.76
2.02
21.35
2.10
22.94
2.16
24.29
2.22
25.97
2.30
26.64
2.33
26.98
2.29
27.54
2.23
28.09
2.17
28.43
2.13
28.77
2.10
75
TC
PI
11.26
1.64
12.53
1.70
13.94
1.78
15.14
1.85
16.58
1.95
17.49
2.01
19.02
2.08
20.57
2.16
22.11
2.22
23.41
2.29
25.02
2.37
25.67
2.40
26.07
2.36
26.72
2.28
27.38
2.20
27.77
2.16
28.17
2.11
DB: Dry Bulb Temperature (°F) WB: Wet Bulb Temperature (°F) TC: Total Capacity (kBtu/h) PI: Power Input (kW) (includes compressor, indoor fan motor and outdoor fan motor) 1. All capacities are net, evaporator fan motor heat is deducted. 2. Direct interpolation is permissible. Do not extrapolate.
Capacity as rated: 0 ft. above sea level with 24.6 ft. of refrigerant piping. 0 ft. level difference between outdoor and indoor units.
Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60ºF wet bulb (WB), and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).
52 | PERFORMANCE DATA
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Performance Data
PERFORMANCE DATA
Heating Capacity LC368HV, LC428HV
Heating Capacity Table for LC368HV (LUU369HV + LCN368HV)
Table 28: LCN368HV / LUU369HV Heating Capacities.
Outdoor Air Temp.
°F DB
°F WB
-4
-4.4
0
-0.4
5
4.5
10
9
17
15
20
19
25
23
30
28
35
32
40
36
45
41
47
43
50
46
55
51
60
56
63
59
68
64
61
TC
PI
15.17
2.04
17.79
2.12
20.70
2.21
23.18
2.30
26.15
2.41
28.03
2.49
31.19
2.57
34.37
2.66
37.55
2.74
39.47
2.82
41.86
2.91
42.82
2.95
42.94
2.93
43.15
2.90
43.36
2.87
43.49
2.85
43.61
2.83
64
TC
PI
14.16
2.10
16.81
2.18
19.74
2.28
22.24
2.37
25.24
2.49
27.14
2.57
30.27
2.65
33.31
2.75
36.36
2.83
38.36
2.91
40.86
3.01
41.86
3.05
42.08
3.02
42.44
2.97
42.80
2.93
43.01
2.90
43.23
2.87
Indoor Air Temp. °F DB
68
70
TC
PI
TC
PI
14.01
2.17
13.83
2.20
16.50
2.25
16.26
2.29
19.26
2.35
18.95
2.39
21.62
2.44
21.25
2.48
24.44
2.57
24.00
2.61
26.24
2.65
25.75
2.69
29.21
2.73
28.66
2.78
32.17
2.84
31.58
2.88
35.12
2.92
34.49
2.97
37.14
3.00
36.49
3.05
39.66
3.10
39.00
3.16
40.66
3.15
40.00
3.20
41.04
3.11
40.44
3.15
41.65
3.04
41.18
3.08
42.27
2.98
41.91
3.00
42.64
2.94
42.35
2.96
43.02
2.90
42.80
2.91
72
TC
PI
13.68
2.23
16.06
2.31
18.70
2.42
20.95
2.52
23.65
2.64
25.36
2.73
28.22
2.82
31.10
2.92
33.98
3.01
35.98
3.09
38.47
3.20
39.47
3.24
39.97
3.19
40.79
3.11
41.62
3.02
42.12
2.97
42.62
2.92
75
TC
PI
13.08
2.29
15.39
2.38
17.95
2.49
20.12
2.59
22.74
2.72
24.40
2.81
27.16
2.90
29.96
3.01
32.76
3.10
34.68
3.19
37.07
3.30
38.03
3.34
38.62
3.28
39.59
3.17
40.56
3.07
41.14
3.00
41.73
2.94
Heating Capacity Table for LC428HV (LUU429HV + LCN428HV)
Table 29: LCN428HV / LUU429HV Heating Capacities.
Outdoor Air Temp.
°F DB
°F WB
-4
-4.4
0
-0.4
5
4.5
10
9
17
15
20
19
25
23
30
28
35
32
40
36
45
41
47
43
50
46
55
51
60
56
63
59
68
64
61
TC
PI
13.09
2.11
16.74
2.25
20.77
2.43
24.20
2.58
28.33
2.79
30.94
2.93
35.32
3.07
39.72
3.25
44.13
3.39
46.38
3.53
49.19
3.70
50.31
3.77
50.46
3.75
50.70
3.71
50.95
3.67
51.10
3.64
51.25
3.62
64
TC
PI
12.11
2.18
15.75
2.32
19.78
2.50
23.22
2.66
27.34
2.88
29.96
3.03
34.27
3.17
38.50
3.35
42.72
3.50
45.07
3.64
48.01
3.82
49.19
3.90
49.44
3.86
49.86
3.80
50.29
3.74
50.54
3.70
50.80
3.67
Indoor Air Temp. °F DB
68
70
TC
PI
TC
PI
12.05
2.24
11.91
2.28
15.50
2.39
15.28
2.43
19.32
2.58
19.01
2.62
22.57
2.75
22.19
2.79
26.48
2.97
26.00
3.02
28.96
3.12
28.42
3.17
33.08
3.27
32.46
3.33
37.17
3.46
36.49
3.52
41.27
3.61
40.53
3.67
43.64
3.76
42.88
3.82
46.60
3.95
45.82
4.01
47.78
4.02
47.00
4.09
48.22
3.97
47.52
4.03
48.94
3.89
48.38
3.93
49.67
3.81
49.24
3.84
50.10
3.76
49.76
3.78
50.54
3.71
50.29
3.72
72
TC
PI
11.80
2.31
15.11
2.46
18.76
2.65
21.88
2.83
25.62
3.06
27.99
3.21
31.95
3.37
35.94
3.56
39.93
3.72
42.28
3.87
45.20
4.07
46.38
4.15
46.96
4.08
47.93
3.97
48.90
3.86
49.49
3.79
50.08
3.73
75
TC
PI
11.27
2.37
14.47
2.53
18.00
2.73
21.02
2.91
24.63
3.15
26.93
3.31
30.75
3.47
34.62
3.67
38.49
3.83
40.74
3.99
43.56
4.19
44.69
4.27
45.37
4.19
46.51
4.05
47.65
3.92
48.34
3.84
49.03
3.76
DB: Dry Bulb Temperature (°F) WB: Wet Bulb Temperature (°F) TC: Total Capacity (kBtu/h) PI: Power Input (kW) (includes compressor, indoor fan motor and outdoor fan motor) 1. All capacities are net, evaporator fan motor heat is deducted. 2. Direct interpolation is permissible. Do not extrapolate.
Capacity as rated: 0 ft. above sea level with 24.6 ft. of refrigerant piping. 0 ft. level difference between outdoor and indoor units.
Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60ºF wet bulb (WB), and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).
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PERFORMANCE DATA | 53
Four-Way Ceiling-Cassette System Engineering Manual
PERFORMANCE DATA
Maximum Heating Capacity LC248HV, LC368HV
Maximum Heating Capacity Table for LC248HV (LUU249HV + LCN248HV)
Table 30: LCN248HV / LUU249HV Maximum Heating Capacities.
Outdoor Air Temp.
°F DB
°F WB
-13
-13.4
-4
-4.4
0
-0.4
5
4.5
10
9
17
15
20
19
25
23
30
28
35
32
40
36
45
41
47
43
50
46
55
51
60
56
63
59
68
64
61
TC
PI
19.66
2.75
22.22
2.94
23.57
3.06
25.26
3.2
26.36
2.88
27.83
2.66
28.44
2.7
29.05
2.74
29.82
2.79
30.43
2.83
31.04
2.88
31.81
2.93
32.11
2.95
32.21
2.93
32.36
2.9
32.52
2.87
32.62
2.85
32.71
2.83
64
TC
PI
19.22
2.84
21.73
3.04
23.05
3.16
24.7
3.31
25.77
2.98
27.21
2.74
27.81
2.79
28.41
2.83
29.15
2.88
29.75
2.93
30.35
2.97
31.1
3.03
31.4
3.05
31.56
3.02
31.83
2.97
32.1
2.93
32.26
2.9
32.42
2.87
Indoor Air Temp. °F DB
68
70
TC
PI
TC
PI
18.67
2.93
18.36
2.98
21.11
3.14
20.76
3.19
22.39
3.26
22.02
3.32
23.99
3.41
23.6
3.47
25.04
3.07
24.63
3.13
26.43
2.83
26
2.88
27.01
2.88
26.57
2.93
27.59
2.92
27.14
2.97
28.32
2.98
27.86
3.03
28.9
3.02
28.43
3.07
29.48
3.07
29
3.12
30.21
3.12
29.71
3.18
30.5
3.15
30
3.2
30.78
3.11
30.33
3.15
31.24
3.04
30.88
3.08
31.7
2.98
31.43
3
31.98
2.94
31.76
2.96
32.26
2.9
32.1
2.91
72
TC
PI
18.12
3.02
20.49
3.24
21.73
3.36
23.29
3.52
24.3
3.17
25.65
2.92
26.22
2.97
26.78
3.01
27.49
3.07
28.05
3.12
28.61
3.16
29.32
3.22
29.6
3.24
29.97
3.19
30.59
3.11
31.22
3.02
31.59
2.97
31.96
2.92
75
TC
PI
17.46
3.12
19.74
3.33
20.94
3.46
22.44
3.62
23.42
3.27
24.72
3.01
25.26
3.05
25.81
3.1
26.49
3.16
27.03
3.21
27.57
3.26
28.25
3.32
28.52
3.34
28.96
3.28
29.69
3.17
30.42
3.07
30.85
3
31.3
2.94
Maximum Heating Capacity Table for LC368HV (LUU369HV + LCN368HV)
Table 31: LCN368HV / LUU369HV Maximum Heating Capacities.
Outdoor Air Temp.
°F DB
°F WB
-13
-13.4
-4
-4.4
0
-0.4
5
4.5
10
9
17
15
20
19
25
23
30
28
35
32
40
36
45
41
47
43
50
46
55
51
60
56
63
59
68
64
61
TC
PI
30.46
4.36
33.67
4.67
35.36
4.85
37.47
5.07
38.84
5.07
40.68
5.06
41.32
4.89
41.96
4.72
42.76
4.51
43.41
4.34
44.05
4.17
44.85
3.96
45.17
3.87
45.30
3.85
45.53
3.81
45.75
3.77
45.88
3.74
46.01
3.72
64
TC
PI
29.78
4.51
32.92
4.82
34.57
5.01
36.63
5.24
37.97
5.23
39.77
5.23
40.40
5.05
41.02
4.88
41.81
4.66
42.44
4.48
43.06
4.31
43.85
4.09
44.16
4.00
44.39
3.96
44.77
3.90
45.15
3.84
45.38
3.80
45.61
3.77
Indoor Air Temp. °F DB
68
70
TC
PI
TC
PI
28.93
4.65
28.45
4.73
31.98
4.97
31.45
5.06
33.58
5.17
33.03
5.26
35.58
5.41
35.00
5.50
36.89
5.40
36.29
5.49
38.63
5.40
38.00
5.49
39.24
5.22
38.60
5.31
39.85
5.03
39.20
5.12
40.61
4.81
39.95
4.89
41.22
4.63
40.55
4.71
41.83
4.45
41.15
4.52
42.60
4.22
41.90
4.29
42.90
4.13
42.20
4.20
43.29
4.08
42.66
4.14
43.94
3.99
43.44
4.04
44.60
3.91
44.21
3.94
44.99
3.86
44.68
3.88
45.38
3.81
45.15
3.82
72
TC
PI
28.08
4.79
31.03
5.13
32.59
5.33
34.53
5.57
35.80
5.57
37.50
5.56
38.09
5.38
38.68
5.19
39.42
4.96
40.01
4.77
40.60
4.58
41.34
4.35
41.64
4.26
42.16
4.19
43.04
4.08
43.91
3.96
44.43
3.90
44.96
3.83
75
TC
PI
27.05
4.94
29.91
5.28
31.41
5.49
33.28
5.74
34.50
5.74
36.13
5.73
36.70
5.54
37.27
5.35
37.99
5.11
38.56
4.91
39.13
4.72
39.84
4.48
40.13
4.38
40.74
4.30
41.76
4.16
42.79
4.02
43.40
3.94
44.02
3.86
DB: Dry Bulb Temperature (°F) WB: Wet Bulb Temperature (°F) TC: Total Capacity (kBtu/h) PI: Power Input (kW) (includes compressor, indoor fan motor and outdoor fan motor) 1. All capacities are net, evaporator fan motor heat is deducted. 2. Direct interpolation is permissible. Do not extrapolate. 3. Grey shading indicates reference data. When operating at this temperature, these values can be different if the system is not running consistently.
Capacity as rated: 0 ft. above sea level with 24.6 ft. of refrigerant piping. 0 ft. level difference between outdoor and indoor units.
Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60ºF wet bulb (WB), and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).
54 | PERFORMANCE DATA
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PERFORMANCE DATA
Maximum Heating Capacity LC428HV
Maximum Heating Capacity Table for LC428HV (LUU429HV + LCN428HV)
Table 32: LCN428HV / LUU429HV Maximum Heating Capacities.
Outdoor Air Temp.
°F DB
°F WB
-13
-13.4
-4
-4.4
0
-0.4
5
4.5
10
9
17
15
20
19
25
23
30
28
35
32
40
36
45
41
47
43
50
46
55
51
60
56
63
59
68
64
61
TC
PI
39.31
4.68
40.92
5.01
41.76
5.20
42.82
5.44
43.51
5.32
44.42
5.23
45.69
5.13
46.96
5.03
48.55
4.91
49.82
4.81
51.09
4.72
52.67
4.59
53.31
4.55
53.46
4.52
53.73
4.47
53.99
4.42
54.14
4.39
54.30
4.36
64
TC
PI
38.44
4.83
40.00
5.17
40.83
5.37
41.86
5.62
42.53
5.49
43.43
5.40
44.67
5.30
45.91
5.20
47.46
5.07
48.70
4.97
49.94
4.87
51.50
4.75
52.12
4.70
52.39
4.65
52.83
4.58
53.28
4.51
53.55
4.46
53.82
4.42
Indoor Air Temp. °F DB
68
70
TC
PI
TC
PI
37.34
4.99
36.73
5.07
38.86
5.34
38.23
5.43
39.66
5.54
39.01
5.64
40.66
5.80
40.00
5.90
41.32
5.67
40.64
5.77
42.19
5.57
41.50
5.67
43.39
5.47
42.69
5.56
44.60
5.37
43.87
5.46
46.11
5.24
45.35
5.33
47.31
5.13
46.54
5.22
48.52
5.03
47.73
5.12
50.02
4.90
49.21
4.98
50.63
4.85
49.80
4.93
51.09
4.79
50.35
4.86
51.86
4.69
51.26
4.74
52.63
4.59
52.18
4.62
53.09
4.53
52.73
4.55
53.56
4.47
53.28
4.48
72
TC
PI
36.24
5.14
37.72
5.50
38.50
5.71
39.47
5.98
40.10
5.84
40.95
5.75
42.12
5.64
43.29
5.53
44.75
5.40
45.92
5.29
47.09
5.18
48.55
5.05
49.14
5.00
49.76
4.92
50.79
4.78
51.82
4.65
52.44
4.57
53.06
4.49
75
TC
PI
34.92
5.30
36.35
5.67
37.10
5.89
38.03
6.16
38.64
6.02
39.46
5.92
40.59
5.81
41.71
5.70
43.12
5.56
44.25
5.45
45.38
5.34
46.79
5.20
47.35
5.15
48.08
5.05
49.28
4.89
50.49
4.72
51.22
4.63
51.95
4.53
DB: Dry Bulb Temperature (°F) WB: Wet Bulb Temperature (°F) TC: Total Capacity (kBtu/h) PI: Power Input (kW) (includes compressor, indoor fan motor and outdoor fan motor) 1. All capacities are net, evaporator fan motor heat is deducted. 2. Direct interpolation is permissible. Do not extrapolate. 3. Grey shading indicates reference data. When operating at this temperature, these values can be different if the system is not running consistently.
Capacity as rated: 0 ft. above sea level with 24.6 ft. of refrigerant piping. 0 ft. level difference between outdoor and indoor units.
Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60ºF wet bulb (WB), and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).
Performance Data
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PERFORMANCE DATA | 55
EQUIPMENT SELECTION PROCEDURE
Correction Factors
Four-Way Ceiling-Cassette System Engineering Manual
Cooling / Heating Correction Factors
For Four-Way Ceiling Cassette systems, calculate the equivalent length of the liquid line from the outdoor unit to the indoor unit. Also, determine the elevation difference of the indoor unit above or below the outdoor unit. Find corresponding cooling or heating capacity correction factors as shown below. Multiply the correction factors by the cooling or heating capacity obtained from the capacity table using design conditions. The resultant is the NET cooling or heating capacity.
Refrigerant Line Length Derates
For air-cooled systems, a capacity correction factor will have to be applied to account for the length of the system's refrigerant pipe. Rate of change in capacity due to increased piping lengths is shown below.
Table 33: DQG%WXK&DSDFLW\&DVVHWWH6\VWHP&RROLQJDQG+HDWLQJ&DSDFLW\&RHI¿FLHQW)DFWRUV
Piping Length (ft.)
24.6 32.8 49.2 65.6 98.4 131.2 164.0
Cooling Capacity Coefficient Factor
Rate of Capacity LC098HV4 (9,000 Btu/h) 100 99.7 99.2 98.7
-
-
-
Change (%)
LC128HV4 (12,000 Btu/h) 100 99.7 99.2 98.7
-
-
-
Heating Capacity Coefficient Factor
Rate of Capacity LC098HV4 (9,000 Btu/h) 100 99.7 99.2 98.7
-
-
-
Change (%)
LC128HV4 (12,000 Btu/h) 100 99.7 99.2 98.7
-
-
-
196.9
-
-
229.7
-
-
246.0
-
-
Table 34: WR%WXK&DSDFLW\&DVVHWWH6\VWHP&RROLQJDQG+HDWLQJ&DSDFLW\&RHI¿FLHQW)DFWRUV
Piping Length (ft.)
24.6 32.8 49.2 65.6 98.4 131.2 164 196.9 229.7 246
Cooling Capacity Coefficient Factor.
LC188HV4 (18,000 Btu/h) 100 100 99.3 97.9 96.6 93.8 91.1
-
-
-
Rate of Capacity LC248HV (24,000 Btu/h) 100 100 99.3 97.9 96.6 93.8 91.1
-
-
-
Change (%)
LC368HV (36,000 Btu/h) 100 100 99.3 97.9 96.6 93.8 91.1 88.4 85.6 82.9
LC428HV (42,000 Btu/h) 100 100 99.3 97.9 96.6 93.8 91.1 88.4 85.6 82.9
Heating Capacity Coefficient Factor.
LC188HV4 (18,000 Btu/h) 100 99.3 97.9 96.6 9..8 91.1 88.4
-
-
-
Rate of Capacity LC248HV (24,000 Btu/h) 100 99.3 97.9 96.6 9..8 91.1 88.4
-
-
-
Change (%)"
LC368HV (36,000 Btu/h)
100 99.7 99.2 98.7 97.7 96.6 95.6 94.6 93.5 93.0
LC428HV (42,000 Btu/h) 100 99.7 99.2 98.7 97.7 96.6 95.6 94.6 93.5 93.0
Equivalent Piping Length for Piping Components
Table 35: Equivalent Piping Length for Elbows.
Component
Size (Inches)
Elbow (ft.)
1/4 3/8 1/2 5/8 3/4 7/8
1 1-1/8 1-1/4 1-3/8 1-1/2 1-5/8 1-3/4 2-1/8
0.5 0.6 0.7 0.8 1.2 1.3 1.5 1.6 1.8 2.0 2.1 2.3 2.5 2.8
Altitude Correction Factor
The impact of air density must be considered on systems installed at a significant altitude above sea level, therefore, locally accepted altitude correction factors must be applied.
56 | PERFORMANCE DATA
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EQUIPMENT SELECTION PROCEDURE
Performance Data
Defrost Correction Factor for Heating Operation
The outdoor unit heating capacity will need to be adjusted for frost accumulation on air-cooled systems. If design day conditions are below the dewpoint of the surrounding air, frost will not be a problem and no correction factor is needed. In certain weather conditions, however, frost will form and accumulate on the air-cooled outdoor unit coil and impact the coils ability to transfer heat. If significant frost accumulates on the outdoor unit coil, a defrost algorithm will start automatically. The timing between defrost periods is determined by the system's ability to achieve a target head pressure value.
Capacity and AHRI ratings tables do not factor in capacity reduction when frost has accumulated on the condenser coil, nor during defrost operation. Integrated heating capacity values can be obtained using the formula: Table 36: Outdoor Unit Frost Accumulation Factor (Heating)1.
A = B x C
Entering DB (ºF) Derate factor
19.4 23.0 26.6 32.0 37.4 41.0 44.6 0.98 0.95 0.93 0.86 0.93 0.96 1.0
Where:
1At 85% outdoor air relative humidity.
A = Integrated Heating Capacity. B = Value found in the Capacity Table.
The frost accumulation factor does not account for effects of snow accumulation restricting airflow through the outdoor unit coil.
C = Correction Factor for Frost Accumulation Factor (from table at right).
There will be a temporary reduction in capacity when frost / ice accumulates on the outside surface of the outdoor unit heat exchanger. The level of capacity reduction depends on a number of factors, for example, outdoor temperature (°F DB), relative humidity (RH), and the amount of frost present.
Check the Indoor and Outdoor Unit Selection(s)
Compare the corrected cooling and heating capacities to the load calculations. Is each capacity sufficient for the zone it serves? For each indoor unit, the corrected capacity must be at least equal to the total of the cooling design load (plus ventilation load, if applicable) for the space(s) served by the indoor unit. For each indoor unit, the corrected capacity also must be at least equal to the total of the heating design load (plus ventilation load, if applicable) for the space(s) and / or thermal zones served by the indoor unit. The outdoor unit selected must be large enough to offset the total cooling load for all spaces it serves (account for ventilation air cooling load if the ventilation air has not been pretreated to room neutral conditions). The outdoor unit must also be large enough to offset the total heating load for all spaces it serves. If the corrected heating capacity ratio exceeds 100%, reselect the equipment, or change the system design by moving some of the load to another system.
System Sizing Check Formulas
1. Outdoor Unit Rated Capacity. Qodu(rated) (From capacity tables).
2. Outdoor Unit Capacity at Ti, To Temperature. Qodu(Ti, To) (From capacity tables).
3. Outdoor Unit Capacity Coefficient Factor.
F = Q / Q (Ti, To)
odu(Ti, To) odu(rated)
4. Piping Correction Factor (From Capacity Coefficient Factor Tables). F(length) for each piping length
5. Individual Indoor Unit Combination Capacity.
Q = Q x Q / Q idu (combi)
odu(rated)
idu(rated) idu(rated-total)
6. Individual Indoor Unit Actual Capacity.
Q = Q x F x F idu (actual)
odu(combi) (Ti, To) (length, altitude)
Conclusions and Recommendations
· Understand the design safety factors. · Reference load calculations for actual cooling and heating capacities (applies in 99% of applications consider total load when latent load
is greater than 30%). · Verify that the sensible load of the zone is satisfied. · Use caution when sizing to meet listed capacity specifications for the scheduled manufacturer's equipment.
If further system design assistance is needed, or you have a unique application you would like to discuss, contact your LG sales rep.
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PERFORMANCE DATA | 57
APPLICATION GUIDELINES
Placement Considerations on page 59 Installing Outdoor Units Indoors on page 67 Refrigerant Piping Design on page 70
PLACEMENT CONSIDERATIONS
Indoor Unit
Selecting the Best Location for the Indoor Unit
WARNING
7KHXQLWVKRXOGQRWEHLQVWDOOHGZKHUHVXOIXULFDFLGDQGÀDPPDEOHRUFRUURVLYHJDVHVDUHJHQHUDWHGYHQWHGLQWRRUVWRUHG7KHUHLVULVNRI¿UH explosion, and physical injury or death.
Figure 42: Indoor Unit Clearance Requirements.
Do's Select a location for installing the indoor units that will meet the following conditions:
· Place the unit where air circulation will not be blocked.
· Locate the indoor unit in a location that is level, and where it can be easily connected to the outdoor unit.
· Place the unit in a location where condensation drainage can be conveniently routed away.
· Include enough space around the indoor unit so that it is accessible for maintenance and service purposes.
· Place the unit in a location where electrical noise / electromagnetic waves will not impact operation. Maintain proper distances between the indoor units and electric wires, audio and visual appliances, breaker / circuit panels, etc.
· Place in an area that is level and with enough strength to bear the weight of the indoor unit(s).
Ceiling Ceiling Tile
19-11/16 inches
39-3/8 inches H = 6 feet to 12 feet
13/32 inches
11-13/16 inches
Ceiling Tile 19-11/16
inches Floor
11-13/16 inches
Do Not's · No obstacles to air circulation around the unit; keep proper distances from ceilings, doorways, floor, walls, etc. · The unit should not be installed near a heat or steam source, or where considerable amounts of oil, iron powder, or flour are used. · The unit should not be installed where sulfuric acid and flammable or corrosive gases are generated, vented into, or stored. · Avoid installing the unit near high-frequency generators or near any equipment that generates an electromagnetic field (minimum 3-1/3 feet
away).
Figure 43: 2 x 2 Cassette Ceiling Opening Dimensions and Bolt Locations.
23-5/8 (600) (Ceiling Opening) (LCN098-128HV4) 23~26 (585~660) (Ceiling Opening) (LCN188HV4)
20-23/64 (517)
Figure 44: 3 x 3 Cassette Ceiling Opening Dimensions and Bolt Locations.
34-7/16 (875) (Ceiling Opening)
31 (788) (Hanging Bolt)
Application Guidelines
20-19/32 (523)
12-9/16 (319)
22-7/16 (570) 20-23/64 (517) 23-5/8 (600) (Ceiling Opening) (LCN098-128HV4) 23~26 (585~660) (Ceiling Opening) (LCN188HV4)
26-716 (671) 33-1/16 (840) Unit size 26-15/16 (684) (Hanging Bolt) 34-7/16 (875) (Ceiling Opening)
22-7/16 (570)
33-1/16 (840) Unit Size
Unit: Inch (mm)
18-5/32 (461)
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Unit: Inch (mm)
APPLICATION | 59
Four-Way Ceiling-Cassette System Engineering Manual
PLACEMENT CONSIDERATIONS
Indoor Unit
· Indoor units (IDUs) should not be placed in an environment where the IDUs will be exposed to harmful volatile organic compounds (VOCs) or in environments where there is improper air make up or supply or inadequate ventilation. If there are concerns about VOCs in the environment where the IDUs are installed, proper air make up or supply and / or adequate ventilation should be provided. Additionally, in buildings where IDUs will be exposed to VOCs consider a factory-applied epoxy coating to the fan coils for each IDU. · If the unit is installed near a body of water, certain components are at risk of being corroded. Appropriate anti-corrosion methods should be taken for the unit and all components.
The unit will be damaged, will malfunction, and / or will not operate as designed if installed in any of the conditions listed.
Installing in a High or Dropped Ceiling High or dropped ceilings, often found in commercial buildings and offices, will cause a wide temperature differentiation. To countermeasure:
· Change the indoor unit mode selection to allow for higher ceilings (see table). · Install an air circulator. · Set the air discharge outlet so that heated air flows in a downward direction. · Use a dual door system to protect the building gate or exit.
Table 37: Indoor Unit High Ceiling Mode Selection Options (LCN098HV4, LCN128HV4, LCN188HV4).
Ceiling Height
Mode Selection
IHHW
Low Ceiling
7-1/2 feet to 8-7/8 feet
Standard
8-7/8 feet to 10-3/16 feet
High Ceiling
10-3/16 feet to 11-13/16 feet
Very High Ceiling
Table 38: Indoor Unit High Ceiling Mode Selection Options (LCN248HV, LCN368HV, LCN428HV).
Ceiling Height
Mode Selection
IHHW
Low Ceiling
8-7/8 feet to 10-1/2 feet
Standard
10-1/2 feet to 11-13/16 feet
High Ceiling
11-13/16 feet to 13-13/16 feet
Very High Ceiling
Installing in an Area Exposed to Unconditioned Air In some installation applications, areas (floors, walls) in some rooms will be exposed to unconditioned air (room will be above or next to an unheated garage or storeroom). To countermeasure:
· Verify that carpet is or will be installed (carpet will increase the temperature by three degrees). · Add insulation between the floor joists. · Install radiant heat or another type of heating system to the floor.
Installing in an Area with High Humidity Levels If the environment is prone to humidity levels of 80% or more (near the ocean, lakes, etc.) or where steam could collect in the plenum:
· Install additional insulation to the indoor unit (glass wool insulation >13/32 inches thick). · Install additional insulation to the refrigerant piping (insulation >13/16 inches thick). · Seal all gaps between the indoor unit and the ceiling tiles (make the area air tight) so that humidity does not transfer from the plenum to the
conditioned space. Also, add a ceiling grille for ventilation.
60 | APPLICATION
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PLACEMENT CONSIDERATIONS
Outdoor Unit
Application Guidelines
Selecting the Best Location for the Outdoor Unit
DANGER
· Do not install the unit in an area where combustible gas will generate, flow, stagnate, or leak. These conditions can cause a fire, resulting in bodily injury or death. · Do not install the unit in a location where acidic solution and spray (sulfur) are often used as it can cause bodily injury or death. · Do not use the unit in environments where oil, steam, or sulfuric gas are present as it can cause bodily injury or death.
When deciding on a location to place the outdoor unit, be sure to choose an area where run-off from defrost will not accumulate and freeze on sidewalks or driveways, which will create unsafe conditions. Properly install and insulate any drain hoses to prevent the hose from freezing, cracking, leaking, and causing unsafe conditions from frozen condensate.
Install a fence to prevent vermin from crawling into the unit or unauthorized individuals from accessing it. Vermin and unauthorized individuals will FDXVHD¿UHHOHFWULFVKRFNSK\VLFDOLQMXU\RUGHDWK)ROORZWKHSODFHPHQWJXLGHOLQHVVHWIRUWKLQ³&OHDUDQFH5HTXLUHPHQWV´
Install a fence to prevent vermin from crawling into the unit or unauthorized individuals from accessing it. Vermin and unauthorized individuals will GDPDJHWKHXQLW)ROORZWKHSODFHPHQWJXLGHOLQHVVHWIRUWKLQ³&OHDUDQFH5HTXLUHPHQWV´ Select a location for installing the outdoor unit that will meet the following conditions:
· Where there is enough strength to bear the weight of the unit. · A location that allows for optimum air flow and is easily accessible for inspection, maintenance, and service. · Where piping between the outdoor unit and indoor unit is within allowable limits. · Include space for drainage to ensure condensate flows properly out of the unit when it is in heating mode. Avoid placing the outdoor
unit in a low-lying area where water could accumulate. · If the outdoor unit is installed in a highly humid environment (near an ocean, lake, etc.), ensure that the site is well-ventilated and has a lot
of natural light (Example: Install on a rooftop).
Do Not's
· Where it will be subjected to direct thermal radiation from other heat sources, or an area that would expose the outdoor unit to heat or steam like discharge from boiler stacks, chimneys, steam relief ports, other air conditioning units, kitchen vents, plumbing vents, and other sources of extreme temperatures.
· Where high-frequency electrical noise / electromagnetic waves will affect operation.
· Where operating sound from the unit will disturb inhabitants of surrounding buildings.
· Where the unit will be exposed to direct, strong winds.
· Where the discharge of one outdoor unit will blow into the inlet side of an adjacent unit (when installing multiple outdoor units).
Outdoor Unit Condensate Drain Piping
Outdoor unit requires condensate drain piping. Condensate drain pipe is constructed with materials approved by local code. See pages 64-66 for information in reference to outdoor unit placement.
Planning for Snow and Ice
To ensure the outdoor unit operates properly, certain measures are required in locations where there is a possibility of heavy snowfall or severe windchill or cold:
1. Prepare for severe winter wind chills and heavy snowfall, even in areas of the country where these are unusual phenomena. 2. Position the outdoor unit so that its airflow fans are not buried by direct, heavy snowfall. If snow piles up and blocks the airflow, the
system will malfunction. 3. Remove any snow that has accumulated four (4) inches or more on the top of the outdoor unit. 4. In climates that will experience significant snow buildup, mount the outdoor unit on a raised, field-provided platform or stand. The raised
support platform must be high enough to allow the unit to remain above possible snow drifts, and must be higher than the maximum anticipated snowfall for the location. 5. Design the mounting base to prevent snow accumulation on the platform in front or back of the unit frame. 6. Provide a field fabricated snow protection hood to keep snow and ice and/or drifting snow from accumulating on the coil surfaces. 7. To prevent snow and heavy rain from entering the outdoor unit, install the condenser air inlets and outlets facing away from direct winds. 8. Consider tie-down requirements in case of high winds or where required by local codes.
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APPLICATION | 61
PLACEMENT CONSIDERATIONS
Outdoor Unit
Four-Way Ceiling-Cassette System Engineering Manual
Planning for Snow and Ice, continued.
When deciding on a location to place the outdoor unit, be sure to choose an area where run-off from defrost will not accumulate and freeze on sidewalks or driveways, which will create unsafe conditions. Properly install and insulate any drain hoses to prevent the hose from freezing, cracking, leaking, and causing unsafe conditions from frozen condensate.
Underground Refrigerant Piping
Refrigerant pipe installed underground must be routed inside a vapor tight protective sleeve to prevent insulation deterioration and water infiltration. Refrigerant pipe installed inside underground casing must be continuous without any joints. Underground refrigerant pipe must be located at a level below the frost line.
Figure 45: Typical Arrangement of Single Zone Refrigerant Pipe and Cable(s) in a Utility Conduit.
Vapor Line Insulation Material
Liquid Line
Table 39: Utility Conduit Sizes (Inches).
Liquid Pipe1
Vapor Pipe1 3/8 (2.02,5) 1/2 (2.02,5) 5/8 (2-1/82,5) 3/4 (2-1/42,5)
1/4 (1.0)3
4
4
4
4
3/8 (1-1/8)3
4
4
4
5
1/2 (1-1/2)4
5
5
5
5
5/8 (1-5/8)4
5
5
5
5
3/4 (1-3/4)4
5
5
5
5
1OD pipe diameter in inches; Values in parenthesis () indicate OD of pipe with insulation jacket.
2Diameter of pipe with insulation. Thickness of pipe insulation is typical. Actual required thickness will vary based on surrounding ambient conditions and must be calculated and specified by the design engineer.
3Insulation thickness (value in parenthesis) = 3/8 inch.
4Insulation thickness (value in parenthesis) = 1 inch.
5Insulation thickness (value in parenthesis) = 3/4 inch.
Tie-Downs and Lightning Protection
Tie-Downs
· The strength of the roof must be checked before installing the outdoor units.
· If the installation site is prone to high winds or earthquakes, when installing on the wall or roof, securely anchor the mounting base using a field-provided tie-down configuration approved by a local professional engineer.
· The overall tie-down configuration must be approved by a local professional engineer.
Pipe Sleeve Insulation Material Min. 14 Gauge Power/Communication Cable
Table 40: Outdoor Unit Refrigerant Pipe Connections.
Model
Liquid Conn. (inches)
LC098HV4, LC128HV4
1/4
LC188HV4
1/4
LC248HV, LC368HV, LC428HV
3/8
Vapor Conn. (inches) 3/8 1/2 5/8
Figure 46: Lightning Protection Diagram.
Lightning rod
Lightning rod 3URWHFWLRQ$QJOHÛaÛ
5 feet
Always refer to local code when using a wind restraint system.
Lightning Protection
· To protect the outdoor unit from lightning, it must be placed within the specified lightning safety zone.
Table 41: 6DIHW\=RQH6SHFL¿FDWLRQV
Building Height (feet)
66
98
148 197
3URWHFWLRQ$QJOHÛ
55
45
35
25
Ground
· Power cable and communication cable must be installed five (5) feet away from lightning rod.
· A high-resistance ground system must be included to protect against induced lightning or indirect strike.
Safe zone
If the building does not include lightning protection, the outdoor unit will be damaged from a lightning strike. Inform the customer of this possibility in advance.
62 | APPLICATION
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PLACEMENT CONSIDERATIONS
Outdoor Unit
Oceanside Applications
Use of a Windbreak to Shield from Sea Wind
Ocean winds will cause corrosion, particularly on the condenser and HYDSRUDWRU¿QVZKLFKLQWXUQFRXOGFDXVHSURGXFWPDOIXQFWLRQRU LQHI¿FLHQWSHUIRUPDQFH
· Avoid installing the outdoor unit where it would be directly exposed to ocean winds.
· Install the outdoor unit on the side of the building opposite from direct ocean winds.
· Select a location with good drainage. · Periodically clean dust or salt particles off of the heat exchanger
with water. · If the outdoor unit must be placed in a location where it would
be subjected to direct ocean winds, install a concrete windbreak strong enough to block any winds. · Windbreak must be more than 150% of the outdoor unit's height. There must be 2 to 3-1/2 inches of clearance between the outdoor unit and the windbreaker for purposes of air flow.
Use of a Building to Shield from Sea Wind If a windbreak is not possible, a building or larger structure must be used to shield the outdoor unit from direct exposure to the sea wind. The unit must be placed on the side of the building directly opposite to the direction of the wind as shown in the figure at right.
Figure 47: Oceanside Placement Using Windbreak.
Windbreak
Sea wind
Additional anti-corrosion treatment will need to be applied to the outdoor unit at oceanside locations. Figure 48: Placement Using Building as Shield.
Building Sea wind
Building Sea wind
Application Guidelines
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APPLICATION | 63
PLACEMENT CONSIDERATIONS
Outdoor Unit
Four-Way Ceiling-Cassette System Engineering Manual
Minimum Allowable Clearance and Service Access Requirements
Proper clearance for the outdoor unit coil is critical for proper unit operation. When installing the outdoor unit, consider service, inlet and outlet and minimum allowable space requirements as illustrated in the diagrams on the following pages.
· Include enough space for airflow and for service access. If installing multiple outdoor units, avoid placing the units where the discharge of one unit will blow into the inlet side of an adjacent unit.
· If an awning is built over the unit to prevent direct sunlight or rain exposure, make sure that the discharge air of the outdoor unit isn't restricted.
· No obstacles to air circulation around the unit; keep proper distances from ceilings, fences, floor, walls, etc. (Install a fence to prevent pests from damaging the unit or unauthorized individuals from accessing it.)
Outdoor Unit (9,000 to 24,000 Capacity) Service Access and Allowable Clearances Specific clearance requirements in the diagram below are for (9,000 to 24,000 Btu/h capacities). The figure below shows the overall minimum clearances that must be observed for safe operation and adequate airflow around the outdoor unit. When placing the outdoor unit under an overhang, awning, sunroof or other "roof-like structure", observe the clearance requirements (as shown in Cases 1 and 2) for height in relation to the unit. To have successful service access to the outdoor unit, see the figure below for minimum spacing. When installing multiple outdoor units, see Cases 4 and 5 for correct spacing requirements.
If the outdoor unit is installed between standard and minimum clearances, capacity decreases approximately 10%.
Figure 49: 9,000 to 24,000 Capacity Outdoor Unit Service Access and Allowable Clearances Diagram.
Case 1
20 inches or less
G
Case 2
1/2106iinncchhes or less
Case 3
G
A D
B C
D C
Case 4
Case 5 D
Do not place the unit where animals and/or plants will be in the path of the warm air, or where the warm air and/or noise will disturb neighbors.
F E
B
B
D
Table 42: 9,000 to 24,000 Outdoor Unit Service Access and Allowable Clearances Diagram Legend.
Unit: Inch
A
B
C
D
E
F
G
Case 1
Standard Minimum
12 4
24 10
-
12 4
-
-
-
-
40
Case 2
Standard Minimum
-
-
20
-
-
14
-
-
-
-
-
40
Case 3
Standard Minimum
-
-
20
12
-
-
14
4
-
-
-
Case 4
Standard Minimum
-
-
-
12
24
-
-
-
4
8
79
-
Case 5
Standard Minimum
-
24 10
-
12 4
-
-
-
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PLACEMENT CONSIDERATIONS
Outdoor Unit
Outdoor Unit (36,000 and 42,000 Btu/h Capacity) Service Access and Allowable Clearances When installing the outdoor unit, consider service, inlet, and outlet, and minimum allowable space requirements as illustrated in the following diagrams.
Minimum 11-13/16
Minimum 11-13/16 Minimum 11-13/16
Sunroof
Strong wind
Strong wind
oFbesntacceleosr
Minimum 11-13/16
Minimum 27-9/16
Minimum 23-5/8
Air inlet grille
Blown air
Minimum 19-1/16
Unit: Inch
Ensure that the space at the back of the outdoor unit is a minimum of 11-13/16 inches, and include a minimum of 23-5/8 inches at the right side of the unit for service.
If the outdoor unit discharge side faces a wall, include a minimum of 19-11/16 inches between the outdoor unit and the wall. Install the outdoor unit so that the discharge port is set at a right angle to the wind direction.
Clearance Requirements when Different Obstacles are Present (Unit: Inch).
Obstacle on the suction side only. Obstacles on the suction side and on both left and right sides.
Application Guidelines
Minimum 11-13/16"
Minimum 11-13/16"
Minimum 23-19/32"
Minimum 11-13/16"
Obstacles above and on the air intake side. Obstacles above, on the air intake side, and on both left and right sides
Minimum 19-11/16"
Maximum 19-11/16"
Minimum 39-3/8" Minimum 39-3/8"
Minimum 11-13/16"
Minimum 11-13/16"
Minimum 23-19/32"
Minimum 11-13/16"
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APPLICATION | 65
PLACEMENT CONSIDERATIONS
Outdoor Unit
Obstacle just on the air discharge side.
Obstacles above and on the air discharge side.
Minimum 19-11/16"
Where there are obstacles on both suction and discharge sides (discharge side obstacle is higher than the outdoor unit).
Minimum 39-3/8"
Four-Way Ceiling-Cassette System Engineering Manual
Minimum 19-11/16"
Minimum 19-11/16"
Where there are obstacles above, and on both
suction and discharge sides (discharge side obstacle
is higher than the outdoor unit).
Maximum 19-11/16"
Table 43: Ratio among H, A, and L.
L
A
/+
/+ 1/2 H < L
29-1/32 inches 39-3/8 inches
H < L
6HW6WDQGDV/+
Minimum 39-3/8"
If a stand is necessary, it should be contained (not open frame) to prevent the discharge air from short cycling.
Minimum 19-11/16"
Minimum 11-13/16"
Where there are obstacles on both suction and discharge sides (discharge side obstacle is lower than the outdoor unit).
L
H
Minimum 11-13/16"
A
Minimum 19-11/16" Minimum 11-13/16"
Where there are obstacles above, and on both suction and discharge sides (discharge side obstacle is lower than the outdoor unit).
Series installation
Maximum 19-11/16"
L
Minimum 39-3/8"
66 | APPLICATION
Minimum 39-3/8"
³/´VKRXOGEHORZHUWKDQ ³+´,IDVWDQGLVQHFHVsary, it should be contained (not open frame) to prevent the discharge air from short cycling.
H
Minimum 11-13/16"
Minimum 78-3/4" Minimum 23-19/32" Minimum 39-3/8"
Minimum 11-13/16"
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Application Guidelines
PLACEMENT CONSIDERATIONS
Installing Outdoor Units Indoors
Installing Outdoor Units Indoors
Single Zone Cassette outdoor units are engineered to be mounted outdoors and include technology designed to minimize the negative effects of winter weather's freezing rain, sleet, and snow. Some building projects, however, necessitate placing the HVAC outdoor units indoors: · Lack of ground space. · Lack of an appropriate outdoor location that meets system design requirements. · When mounting on the roof is not an option due to a lack of roof space. · Roof warranty will be voided if mechanical equipment is placed on the membrane. · On retrofit projects, a former chiller / boiler / air handler equipment room, mechanical area, or penthouse already exists. · To curtail the potential need for redundant zone heating devices such as wall-fin radiators or duct heaters. · In extremely cold environments where there is a significant amount of run-time at temperatures well below freezing outside the outdoor unit
ambient air temperature range published in this engineering manual.
Benefits of Installing Outdoor Units Indoors · Shelters the outdoor unit from direct exposure to prevailing winds that decrease the heating capability of the outdoor unit. · Protects equipment from freezing precipitation and / or potential ice build-up that could hinder unit operation. · Maintains coil heat transfer efficiency by reducing the number of and shortening the cycle time for defrost operation. · Easier maintenance and servicing during inclement weather. · When mounted in a fully enclosed space, limiting the ambient air temperature will allow the Single Zone Cassette system designer to elimi-
nate oversizing. · The outdoor unit to compensate for loss of capacity at low ambient temperatures. · Will also curtail the need to provide inefficient redundant zone heating devices such as wall-fin radiators and second-stage ancillary heating
devices.
Design Considerations Include: · Enclosure types and elements such as louvers (see next page), rain hoods, dampers and controls, heating methods and sizing of heating
devices. · Heating strategies. · Duct design. · Condensate handling.
General Guidelines · Follow ASHRAE 62.1 design guidelines. · Depending on the project / application, a roof over the outdoor units in combination with a wind break will be all that is necessary. · Consider the potential for snow accumulation near louvers / roof openings. Outside air intakes and discharge ducts/louvers must be engi-
neered to clear anticipated snow accumulation levels by at least one (1) foot. · In situations where operation is anticipated at temperatures lower than the product's minimum operating temperature, ancillary heat must
be provided to heat the outdoor unit coils to ensure continuous compressor operation and heating.
It will be necessary to use a field-fabricated air guide to prevent discharge air from short-cycling back to the coil inlet. · Consider the direction of prevailing winds and opening placement. If possible, locate inlet openings upwind of discharge openings and other
exhaust outlets. · When inlet and outlet openings are placed on the same wall, minimum distance between the two openings must be approximately three (3)
feet (minimum distance varies significantly with variations in outlet opening face velocity). · If roof-mounted ventilation openings are used, strategically locate the inlet ventilation opening(s) upwind of the outlet opening(s). · Discharge and supply ductwork must be designed to avoid weather related long periods of water entrainment and the potential for microbial
growth.
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APPLICATION | 67
PLACEMENT CONSIDERATIONS
Installing Outdoor Units Indoors
Four-Way Ceiling-Cassette System Engineering Manual
Provide a means to drain the condensate generated during heating mode and defrost cycle in addition to rainwater that infiltrates the inlet louver enclosed area. · Install a field-provided drain pan under the outdoor units and provide a path to a nearby floor drain. · If the ambient air temperature is expected to drop below 32°F in the enclosure, heat the bottom surface of the pan, drain line, and floor
drain so that the condensate does not freeze before reaching the drain.
CAUTION
When deciding on a location to place the outdoor unit, be sure to choose an area where run-off from defrost will not accumulate and freeze on sidewalks or driveways which will create unsafe conditions.
Allow for ventilation intake and exhaust air based on maximum outdoor unit fan capacity. · Select the size, type and orientation of architectural louvers with adequate "net free area" face velocity to ensure the total external static
pressure from the outdoor unit fan does not exceed design limitations (see specification data tables). · No obstructions must be placed in front of the louver that could hamper the free flow (throw) of air. · Roof top openings and / or discharge and supply louvers must be equipped with screens to prevent bird and insect infiltration.
For louver recommendations, see below and on the next page.
As always, the best solution for each project balances acceptable heating performance (considering local weather conditions), capital costs, life cycle energy consumption, and limitations set forth by local building codes.
Louver Recommendations for Outdoor Unit Enclosure
1. Outdoor Unit Enclosure: Manual Door Open Type. 2. Louver Angle: No More Than 15° Horizontally. 3. Space Between Louvers: More than 4 inches (Recommend). 4. Louver Shape: Wing or Plane Type.
Figure 50: Louver Recommendations.
Maximum 15° (Recommended)
· Open Rate and Inlet must be taken into consideration when designing the louvered outdoor unit enclosure.
· 'RQRWXVH³6´W\SHORXYHUV
More than 4 in. Louver (Recommended)
Figure 51: Using "S" Type Louvers. Outside
If the Louver Open Rate is Too Small 1. Noise can occur because of the increased air velocity passing
through the louver blade.
2. Noise can occur from louver blade vibrations.
3. A drop in outdoor unit fan performance (excess static pressure can cause a drop in outdoor unit performance and heat exchanger efficiency).
4. If the louver open rate is too small or there is insufficient air flow exchange, the air conditioner might stop operating.
Air flow passing through the louver blade backwards can generate noise.
Inside
68 | APPLICATION
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PLACEMENT CONSIDERATIONS
Installing Outdoor Units Indoors
Open Rate by Louver Radian Figure 52: Open Rate by Louver Radian Formula.
W
Application Guidelines
h ho
H
ho = h * COS Total Area (A) = H * W Number of Open Spaces (N) = (Number of Louvers - 1) Effective Area (Af) = ho * W * N Louver Open Rate (n) = Af / A
Af = A * n
Effective Cross Section Area
Side View
Front View
Confirming Air Flow Rate / Total Opening Rate · Example: LSU180HSV5.
· Discharge Airflow Rate: 2,119 ft.3/min.
· Velocity of Outlet Air: 16.4 ft./s
Figure 53: Example of Installing Outdoor Unit Indoors.
Louver Dimensions
Air Guide Duct on Outdoor Unit
55-1/8 47-1/4
· Velocity of Inlet Air: 8.2 ft./s
· Open Rate = 80% or More
Open Rate = Effective Face Area (Af) Total Face Area (A)
· Inlet airflow must match or exceed discharge airflow.
· Separate inlet airflow from discharge airflow to prevent recirculation.
Unit: Inch
Formula · Total Louver Dimension (Excluding Frame) (A) = 3.9 feet x 6.2 feet = 24.2 ft.2 · Area Blocked by Outdoor Unit (Discharge) (B) = 2.6 feet x 2.8 feet = 7.41 ft.2 · Inlet Louver Dimension (A - B) = 16.8 ft.2 · Equivalent Inlet Dimension (Open Rate 80%) = 16.8 ft.2 x 0.8 = 13.44 ft.2 · Equivalent Inlet Airflow = 13.44 ft.2 x 8.2 ft./s x 60 sec./min. = 6,612 ft.3/min. · Equivalent Inlet Airflow / Discharge Airflow = 6,612 ft.3/min. / 2,119 ft.3/min. = 312% (Within Allowable Limits)
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74-13/16 31-1/2
Outdoor Unit Dimensions
34-1/4
APPLICATION | 69
REFRIGERANT PIPING DESIGN
Four-Way Ceiling-Cassette System Engineering Manual
49
Device Connection Limitations
A single-zone system consists of one outdoor unit and one indoor unit. One of the most critical elements of a single-zone system is the refrigerant piping. If the connection piping is not within allowable limits, there will be reliability, performance, noise, and vibration issues. The table below lists pipe length limits that must be followed in the design of a Single Zone Four-Way Ceiling-Cassette refrigerant pipe system. See paragraph below for calculating additional refrigerant charge necessary for longer piping lengths. Refer to the figures for maximum length and elevation of piping.
Table 44: Single-Zone Four-Way Ceiling Cassette Refrigerant Piping System Limitations.
System Model Name
Pipe Sizes
Vapor Liquid
Standard length (no add'l refrigerant)
Pipe Length (ELF = Equivalent Length of Pipe)
Longest total equivalent piping length
Shortest total equivalent piping length
Distance between fittings and indoor or outdoor units
Elevation
If outdoor unit is above indoor unit
(All Elevation Limitations are Measured in Actual Feet)
If outdoor unit is below indoor unit
Additional Refrigerant Needed (oz/ft)
LC098HV4, LC128HV4 3/8 1/4
24.6 feet 66 feet
6.6
LQFKHV
49 feet
49 feet
0.22
LC188HV4, LC248HV 5/8 3/8
24.6 feet 164 feet
6.6
LQFKHV
98.4 feet
98.4 feet
0.43
LC368HV, LC428HV 5/8 3/8
24.6 feet 246 feet
6.6
LQFKHV
98.4 feet
98.4 feet
0.43
Figure 54: Typical LC098HV4 and LC128HV4 System Layout.
Indoor unit
Max Length = A Max Elevation = B
Unit = Feet
Outdoor unit
Figure 55: Typical LC188HV4 and LC248HV System Layout.
Max Length = A
Unit = Feet
Indoor unit
Max Elevation = B
Outdoor unit
66
66
A
164
164
A
A
A
98
98
49
B
B
B
B
Indoor unit
Indoor unit
Outdoor unit
Outdoor unit
Additional Refrigerant Charge
Each outdoor unit is factory charged (nameplate charge) for the evaporator as well as a standard 24.6 foot line. Any time a line set is used longer then the standard 24.6 foot line set length, the refrigerant charge has to be adjusted.
The charge must be adjusted on 0.22 oz. or 0.43 oz. of R410A per foot based on how many feet of piping are added. The factory charge accommodates pipe lengths up to the standard length without requiring refrigerant removal.
Figure 56: Typical LC348HV4 and LC428HV System Layout.
Max Length = A
Unit = Feet
Indoor unit
Max Elevation = B
Outdoor unit
246
246
A
A
98
B
B
98
If the unit charge is unknown, reclaim, evacuate and weigh in the correct charge using the unit nameplate (capacity) charge adjusting for line sets longer than 24.6 ft. This will prevent any interruptions to the functioning of the unit and possible damage.
Example: A 50 ft line set is used -- 9 additional feet x 0.22 oz per ft = Add 1.98 oz. of R410A.
Indoor unit Outdoor unit
70 | APPLICATION
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20001747
ISO 9001: 2008
LG ELECTRONICS INC.
LG Electronics, U.S.A., Inc. Air Conditioning Technologies 4300 North Point Parkway Alpharetta, Georgia 30022 www.lghvac.com
EM_SZ_Cassette_06_21 Supersedes: EM_SZ_Cassette_05_21
EM_SZ_Cassette_04_21 EM_SZ_Cassette_10_20 EM_SZ_Cassette_09_20 EM_SZ_Cassette_09_19 EM_SZ_Cassette_2_19 EM_SZ_Cassette_12_18 EM_SZ_Cassette_11_18 EM_SZ_Cassette_8_17 EM_SZ_Cassette_7_16 DFS-EM-AC-001-US_014D02