LGM/LCM092U-150U Gas and Cooling Packaged Units Installation Instructions

installation guide for LENNOX models including: R-454B, R-454B Gas and Cooling Packaged Units, Gas and Cooling Packaged Units, Cooling Packaged Units, Packaged Units, Units

INSTALLATION INSTRUCTIONS

28 янв. 2025 г. — To prevent serious injury or death: 1- Lock-out. tag-out before performing maintenance. 2- If system power is required (e.g., smoke detector.

[PDF] INSTALLATION INSTRUCTIONS - Lennox

5 = EBM Direct Drive 500mm blower with Modbus control. FIGURE 45. Page 59. Page 59. [6] IAQ Options.

File Info : application/pdf, 61 Pages, 5.95MB

508464-01

IMPORTANT
Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and ser vice must be performed by a licensed professional HVAC installer or equivalent, service agency, or the gas supplier

Table of Contents

Dimensions

Parts Arrangement

Shipping and Packing List

General

Requirements

Unit Support

Duct Connection

Rigging Unit for Lifting

Condensate Drains

Connect Gas Piping (Gas Units)

Pressure Test Gas Piping (Gas Units)

High Altitude Derate

Electrical Connections - Power Supply

Electrical Connections - Control Wiring

Mobile Service App

Blower Operation

Direct Drive Blower Start-Up

Refrigerant Leak Detection System

Cooling Start-Up

Prognostic & Diagnostic Sensors

RDS Sensors

Gas Heat Start-Up (Gas Units)

Heating Operation and Adjustments

INSTALLATION INSTRUCTIONS

LGM/LCM092U (7.5 TON)

LGM/LCM102U (8.5 TON)

LGM/LCM120U (10 TON)

LGM/LCM150U (12.5 TON)

GAS AND COOLING PACKAGED UNITS

508464-01 6/2024

R-454B

Electric Heat Start-Up (Cooling Units)

Cooling Operation

Modulating Hot Gas Reheat Start-Up and Operation 40

Preventative Maintenance / Repair

Field-Installed Accessories

Factory Unit Controller Settings

Decommissioning

WARNING
To prevent serious injury or death:
1- Lock-out. tag-out before performing maintenance.
2- If system power is required (e.g., smoke detector maintenance), disable power to blower, remove fan belt where applicable, and ensure all controllers and thermostats are set to the OFF position before performing maintenance.
3- Always keep hands, hair clothing, jewelery, tools, etc., away from moving parts.

RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCES

CAUTION
As with any mechanical equipment, contact with sharp sheet metal edges can result in personal in jury. Take care while handling this equipment and wear gloves and protective clothing.
WARNING
Only manufacturer approved auxiliary devices are permitted to be installed in this unit.
WARNING
If this appliance is conditioning a space with an area smaller than TAmin or stored in a space with an area smaller than Amin as defined by this instruction, then that space must be without continuously operating open flames (e.g. an operating gas appliance) or other potential ignition sources (e.g. an operating electric heater or similar hot surface). A flame-producing device may be installed in the same space if the device is provided with an effective flame arrest system.
CAUTION
Auxiliary devices which may be a potential ignition source shall not be installed in the duct work. Examples of such potential ignition sources are hot surfaces with a temperature exceeding 700°C and electric switching devices.
CAUTION
The appliance is not to be used by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction
CAUTION
Children should be supervised not to play with the appliance.
CAUTION
Any personnel installing, decommissioning, or performaing maintenance on the unit must be properly trained with A2L refrigerants.
CAUTION
Servicing shall be performed only as recommended by the manufacturer.

WARNING
·This appliance must be installed in accordance with local and national wiring regulations. ·If the appliance is not fitted with an option for full disconnection from power, a means of disconnection must be incorporated in the fixed wiring in accordance with national and local wiring regulations.
CAUTION
Leak Detection System installed. Unit must be powered except for service.
WARNING
·Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. ·The appliance shall be stored in a room without continuously operating ignition sources (for example: open flames, an operating gas appliance, or an operating electric heater). ·Do not pierce or burn. ·Be aware that refrigerants may not contain an odor
WARNING
Ducts connected to an appliance shall not contain a potential ignition source.
IMPORTANT
Pipe work, including piping material, pipe routing, and installation shall include protection from physical damage in operation and service, and be in compliance with national and local codes and standards, such as ASHRAE 15, ASHRAE 15.2, IAPMO Uniform Mechanical Code, ICC International Mechanical Code, or CSA B52. All field joints shall be accessible for inspection prior to being covered or enclosed.
IMPORTANT
Refrigerant sensors for refrigerant detection systems shall only be replaced with sensors specified by the appliance manufacture.
CAUTION
This unit is equipped with electrically powered safety measures. To be effective, the unit must be electrically powered at all times after installation, other than when servicing.

Page 2

A2L Refrigerant Considerations
Ensure that the work area is adequately ventilated before breaking into the system or conducting any hot work. A degree of ventilation shall continue during the period that the work is carried out. The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects, taking into account the effects of aging or continual vibration from sources such as compressors or fans.
Under no circumstances shall potential sources of ignition be used when searching for or detection of refrigerant leaks. A halide torch (or any other detector using a naked flame) shall not be used. Electronic leak detectors may be used to detect refrigerant leaks but, in the case of flammable refrigerants, the sensitivity may not be adequate, or may need re-calibration. (Detection equipment shall be calibrated in a refrigerant-free area.) Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used. Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant employed, and the appropriate percentage of gas (25% maximum) is confirmed. Leak detection fluids are also suitable for use with most refrigerants but the use of detergents containing chlorine shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work. If a leak is suspected, all naked flames shall be removed/extinguished. If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system,

or isolated (by means of shut off valves) in a part of the system remote from the leak.
When breaking into the refrigerant circuit to make repairs or for any other purpose conventional procedures shall be used. However, for flammable refrigerants it is important that best practices be followed since flammability is a consideration. The following procedure shall be adhered to:
-Safely remove refrigerant following local and national regulations.
-Evacuate the circuit.
-Purge the circuit with inert gas.
-Evacuate.
-Purge the circuit with inert gas.
-Open the circuit
The refrigerant charge shall be recovered into the correct recovery cylinders if venting is not allowed by local and national codes. For appliances containing flammable refrigerants, the system shall be purged with oxygenfree nitrogen to render the appliance safe for flammable refrigerants. This process might need to be repeated several times. Compressed air or oxygen shall not be used for purging refrigerant systems. Refrigerants purging shall be achieved by breaking the vacuum in the system with oxygen-free nitrogen and continuing to fill until the working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum. This process shall be vented down to atmospheric pressure to enable work to take place. Ensure that the outlet for the vacuum pump is not close to any potential ignition sources and that ventilation is available.

Page 3

LGM/LCM092, 102, 120, 150 DIMENSIONS in. - Gas heat section shown

6-1/8 (156)
AA

5-5/8 (143) BOTTOM SUPPLY
AIR OPENING
BB

58-1/8 (1476)

6-1/8 (156)
60-1/8 (1527) BASE
BOTTOM POWER ENTRY 5-1/2 (140) Dia.

24 (610)
27 (686)

10-3/4

(273) 20 (711)

(508)

CENTER OF GRAVITY

BOTTOM RETURN AIR OPENING

EE FF

7 (178)

6-5/8 (168)

BOTTOM

7 (178)

CONDENSATE

34-7/8 (886)

101-1/4 BASE (2572)

TOP VIEW

OPTIONAL DISCONNECT (FACTORY INSTALLED)

99-1/4 (2521)

60-1/8 (1527)
END VIEW

46-7/8 (1191) 43-3/8 (1102)
3-1/2 (89)

1 (25) ELECTRIC INLETS
15-1/2 (394)

CONDENSATE DRAIN (FRONT)

GAS SUPPLY INLET

5-3/8 (137)

18-1/2 (470)

FLUE OUTLET

46-7/8 (1191)

34-7/8 (886)
39-7/8 (1013)

FORKLIFT SLOTS (BOTH SIDES) LIFTING HOLES (FOR RIGGING)

101-1/4 (2572)
SIDE VIEW

15-1/2 (394)

1-5/8 (41)

HORIZONTAL SUPPLY AIR
OPENING

HORIZONTAL RETURN AIR
OPENING

30 (762)

12-1/8 (308)

CONDENSATE

6-1/8

DRAIN (BACK)

5-3/8

(156)

(137)

31-1/2 (800)
66-3/8 (1686)

30 (762)

Important - Do not install horizontal economizers on this opening. Refer to

SIDE VIEW (Horizontal Openings)

economizer instructions for proper installation.

Page 4

LGM092, 102, 120, 150 PARTS ARRANGEMENT

FILTERS (FOUR - 25 X 25 X 2")

REHEAT COIL (OPTIONAL)
EVAPORATOR COIL

BLOWER (DIRECT DRIVE)

COMPRESSOR INVERTER (BEHIND THE HINGED PANEL)

CONDENSER FANS

ECONOMIZER (OPTIONAL)
WIFI ANTENNA UNIT CONTROLLER

CONDENSER COIL

WIRELESS BOARD

IGNITION CONTROL

COMPRESSORS

BURNERS COMBUSTION AIR

GAS VALVE

INDUCER

INDOOR COIL RDS SENSOR

CONDENSATE DRAIN

(BEHIND EVAPORATOR COIL)

LCM092, 102, 120, 150 PARTS ARRANGEMENT

FILTERS (FOUR - 25 X 25 X 2")

REHEAT COIL (OPTIONAL)
EVAPORATOR COIL

BLOWER (DIRECT DRIVE)

CONDENSER FANS

COMPRESSOR INVERTER (BEHIND THE HINGED PANEL)

ECONOMIZER (OPTIONAL)
WIFI ANTENNA UNIT CONTROLLER
WIRELESS BOARD
COMPRESSORS

CONDENSER COIL

INDOOR COIL RDS SENSOR (BEHIND EVAPORATOR COIL)

CONDENSATE DRAIN

ELECTRIC HEAT (OPTIONAL)

Page 5

Shipping and Packing List
Package 1 of 1 contains: 1 - Assembled unit
Check unit for shipping damage. Receiving party should contact last carrier immediately if shipping damage is found.
General
These instructions are intended as a general guide and do not supersede local codes in any way. Authorities having jurisdiction should be consulted before installation.
The LGM092, 102, 120, & 150 gas/electric packaged rooftop unit is available in 130,000, 180,000, or 240,000 Btuh heating inputs. The LCM092, 102, 120, & 150 cooling packaged rooftop unit is the same basic design as the LGM unit except for the heating section. Optional electric heat is factory- or field-installed in LCM units.
Units are equipped with Environ micro channel condenser coils. Units are available with an optional hot gas reheat coil which provides dehumidifying modes of operation. Refer to Reheat Operation section.
Units are equipped with direct drive blowers. The blower will operate at lower speeds when demand is low and increase to higher speeds when demand is high. Refer to the Direct Drive Start-Up section.
The following examples show the model numbers of ten ton units with blower options.
LGM/LCM120U5E Single Zone VAV Direct Drive LGM/LCM120U5P VAV Direct Drive
All units are available using R454B, an ozone-friendly HFC refrigerant. Refer to the Cooling Start-Up section for precautions when installing unit.
Requirements
See TABLE 1 for unit clearances.
WARNING
Electric shock hazard and danger of explosion. Can cause injury, death or product or property damage. Turn off gas and electrical power to unit before performing any maintenance or servicing operations on the unit. Follow lighting instructions attached to unit when putting unit back into operation and after service or maintenance.

Optional Outdoor Air Hood

UNIT CLEARANCES
C

B D

FIGURE 1

TABLE 1 UNIT CLEARANCES

¹ Unit Clear-

D Top Clear-

ance

in.(mm) in.(mm) in.(mm) in.(mm) ance

Service Clearance

60 (1524)

36 (914)

60 (1524)

Unobstructed

Clearance to

Unob-

Combustibles (914)

(25)

structed

Minimum Operation Clearance

36 (914)

Unobstructed

NOTE - Entire perimeter of unit base requires support when elevated above mounting surface.

¹ Service Clearance - Required for removal of serviceable parts Clearance to Combustibles - Required clearance to combustible material (gas units). On LCM units, see clearance to combustible materials as outlined on heater rating plate. Minimum Operation Clearance - Required clearance for proper unit operation.

NOTICE
Roof Damage!
This system contains both refrigerant and oil. Some rubber roofing material may absorb oil, causing the rubber to swell. Bubbles in the rubber roofing material can cause leaks. Protect the roof surface to avoid exposure to refrigerant and oil during service and installation. Failure to follow this notice could result in damage to roof surface.

IMPORTANT
The Clean Air Act of 1990 bans the intentional venting of refrigerant (CFC's and HCFC's) as of July 1, 1992. Approved methods of recovery, recycling or reclaiming must be followed. Fines and/or incarceration may be levied for non-compliance.

Page 6

Minimum R454B Space and CFM Requirements

Minimum Airflow¹

Unit LCM/LGM092

Qmin(CFM) 193

Qmin(m³h) 328

LCM/LGM102

193

328

LCM/LGM120

217

369

LCM/LGM150

214

364

LCM/LGM092 W/ Humidtrol

193

328

LCM/LGM102 W/ Humidtrol

193

328

LCM/LGM120 W/ Humidtrol

217

369

LCM/LGM150 W/ Humidtrol

214

364

¹ NOTE - The minimum airflow is the lowest CFM allowed during venting

operation (leak mitigation).

Minimum Room Area of Conditioned Space²

Unit LCM/LGM092

TAmin(ft²) 107

TAmin(m²) 9.9

LCM/LGM102

107

9.9

LCM/LGM120

121

11.2

LCM/LGM150

119

11.0

LCM/LGM092 W/ Humidtrol

107

9.9

LCM/LGM102 W/ Humidtrol

107

9.9

LCM/LGM120 W/ Humidtrol

121

11.2

LCM/LGM150 W/ Humidtrol

119

11.0

Refrigerant Charge R-454B

Unit LCM/LGM092 STG 1

Mc(lbs) 7.3

LCM/LGM092 STG 2

5.1

LCM/LGM102 STG 1

7.3

LCM/LGM102 STG 2

5.1

LCM/LGM120 STG 1

8.22

LCM/LGM120 STG 2

4.59

LCM/LGM150 STG 1

8.1

LCM/LGM150 STG 2

5.78

LCM/LGM092 W/ Humidtrol STG 1

7.3

LCM/LGM092 W/ Humidtrol STG 2

5.1

LCM/LGM102 W/ Humidtrol STG 1

7.3

LCM/LGM102 W/ Humidtrol STG 2

5.1

LCM/LGM120 W/ Humidtrol STG 1

8.22

LCM/LGM120 W/ Humidtrol STG 2

4.59

LCM/LGM150 W/ Humidtrol STG 1

8.1

LCM/LGM150 W/ Humidtrol STG 2

5.78

Mc(kg) 3.31 2.31 3.31 2.31 3.73 2.08 3.67 2.62 3.31 2.31 3.31 2.31 3.73 2.08 3.67 2.62

² NOTE - The minimum room area of conditioned space is the smallest
area the unit can service.

Altitude Adjustment Factor³

Halt

200

400

600

800

1000

1200

1400

1600

200

400

600

800

1000

1200

1400

1600

Halt

1.02

1.05

1.04

1.1

1.12

1600

1800

2000

2200

2400

2600

2800

3000

3200

1.12

1.15

1.18

1.21

1.25

1.28

1.32

1.36

1.4

³ NOTE - Use the Altitude Adjustment Factor to adjust the values in the tables above to different altitudes. Find the relevant altitude above sea level in the two "Halt" rows and then multiply the value needed from the tables above by the altitude factor number. Example: For the minimum airflow in CFM for an LCM/LGM092 at 1000 ft. above see level, multiply 193 by 1.05 to get 202.65 CFM as the new Qmin.

Page 7

Use of this unit as a construction heater or air conditioner is not recommended during any phase of construction. Very low return air temperatures, harmful vapors and operation of the unit with clogged or misplaced filters will damage the unit.
If this unit has been used for heating or cooling of buildings or structures under construction, the following conditions must be met or the warranty will be void:
· A room thermostat or zone air temperature sensor must control the unit. The use of fixed jumpers that will provide continuous heating or cooling is not allowed.
· A pre-filter must be installed at the entry to the return air duct.
· The return air duct must be provided and sealed to the unit.
· Return air temperature range between 55°F (13°C) and 80°F (27°C) must be maintained.
· Air filters must be replaced and pre-filters must be removed upon construction completion.
· The input rate and temperature rise must be set per the unit rating plate.
· The heat exchanger, components, duct system, air filters and evaporator coil must be thoroughly cleaned following final construction clean-up.
· The unit operating conditions (including airflow, cooling operation, ignition, input rate, temperature rise and venting) must be verified according to these installation instructions.
This appliance is not intended for use by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
Unit Support
In downflow discharge installations, install the unit on a non-combustible surface only. Unit may be installed on combustible surfaces when used in horizontal discharge applications or in downflow discharge applications when installed on an C1CURB7*B roof mounting frame.
NOTE - Securely fasten roof frame to roof per local codes.
CAUTION
To reduce the likelihood of supply / return air by pass and promote a proper seal with the RTU, duct work / duct drops / diffuser assemblies must be supported independently to the building structure.

A-Downflow Discharge Application
Roof Mounting with C1CURB7*B
1 - The C1CURB7*B roof mounting frame must be installed, flashed and sealed in accordance with the instructions provided with the frame.
2 - The C1CURB7*B roof mounting frame should be square and level to 1/16" per linear foot (5mm per linear meter) in any direction.
3 - Duct must be attached to the roof mounting frame and not to the unit; supply and return plenums must be installed before setting the unit.
Installer's Roof Mounting Frame
Many types of roof frames can be used to install the unit depending upon different roof structures. Items to keep in mind when using the building frame or supports are:
1 - The base is fully enclosed and insulated, so an enclosed frame is not required.
2 - The frames or supports must be constructed with non-combustible materials and should be square and level to 1/16" per linear foot (5mm per linear meter) in any direction.
3 - Frame or supports must be high enough to prevent any form of moisture from entering unit. Recommended minimum frame height is 14" (356mm).
4 - Duct must be attached to the roof mounting frame and not to the unit. Supply and return plenums must be installed before setting the unit.
5 - Units require support along all four sides of unit base. Supports must be constructed of steel or suitably treated wood materials.
NOTE - When installing a unit on a combustible surface for downflow discharge applications, an C1CURB7*B roof mounting frame is required.
B-Horizontal Discharge Applications
1 - Units installed in horizontal airflow applications must use a horizontal conversion kit K1HECK00.
2 - Specified installation clearances must be maintained when installing units. Refer to FIGURE 1.
3 - Top of support slab should be approximately 4" (102mm) above the finished grade and located so no run-off water from higher ground can collect around the unit.
4 - Units require support along all four sides of unit base. Supports must be constructed of steel or suitably treated wood materials.

Page 8

Duct Connection
All exterior ducts, joints and openings in roof or building walls must be insulated and weather-proofed with flashing and sealing compounds in accordance with applicable codes. Any duct passing through an unconditioned space must be insulated.
CAUTION
In downflow applications, do not drill or punch holes in base of unit. Leaking in roof may occur if unit base is punctured.
Rigging Unit for Lifting
Rig unit for lifting by attaching four cables to holes in unit base rail. See FIGURE 2.
1 - Detach wooden base protection before rigging. NOTE - Remove all 7 base protection brackets before setting unit.
2 - Connect rigging to the unit base using both holes in each corner.
3 - All panels must be in place for rigging.
4 - Place field-provided H-style pick in place just above top edge of unit. Frame must be of adequate strength and length. (H-style pick prevents damage to unit.)
Condensate Drains
Make drain connection to the 1" N.P.T. drain coupling provided on unit.
NOTE - The drain pan is made with a glass reinforced engineered plastic capable of withstanding typical joint torque but can be damaged with excessive force. Tighten pipe nipple hand tight and turn an additional quarter turn.
A trap must be installed between drain connection and an open vent for proper condensate removal. See FIGURE 3 or FIGURE 4. It is sometimes acceptable to drain condensate onto the roof or grade; however, a tee should be fitted to the trap to direct condensate downward. The condensate line must be vented. Check local codes concerning condensate disposal. Refer to page 1 and page 4 for condensate drain location.

RIGGING

Unit

*Weight

Lbs.

Kg.

LGM LCM

1321

599

1286

583

*Maximum weight with all available factory-installed accessories.

CAUTION - Do not walk on unit.

IMPORTANT - ALL PANELS MUST BE IN PLACE FOR RIGGING.
LIFTING POINT SHOULD BE DIRECTLY ABOVE CENTER OF GRAVITY

FIGURE 2
CONDENSATE SIDE DRAIN CONNECTION

CAULK AROUND CONDENSATE COUPLING

NOTE - Allow clearance to open doors when installing condensate piping.

Minimum Pitch 1" (25 mm) per 10' (3 m) of line

OPEN VENT

UNIT

FIGURE 3

MOUNTING FRAME

Page 9

CONDENSATE BOTTOM DRAIN CONNECTION
UNIT
DRAIN PAN CAULK AROUND CONDENSATE COUPLING
OPEN VENT

MOUNTING FRAME

Minimum Pitch 1" (25 mm) per 10'
(3 m) of line

FIGURE 4
Units are shipped with the drain coupling facing the front of the unit. Condensate can be drained from the back or bottom of the unit with the following modifications. The unit can be installed in either downflow or horizontal air discharge regardless of condensate drain location.
Rear Drain Connection
1 - Open blower and heat access doors. See FIGURE 5.

FILTER ACCESS DOOR

BLOWER ACCESS DOOR

2 - Remove six screws from filter access door. Refer to FIGURE 6.
UNITS WITH HINGED PANELS
FILTER DOOR
CONDENSATE DRAIN MULLION
REMOVE THREE SCREWS (PER HINGE)
FIGURE 6 3 - Open filter access door hinges and carefully remove
door. 4 - Remove eight screws holding condensate drain
mullion and remove mullion. 5 - Lift front edge of the drain pan (to clear bottom drain
plug) and slide drain pan out of unit. See FIGURE 7.

HEAT ACCESS DOOR CONDENSATE DRAIN MULLION
FIGURE 5

DRAIN PAN
FIGURE 7 6 - Make sure the cap over the unit bottom drain hole
is secure. 7 - Rotate the drain pan until the downward slope is
toward the back of the unit. Slide the drain pan back into the unit. Be careful not to dislodge the cap over the bottom drain hole. 8 - From the back side of the unit, pull the drain pan coupling through the rear condensate opening. 9 - Replace the condensate drain mullion and reinstall eight screws. 10 - Reinstall filter door on hinges.

Page 10

Bottom Drain Connection
1 - Open blower and heat access doors. See FIGURE 5.
2 - Remove six screws from filter access door. Refer to FIGURE 6.
3 - Open filter access door hinges and carefully remove door.
4 - Remove eight screws holding condensate drain mullion and remove mullion.
5 - Lift front edge of the drain pan (to clear bottom drain plug) and slide drain pan out of unit. See FIGURE 7.
6 - Turn the drain pan upside down and drill a pilot hole through the bottom of the drain pan in the center of the coupling. See FIGURE 8.

BOTTOM CONDENSATE DRAIN

CAUTION: Be careful not to damage the coupling threads
when drilling the hole.

DRILL A PILOT HOLE IN CENTER
OF COUPLING

After drilling the pilot hole, drill a 7/8" hole from
the inside of the pan.
FIGURE 8 7 - From the inside of the pan, use a Vari-Bit® bit to
enlarge the hole to 7/8". Do not damage coupling threads.
8 - Remove the cap over the unit bottom drain hole.
9 - Slide the drain pan back into the unit.
10 - From the back side of the unit, pull the drain pan coupling through the rear condensate opening.
11 - From the front side of the unit, move the drain pan until the bottom coupling settles into the unit bottom drain opening. Once in place, check to make sure the coupling is still positioned through the rear condensate drain hole.
12 - Use a field-provided 1" plug to seal side drain connection.
13 - Replace the condensate drain mullion and reinstall eight screws.
14 - Reinstall filter door on hinges.

Connect Gas Piping (Gas Units)
Before connecting piping, check with gas company or authorities having jurisdiction for local code requirements. When installing gas supply piping, length of run from gas meter must be considered in determining pipe size for 0.5" w.c. (.12kPa) maximum pressure drop. Do not use supply pipe smaller than unit gas connection. For natural gas units, operating pressure at the unit gas connection must be a minimum of 4.7" w.c. (1.17kPa) and a maximum of 10.5" (2.60kPa) w.c. For LP/propane gas units, operating pressure at the unit gas connection must be a minimum of 10.8" w.c. (2.69kPa) and a maximum of 13.5" w.c. (3.35kPa).
When making piping connections a drip leg should be installed on vertical pipe runs to serve as a trap for sediment or condensate. A 1/8" N.P.T. plugged tap is located on gas valve for test gauge connection. Refer to Heating Start-Up section for tap location. Install a ground joint union between the gas control manifold and the main manual shut-off valve. See FIGURE 9 for gas supply piping entering outside the unit. FIGURE 10 shows bottom gas entry piping through the curb. FIGURE 11 shows bottom gas entry piping through the unit.
Compounds used on threaded joints of gas piping shall be resistant to the action of liquefied petroleum gases.
OUTSIDE OF UNIT GAS PIPE CONNECTION

GROUND JOINT UNION
TO GAS SUPPLY

TO GAS VALVE

GAS PIPING SUPPORT
MANUAL MAIN SHUT-OFF VALVE

DRIP LEG
(REFER TO LOCAL CODES)

FIGURE 9

Page 11

BOTTOM ENTRY GAS PIPING THROUGH THE CURB

MULLION BETWEEN

SOR SECTIONS

4" NIPPLE

4" NIPPLE
TO GAS VALVE

GROMMET ALL ELBOWS ARE 3/4"
MANUAL MAIN SHUT-OFF VALVE

5" NIPPLE
7-1/2" NIPPLE GROUND JOINT UNION
4" NIPPLE

TO GAS SUPPLY
10" NIPPLE ROOF MOUNTING FRAME
FIGURE 10

3-1/2" NIPPLE
3" NIPPLE DRIP LEG

BOTTOM GAS ENTRY THROUGH THE UNIT

ALL ELBOWS ARE 3/4"

MULLION BETWEEN

10" NIPPLE GROMMET

GROMMET 7-1/2" NIPPLE

SOR SECTIONS 5" NIPPLE
4" NIPPLE

4" NIPPLE

TO GAS VALVE

7" NIPPLE

TO GAS SUPPLY

GROUND JOINT UNION

ALTERNATE KNOCKOUTS
ROOF MOUNTING FRAME
DRIP LEG

4" NIPPLE MANUAL MAIN SHUT-OFF VALVE
3-1/2" NIPPLE
3" NIPPLE

Pressure Test Gas Piping (Gas Units)
When pressure testing gas lines, the gas valve must be disconnected and isolated. Gas valves can be damaged if subjected to more than 0.5 psig (3.48kPa). See FIGURE 12. NOTE - Codes may require that manual main shut-off valve and union (furnished by installer) be installed in gas line external to unit. Union must be of the ground joint type.
After all connections have been made, check all piping connections for gas leaks. Also check existing unit gas connections up to the gas valve; loosening may occur during installation. Use a leak detection solution or other preferred means. Do not use matches candles or other sources of ignition to check for gas leaks. NOTE - In case emergency shut down is required, turn off the main manual shut-off valve and disconnect main power to unit. These devices should be properly labeled by the installer.
PRESSURE TEST GAS LINE
MANUAL MAIN SHUT-OFF VALVE

GAS VALVE

CAP

FIGURE 12

CAUTION
Some soaps used for leak detection are corrosive to certain metals. Carefully rinse piping thoroughly after leak test has been completed. Do not use matches, candles, flame or other sources of ignition to check for gas leaks.

WARNING
Danger of explosion. Can cause injury or product or property damage. Do not use matches, candles, flame or other sources of ignition to check for leaks.

FIGURE 11

Page 12

High Altitude Derate
Locate the high altitude conversion sticker in the unit literature bag. Fill out the conversion sticker and affix next to the unit nameplate. High altitude kits are available for field-installation.
Refer to TABLE 2 for high altitude adjustments.

TABLE 2 HIGH ALTITUDE DERATE

Altitude Ft.*

Gas Manifold Pressure

2000-4500

See Unit Nameplate

4500 and Above

Derate 4% / 1000 Ft. above Sea Leavel

*Units installed at 0-2000 feet do not need to be modified.

NOTE - This is the only permissible derate for these units.

Electrical Connections - Power Supply
Route field wiring in conduit between bottom power entry disconnect. See FIGURE 13. This does not supersede local codes or authorities having jurisdiction.
Do not apply power or close disconnect switch until installation is complete. Refer to start-up directions. Refer closely to unit wiring diagram.
Refer to unit nameplate for minimum circuit ampacity and maximum fuse size.
1 - 230/460/575 volt units are factory wired. For 208V supply, disconnect the orange wire (230V) at all control power transformer(s). Reconnect the red wire (208V). Tape the exposed end of the 230V orange wire.
2 - Route power through the bottom power entry area. On gas units or units with electric heat, connect power wiring to TB2. On cooling only units, connect power to F4. If unit contains an optional factory-installed circuit breaker or disconnect switch, connect line voltage to CB10 or S48. See unit wiring diagram.
3 - Connect separate 120v wiring to optional GFCI outlet. Route field wiring in conduit between bottom power entry and GFCI. See FIGURE 13.

FIELD WIRE ROUTING

SIDE ENTRY KNOCKOUTS

MAKE-UP BOX
OPTIONAL 120V GFI

SEAL WATERTIGHT

RUN FIELD WIRING IN
VIDED CONDUIT
BOTTOM POWER ENTRY
FIGURE 13

Electrical Connections - Control Wiring
Connect either a thermostat, room/zone sensor, or direct digital controller; one of the three are required for unit function. Refer to the literature provided with each device and the following information.
NOTE - Optional wireless sensors are available for use with this unit.

CAUTION
Electrostatic discharge can affect electronic components. Take precautions during unit installation and service to protect the electronic controls. Precautions will help to avoid control exposure to electrostatic discharge by putting the unit, the control and the technician at the same electrostatic potential. Neutralize electrostatic charge by touching hands and all tools on an unpainted unit surface, such as the gas valve or blower deck, before performing any service procedure.
A-Thermostat Location
Applied to units in default thermostat control mode only.
Room thermostat mounts vertically on a standard 2" X 4" handy box or on any non-conductive flat surface.
Locate thermostat approximately 5 feet (1524mm) above the floor in an area with good air circulation at average temperature. Avoid locating the room thermostat where it might be affected by:
· drafts or dead spots behind doors and in corners · hot or cold air from ducts · radiant heat from sun or appliances · concealed pipes and chimneys
B-Control Wiring
The Unit Controller will operate the unit from a thermostat or zone sensor based on the System Mode. The default

Page 13

System Mode is the thermostat mode. Refer to the Unit Controller Setup Guide to change the System Mode. Use the mobile service app menu and select Settings > Install.
Thermostat Mode
1 - Route thermostat cable or wires from subbase to control area above compressor (refer to unit dimensions to locate bottom and side power entry).
IMPORTANT - Unless field thermostat wires are rated for maximum unit voltage, they must be routed away from line voltage wiring. Use wire ties located near the lower left corner of the controls mounting panel to secure thermostat cable.
Use18 AWG wire for all applications using remotely installed electro-mechanical and electronic thermostats. 2 - Install thermostat assembly in accordance with instructions provided with thermostat.
3 - Connect thermostat wiring to Unit Controller on the lower side of the controls hat section.
4 - Wire as shown in FIGURE 14 for electromechanical and electronic thermostats. If using other temperature control devices or energy management systems see instructions and wiring diagram provided by manufacturer.
IMPORTANT - Terminal connections at the Unit Controller must be made securely. Loose control wire connections may allow unit to operate but not with proper response to room demand.
Zone Sensor Mode
The Unit Controller will operate heating and cooling based on the Unit Controller internal setpoints and the temperature from the A2 room sensor. An optional Network Control Panel (NCP) can also be used to provide setpoints. A thermostat or return air sensor can be used as a back-up mode. Make room sensor wiring connections as shown in FIGURE 15.
C-Hot Gas Reheat Units Only
1 - Install humidity sensor in accordance with instructions provided with sensor. A DDC input may be used to initiate dehumidification instead of a sensor.
2 - Make wiring connections as shown in FIGURE 14 for Thermostat Mode or FIGURE 15 for Zone Sensor Mode. In addition, connect either a humidity sensor or a dehumidification input. See FIGURE 17 or FIGURE 18 for humidity sensor wiring or FIGURE 16 for dehumidification input wiring.

P262 J262C

24 VOLT FIELD WIRING IN THERMOSTAT MODE

24 V POWER

J297A P297

A55

OCP

FIGURE 14
FIELD WIRING IN ZONE SENSOR MODE (Zone Sensor Mode)

UNIT CONTROLLER

24VAC SENSOR SENSOR IAQ

INPUTS

R C AI1

HUM TMP AI2 C R

J298

A2 SENSOR
FIGURE 15

FIELD WIRING HOT GAS REHEAT UNITS (Using A Dehumidification Switch)

J299

DEHUMIDIFICATION SWITCH

DI-4

Use 24 VAC (R) from any terminal available on J299-2, -5, or -7.
FIGURE 16
Humidity Sensor Cable Applications:
Wire runs of 50 feet (mm) or less:
Use two separate shielded cables containing 20AWG minimum, twisted pair conductors with overall shield. Belden type 8762 or 88760 (plenum) or equivalent. Connect both cable shield drain wires to the Unit Controller

Page 14

as shown in FIGURE 17.
Wire runs of 150 feet (mm) or less:
Use two separate shielded cables containing 18AWG minimum, twisted pair conductors with overall shield. Belden type 8760 or 88760 (plenum) or equivalent. Connect both cable shield drain wires to the Unit Controller as shown in FIGURE 17.
Wire runs over 150 feet (mm)
Use a local, isolated 24VAC transformer such as Lennox cat #18M13 (20VA minimum) to supply power to RH sensor as shown in figure 19. Use two shielded cables containing 20AWG minimum, twisted pair conductors with overall shield. Belden type 8762 or 88760 (plenum) or equivalent.

FIELD WIRING HOT GAS REHEAT UNITS (Using A

Humidity Sensor With Less Than 150 Ft. Wire

NOT CONNECTED

Runs) J298A 1

A55 UNIT CONTROLLER
P298 R

A91 VIN

AI1

HUM

GND
DRAIN
VO

TMP

AI2

NOT

UNUSED

FIGURE 17

FIELD WIRING HOT GAS REHEAT UNITS (Using

A Humidity Sensor With More than 150Ft. Wire

NOT

Runs)

CONNECTED ISOLATED 24V

TRANSFORMER

A55 UNIT

CONTROLLER

J298A 1 P298 R

A91

DRAIN

VIN

NOT

CONNECTED
4 C

C AI1
HUM

GND VO

TMP

AI2

FIGURE 18

Page 15

Mobile Service App
Setup and configure each rooftop unit using the mobile service app (Android or iOS devices supported).
A-Mobile Device Requirements
· Bluetooth connection. · Android hardware requires 2GB RAM and a 2Ghz
core processor. Tablets are supported. · The app is available for both iOS 11.0 or higher (App
Store) and Android 9.0 or higher (Google Play). B-Download the App
Use your mobile device to scan the QR code from the cover page and download the mobile service app to your mobile device.
C-Pair the App to the Unit Controller
1 - Apply power to the unit and wait until the Unit Controller has booted-up (approximately two minutes).
2 - Press and hold the pair button for five seconds. See FIGURE 20.
3 - The unit (or list of units) will appear; select the appropriate unit. When the app code matches the four-character code on the Unit Controller display, the unit is paired (within 10 seconds). Note the following:
· The app will list the units by signal strength; the RTU name will be displayed.
· Once paired, the RTU name, model number, serial number and firmware version will be displayed.
Please refer to the manufacturer's website for additional technical information and self-help support.

D-App Menus
See FIGURE 19 for the menu overview. Follow the app prompts in the Install, Network Integration, and Test and Balance menus. Verify the app is setup properly for the unit application (including the date and time). Refer to FIGURE 21, FIGURE 22, and FIGURE 23.

MOBILE SERVICE APP MENU OVERVIEW

RTU MENU

SETUP

INSTALL
NETWORK INTEGRATION
TEST AND BALANCE

SERVICE SETTINGS

ALARM HISTORY DATA TRENDING
FACTORY RUNTIMES SYSTEM DATA / SENSORS / OUTPUTS
COMPONENT TEST REPORT
ADVANCED CONTROL FIRMWARE UPDATE
RTU OPTION INSTALL

FIGURE 19

W4 COMMUNICATION MODULE

Supports BLE Wireless Sensors and Repeaters, Ethernet (BACnet IP) and BACnet (MS/TP) Connections
Service App QR Code

LED Status: Solid Blue - Controller still in boot-up state (check 7-segment LED)
or app is already connected. Green - Controller is powered-up and no Bluetooth® devices are
currently connected. Blinking Blue-Controller is looking for a device to connect to
via bluetooth.
Pair Button and LED

2-Port Ethernet Switch
BACnet IP * Au * Allows daisy-chain connection

BACnet
USB port
* Manual Firmware Updates * System Logs and Reports * Co

Reset Button and Heart Beat LED
Cloud / IP Button and LED
* Button not used at this time * LED indicates BACnet and cloud
connectivity.
BACnet MS/TP
* Standard on CORE Unit Controller * New objects supported

FIGURE 20

Page 16

INSTALL*

SELECT INSTALL OPTION

*Under "Settings" section

INSTALL MENU

NEW UNIT SETUP

DATE AND TIME

RTU NAME MODEL NUMBER SERIAL NUMBER CATALOG NUMBER

CONFIGURATION ID 1 CONFIGURATION ID 2

Partial menu shown. Complete all three menu paths and select "Finish" at the summary screen.

FIGURE 21

TEST AND BALANCE MENU

TEST AND BALANCE

BLOWER

DAMPER
Partial menu shown. Complete all three menu paths and select "Finish" at the summary screen.
FIGURE 22

NETWORK INTEGRATION MENU

NETWORK INTEGRATION

NETWORK SETUP WIZARD

FIGURE 23

E-Unit Controller Components See FIGURE 24 for Unit Controller components. See FIGURE 24 and TABLE 3 for pushbutton and LED functions.
UNIT CONTROLLER (A55)

J380

Four Character 7-Segment LED

White Push Button

J379

J298

Black Push Button

Sensor IAQ

Sensor

A11

HUM TMP

Inputs A12 C R

J297

24VAC Gnd J299

Duct Sensor

J378

Room

Sensor and RH

IAQ Sensors

R + C
Spare Analog Inputs

Humidistat

Thermostat

Smoke

Inputs

24VAC Digital

GLO+Service Relay

Inputs

S-BUS Factory Test

S-BUS SmartWireTM System J304

LONTalk Module

FIGURE 24

Page 17

TEST BUTTON
* Short press will put the unit into test mode - tESt
* Long press will put the unit into setup mode
for two-stage thermostate - StAt

* Short press is about 2 to 5 seconds in duration. * Long press is about 5 to 8 seconds in duration

RESET BUTTON
* Short press will clear unit delays (lockouts) - CLdL * Long press will reset the M4 Unit Controller - rSt

FIGURE 25

TABLE 3

UNIT CONTROLLER PUSHBUTTON CODES

Code

Cause

Action

CLdL

Black Button: Short Press

Clear Delays

rSt

Black Button: Long Press

Reset

tESt

White Button: Short Press

TSTAT Test

White Button: Long

StAt

Press (In Pre-Install TSTAT Override

state)

White Button: Long

tESt

Press (NOT in

TSTAT Test

Pre-Install State)

Short Press : 2 to 5 seconds.

Long Press : 5 to 8 seconds.

Page 18

Blower Operation
Units are equipped with variable speed, direct drive blowers. The installer is able to enter the design-specified supply air CFM into the Unit Controller for optimal efficiency. The Unit Controller calibrates the supply air volume which eliminates the need to manually take duct static measurements. Refer to C-Adjusting Unit CFM Ultra High Efficiency Direct Drive Blowers.
IMPORTANT
Compressor two is the only component that must be checked to ensure proper phasing. Follow "COOLING START-UP" section of installation instructions to en sure proper compressor and blower operation.
The Unit Controller checks the incoming power during start-up. If the voltage or phase is incorrect, the Unit Controller will display an alarm and the unit will not start.
A-Blower Operation
Refer to the Unit Controller Setup Guide to energize blower. Use the mobile service app menu; see SERVICE > TEST.
In thermostat control mode, the Unit Controller will stage the blower between low and high speed. In zone sensor control mode, the Unit Controller will vary (VAV) the blower between low and high speed.
WARNING
1- Make sure that unit is installed in accordance with the installation instructions and applicable codes.
2- Inspect all electrical wiring, both field and factoryinstalled, for loose connections. Tighten as required.
3- Check to ensure that refrigerant lines do not rub against the cabinet or against other refrigerant lines.
4- Check voltage at disconnect switch. Voltage must be within range listed on nameplate. If not, consult power company and have voltage condition corrected before starting unit.
5- Make sure filters are new and in place before start-up.

Initiate blower only (G) demand at thermostat according to instructions provided with thermostat. Unit will cycle on thermostat demand. The following steps apply to applications using a typical electro-mechanical thermostat.
1 - Blower operation is manually set at the thermostat subbase fan switch. With fan switch in ON position, blowers will operate continuously.
2 - With fan switch in AUTO position, the blowers will cycle with demand. Blowers and entire unit will be off when system switch is in OFF position.
NOTE - Blower operation mode can also be initiated by the mobile service app.
Direct-drive motor may not immediately stop when power is interrupted to the Unit Controller. Disconnect unit power before opening the blower compartment. The Controller's digital inputs must be used to shut down the blower. See Unit Controller manual for operation sequences.
B-Blower Access
The blower assembly is secured to a sliding frame which allows the blower assembly to be pulled out of the unit. See FIGURE 27.
1 - Loosen the reusable wire tie which secures the controls and high voltage blower wiring to the blower housing. Disconnect the pressure sensor low voltage wire harness.
2 - Remove and retain screws on either side (and on the front for direct drive) of sliding frame. Use the metal handle to pull frame toward outside of unit.
3 - Slide frame back into original position when finished servicing. Reattach the blower wiring in the previous location using the wire tie. Reconnect pressure sensor low voltage wire harness.
4 - Replace retained screws.

Page 19

LOCATION OF STATIC PRESSURE READINGS

INSTALLATIONS WITH DUCTWORK

INSTALLATIONS WITH CEILING DIFFUSERS

ROOFTOP UNIT

RETURN AIR READING LOCATION

SUPPLY TURN
MAIN DUCT RUN

FIRST BRANCH OFF OF MAIN RUN

SUPPLY AIR READING LOCATION

FIGURE 26

SUPPLY TURN
DIFFUSER

DIRECT DRIVE BLOWER ASSEMBLY

BLOWER HOUSING

RETURN AIR READING LOCATION

BLOWER MOTOR SECURED TO THIS SIDE OF HOUSING

REMOVE TWO SCREWS ON EACH SIDE TO SLIDE
BLOWER OUT OF UNIT

INLET GRID

FIGURE 27

Page 20

Direct Drive Blower Start-Up
The supply CFM can be adjusted by changing Unit Controller settings. Refer to TABLE 4 for menu paths and default settings. Record any CFM changes on the parameter settings label located on the inside of the compressor access panel.
IMPORTANT
The BLOWER CALIBRATION process starts the in door blower at operational speeds and moves the economizer damper blades. Before starting this process, replace any access panels and close all unit doors except compressor compartment door.

Blower calibration is required only on units that are newly installed or if there is a change in the duct work or air filters after installation. Use the mobile service app to navigate to the SETUP>TEST & BALANCE>BLOWER menu.
After the new CFM values are entered, select START CALIBRATION. The blower calibration status is displayed as a % complete. Upon successful completion, the mobile service app will display CALIBRATION SUCCESS and go back to the blower calibration screen.
IMPORTANT - The default value for Cooling Low CFM is lower than a traditional singe- or two-speed unit. If operating the unit with a 2- or 3-stage controller (2- or 3-stage thermostat, DDC controller, etc.), it is recommended to increase the Cooling Low CFM default value to a suitable level for part load cooling (typically 60% of full load CFM).

TABLE 4 DIRECT DRIVE PARAMETER SETTINGS

Parameter

Factory Setting 092 102 120 150

Field Setting

Description

NOTE - Any changes to Smoke CFM setting must be adjusted before the other CFM settings. Use SETTINGS > RTU OPTIONS > EDIT PARAMETERS = 12

BLOWER SMOKE CFM

3000 3400 4000 5000

CFM Smoke blower speed

SETUP > TEST & BALANCE > BLOWER

BLOWER HEATING HIGH CFM

3000 3400 4000 5000

CFM Heating blower speed

BLOWER COOLING HIGH CFM

2625 2975 3500 4375

CFM High cooling blower speed

BLOWER COOLING LOW CFM

800 800 875 1100

CFM Low cooling blowr speed

BLOWER VENTILATION CFM

800 800 875 1100

CFM Ventilation blower speed

SETUP > TEST & BALANCE > DAMPER

BLOWER HIGH CFM DAMPER POS % 0%

% Minimum damper position for high speed blower operation.

BLOWER LOW CFM DAMPER POS % 0%

% Minimum damper position for low speed operation.

BLOWER EXHAUST DAMPER POS % 50% 50% 50% SETTINGS > RTU OPTIONS > EDIT PARAMETERS = 216

50%

% Minimum damper position for power exhaust operation.

POWER EXHAUST DEADBAND %

10% 10% 10% 10%

% Deadband % for power exhaust operation.

SETTINGS > RTU OPTIONS > EDIT PARAMETER = 10 (Applies to Thermostat Mode ONLY)

FREE COOLING STAGE-UP DELAY

300 300 300 300 sec, sec. sec. sec.

sec

Number of seconds to hold indoor blower at low speed before switching to indoor blower at high speed.

Installer - Circle applicable unit model number and record any parameter changes under "Field Setting" column. Settings need to be recorded by installer for use when Unit Controller is replaced or reprogrammed.

Page 21

BLOWER DATA

BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY (NO HEAT SECTION) WITH DRY INDOOR COIL AND AIR FILTERS IN PLACE.
FOR ALL UNITS ADD:
1 - Wet indoor coil air resistance of selected unit. 2 - Any factory installed options air resistance (heat section, Economizer, etc.) 3 - Any field installed accessories air resistance (duct resistance, diffuser, etc.) See page 23 for wet coil and option/accessory air resistance data. See page 23 for minimum air volume required for use with optional electric heat.

Maximum Static Pressure With Gas Heat - 2.0 in. w.g.
Minimum Air Volume Required For Different Gas Heat Sizes: Standard - 2150 cfm; Medium - 2250 cfm; High - 2600 cfm

Total Air Volume
cfm

0.2 RPM Watts

0.4 RPM Watts

Total Static Pressure - in. w.g.

0.6

0.8

1.0

RPM Watts RPM Watts RPM Watts

1.2 RPM Watts

1.4 RPM Watts

1750

644 137 740 235 796 302 833 343 873 373 996 558 1065 664

2000

675 165 768 260 821 330 861 386 960 507 1026 629 1094 753

2250

711 195 803 290 856 375 901 497 991 564 1058 703 1128 840

2500

764 241 852 335 904 439 951 568 1025 641 1097 789 1170 934

2750

847 316 901 399 946 543 1004 674 1074 746 1146 895 1220 1041

3000

944 426 980 511 1021 671 1074 803 1136 874 1205 1021 1276 1167

3250

1022 544 1057 640 1099 810 1149 942 1207 1012 1272 1156 1338 1304

3500

1092 666 1131 770 1174 948 1225 1081 1281 1151 1342 1297 1402 1451

3750

1161 780 1202 892 1248 1079 1298 1217 1353 1291 1409 1445 1463 1609

4000

1230 888 1273 1010 1319 1212 1369 1362 1421 1441 1471 1608 1518 1784

4250

1299 1006 1342 1140 1388 1362 1436 1526 1483 1612 1528 1790 1571 1975

4500

1366 1142 1409 1289 1454 1532 1498 1708 1542 1798 1583 1984 1623 2172

4750

1432 1295 1474 1457 1516 1719 1558 1903 1598 1997 1637 2187 1674 2377

5000

1496 1471 1537 1645 1577 1921 1616 2110 1654 2205 1690 2396 1726 2586

5250

1560 1667 1598 1849 1636 2132 1673 2324 1709 2419 1744 2609 1779 2796

5500

1623 1878 1659 2064 1695 2349 1731 2539 1765 2634 -

5750

1686 2097 1720 2284 1755 2567 -

6000

1748 2316 1781 2502 -

Total Air Volume
cfm

1.6 RPM Watts

1.8 RPM Watts

Total Static Pressure - in. w.g.

2.0

2.2

2.4

RPM Watts RPM Watts RPM Watts

2.6 RPM Watts

1750

1134 775 1203 896 1275 1025 1356 1149 1422 1287 1470 1439

2000

1162 878 1231 1007 1302 1139 1379 1268 1440 1411 1486 1570

2250

1198 975 1268 1111 1338 1250 1409 1388 1464 1542 1507 1711

2500

1243 1075 1313 1217 1380 1365 1442 1517 1491 1685 1533 1860

2750

1293 1186 1361 1336 1423 1494 1477 1661 1520 1839 1561 2016

3000

1346 1317 1410 1474 1466 1642 1514 1818 1554 2000 1594 2180

3250

1402 1460 1460 1627 1511 1803 1553 1986 1591 2172 1631 2352

3500

1459 1616 1509 1793 1555 1976 1594 2165 1631 2352 1671 2531

3750

1512 1785 1557 1970 1599 2159 1636 2350 1673 2536 1713 2714

4000

1562 1969 1604 2157 1643 2347 1680 2538 1717 2722 1756 2896

4250

1611 2163 1650 2352 1688 2541 1724 2729 1762 2908 -

4500

1661 2362 1698 2552 1734 2739 1770 2922 -

4750

1710 2567 1746 2754 -

5000

1761 2774 -

5250

Page 22

BLOWER DATA

POWER EXHAUST FAN PERFORMANCE Return Air System Static Pressure in. w.g. 0 0.05 0.10 0.15 0.20 0.25 0.30 0.35

Air Volume Exhausted cfm 3175 2955 2685 2410 2165 1920 1420 1200

MINIMUM AIR VOLUME REQUIRED FOR USE WITH OPTIONAL ELECTRIC HEAT

Electric Heat kW

Minimum cfm

7.5

1750

2750

22.5

2750

3500

FACTORY INSTALLED OPTIONS/FIELD INSTALLED ACCESSORY AIR RESISTANCE - in. w.g.

Air

Wet Indoor Coil

Gas Heat Exchanger

Volume

Standard Medium High

cfm 092, 102 120, 150 Heat

Heat Heat

Electric Heat

Econo mizer

Condensor Reheat Coil

1750 0.04 0.04

0.06

0.02

0.03

0.05

0.02

2000 0.05 0.05

0.07

0.05

0.06

0.03

0.06

0.02

2250 0.06 0.06

0.07

0.08

0.04

0.08

0.02

2500 0.07 0.07

0.09

0.10

0.11

0.04

0.11

0.03

2750 0.08 0.08

0.09

0.11

0.12

0.05

0.12

0.03

3000 0.10 0.09

0.11

0.12

0.13

0.06

0.13

0.03

3250 0.11 0.10

0.12

0.15

0.16

0.06

0.15

0.04

3500 0.12 0.11

0.12

0.16

0.17

0.09

0.15

0.04

3750 0.14 0.13

0.14

0.19

0.20

0.09

0.15

0.05

4000 0.15 0.14

0.14

0.21

0.22

0.09

0.19

0.05

4250 0.17 0.15

0.14

0.24

0.28

0.13

0.19

0.06

4500 0.19 0.17

0.15

0.26

0.32

0.14

0.22

0.07

4750 0.20 0.18

0.16

0.29

0.37

0.17

0.25

0.07

5000 0.22 0.20

0.16

0.34

0.43

0.20

0.29

0.08

5250 0.24 0.22

0.16

0.37

0.47

0.22

0.32

0.08

5500 0.25 0.23

0.18

0.44

0.54

0.25

0.34

0.09

5750 0.27 0.25

0.19

0.49

0.59

0.31

0.45

0.10

6000 0.29 0.27

0.20

0.54

0.64

0.33

0.52

0.10

MERV 8
0.01 0.01 0.01 0.01 0.02 0.02 0.02 0.03 0.03 0.04 0.04 0.04 0.05 0.06 0.06 0.07 0.07 0.08

Filters MERV 13 MERV 16

0.03

0.05

0.03

0.06

0.04

0.07

0.05

0.08

0.05

0.09

0.06

0.10

0.06

0.11

0.07

0.12

0.08

0.13

0.08

0.14

0.09

0.15

0.09

0.17

0.10

0.18

0.10

0.19

0.11

0.20

0.12

0.22

0.12

0.23

0.13

0.24

Return Air
Adaptor Plate 0.00 0.00 0.00 0.00 0.00 0.02 0.02 0.04 0.07 0.09 0.11 0.12 0.16 0.18 0.19 0.22 0.25 0.27

Page 23

Refrigerant Leak Detection System
A-System Test
1 - Initiate Refrigerant Leak Detection System Test by using the following mobile service app menu path:
RTU MENU > COMPONENT TEST > LEAK DETECTION > START TEST
2 - Ensure that indoor blower, outdoor fan, and combustion air blower (LGM only) are energized.
Cooling Start-Up
IMPORTANT - The crankcase heater must be energized for 24 hours before attempting to start compressor. Set thermostat so there is no demand to prevent compressors from cycling. Apply power to unit.
A-Start-Up 1 - Initiate full load cooling operation using the following mobile service app menu path:
RTU MENU > SERVICE > COMPONENT TEST > COOLING > COOL 4
2 - Refer to Cooling Operation section for cooling startup.
3 - Units have two refrigerant circuits. See FIGURE 33.
4 - Each refrigerant circuit is charged with R454B refrigerant. See unit rating plate for correct amount of charge.
5 - Refer to Refrigerant Check and Charge section for proper method to check refrigerant charge.
B-R454B Refrigerant
Units charged with R454B refrigerant operate at lower pressures than R410A. The expansion valve and liquid line dryer provided with the unit are approved for use with R454B and R410A.
R454B refrigerant is stored in a gray cylinder.
CAUTION
Mineral oils are not compatible with R454B. If oil must be added, it must be a polyolester oil.
Manifold gauge sets used with systems charged with R454B refrigerant must be capable of handling various system operating pressures. The gauges should be rated for use with pressures of 0-800 on the high side and a low side of 30" vacuum to 250 psi with dampened speed to 500 psi. Gauge hoses must be rated for use at up to 800 psi of pressure with a 4000 psi burst rating.
In addition to conventional charging procedures, the following requirements shall be followed.
· Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses or lines shall be as short as possible to minimize the amount of refrigerant contained in them.
· Cylinders shall be kept in an appropriate position according to the instructions.

· Ensure that the unit is earth grounded prior to charging the system with refrigerant.
· Label the system when charging is complete (if not already).
· Extreme care shall be taken not to overfill the unit.
Prior to recharging the system, it shall be pressuretested with the appropriate purging gas. The system shall be leak-tested on completion of charging but prior to commissioning. A follow up leak test shall be carried out prior to leaving the site.
· When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely.
· When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. Ensure that the correct number of cylinders for holding the total system charge is available. All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i. e. special cylinders for the recovery of refrigerant). Cylinders shall be complete with pressure-relief valve and associated shut-of f valves in good working order. Empty recovery cylinders are evacuated and, if possible, cooled before recovery
· The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of all appropriate refrigerants including, when applicable, flammable refrigerants. In addition, a set of calibrated weighing scales shall be available and in good working order. Hoses shall be complete with leak-free disconnect couplings and in good condition. Before using the recovery machine, check that it is in satisfactory working order, has been properly maintained and that any associated electrical components are sealed to prevent ignition in the event of a refrigerant release. Consult manufacturer if in doubt.
· The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant waste transfer note arranged. Do not mix refrigerants in recovery units and especially
· If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain that flammable refrigerant does not remain within the lubricant. The evacuation process shall be carried out prior to returning the compressor to the suppliers. Only electric heating to the compressor body shall be employed to accelerate this process. When oil is drained from a system, it shall be carried out safely.
NOTE - System charging is not recommended below 60°F (15°C). In temperatures below 60°F (15°C), the charge must be weighed into the system.
If weighing facilities are not available, or to check the charge, use the following procedure:

Page 24

1 - Make sure outdoor coil is clean. Attach gauge manifolds and operate unit at full CFM in cooling mode with economizer disabled until system stabilizes (approximately five minutes). Make sure all outdoor air dampers are closed.
2 - Compare the normal operating pressures to the pressures obtained from the gauges. Check unit components if there are significant differences.
3 - Measure the outdoor ambient temperature and the suction pressure. Refer to the charging curve to determine a target liquid temperature.
NOTE - Pressures are listed for sea level applications.
4 - Use the same thermometer to accurately measure the liquid temperature (in the outdoor section).
· If measured liquid temperature is higher than the target liquid temperature, add refrigerant to the system.

· If measured liquid temperature is lower than the target liquid temperature, recover some refrigerant from the system..
5 - Add or remove charge in increments. Allow the system to stabilize each time refrigerant is added or removed.
6 - Continue the process until measured liquid temperature agrees with the target liquid temperature. Do not go below the target liquid temperature when adjusting charge. Note that suction pressure can change as charge is adjusted.
Example: For the 092U no reheat unit, with a 95°F outdoor ambient and a measured suction pressure of 130psig, the target liquid temperature for Circuit 1 is 96°F. For a measured liquid temperature of 106°F, add charge in increments until measured liquid temperature agrees with the target liquid temperature.
NOTE - Reheat units are still in test phase. Charging curves and operating pressures are not yet available.

Circuit 1 Circuit 2

65°F

Suct (psig)

Disc (psig)

101

219

108

223

122

231

137

241

102

222

110

225

126

231

143

239

TABLE 5 581241-01 LGM/LCM092U No Reheat

75°F

85°F

95°F

Suct (psig)

Disc (psig)

Suct (psig)

Disc (psig)

Suct (psig)

Disc (psig)

105

253

108

291

111

335

112

256

116

295

119

338

127

264

132

302

136

345

143

273

148

311

153

354

105

257

107

297

110

341

113

260

115

300

118

344

129

267

131

307

134

352

146

275

149

315

152

360

105°F

Suct (psig)

Disc (psig)

113

383

122

386

139

393

157

402

113

390

120

393

137

400

155

409

115°F

Suct (psig)

Disc (psig)

114

437

123

440

142

446

160

455

115

443

123

446

140

454

158

462

120
Circuit 1 110 Circuit 2
1

Outdoor Temperature (°F) 115
105

100

Liquid Temperature (°F)

70 65

100

110

120

130

140

150

160

Suction Pressure (psig)

Page 25

Circuit 1 Circuit 2

65°F

Suct (psig)

Disc (psig)

104

218

112

222

129

228

148

235

100

217

108

220

126

227

145

232

TABLE 6 581242-01 LGM/LCM092U Reheat

75°F

85°F

95°F

Suct (psig)

Disc (psig)

Suct (psig)

Disc (psig)

Suct (psig)

Disc (psig)

105

253

106

292

107

337

113

256

115

296

116

340

131

263

133

302

135

346

150

269

153

308

155

351

101

250

102

289

104

331

110

254

111

293

113

336

128

261

130

300

132

343

147

267

149

306

151

349

105°F

Suct (psig)

Disc (psig)

109

386

118

389

138

394

159

400

106

379

115

383

134

391

154

397

115°F

Suct (psig)

Disc (psig)

111

440

120

443

141

448

162

453

108

430

118

435

137

443

157

450

Circuit 1

120

Circuit 2

110

100

110

120

130

140

Suction Pressure (psig)

115

105 95 85

65 Outdoor Temperature (°F)

150

160

Liquid Temperature (°F)

Page 26

Circuit 1 Circuit 2

65°F

Suct (psig)

Disc (psig)

105

224

111

226

126

234

141

244

106

225

113

227

129

234

148

243

TABLE 7 581243-01 LGM/LCM102U No Reheat

75°F

85°F

95°F

Suct (psig)

Disc (psig)

Suct (psig)

Disc (psig)

Suct (psig)

Disc (psig)

108

257

111

295

113

338

115

259

119

297

121

340

130

266

135

303

139

346

147

276

152

314

157

356

108

259

110

298

113

342

115

262

118

301

121

345

132

268

134

308

137

352

150

277

153

317

156

361

105°F

Suct (psig)

Disc (psig)

115

386

124

388

142

394

161

404

116

391

123

393

140

400

159

409

115°F

Suct (psig)

Disc (psig)

116

440

126

441

145

447

165

457

119

444

127

447

143

454

162

463

Liquid Temperature (°F)

120
Circuit 1 110 Circuit 2

100

110

Outdoor Temperature (°F) 115
105 95
85

75 65

120

130

140

150

160

Suction Pressure (psig)

Page 27

Circuit 1 Circuit 2

65°F

Suct (psig)

Disc (psig)

105

223

113

226

130

233

146

242

104

217

112

220

130

226

147

231

TABLE 8 581244-01 LGM/LCM102U Reheat

75°F

85°F

95°F

Suct (psig)

Disc (psig)

Suct (psig)

Disc (psig)

Suct (psig)

Disc (psig)

107

257

108

296

109

340

115

259

117

298

118

342

132

266

134

304

137

347

149

275

152

312

155

355

105

251

106

289

107

332

114

254

115

292

117

336

131

260

133

299

135

342

150

266

152

305

155

348

105°F

Suct (psig)

Disc (psig)

111

389

120

390

139

396

159

403

109

380

119

383

138

390

157

396

115°F

Suct (psig)

Disc (psig)

112

443

122

444

142

449

162

456

111

432

121

435

141

442

161

449

Circuit 1

120

Circuit 2

110

100

110

120

130

140

Sucon Pressure (psig)

115

105 95 85

65 Outdoor Temperature (°F)

150

160

Liquid Temperature (°F)

Page 28

Circuit 1 Circuit 2

65°F

Suct (psig)

Disc (psig)

101

230

108

233

123

243

138

256

228

107

231

123

239

141

248

TABLE 9 581245-01 LGM/LCM120U No Reheat

75°F

85°F

95°F

Suct (psig)

Disc (psig)

Suct (psig)

Disc (psig)

Suct (psig)

Disc (psig)

104

266

107

307

109

353

111

269

114

310

117

356

127

278

131

318

134

363

143

291

148

331

152

375

101

265

103

306

106

351

109

268

111

309

114

354

125

276

128

317

130

362

143

285

145

326

148

371

105°F

Suct (psig)

Disc (psig)

111

404

119

406

137

413

156

425

108

400

116

403

133

411

151

421

115°F

Suct (psig)

Disc (psig)

113

460

122

462

140

469

160

479

111

453

119

456

136

465

154

474

120

110 Circuit 1 Circuit 2
100

100

110

120

130

Suction Pressure (psig)

Outdoor Temperature (°F) 115
105 95 85 75 65

140

150

160

Liquid Temperature (°F)

Page 29

Circuit 1 Circuit 2

65°F

Suct (psig)

Disc (psig)

103

231

110

234

126

242

141

251

226

106

229

123

236

140

241

TABLE 10 581246-01 LGM/LCM120U No Reheat

75°F

85°F

95°F

Suct (psig)

Disc (psig)

Suct (psig)

Disc (psig)

Suct (psig)

Disc (psig)

103

265

104

304

105

347

111

268

113

307

114

350

128

275

130

314

133

357

144

284

148

322

151

365

259

101

297

102

339

107

263

109

301

111

343

124

269

126

308

129

351

142

276

145

315

147

358

105°F

Suct (psig)

Disc (psig)

107

396

116

398

135

405

155

413

104

387

113

391

131

399

150

407

115°F

Suct (psig)

Disc (psig)

108

449

118

451

139

458

159

466

106

439

115

443

134

452

153

460

Circuit 1

120

Circuit 2

110

100

105

115

125

135

Suction Pressure (psig)

115

105 95 85

65 Outdoor Temperature (°F)

145

155

Liquid Temperature (°F)

Page 30

Circuit 1 Circuit 2

65°F

Suct (psig)

Disc (psig)

244

106

248

120

257

135

267

250

101

254

115

263

131

273

TABLE 11 581247-01 LGM/LCM150U No Reheat

75°F

85°F

95°F

Suct (psig)

Disc (psig)

Suct (psig)

Disc (psig)

Suct (psig)

Disc (psig)

102

284

104

328

106

374

109

288

111

331

114

377

123

296

127

339

130

385

139

306

143

349

148

395

291

337

100

389

103

294

105

340

107

391

117

303

120

347

122

397

133

312

136

356

139

405

105°F

Suct (psig)

Disc (psig)

108

425

116

428

133

435

152

444

102

445

110

447

125

452

142

459

115°F

Suct (psig)

Disc (psig)

110

479

119

481

136

488

155

497

105

506

113

507

129

512

146

518

120
Circuit 1 110 Circuit 2
100

100

Outdoor Temperature (°F) 115
105 95 85 75 65

110

120

130

140

150

160

Suction Pressure (psig)

Liquid Temperature (°F)

Page 31

Circuit 1 Circuit 2

65°F

Suct (psig)

Disc (psig)

100

253

108

252

124

260

141

278

250

100

254

115

264

130

274

TABLE 12 581248-01 LGM/LCM150U No Reheat

75°F

85°F

95°F

Suct (psig)

Disc (psig)

Suct (psig)

Disc (psig)

Suct (psig)

Disc (psig)

102

296

104

344

106

399

110

293

112

340

115

393

126

297

129

340

133

389

144

312

148

351

152

397

290

337

392

102

293

104

340

106

394

117

301

120

346

122

398

133

310

136

353

139

403

105°F

Suct (psig)

Disc (psig)

108

460

117

452

136

444

156

448

101

455

109

456

125

458

142

461

115°F

Suct (psig)

Disc (psig)

111

526

120

516

140

505

160

505

103

524

111

524

128

525

145

526

120

Circuit 1

Circuit 2

110

Outdoor Temperature (°F) 115
105

100 90 80 70 60 90

95 85

100

110

120

130

140

150

160

170

Suction Pressure (psig)

Liquid Temperature (°F)

Page 32

F-Compressor Controls
See unit wiring diagram to determine which controls are used on each unit.
1 - High Pressure Switch (S4, S7)
The compressor circuit is protected by a high pressure switch which opens at 640 psig + 10 psig (4413 kPa + 70 kPa) and automatically resets at 475 psig + 20 psig (3275kPa + 138 kPa). 2 - Low Pressure Switch (S87, S88)
The compressor circuit is protected by a loss of charge switch. Switch opens at 40 psig + 5 psig (276 + 34 kPa) and automatically resets at 90 psig + 5 psig (621 kPa + 34 kPa). 3 - Crankcase Heater (HR1, HR2)
Compressors have belly band compressor oil heaters which must be on 24 hours before running compressors. Energize by setting thermostat so that there is no cooling demand, to prevent compressor from cycling, and apply power to unit. 4 - Thermal Protector (S5)
The compressors are thermally protected with automatic temperature switches. 5 - Prognostics and Diagnostics Sensors (RT42RT49) Eight thermistors are located on specific points in the refrigeration circuit. The thermistors pro vide constant temperature feedback to the Unit Controller to protect the compressor. Thermistors take the place of the freezestat and low ambient pressure switch.

Prognostic & Diagnostic Sensors
Units are equipped with eight factory-installed thermistors (RT42 - RT49) located on different points on the refrigerant circuit.
The thermistors provide the Unit Controller with constant temperature readings of four specific locations on the refrigeration circuit. These temperatures are used as feedback in certain modes of unit operation. In addition, the Unit Controller uses these temperatures to initiate alarms such as loss of condenser or evaporator airflow and loss of charge.
Each thermistor must be specifically placed for proper unit operation and to initiate valid alarms. See TABLE 13 for proper locations.

TABLE 13 THERMISTOR LOCATION

RT42, 43, 46, 47

RT44, 45, 48, 49

FIGURE 28

FIGURE 29

Page 33

22J07 RT42 YELLOW STG 1
22J07 RT43 BLUE STG 2

LGM/LCM092, 102, 120, 150 EVAPORATOR COIL RT42, 43, 46, 47

22J06 RT47 BLUE STG 2

22J06 RT46 YELLOW STG 1

RT46 RT47
DISTRIBUTOR TUBE

TXV BULB

WIRE TIE

RT42 RT43

FIGURE 28

Page 34

23V50 RT49 BLUE STG 2

LGM/LCM092, 102, 120, 150 CONDENSER COIL RT44, 45, 48, 49
23V50 RT48 YELLOW STG 1

22J09 RT45 BLUE STG 2
22J09 RT44 YELLOW STG 1

FIGURE 29

Page 35

RDS Sensors
Units are equipped with factory-installed RDS Sensors located on different points on the unit. The RDS sensors provide the Unit Controller with continuous readings for leaked refrigerant concentration levels and sensor health status (Good or Fault). These readings are used to modify unit operation to disperse the leaked refrigerant and to remove possible ignition sources. In addition, the Unit Controller uses these readings to initiate alarms to alert the operator of a refrigerant leak or faulty sensor(s).
Each sensor must be specifically placed for proper unit operation and to initiate valid alarms. To identify sensor locations see TABLE 14 and FIGURE 30.

Model LGM/LCM092-150

TABLE 14

RDS Sensor Figures

Qty.

Type

1 sensor INDOOR SENSOR

Figure FIGURE 30

LGT/LCT 092-150 INDOOR COMPARTMENT RDS SENSOR

FIGURE 30 Page 36

Gas Heat Start-Up (Gas Units)
FOUR YOUR SAFETY READ BEFORE LIGHTING
WARNING
Electric shock hazard. Can cause injury or death. Do not use this unit if any part has been under water. Immediately call a qualified service technician to inspect the unit and to replace any part of the control system and any gas control which has been under water.
WARNING
Danger of explosion. Can cause injury or product or property damage. If over heating occurs or if gas supply fails to shut off, shut off the manual gas valve to the appliance before shutting off electrical supply.
WARNING
Electric shock hazard. Can cause injury or death. Before attempting to perform any service or maintenance, turn the electrical power to unit OFF at disconnect switch(es). Unit may have multiple power supplies.

This unit is equipped with an automatic spark ignition system. There is no pilot. In case of a safety shutdown, move thermostat switch to OFF and return the thermostat switch to HEAT to reset ignition control.
A-Placing Unit In Operation

WARNING
Danger of explosion and fire. Can cause injury or product or property damage. You must follow these instructions exactly.
Gas Valve Operation for Honeywell VR8205Q/VR8305Q and White Rodgers 36H54 (FIGURE 31 and FIGURE 32).

WHITE RODGERS 36H54 GAS VALVE

INLET

Two-Stage

PRESSURE TAP

MANIFOLD PRESSURE

TAP

HIGH FIRE ADJUSTMENT
LOW FIRE ADJUSTMENT

WARNING
SMOKE POTENTIAL
The heat exchanger in this unit could be a source of smoke on initial firing. Take precautions with respect to building occupants and property. Vent initial supply air outside when possible.
BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.
Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not push in or turn by hand, do not try to repair it, call a qualified service technician. Force or attempted repair may result in a fire or explosion.
WARNING
Danger of explosion. Can cause injury or death. Do not attempt to light manually. Unit has a direct spark ignition system.

GAS VALVE SWITCH SHOWN IN ON POSITION.
FIGURE 31

HONEYWELL VR8205Q/VR8305Q GAS VALVE

HIGH FIRE ADJUSTMENT

LOW FIRE ADJUSTMENT

MANIFOLD PRESSURE
TAP

INLET PRESSURE
TAP
GAS VALVE KNOB IS SHOWN IN OFF POSITION.
FIGURE 32 1 - Set thermostat to lowest setting. 2 - Turn off all electrical power to appliance. 3 - This appliance is equipped with an ignition device
which automatically lights the burner. Do not try to light the burner by hand. 4 - Open or remove the heat section access panel.

Page 37

5 - Turn gas valve switch to OFF. See FIGURE 31. On Honeywell VR8305Q gas valves, turn the knob on the gas valve clockwise to OFF. Do not force. See figure 27.
6 - Wait five (5) minutes to clear out any gas. If you then smell gas, STOP! Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions. If you do not smell gas, go to the next step.
7 - Turn gas valve switch to ON. See FIGURE 31. On Honeywell VR8305Q gas valves, turn the knob on the gas valve counterclockwise to ON. Do not force. See FIGURE 32.
8 - Close or replace the heat section access panel.
9 - Turn on all electrical power to appliance.
10 - Set thermostat to desired setting.
11 - The ignition sequence will start.
12 - If the appliance does not light the first time (gas line not fully purged), it will attempt up to two more ignitions before locking out.
13 - If lockout occurs, repeat steps 1 through 10.
14 - If the appliance will not operate, follow the instructions "Turning Off Gas to Appliance" and call your service technician or gas supplier.
Turning Off Gas to Unit 1 - If using an electromechanical thermostat, set to the lowest setting.
2 - Before performing any service, turn off all electrical power to the appliance.
3 - Open or remove the heat section access panel.
4 - Turn gas valve switch to OFF. On Honeywell VR8305Q gas valves, turn the knob on the gas valve clockwise to OFF. Do not force.
5 - Close or replace the heat section access panel.
WARNING
Danger of explosion. Can cause injury or death. Do not attempt to light manually. Unit has a direct spark ignition system.
Heating Operation and Adjustments
(Gas Units)
A-Heating Sequence of Operation 1 - On a heating demand the combustion air inducer starts immediately.
2 - Combustion air pressure switch proves inducer operation. After a 30-second pre-purge, power is allowed to ignition control. Switch is factory set and requires no adjustment.
3 - Spark ignitor energizes and gas valve solenoid opens.
4 - Spark ignites gas, ignition sensor proves the flame

and combustion continues. 5 - If flame is not detected after first ignition trial,
ignition control will repeat steps 3 and 4 two more times before locking out the gas valve. 6 - For troubleshooting purposes, an ignition attempt after lock out may be re-established manually. Move thermostat to OFF and return thermostat switch to HEAT position.
B-Limit Controls
Limit controls are factory-set and are not adjustable. The primary limit is located on the blower deck to the right of the blower housing.
C-Heating Adjustment
Main burners are factory-set and do not require adjustment.
The following manifold pressures are listed on the gas valve.
Natural Gas Units - Low Fire - 1.6" w.c. (not adjustable) Natural Gas Units - High Fire - 3.7" w.c. LP Gas Units - Low Fire - 5.5" w.c. (not adjustable) LP Gas Units - High Fire - 10.5" w.c.
Electric Heat Start-Up (Cooling Units)
Factory or Field-Installed Option
Electric heat will stage on and cycle with thermostat demand. Number of stages of electric heat will vary depending on electric heat assembly. See electric heat wiring diagram on unit for sequence of operation.

Page 38

Cooling Operation
This is a summary of cooling operation. Refer to the sequence of operation provided in the Engineering Handbook or Service Manual for more detail. NOTE - Free cooling is locked-out during reheat operation. Refer to hot gas reheat start-up and operation section for details.
A-Two-Stage Thermostat 1 - Economizer With Outdoor Air Suitable
Y1 Demand Compressors Off Blower Cooling Low Dampers modulate
Y1 Demand + Dampers Fully Open for 5 Minutes Compressors Off Blower Cooling High Dampers Modulate
Y2 Demand Compressors Modulate Blower Cooling High Dampers Maximum Open
2 - No Economizer or Outdoor Air Not Suitable
Y1 Demand Compressors Modulate Blower Cooling Low Dampers Minimum Position
Y2 Demand Compressors Modulate Blower Cooling High Dampers Minimum Position

B-Three-Stage Thermostat 1 - Economizer With Outdoor Air Suitable
Y1 Demand Compressors Off Blower Cooling Low
Y1 Demand + Dampers Fully Open for 5 Minutes Compressors Off Blower Cooling Intermediate Dampers Modulate
Y2 Demand Compressors Modulate Blower Cooling Intermediate Dampers Maximum Open
Y3 Demand Compressors Modulate Blower Cooling High Dampers Maximum Open
C-Room Sensor 1 - Economizer With Outdoor Air Suitable
Compressors Off Blower Modulates Dampers modulate NOTE - If dampers are at maximum open for five minutes, compressors are energized and the blower modulates. 2 - No Economizer or Outdoor Air Not Suitable
Compressors Modulate Blower Modulates Dampers Minimum Position

Page 39

Modulating Hot Gas Reheat Start-Up and Operation
General
Hot gas reheat units provide a dehumidifying mode of operation. These units contain a reheat coil adjacent to and downstream of the evaporator coil. Reheat coil solenoid valve, L14, routes hot discharge gas from the compressor to the reheat coil. Return air pulled across the evaporator coil is cooled and dehumidified; the reheat coil adds heat to supply air. See FIGURE 33 for reheat refrigerant routing and FIGURE 34 for standard refrigerant routing.
L14 Reheat Coil Solenoid Valve
When Unit Controller input (Unit Controller J298-5 or J2998) indicates room conditions require dehumidification, L14 reheat valve is energized (Unit Controller J394-1) and refrigerant is routed to the reheat coil.
Reheat Setpoint
Reheat is factory-set to energize when indoor relative humidity rises above 60% (default).The reheat setpoint can be adjusted by changing mobile service app Settings - Control menu. A setting of 100% will operate reheat from an energy management system digital output.

The reheat setpoint can also be adjusted using an optional Network Control Panel (NCP). Reheat will terminate when the indoor relative humidity falls 3% (57% default) or the digital output de-energizes. The reheat deadband can be adjusted at Settings - Control menu.
Check-Out
Test hot gas reheat operation using the following procedure.
1 - Make sure reheat is wired as shown in wiring section.
2 - Make sure unit is in local thermostat mode.
3 - Select:
RTU MENU > SERVICE > COMPONENT TEST >
DEHUMIDIFICATION The blower and compressor 1 (reheat) should be operating. DEHUMIDIFIER 1 ON will appear.
4 - Press STOP to discontinue the testing mode. Compressor 1 (reheat) and blower should de-energize.

REHEAT MODE REFRIGERANT ROUTING

FIGURE 33 Page 40

COOLING MODE REFRIGERANT ROUTING

FIGURE 34

Default Reheat Operation

TABLE 15 Reheat Operation - Two Cooling Stages - Default

T'stat and Humidity Demands

Operation

Reheat Only

Compressor 1 Reheat

Reheat & Y1

Compressor 1 & 2 Enhanced Dehumidification at Low CFM

Reheat & Y1 & Y2

Compressor 1 & 2 Enhanced Dehumidification at High CFM

*If there is no reheat demand and outdoor air is suitable, free cooling will operate.

**If there is no reheat demand and outdoor air is suitable, free cooling and compressor 1 will operate.

Preventative Maintenance / Repair
IMPORTANT MAINTENANCE / REPAIR SAFETY INSTRUCTIONS
Prior to beginning work on systems containing FLAMMABLE REFRIGERANTS, safety checks are necessary to ensure that the risk of ignition is minimized.
Work shall be undertaken under a controlled procedure to minimize the risk of a flammable gas or vapor being present while the work is being performed.
All maintenance staff and others working in the local area shall be instructed on the nature of work being carried out. Work in confined spaces shall be avoided.
The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware of potentially toxic or flammable atmospheres.

Ensure that the leak detection equipment being used is suitable for use with all applicable refrigerants, i.e. nonsparking, adequately sealed or intrinsically safe.
If any hot work is to be conducted on the refrigerating equipment or any associated parts, appropriate fire extinguishing equipment shall be available to hand. Have a dry powder or CO2 fire extinguisher adjacent to the charging area.
No person carrying out work in relation to a REFRIGERATING SYSTEM which involves exposing any pipe work shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation, repairing, removing and disposal, during which refrigerant can possibly be released to the surrounding space. Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable hazards or ignition risks. "No Smoking" signs shall be displayed.
Where electrical components are being changed, they shall be fit for the purpose and to the correct specification. At all times, the manufacturer's maintenance and service guidelines shall be followed. If in doubt, consult the manufacturer's technical department for assistance.
The following checks shall be applied to installations using FLAMMABLE REFRIGERANTS:
the actual REFRIGERANT CHARGE is in accordance with the room size within which the refrigerant
containing parts are installed;

Page 41

the ventilation machinery and outlets are operating adequately and are not obstructed;
if an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of refrigerant;
marking to the equipment continues to be visible and legible. Markings and signs that are illegible shall be corrected;
refrigerating pipe or components are installed in a position where they are unlikely to be exposed to any substance which may corrode refrigerant containing components, unless the components are constructed of materials which are inherently resistant to being corroded or are suitably protected against being so corroded.
During repairs to sealed electrical components, the components shall be replaced. Replacement parts shall be in accordance with the manufacturer's specifications.
During repairs to intrinsically safe components, the components must be replaced. Replace components only with parts specified by the manufacturer. Other parts may result in the ignition of refrigerant in the atmosphere from a leak.
The unit should be inspected once a year by a qualified service technician.
CAUTION
Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

A-Filters
Units are equipped with four 20 X 25 X 2' filters. Filters should be checked monthly and replaced when necessary with filters of like kind and size. Take note of air flow direction marking on filter frame when reinstalling filters. See FIGURE 35. NOTE - Filters must be U.L.C. certified or equivalent for use in Canada.
B-Lubrication
All motors are lubricated at the factory. No further lubrication is required.
C-Burners (Gas Units)
Periodically examine burner flames for proper appearance during the heating season. Before each heating season examine the burners for any deposits or blockage which may have occurred.
Clean burners as follows: 1 - Turn off both electrical power and gas supply to unit. 2 - Remove burner compartment access panel.
3 - Remove screws securing burner assembly to burner support and remove assembly. See figure 31. Clean as necessary.
4 - Locate the ignitor under the left burners. Check ignitor spark gap with appropriately sized twist drills or feeler gauges. See FIGURE 37.

Page 42

REMOVE FILTERS

PULL TO REMOVE FILTERS

GAS VALV
E

FIGURE 35
BURNER BOX ASSEMBLY 240KBTUH SHOWN BURNER ASSEMBLY SECURED WITH MULTIPLE SCREWS

GAS MANIFOLD
FIGURE 36 IGNITOR
SPARK GAP SHOULD BE 1/8"
(3mm)
FIGURE 37

5 - Check the alignment of the ignitor and the sensor as shown in FIGURE 37 and TABLE 16.

TABLE 16

Dimensions

Unit Btuh Input

Length - in. (mm)

Ignitor

Sensor

130K

7-3/4 (197)

11 (279)

180K

5 (127)

5-1/2 (140)

240K

2-1/4 (57)

2-3/4 (70)

6 - Replace burners and screws securing burner.

7 - Replace access panel.

8 - Restore electrical power and gas supply. Follow lighting instructions attached to unit and use inspection port in access panel to check flame.

WARNING

Danger of explosion. Can cause injury or death. Do not overtighten main burner mounting screws. Snug tighten only.

D-Combustion Air Inducer (Gas Units)

A combustion air proving switch checks combustion air inducer operation before allowing power to the gas controller. Gas controller will not operate if inducer is obstructed.

Under normal operating conditions, the combustion air inducer wheel should be checked and cleaned prior to the heating season. However, it should be examined periodically during the heating season to establish an ideal cleaning schedule. With power supply disconnected, the condition of the inducer wheel can be determined by looking through the vent opening.

Clean combustion air inducer as follows:
1 - Shut off power supply and gas to unit.
2 - Disconnect pressure switch air tubing combustion air inducer port.

from

3 - Remove and retain screws securing combustion air inducer to flue box. Remove vent connector. See FIGURE 39.

4 - Clean inducer wheel blades with a small brush and
wipe off any dust from housing. Clean accumulated dust from front of flue box cover.

5 - Return combustion air inducer motor and vent connector to original location and secure with retained screws. It is recommended that the combustion air inducer gasket be replaced during reassembly.

6 - Clean combustion air inlet louvers on heat access panel using a small brush.

Page 43

IG NIT O R
A B C

IGNITOR AND SENSOR POSITION TOP VIEW

S E NS OR
A B C

S IDE VIE W IGNITOR
Gas Flow

S IDE VIE W S E NS OR
Gas Flow

1-3/8" (35mm)

1-3/4" (45mm)

13/16" (21mm)

BURNER BOX FIGURE 38

3/8" (10mm)

HEAT EXCHANGER ASSEMBLY
HEAT EXCHANGER
TUBE
COMBUSTION AIR INDUCER

VENT CONNECTOR

GAS VALVE BURNER

FIGURE 39

E-Flue Passageway and Flue Box (Gas Units)
1 - Remove combustion air inducer assembly as described in section D.
2 - Remove flue box cover. Clean with a wire brush as required.

3 - Clean tubes with a wire brush.
4 - Reassemble the unit. The flue box cover gasket and combustion air inducer gasket should also be replaced during reassembly.

F-Evaporator Coil

Inspect and clean coil at beginning of each cooling season. Clean using mild detergent or commercial coil cleaner. Flush coil and condensate drain with water taking care not to get insulation, filters and return air ducts wet.

G-Supply Air Blower Wheel Annually inspect supply air blower wheel for accumulated dirt or dust. Turn off power before attempting to remove access panel or to clean blower wheel. H-Condenser Coil Clean condenser coil annually with detergent or commercial coil cleaner and inspect monthly during the cooling season. Access panels are provided on front and back of condenser section. J-Needlepoint Bipolar Ionizer The ionizer was designed for low maintenance. The device should be checked semi-annually to confirm the brushes are clean for maximum output. The ionizer is located on the blower deck. See FIGURE 40.
BIPOLAR IONIZER IONIZER
ASSEMBLY
FIGURE 40

Page 44

UVC ASSEMBLY
UVC LAMP UVC ASSEMBLY

DOOR SWITCH

ASSEMBLY SECURED WITH 3 SCREWS

FIGURE 41

K-UVC Light
When field-installed, use only UVC Light Kit assembly 106882-01 (21A93) with this appliance.
Factory-Installed UVC Light
When the UVC light is factory installed, the lamp is shipped in a foam sleeve. The lamp is attached to the UVC light assembly on the blower deck. See FIGURE 41. Remove the lamp and install into the UVC light assembly as shown in steps 2 through 11.
Annual Lamp Replacement
WARNING
Personal Burn Hazard Personal injury may result from hot lamps. During replacement, allow lamp to cool for 10 minutes be fore removing lamp from fixture.

The lamp should be replaced every 12 months, as UVC energy production diminishes over time.
1 - Obtain replacement lamp 101087-01 for your germicidal light model.
2 - Disconnect power to the rooftop unit before servicing the UVC kit.Open the blower access door.
3 - Remove the screw in wire tie from the UVC assembly and disconnect the 4-pin connector from the lamp end.
4 - Remove and retain the (3) screws securing the UVC assembly. Carefully slide the complete UVC assembly out through the blower access door. See FIGURE 41.

Page 45

INSTALL LAMP IN HOLDER CLIPS
UVC Sub-Assembly

BANDS (see Note below)
DETAIL A

SHEET METAL END STOP

LAMP FLANGE

4-PIN CONNECTOR

LAMP

HOLDER CLIPS (2)

NOTE - The bands around the lamp should be evenly spaced as shown in the diagram .

FIGURE 42

5 - Allow 10 minutes before touching the lamps. Then,

carefully remove the old lamp from the lamp holder clips.

6 - Wear cotton gloves or use a cotton cloth when handling the new lamp. Place the new lamp in the holder clips of the UVC assembly. Verify that the lamp flange at the connector end is sandwiched between the lamp holder clip and the sheet-metal end stop (see FIGURE 42).
7 - Carefully place the UVC assembly on the blower deck. Line up the mounting holes on the UVC assembly with the mounting holes on the blower deck See FIGURE 41. Use the retained screws provided to attach the UVC assembly in place.

8 - Close the blower access door.

9 - Reconnect power to the rooftop unit.
10 - Open the filter access door and look through the view port in the triangular sheet-metal panel to verify that the UVC light is on.

If UVC lamp does not come on:
1 - Check Power Wiring: Disconnect 1/4" QC (quick connects) of the UVC cable near the UVC assembly. With Power ON, use multimeter to test 110-230V at the 1/4"QC quick connects from the control panel.

2 - Check Lamp: Carefully remove the UVC assembly out of the rooftop unit. Use multimeter to test for continuity across each pair of pins at each end of

the lamp.
3 - Check Lamp Installation: Make sure that lamp's pins snap properly into the lamp holder.
LED(s) not illuminated
Power status LED not lit--Check that the lamp unit is connected to the proper power source and is wired correctly.
Lamp status LED(s) not lit 1 - Check that lamp 4-pin connectors are properly engaged.
2 - Ohm-check across the lamp pins to check for continuity of lamp filaments (see FIGURE 44).
Troubleshooting charts are provided to aid in determining the cause of any problems encountered (FIGURE 43 and FIGURE 44).
Lamp Disposal
Hg-LAMP Contains Mercury - Manage in accordance with local, state and federal disposal laws. Refer to www. lamprecycle.org or call 800-953-6669.
Proper Clean-up Technique in Case of Lamp Breakage
Wear protective gloves, eye wear and mask.
Sweep the broken glass and debris into a plastic bag, seal the bag, and dispose of properly. Contact your local waste management office for proper disposal.
Do not use a vacuum cleaner. Do not incinerate.
Maintenance · For all maintenance, contact a qualified HVAC tech-
nician. · Read the maintenance instructions before opening
unit panels. · Unintended use of the unit or damage to the unit
housing may result in the escape of dangerous UVC radiation. UVC radiation may, even in small doses, cause harm to the eyes and skin. · Do not operate units that are obviously damaged. · Do not discard the triangular UVC light shield or any barriers with an ultraviolet radiation symbol. · Do not override the door interlock switch that interrupts power to the UVC light. Do not operate the UVC light outside of the unit.
DANGER
Ultraviolet (UVC) Radiation hazard. Any exposure will cause significant eye damage and may cause skin damage. DO NOT look into UVC light source. Access panels must be in place during appliance operation.

Page 46

UVC LIGHT TROUBLESHOOTING - POWER

UVC LAMP NOT OPERATING

POWER LED

LIT?

YES

CHECK LAMP LEDS

DONE

YES

NO LAMP LEDS
LIT?

USE MULTIMETER TO TEST 110-230V AT
BALLAST INPUT LEADS

CORRECT VOLTAGE PRESENT? NO
YES
CHECK POWER
LEDS

FIRST TURN THE POWER OFF

;

CHECK THE WIRING

TURN POWER BACK ON

POWER LED YES LIT NOW?
NO GO TO LAMP LED TROUBLESHOOTING
FIGURE 43

REPLACE BALLAST

LAMP LEDS NOT LIT

UVC LIGHT TROUBLESHOOTING - LAMP

FIRST TURN THE POWER OFF. BE SURE THAT THE 4-PIN
CONNECTORS FOR ALL THE LAMPS ARE PROPERLY ENGAGE.D

TURN POWER ON; CHECK LAMP LEDS

DETAIL A

CALL LENNOX TECH SUPPORT 1-800-453-6669
NO

DONE

LAMPS BLACK ON
ENDS?
YES NO

YES LAMP LEDS LIT?
CHECK FOR CONTINUITY

TWO PAIR, PIN TO PIN ON EACH PAIR (SEE DETAIL A)
CONTINUITY YES PRESENT?
NO
REPLACE LAMPS; TURN POWER ON

LAMP LEDS

YES

LIT?

BANDS

AROUND LAMP

YES

INTACT?

BANDS

NOTE - CHECK FOR CONTINUITY ON THE SETS OF PINS CLOSEST TOGETHER
CHECK FOR CONTINUITY

DETAIL B

FIGURE 44

Page 47

M-Replacement Fuses
See the following tables for the proper replacement fuse sizes.

ELECTRIC HEAT REPLACEMENT FUSES

Electric Heat

Rating Qty.
Amp Volt

1 E1EHO075BP1Y 7.5 kW - Y Volt 3

250

2 E1EHO075BP1G 7.5 kW - G Volt 3

600

3 E1EHO075BP1J 7.5 kW- J Volt

600

4 E1EHO150BP1Y 15 kW - Y Volt

250

5 E1EHO150BP1G 15 kW -G Volt

600

6 E1EHO150BP1J 15 KW - J Volt

600

E1EHO225BP1Y 22.5 KW - Y Volt 3 EA.

50 & 25

250

8 E1EHO225BP1G 22.5 KW - G Volt 3 EA. 25 & 15 600

9 E1EHO225BP1J 22.5 KW - J Volt 3 EA. 20 & 10 600

10 E1EHO300BP1Y 30 KW - Y Volt

250

11 E1EHO300BP1G 30 KW - G Volt 6

600

12 E1EHO300BP1J 30 KW -J Volt

600

13 E1EHO450BP1Y 45 KW - Y Volt 3/6

50 & 60

250

14 E1EHO450BP1G 45 KW - G Volt 3 EA. 25 & 50 600

15 E1EHO450BP1J 45 KW - J Volt 3 EA. 20 & 40 600

16 E1EHO600BP1Y 60 KW - Y Volt 12

250

17 E1EHO600BP1G 60 KW - G Volt 6

600

18 E1EHO600BP1J 60 KW - J Volt

600

Page 48

TABLE 17

LGM 092 & 102

Unit Voltage

208/230V - 3 Ph

Power Exhaust Option

W / P.E.

W / O P.E.

Diagram Key

Class

Blower HP

F10

3.75

F57

3.75

F30

3.75

F31

3.75

F61²

3.75

CB10³

3.75

² Fuse F61 is only used on units with SCCR installed. ³ Units using Circuit Breakers will use CB10 option.

TABLE 18

LGM 120

Unit Voltage

208/230V - 3 Ph

Power Exhaust Option

W / P.E.

W / O P.E.

Diagram Key

Class

Blower HP

F10

3.75

F57

3.75

F30

3.75

F31

3.75

F61²

3.75

CB10³

3.75

² Fuse F61 is only used on units with SCCR installed. ³ Units using Circuit Breakers will use CB10 option.

TABLE 19

LGM 150

Unit Voltage

208/230V - 3 Ph

Power Exhaust Option

W / P.E.

W / O P.E.

Diagram Key

Class

Blower HP

F10

3.75

F57

3.75

F30

3.75

F31

3.75

F61²

3.75

CB10³

3.75

² Fuse F61 is only used on units with SCCR installed. ³ Units using Circuit Breakers will use CB10 option.

460V - 3Ph

W / P.E.

W / O P.E.

Amps

7.5

460V - 3Ph

W / P.E.

W / O P.E.

Amps

7.5

460V - 3Ph

W / P.E.

W / O P.E.

Amps

7.5

575V - 3Ph

W / P.E.

W / O P.E.

575V - 3Ph

W / P.E.

W / O P.E.

575V - 3Ph

W / P.E.

W / O P.E.

Page 49

Electric Heat Size Unit Voltage

Power Exhaust Option

Diagram Key
F4
F10 F30 F31 F57

Class

Blower HP

RK or K¹ or J

3.75

208/230V - 3 Ph
W/ W/O P.E. P.E.

0 KW
460V - 3 Ph
W/ W/O P.E. P.E.

25 25

12 12

15 15

7.5 7.5

TABLE 20
LCM 092 & 102

575V - 3 Ph

W/ W/O

P.E.

208V - 3 Ph

W/ W/O

P.E.

Amps

F61²

CB10³

3.75

25 25

¹ When SCCR is installed, F4 fuse is Class J. ² Fuse F61 is only used on units with SCCR installed.
³ Units using Circuit Breakers will use CB10 option.

Electric Heat Size

TABLE 21
LCM 092 & 102 Continued 15 KW

7.5 KW

240V - 3 Ph 460V - 3 Ph

W/ W/O W/ W/O

P.E.

575V - 3 Ph
W/ W/O P.E. P.E.

25 20

12 12

7.5 7.5

25 20

22.5 KW

Unit Voltage

208V - 3 Ph 240V - 3 Ph 460V - 3 Ph 575V - 3 Ph 208V - 3 Ph 240V - 3 Ph 460V - 3 Ph 575V - 3 Ph

Power Exhaust Option

W/ W/O W/ P.E. P.E. P.E.

W / O P.E.

W/ W/O W/ P.E. P.E. P.E.

W / O P.E.

W / P.E.

W / O P.E.

W / P.E.

W / O P.E.

W / P.E.

W / O P.E.

W/ W/O P.E. P.E.

Diagram Key

Class

Blower HP

Amps

RK F4 or K¹ 3.75 50 50 50 50 25 25 25 20 50 50 50 50 25 25 25 20
or J

F10 CC 3.75 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12

F30

CC 3.75 10 10 10 10

10 10

F31

CC 3.75 15 15 15 15 15 15

15 15 15 15

F57 CC 3.75 -

7.5 7.5 4

F61²

3.75 60 50 60 60 30 30 25 25 80 70 90 80 45 40 35 35

CB10³ -

3.75 60 50 60 60 30 30 25 25 80 70 90 80 45 40 35 35

¹ When SCCR is installed, F4 fuse is Class J. ² Fuse F61 is only used on units with SCCR installed.
³ Units using Circuit Breakers will use CB10 option.

Page 50

Electric Heat Size

TABLE 22
LCM 092 & 102 Continued 30 KW

45 KW

Unit Voltage

208V - 3 Ph 240V - 3 Ph 460V - 3 Ph 575V - 3 Ph 208V - 3 Ph 240V - 3 Ph 460V - 3 Ph 575V - 3 Ph

Power Exhaust Option

W/ W/O W/ P.E. P.E. P.E.

W / O P.E.

W / P.E.

Diagram Key

Class

Blower HP

RK F4 or K¹ 3.75 50 50 50 50 25
or J

F10 CC 3.75 12 12 12 12 12

F30

CC 3.75 10 10 10 10

F31 CC 3.75 15 15 15 15 15

F57 CC 3.75 -

7.5

F61²

3.75 100 90 110 110 60

CB10³ -

3.75 100 90 110 110 60

¹ When SCCR is installed, F4 fuse is Class J. ² Fuse F61 is only used on units with SCCR installed.
³ Units using Circuit Breakers will use CB10 option.

Electric Heat Size

0 KW

Unit Voltage

208/230V - 3 Ph

460V - 3 Ph

Power Exhaust Option

W/ W/O W/ W/O

P.E.

P.E. P.E.

Diagram Key

Class

Blower HP

RK or K¹ or J

3.75

30 30

F10

3.75

12 12

F30

3.75

F31

3.75

15 15

F57

3.75

7.5 7.5

F61²

3.75

CB10³

3.75

30 30

¹ When SCCR is installed, F4 fuse is Class J. ² Fuse F61 is only used on units with SCCR installed.
³ Units using Circuit Breakers will use CB10 option.

W/O W/ W/O W/ W/O W/ W/O W/ W/O W/ W/O P.E. P.E. P.E. P.E. P.E. P.E. P.E. P.E. P.E. P.E. P.E.
Amps

25 25 20 50 50 50 50 25 25 25 20

12 12 12 12 12 12 12 12 12 12 12

10 10

15 15 15 15

7.5 4

7.5 7.5 4

60 45 45 150 150 150 150 80 80 60 60

TABLE 23
LCM 120

575V - 3 Ph

W/ W/O

P.E.

208V - 3 Ph

W/ W/O

P.E.

15 KW

240V - 3 Ph 460V - 3 Ph

W/ W/O W/ W/O

P.E.

575V - 3 Ph
W/ W/O P.E. P.E.

Amps

7.5 7.5

Page 51

Electric Heat Size

TABLE 24
LCM 120 Continued 22.5 KW

30 KW

Unit Voltage

208V - 3 Ph 240V - 3 Ph 460V - 3 Ph 575V - 3 Ph 208V - 3 Ph 240V - 3 Ph 460V - 3 Ph 575V - 3 Ph

Power Exhaust Option

W/ W/O W/ P.E. P.E. P.E.

W / O P.E.

W/ W/O W/ P.E. P.E. P.E.

W / O P.E.

W / P.E.

W / O P.E.

W / P.E.

W / O P.E.

W / P.E.

W / O P.E.

W/ W/O P.E. P.E.

Diagram Key

Class

Blower HP

Amps

RK F4 or K¹ 3.75 60 60 60 60 30 30 25 25 60 60 60 60 30 30 25 25
or J

F10 CC 3.75 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12

F30

CC 3.75 10 10 10 10

10 10

F31

CC 3.75 15 15 15 15 15 15

15 15 15 15

F57 CC 3.75 -

7.5 7.5 4

F61²

3.75 80 70 90 80 45 40 35 35 100 90 110 110 60 60 45 45

CB10³ -

3.75 80 70 90 80 45 40 35 35 100 90 110 110 60 60 45 45

¹ When SCCR is installed, F4 fuse is Class J. ² Fuse F61 is only used on units with SCCR installed.
³ Units using Circuit Breakers will use CB10 option.

Electric Heat Size

45 KW

TABLE 25
LCM 120 Continued

60 KW

Unit Voltage

208V - 3 Ph 240V - 3 Ph 460V - 3 Ph 575V - 3 Ph 208V - 3 Ph 240V - 3 Ph 460V - 3 Ph 575V - 3 Ph

Power Exhaust Option

W/ W/O W/ P.E. P.E. P.E.

W / O P.E.

W/ W/O W/ P.E. P.E. P.E.

W / O P.E.

W / P.E.

W / O P.E.

W / P.E.

W / O P.E.

W / P.E.

W / O P.E.

W/ W/O P.E. P.E.

Diagram Key

Class

Blower HP

Amps

RK F4 or K¹ 3.75 60 60 60 60 30 30 25 25 60 60 60 60 30 30 25 25
or J

F10 CC 3.75 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12

F30

CC 3.75 10 10 10 10

10 10

F31

CC 3.75 15 15 15 15 15 15

15 15 15 15

F57 CC 3.75 -

7.5 7.5 4

F61²

3.75 150 150 150 150 80 80 60 60 150 150 175 175 80 80 70 70

CB10³ -

3.75 150 150 150 150 80 80 60 60 150 150 175 175 80 80 70 70

¹ When SCCR is installed, F4 fuse is Class J. ² Fuse F61 is only used on units with SCCR installed.
³ Units using Circuit Breakers will use CB10 option.

Page 52

TABLE 26

LCM 150

Electric Heat Size

0 KW

Unit Voltage

208/230V - 3 Ph

460V - 3 Ph

575V - 3 Ph

208V - 3 Ph

Power Exhaust Option

W/ W/O W/ W/O W/ W/O W/ W/O

P.E.

P.E. P.E. P.E.

P.E.

Diagram Key

Class

Blower HP

Amps

RK or K¹ or J

3.75

35 30

F10

3.75

12 12

F30

3.75

F31

3.75

15 15

F57

3.75

7.5 7.5

F61²

3.75

CB10³

3.75

35 30

¹ When SCCR is installed, F4 fuse is Class J. ² Fuse F61 is only used on units with SCCR installed.
³ Units using Circuit Breakers will use CB10 option.

TABLE 27

LCM 150 Continued

Electric Heat Size

22.5 KW

15 KW

240V - 3 Ph 460V - 3 Ph

W/ W/O W/ W/O

P.E.

575V - 3 Ph
W/ W/O P.E. P.E.

25 25

12 12

7.5 7.5

25 25

30 KW

Unit Voltage

208V - 3 Ph 240V - 3 Ph 460V - 3 Ph 575V - 3 Ph 208V - 3 Ph 240V - 3 Ph 460V - 3 Ph 575V - 3 Ph

Power Exhaust Option

W/ W/O W/ P.E. P.E. P.E.

W / O P.E.

W/ W/O W/ P.E. P.E. P.E.

W / O P.E.

W / P.E.

W / O P.E.

W / P.E.

W / O P.E.

W / P.E.

W / O P.E.

W/ W/O P.E. P.E.

Diagram Key

Class

Blower HP

Amps

RK F4 or K¹ 3.75 80 70 80 70 35 30 25 25 80 70 80 70 35 30 25 25
or J

F10 CC 3.75 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12

F30

CC 3.75 10 10 10 10

10 10

F31

CC 3.75 15 15 15 15 15 15

15 15 15 15

F57 CC 3.75 -

7.5 7.5 4

F61²

3.75 80 70 90 80 45 40 35 35 100 90 110 110 60 60 45 45

CB10³ -

3.75 80 70 90 80 45 40 35 35 100 90 110 110 60 60 45 45

¹ When SCCR is installed, F4 fuse is Class J. ² Fuse F61 is only used on units with SCCR installed.
³ Units using Circuit Breakers will use CB10 option.

Page 53

Electric Heat Size

45 KW

TABLE 28
LCM 150 Continued

60 KW

Unit Voltage

208V - 3 Ph 240V - 3 Ph 460V - 3 Ph 575V - 3 Ph 208V - 3 Ph 240V - 3 Ph 460V - 3 Ph 575V - 3 Ph

Power Exhaust Option

W/ W/O W/ P.E. P.E. P.E.

W / O P.E.

W/ W/O W/ P.E. P.E. P.E.

W / O P.E.

W / P.E.

W / O P.E.

W / P.E.

W / O P.E.

W / P.E.

W / O P.E.

W/ W/O P.E. P.E.

Diagram Key

Class

Blower HP

Amps

RK F4 or K¹ 3.75 80 70 80 70 35 30 25 25 80 70 80 70 35 30 25 25
or J

F10 CC 3.75 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12

F30

CC 3.75 10 10 10 10

10 10

F31

CC 3.75 15 15 15 15 15 15

15 15 15 15

F57 CC 3.75 -

7.5 7.5 4

F61²

3.75 150 150 150 150 80 80 60 60 150 150 175 175 80 80 70 70

CB10³ -

3.75 150 150 150 150 80 80 60 60 150 150 175 175 80 80 70 70

¹ When SCCR is installed, F4 fuse is Class J. ² Fuse F61 is only used on units with SCCR installed.
³ Units using Circuit Breakers will use CB10 option.

Page 54

Field-Installed Accessories
When field-installing the following accessories, refer to the latest online installation instructions.

Accessory Economizer Outdoor Air Damper Electric Heat Smoke Detector

TABLE 29
Instruction # 507227-XX 506340-XX 507250-XX 506437-XX

Factory Unit Controller Settings
Use the mobile service app to adjust parameters; menu paths are shown in each table. Refer to the Unit Controller manual provided with each unit.
TABLE 30 through TABLE 33 show blower factory settings. Record any field-adjusted settings in the blank column.
TABLE 34 through TABLE 36 show control options. When applicable, record field-specific information on the label located inside the compressor access panel.
When field installing optional kits and accessories, the Unit Controller must be configured to identify the option before it will function. Refer to FIGURE 45 and FIGURE 46 to determine whether the Unit Controller configuration I.D. must change. To configure the option, use RTU MENU > SETUP > INSTALL menu path. Press NEXT until CONFIGURATION ID 1 or 2 appears depending on the option installed. Change the appropriate character in the configuration I.D. For example, when an economizer is installed using a single enthalpy sensor, change configuration I.D. 1, the second character, to "S".

TABLE 30

LGM/LCM 092U4E (2-Compressor) Staged Direct Drive

Parameter

Factory Setting

Field Setting

Description

NOTE - Any changes to Smoke CFM setting must be adjusted be fore the other CFM settings. Use SETTINGS > RTU OPTIONS > EDIT PARAMETERS

3000 CFM CFM

Blower CFM during smoke detection.

SETUP > TEST & BALANCE (can also use SETTINGS > RTU OPTIONS > BLOWER > SPEEDS)

3000 CFM CFM

Clower CFM during heating.

2625 CFM CFM

Blower CFM during high
speed cooling (2 compressor) operation.

300 CFM CFM

Blower CFM during low
speed cooling (1 compressor) operation.

800 CFM CFM

Blower CFM during ventilation.

1195 CFM RPM*

Adjust RPM based on unit stattic and blower tables to reach target CFM.

*Once all four blower settings are entered, the target (highest of the heating and cooling settings) CFM will be displayed. Once the RPM is saved for the target CFM, all other blower RPM values are set by the Unit Controller according to the field CFM setting..

SETUP > TEST & BALANCE (can also use SETTINGS > RTU OPTIONS > DAMPER)

Damper min. position during LOW blower operation.

Damper min. position during HIGH blower operation.

50%

Min. damper % for stage 1 power exhaust operation.

SETTINGS > RTU OPTIONS > EDIT PARAMETERS

Damper minimum position

during G blower operation.

101%

% Open

(Setting parameter 29 to "101" disables parameter

29 and passes control to

parameter 9 or 132).

216

10%

Deadband % for stage 1 power exhaust operation.

SETTINGS > RTU OPTIONS > EDIT PARAMETER

Compressor 1 low temp

0°F

°F

lockot. Settings lower than

0°F could void warranty.

Compressor 2 low temp

0°F

°F

lockout. Settings lower than

0°F could void warranty.

Page 55

TABLE 31

LGM/LCM 102U4E (2-Compressor) Staged Direct Drive

Parameter

Factory Setting

Field Setting

Description

NOTE - Any changes to Smoke CFM setting must be adjusted be fore the other CFM settings. Use SETTINGS > RTU OPTIONS > EDIT PARAMETERS

3400 CFM CFM

Blower CFM during smoke detection.

SETUP > TEST & BALANCE (can also use SETTINGS > RTU OPTIONS > BLOWER > SPEEDS)

3400 CFM CFM

Clower CFM during heating.

2675 CFM CFM

Blower CFM during high
speed cooling (2 compressor) operation.

800 CFM CFM

Blower CFM during low
speed cooling (1 compressor) operation.

800 CFM CFM

Blower CFM during ventilation.

1285 CFM RPM*

Adjust RPM based on unit stattic and blower tables to reach target CFM.

SETUP > TEST & BALANCE (can also use SETTINGS > RTU OPTIONS > DAMPER)

Damper min. position during LOW blower operation.

Damper min. position during HIGH blower operation.

50%

Min. damper % for stage 1 power exhaust operation.

SETTINGS > RTU OPTIONS > EDIT PARAMETERS

Damper minimum position

during G blower operation.

101%

% Open

(Setting parameter 29 to "101" disables parameter

29 and passes control to

parameter 9 or 132).

216

10%

Deadband % for stage 1 power exhaust operation.

SETTINGS > RTU OPTIONS > EDIT PARAMETER

Compressor 1 low temp

0°F

°F

lockot. Settings lower than

0°F could void warranty.

Compressor 2 low temp

0°F

°F

lockout. Settings lower than

0°F could void warranty.

TABLE 32

LGM/LCM 120U4E (2-Compressor) Staged Direct Drive

Parameter

Factory Setting

Field Setting

Description

NOTE - Any changes to Smoke CFM setting must be adjusted be fore the other CFM settings. Use SETTINGS > RTU OPTIONS > EDIT PARAMETERS

4000 CFM CFM

Blower CFM during smoke detection.

SETUP > TEST & BALANCE (can also use SETTINGS > RTU OPTIONS > BLOWER > SPEEDS)

4000 CFM CFM

Clower CFM during heating.

3500 CFM CFM

Blower CFM during high
speed cooling (2 compressor) operation.

875 CFM CFM

Blower CFM during low
speed cooling (1 compressor) operation.

875 CFM CFM

Blower CFM during ventilation.

1425 CFM RPM*

Adjust RPM based on unit stattic and blower tables to reach target CFM.

SETUP > TEST & BALANCE (can also use SETTINGS > RTU OPTIONS > DAMPER)

Damper min. position during LOW blower operation.

Damper min. position during HIGH blower operation.

50%

Min. damper % for stage 1 power exhaust operation.

SETTINGS > RTU OPTIONS > EDIT PARAMETERS

Damper minimum position

during G blower operation.

101%

% Open

(Setting parameter 29 to "101" disables parameter

29 and passes control to

parameter 9 or 132).

216

10%

Deadband % for stage 1 power exhaust operation.

SETTINGS > RTU OPTIONS > EDIT PARAMETER

Compressor 1 low temp

0°F

°F

lockot. Settings lower than

0°F could void warranty.

Compressor 2 low temp

0°F

°F

lockout. Settings lower than

0°F could void warranty.

Page 56

TABLE 33

LGM/LCM 150U4E (2-Compressor) Staged Direct Drive

Parameter

Factory Setting

Field Setting

Description

NOTE - Any changes to Smoke CFM setting must be adjusted be fore the other CFM settings. Use SETTINGS > RTU OPTIONS > EDIT PARAMETERS

5000 CFM CFM

Blower CFM during smoke detection.

SETUP > TEST & BALANCE (can also use SETTINGS > RTU OPTIONS > BLOWER > SPEEDS)

5000 CFM CFM

Clower CFM during heating.

4375 CFM CFM

Blower CFM during high
speed cooling (2 compressor) operation.

1100 CFM CFM

Blower CFM during low
speed cooling (1 compressor) operation.

1100 CFM CFM

Blower CFM during ventilation.

1655 CFM RPM*

Adjust RPM based on unit stattic and blower tables to reach target CFM.

SETUP > TEST & BALANCE (can also use SETTINGS > RTU OPTIONS > DAMPER)

Damper min. position during LOW blower operation.

Damper min. position during HIGH blower operation.

50%

Min. damper % for stage 1 power exhaust operation.

SETTINGS > RTU OPTIONS > EDIT PARAMETERS

Damper minimum position

during G blower operation.

101%

% Open

(Setting parameter 29 to "101" disables parameter

29 and passes control to

parameter 9 or 132).

216

10%

Deadband % for stage 1 power exhaust operation.

SETTINGS > RTU OPTIONS > EDIT PARAMETER

Compressor 1 low temp

0°F

°F

lockot. Settings lower than

0°F could void warranty.

Compressor 2 low temp

0°F

°F

lockout. Settings lower than

0°F could void warranty.

TABLE 34 581024-01

Units With Hot Gas Reheat

RTU Menu > Settings "RTU Options" > Dehumidifier

Parameter

Factory Setting

Field Setting

Description

105

Factory Setting 7: Reheat mode en abled without prerequisite conditions. Controlled by RH sensor (A91) con nected to input A55_P298_5 and set point set at parameter 106 (default 60%).

TABLE 35 581037-01
Units with LonTalk Settings
Use menu RTU Menu > Network Integration > Network Setup Wiz ard > Set "LONTALK"

TABLE 36 581038-01
Units With BACnet Settings
RTU Menu > Network Integration > Network Setup Wizard > BACnet MS/TP > See BACnet MAC Address
BACNET MAC ADDRESS: Units With Room Sensor, CPC/LSE Gateway Settings
RTU Menu > Network Integration > Network Setup Wizard > SBUS > Set SBUS Address
LCONN ADDRESS:

Page 57

Configuration ID 1
1 2 3 4 5 6 7 8

Humiditrol [1]
Not Installed = N Humiditrol Installed = H
Unconfigured = U
Economizer [2]
Not Installed = N Motorized Outdoor Air
Damper Only = M Economizer - Temperature = T
Economizer Global = G Economizer - Single Enthalpy = S
Economizer - Dual Enthalpy = D Unconfigured = U
Power Exhaust [3]
Not Installed = N Single-Stage = S
Dual-Stage = D Unconfigured = U
Power Exhaust Control 4]
Not Installed = N Damper Position = A A34 Pressure Sensor = C

[8] Outdoor Air Velocity Control
N = Not applicable (for future use) L = Outdoor Air Control Installed
with A24 Sensor set for low range. M = Outdoor Air Control Installed with
A24 Sensor set for medium range. H = Outdoor Air Control Installed with
A24 Sensor set for high range.
[7] System Blower Sub-type
N = Not Applicable. L = ECM Direct Drive Blower with PWM control. H = EBM Direct Drive Blower with Modbus control. 5 = EBM Direct Drive 500mm blower with Modbus
control. B = Mitsubishi Belt Drive blower with Modbus
control. D = Delta Belt Drive blower with Modbus control.
[6] Blower Variable Frequency Drive Bypass
N = Not Installed A = Automatic Bypass M = Manual Bypass U = Electronic Bypass Field Unconfigured
[5] Network Module
N = Not Installed L = LonTalk (Lennox)
FIGURE 45

Page 58

Configuration ID 2

1 2 3 4 5 6 7 8 9 10

Air Flow Proving [1] Switch (S52)
Not Installed = N Installed on M4 = C Installed on DDC
Controller = D
Dirty Filter Switch (S27) [2]
Not Installed = N Installed on M4 = C Installed on DDC Controller = D
Overflow Switch [3] (S149 / S179)
Not Installed = N Installed = Y
Reserved [4]
Reserved = N

[10] Reserved
N = Reserved
[9] Electric Heat (Field-Installed)
N = Not Installed Y = Installed
[8] Load Shedding
N = Not Installed G = Global (P297 - pin 9) 2 = Installed on DI-2 3 = Installed on DI-3
[7] Zone Bypass Damper
N = Not Installed Y = Installed

Phase / Voltage Detection * [5]
N = Not Installed 1 = Enabled Internal (Lennox) 2 = External (A42) Phase Detection
on DI-2 3 = External (A42) Phase Detection
on DI-3

[6] IAQ Options
N = Not Installed
1 = UV Lamp Installed
2 = Bipolar Ionizer Installed 3 = UV Lamp and
Bipolar Ionizer Installed

* When phase detection and voltage monitoring is enabled and wired incorrectl y, the system will go into demand hold status and restart after six minutes.

FIGURE 46

Page 59

Decommissioning
Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail. It is recommended good practice that all refrigerants are recovered safely.
Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of recovered refrigerant. It is essential that electrical power is available before starting decommissioning.
a) Become familiar with the equipment and its operation.
b) Isolate system electrically.
c) Before attempting the procedure, ensure that: · mechanical handling equipment is available, if required, for handling refrigerant cylinders; · all personal protective equipment is available and being used correctly; · the recovery process is supervised at all times by a competent person; · recovery equipment and cylinders conform to the appropriate standards.
d) Pump down refrigerant system, if possible.
e) If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system.

f) Make sure that cylinder is situated on the scales before recovery takes place.
g) Start the recovery machine and operate in accordance with instructions.
h) Do not overfill cylinders (no more than 80% volume liquid charge).
i) Do not exceed the maximum working pressure of the cylinder, even temporarily.
j) When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the equipment are removed from site promptly and all isolation valves on the equipment are closed off.
k) Recovered refrigerant shall not be charged into another REFRIGERATING SYSTEM unless it has been cleaned and checked.
IMPORTANT
Equipment shall be labelled stating that it has been decommissioned and emptied of refrigerant. The label shall be signed and dated. Ensure that there are labels on the equipment that state the flammability of the refrigerant used.

Page 60

START-UP REPORT
Job Name:___________________________________

Inspections and Checks

Store No.___________Start-Up Date:______________

Damage?

Yes No

R454B

Address:_____________________________________

If yes, reported to:____________________________

City:______________________________State:______ Start-Up Contractor:____________________________ Technician:___________________________________ Model No.:___________________________________ Serial No.:____________________________________ RTU No.:________ Catalog No.:__________________

Verify factory and field-installed accessories.
Check electrical connections. Tighten if necessary.
Supply voltage: L1-L2______L1-L3_____L2-L3_____
If unit contains a 208-230/240 volt transformer: Check primary transformer tap Transformer secondary voltage: __________

Cooling Checks

Compressor Rotation Ambient Temp.________Return Air Temp.________ Supply Air Temp.________

Compressor Amps

Compressor Volts

Pressures Condenser Fan Amps CC Heater Amps

L3 L1-L2 L1-L3 L2-L3 Disch. Suct. L1

Blower Checks

Pulley/Belt Alignment Set Screws Tight

Blower Rotation Belt Tension

Nameplate Amps:_________ Volts:_______________

Motor

Amps L1_________ L2_________ L3_________

Volts L1-L2_____________ L1-L3_____________ L2-L3_____________

Heating Checks - Gas

Fuel type: Nat. LP Inlet Pressure:_____in. w.c. Return Air Temp.:______ Supply Air Temp.:_____ Altitude:____________ Primary Limits Operate:

CO2%: Gas Valve GV1 GV2

Manifold Pressure

Low Fire

High Fire

Control Type

Heating Checks - Electric

Return Air Temp.:______ Supply Air Temp.:______ Limits Operate:

Amps

L1 L2 L3

Accessory Checks

Power Exhaust Amps

1 _____________ 2 ____________ None

Min. Pos.

Economizer Operation Motor travel full open/close

Page 61

References

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