Lennox ML14KP1 Merit Series Heat Pump

Residential Product Specifications (EHB)

1.5 to 5 Tons | SEER2 up to 17.0 | HSPF2 up to 8.2

Cooling Capacity: 18,000 to 58,000 Btuh | Heating Capacity: 17,400 to 60,000 Btuh

2025 Compliant Refrigerant: R-454B

Product Overview

Image description: A visual representation of the Lennox ML14KP1 outdoor unit, a residential heat pump. It features a louvered cabinet, a top-mounted fan, and branding for Lennox and the Merit Series. The unit is designed for single-stage operation and uses R-454B refrigerant.

Model Number Identification

Diagram description: Illustrates the breakdown of the ML14KP1 model number (e.g., ML 14 KP 1 - 036 - 230 A 01) into its constituent parts:

Product Tier: ML = Merit Series
Nominal SEER2: 14 = 14.0 to 17.0
Refrigerant: K = R-454B
Unit Type: P = Heat Pump
Cooling Stages: 1 = Single-Stage Compressor
Voltage: 230 = 208/230V-1ph-60Hz
Nominal Cooling Capacity: 018 (1.5 tons) through 060 (5 tons)
Minor Revision Number
Ratings Revision Number

Feature Highlights

Diagram description: A cutaway view of the Lennox ML14KP1 outdoor unit, detailing key internal components:

1. Outdoor Coil Fan: Direct drive PSC fan, vertical air discharge, louvered steel top guard, totally enclosed fan motor, ball bearings, inherently protected.
2. Quantum™ Coil: Lennox designed and fabricated, enhanced aluminum alloy tube/enhanced fin coil, superior corrosion resistance, ripple-edged aluminum fins, aluminum tube construction, lanced fins for maximum surface exposure, fin collars grip tubing, flared shoulder tubing connections, factory tested under high pressure, accessible for cleaning.
3. Expansion Valve - Outdoor Unit: Designed and sized for heat pump systems, senses suction temperature during heating cycle. Includes a High Pressure Switch for system protection with automatic reset.
4. High Capacity Liquid Line Drier: Factory installed, traps moisture or dirt. 100% molecular-sieve, bead type, bi-flow.
5. Four-Way Reversing Valve: Rapid changeover of refrigerant flow direction between cooling and heating. Operates on pressure differential.
6. Scroll Compressor: Single-stage, high efficiency, uniform suction flow, constant discharge flow, quiet operation, low gas pulses, internally protected motor, discharge line muffler, resilient rubber mounts for vibration isolation. Features scroll compressor operation explanation. Includes Compressor Crankcase Heater (factory installed on -036 to -060 models) to prevent liquid migration.
7. Defrost Control: Time/temperature defrost control, adjustable cycle settings, anti-short cycle, compressor delay, high/low pressure switch monitoring, diagnostic LEDs.
8. Heavy Gauge Steel Cabinet: Pre-painted powder paint finish, louvered panels, control box, drainage holes, zinc-coated steel unit base for rust resistance.
9. Refrigerant Line Access: Connections for vapor and liquid lines, fully serviceable brass service valves.

Approvals and Warranty

Approvals

AHRI Standard 210-240-2023 certified
AHRI Certified system match-ups and expanded ratings (visit www.LennoxPros.com)
ENERGY STAR® certified
Sound rated to AHRI Standard 270-2008 test conditions
Tested in Lennox' Research Laboratory environmental test room
Rated According to U.S. Department of Energy (DOE) test procedures
Unit and components ETL, NEC and CEC bonded for grounding
ETL certified (U.S. and Canada)
ISO 9001 Registered Manufacturing Quality System

Warranty

Compressor: Limited five years in residential/non-residential installations.
All other covered components: Limited five years in residential installations, limited one year in non-residential installations.

Refer to Lennox® Basic Limited Warranty at www.Lennox.com for additional details.

Detailed Features

Applications

1.5 through 5 tons
Single phase power supply
Sound levels as low as 74 dBA
Vertical air discharge
Applicable to indoor air handlers or gas furnaces with indoor add-on coils
Shipped completely factory assembled, piped and wired

Note: When heat pumps are used with gas furnaces, a dual-fuel compatible thermostat or zone control system with dual-fuel capabilities must be used (order separately).

Note: Installer must set outdoor unit, connect refrigerant lines and make electrical connections to complete job.

Refrigeration System

R-454B Refrigerant

Low GWP (Global Warming Potential)
Zero ODP (Ozone Depletion Potential)
Low Toxicity/Lower Flammability - A2L
Unit is factory pre-charged

Note: Total system refrigerant charge is dependent on outdoor unit size, indoor unit size, and refrigerant line length.

Note: Refer to the unit-mounted charging sticker to determine the correct amount of charge required.

System Components & Controls

Low Pressure Switch: Shuts off unit if suction pressure falls below setting, providing loss of charge and freeze-up protection. Automatic reset.
High Capacity Liquid Line Drier: Factory installed, traps moisture or dirt. 100% molecular-sieve, bead type, bi-flow drier.
Four-Way Reversing Valve: Rapid changeover of refrigerant flow direction from cooling to heating and vice versa. Operates on pressure differential between outdoor unit and indoor coil.
Expansion Valve - Outdoor Unit: Designed and sized for heat pump systems. Sensing bulb senses suction temperature during heating cycle.
High Pressure Switch: Protects the system from high pressure conditions. Automatic reset.

Optional Accessories (Refrigeration)

Check/Expansion Valve Kits: Field installed on indoor units (if required). See TXV Usage table.
Chatleff-style fitting
Freezestat: Senses suction line temperature. Cycles compressor off when suction line temperature falls below freezestat setpoint (Opens at 29°F and closes at 58°F). Installs on or near the discharge line of the evaporator or on the suction line.
Refrigerant Line Kits: Shipped refrigeration clean, cleaned, dried, pressurized, and sealed at factory. Suction line fully insulated. Lines are stubbed at both ends.

Indoor Refrigerant Detection System (RDS)

Complies with UL 60335-2-40 approved standard.
Required for all systems using R-454B refrigerant.
Factory or field installed on all indoor units.
Consists of an RDS refrigerant detection sensor and a mitigation control in the indoor unit.
Ensures safe operation for systems equipped with R-454B refrigerant.
Indoor sensor detects R-454B refrigerant. If detected, the system stops compressor operation and operates the blower to reduce concentrations.
Once safe levels are reached, the HVAC system resumes normal operation.
Refer to indoor unit Product Specifications documents for additional details.

Compressor

Single-Stage Scroll Compressor

High efficiency with uniform suction flow.
Constant discharge flow, high volumetric efficiency, and quiet operation.
Low gas pulses during compression reduce operational sound levels.
Compressor motor is internally protected from excessive current and temperature.
Muffler in discharge line reduces operating sound levels.
Installed on resilient rubber mounts for vibration-free operation.

Scroll Compressor Operation

Two involute spiral scrolls generate crescent-shaped gas pockets. One scroll remains stationary while the other orbits. Gas is drawn into the outer pocket, sealed as the scroll rotates. Pockets move to the center, volume is reduced, and gas is forced out at high pressure. Multiple pockets compress simultaneously for a smooth cycle. Continuous flank contact minimizes leakage and maximizes efficiency. Tolerant to slugging and contaminants.

Compressor Crankcase Heater

(Factory installed on -036, -042, -048, -060 models) Prevents migration of liquid refrigerant into the compressor and ensures proper lubrication.

Optional Accessories (Compressor)

Compressor Crankcase Heater: (Optional for -018, -024, -030 models) Prevents migration of liquid refrigerant into compressor and ensures proper compressor lubrication.
Compressor Sound Cover: Reinforced vinyl cover with 1-1/2 inch thick fiberglass insulation. Hook and loop fastening tape on open edges.

Controls

Defrost Control

Time/temperature defrost control.
Defrost cycle every 30, 60, or 90 minutes of compressor "on" time at outdoor coil temperatures below 42°F. Factory setting: 90 minutes.
Anti-short cycle, timed-off control: 5 minutes.
Compressor delay: 30 seconds (field selectable) cycles the compressor in and out of defrost mode.
High and low pressure switch monitoring (five-trip lockout).
Two diagnostic LEDs for troubleshooting.
Conveniently located in control box.

Optional Accessories (Controls)

Thermostat: Not furnished with unit. See Page 6.
Compressor Low Ambient Cut-Off: Non-adjustable switch prevents compressor operation in cooling mode when outdoor temperature is below 35°F.
Compressor Hard Start Kit: For single-phase units with PSC compressor motor. May be required for low voltage conditions to increase starting torque.
Indoor Blower Off Delay Relay Kit: Delays the indoor blower-off time during the cooling cycle.
Low Ambient Kit: Allows heat pump to operate in cooling mode down to 45°F outdoor air temperature without additional controls. Allows proper operation down to 30°F.

Note: Crankcase heater and freezestat should be installed on compressors equipped with a low ambient kit.

Note: A compressor lock-out thermostat should be added to terminate compressor operation below recommended operation conditions.

Other Control Accessories

Mild Weather Kit: Units can operate in heating mode up to 75°F outdoor air. Field installed kit allows heating operation above 75°F.
Outdoor Thermostat Kit: Locks out electric heating elements on indoor units where two-stage control is applicable. Maintains heating load on low power input before allowing full power. Thermostat Kit and Mounting Box must be ordered separately.

Cabinet

Heavy gauge steel cabinet.
Pre-painted powder paint cabinet finish.
Louvered heavy gauge steel panels.
Control box conveniently located with all controls factory wired.
Corner patch plate allows compressor access.
Drainage holes provided in base section.
Zinc-Coated Steel Unit Base: Resists rust and corrosion.

Refrigerant Line Connections, Electrical Inlets, Service Valves

Sweat connection vapor and liquid lines.
Located on corner of unit cabinet.
Fully serviceable brass service valves. Vapor valve can be fully shut off; liquid valve may be front seated to manage refrigerant charge.
Refrigerant line connections and field wiring inlets are located in one central area for easy access.
See dimension drawing.
Braze-Free/Press Fitting Flexibility: Units can accommodate braze-free or press fittings for installation versatility.

Optional Accessories (Cabinet/Connections)

Unit Stand-Off Kit: Black high density polyethylene feet. Raises unit off mounting surface. Four feet furnished per order number.

Control Options

E30 Smart Wi-Fi Thermostat

4 Htg.-2 Clg.
7-day, universal, programmable, touchscreen thermostat.
Controls dehumidification during cooling mode and humidification during heating mode.
Smooth Setback Recovery and compressor short-cycle protection.
One-Touch Away Mode, Smart Away™ (geo-fencing), equipment maintenance reminders and scheduling.
Smart home automation compatible with Apple HomeKit™, Amazon Alexa®, and Google Assistant.
Lennox® Home App controls temperature, fan operation, set programs/schedules, and set Away mode on a smartphone.
Lennox Smart Tech App allows installer to commission the system and remotely turn the system on/off during setup or service call.

M30 Smart Wi-Fi Thermostat

4 Htg.-2 Clg.
7-day, universal, programmable, touchscreen thermostat.
Humidification / dehumidification / dewpoint measurement and control, Humiditrol® control.
Smooth Setback Recovery and compressor short-cycle protection.
One-Touch Away Mode, Smart Away™ (geo-fencing), equipment maintenance reminders and scheduling.
Smart home automation compatible with Apple HomeKit™, Amazon Alexa®, and Google Assistant.
Lennox® Home App controls temperature, fan operation, set programs/schedules, and set Away mode on a smartphone.
Lennox Smart Tech App allows installer to commission the system and remotely turn the system on/off during setup or service call.

L40 Smart Wi-Fi Thermostat

2 Htg.-1 Clg.
7-day, universal, programmable, touchscreen thermostat.
Provides temperature control for gas, electric, and heat pumps for single-stage heating or cooling systems (including dual-fuel operation).
One-Touch Away Mode, Smart Away™ (geo-fencing), equipment maintenance reminders and scheduling.
Smooth Setback Recovery and compressor short-cycle protection.
Smart home automation compatible with Amazon Alexa®, Google Assistant, Control4®, and Building36®.
Lennox® Home App controls temperature, fan operation, set programs/schedules, and set Away mode on a smartphone.
Lennox Smart Tech App allows installer to commission the system and remotely turn the system on/off during setup or service call.

Note: Two-stage heating for Dual-Fuel Heat Pump applications only.

Note: Please refer to the individual Product Specifications for these products for full information.

Controls - Ordering

	Dimensions (in.)	Order Number
E30 Smart Wi-Fi Thermostat	5 x 7-1/2 x 1	20A65
L40 Smart Wi-Fi Thermostat	2-13/16 x 2-13/16 x 1/4	27V51
M30 Smart Wi-Fi Thermostat	3-5/16 x 4-5/16 x 7/8	15Z69

Thermostat Accessories

1 Discharge Air Temperature Sensor (For E30): 88K38
2 Remote Outdoor Air Temperature Sensor (For dual-fuel and Humiditrol®): X2658

¹ Optional for service diagnostics (E30).

² Remote Outdoor Air Temperature Sensor is used with conventional (non-Lennox® Communicating) outdoor units (sensor is furnished with Lennox® Communicating outdoor units). Allows the thermostat to display outdoor temperature. Required in dual-fuel and Humiditrol® applications.

Specifications

General Specifications

Size	Nominal Tonnage	Sound Rating Number (dBA)	Connections (sweat)	Refrigerant (15 ft. Line Set) ¹	Refrigerant (30 ft. Line Set) ¹	Indoor Unit Expansion Valve (TXV)
018	1.5	74	Liquid line (OD) - in.: 3/8 Vapor line (OD) - in.: 3/4	R-454B charge furnished: 4 lbs. 7 oz.	R-454B charge furnished: 5 lbs. 0 oz.	26Z70
024	2	74	Liquid line (OD) - in.: 3/8 Vapor line (OD) - in.: 3/4	R-454B charge furnished: 5 lbs. 3 oz.	R-454B charge furnished: 5 lbs. 12 oz.	26Z70
030	2.5	74	Liquid line (OD) - in.: 3/8 Vapor line (OD) - in.: 3/4	R-454B charge furnished: 6 lbs. 7 oz.	R-454B charge furnished: 7 lbs. 0 oz.	26Z70
036	3	75	Liquid line (OD) - in.: 3/8 Vapor line (OD) - in.: 7/8	R-454B charge furnished: 7 lbs. 2 oz.	R-454B charge furnished: 7 lbs. 11 oz.	26Z70
042	3.5	78	Liquid line (OD) - in.: 3/8 Vapor line (OD) - in.: 7/8	R-454B charge furnished: 8 lbs. 5 oz.	R-454B charge furnished: 8 lbs. 14 oz.	26Z71
048	4	79	Liquid line (OD) - in.: 3/8 Vapor line (OD) - in.: 7/8	R-454B charge furnished: 8 lbs. 6 oz.	R-454B charge furnished: 8 lbs. 15 oz.	26Z71
060	5	79	Liquid line (OD) - in.: 3/8 Vapor line (OD) - in.: 1-1/8	R-454B charge furnished: 9 lbs. 6 oz.	R-454B charge furnished: 9 lbs. 15 oz.	26Z72

Outdoor Coil Specifications

Size	Net face area - ft.² Outer coil	Inner coil	Tube diameter - in.	Rows	Fins - in.
018	24.5	-	5/16	1	22
024	24.5	-	5/16	1	22
030	18.7	18.0	5/16	2	22
036	22.2	21.5	5/16	2	22
042	24.93	24.13	5/16	2	22
048	24.93	24.13	5/16	2	22
060	29.09	28.16	5/16	2	22

Outdoor Fan Specifications

Size	HP	Diameter - in.	Blades	Cfm	Rpm	Watts
018	1/8	22	3	2840	825	127
024	1/8	22	3	2840	825	127
030	1/6	22	3	2670	825	162
036	1/5	26	3	3590	839	200
042	1/3	26	4	4110	825	213
048	1/3	26	4	4110	825	213
060	1/3	26	4	4060	825	224

Shipping Data

Size	Shipping Data - lbs.
018	185
024	185
030	185
036	220
042	250
048	250
060	260

Electrical Data

Size	Line voltage data (Volts-Phase-Hz)	² Maximum overcurrent protection (MOCP) amps	³ Minimum circuit ampacity (MCA)	Compressor Rated Load Amps	Compressor Locked Rotor Amps	Fan Motor Full Load Amps
018	208/230-1-60	15	9.7	7.2	47	0.7
024	208/230-1-60	20	13.6	10.3	60.2	0.7
030	208/230-1-60	25	16.6	12.5	67	1.0
036	208/230-1-60	35	22.2	16.7	93.5	1.4
042	208/230-1-60	35	22.3	15.8	96	2.6
048	208/230-1-60	50	30.6	22.4	126	2.6
060	208/230-1-60	50	32.2	23.7	157	2.6

² HACR type breaker or fuse.

³ Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements.

Optional Accessories - Order Separately

Accessory	Size 018	Size 024	Size 030	Size 036	Size 042	Size 048	Size 060
Compressor Crankcase Heater	•	•	•	Factory	•	•	•
Compressor Hard Start Kit (Copeland)	•	•
Compressor Hard Start Kit (LG)			•	•	•	•	•
Compressor Sound Cover	•	•	•	•	•	•	•
Compressor Low Ambient Cut-Off	•	•	•	•	•	•	•
Freezestat (3/8 in.)	•	•	•	•	•	•	•
Indoor Blower Off Delay Relay	•	•
⁴ Low Ambient Kit	•	•	•	•	•	•	•
Mild Weather Kit	•	•	•	•	•	•	•
Outdoor Thermostat Kit (Thermostat)	•	•	•	•	•	•	•
Outdoor Thermostat Kit (Mounting Box)	•
Refrigerant Line Sets (Liquid x Suction OD \| Insulation Thickness \| Length)	3/8 x 3/4 \| 3/8 \| 20 ft. (89J56)	3/8 x 3/4 \| 3/8 \| 30 ft. (89J57)	3/8 x 3/4 \| 3/8 \| 40 ft. (89J58)	3/8 x 3/4 \| 3/8 \| 50 ft. (89J59)	3/8 x 7/8 \| 3/8 \| 30 ft. (89J60)	3/8 x 7/8 \| 3/8 \| 40 ft. (89J61)	3/8 x 7/8 \| 3/8 \| 50 ft. (89J62)
Unit Stand-Off Kit	•	•	•	•	•	•	•

⁴ Crankcase Heater and Freezestat are recommended with Low Ambient Kit.

Dimensions

Diagram description: Top and side views of the Lennox ML14KP1 outdoor unit, illustrating dimensions and connection points. Includes inlet/outlet air flow, suction and liquid line connections, electrical inlets, and compressor location. Shows optional unit stand-off kit placement.

Size	A Width and Depth		B Height		C
Size	in.	mm	in.	mm	in.	mm
018	28-1/4	718	43-1/4	1099	42-1/2	1080
024	28-1/4	718	43-1/4	1099	42-1/2	1080
030	28-1/4	718	33-1/4	845	32-1/2	826
036	32-1/4	819	33-1/4	845	32-1/2	826
042	32-1/4	819	37-1/4	946	36-1/2	927
048	32-1/4	819	37-1/4	946	36-1/2	927
060	32-1/4	819	43-1/4	1099	42-1/2	1080

Expanded Sound Data

Note: The octave sound power data does not include tonal correction.

Size	Octave Band Sound Power Levels dBA, re 10^-12 Watts Center Frequency - HZ							¹ Sound Rating Number (dBA)	² Estimated Sound Pressure Level at Distance From Unit (dBA at distance in ft.)
Size	125	250	500	1000	2000	4000	8000	¹ Sound Rating Number (dBA)	3	5	10	15	50
018	56.5	62	68.0	71.5	66.0	57.0	50	74	67	62	56	53	42
024	56.0	62	66.5	71.0	66	60	55.0	74	67	62	56	53	42
030	56.0	64	69.5	70.0	65	59	52.5	74	67	62	56	53	42
036	59	68	71.5	68.5	66	61	54	75	68	63	57	54	43
042	62	71.0	74.5	72.5	70	63	55.5	78	71	66	60	57	46
048	61	70.5	75.5	73.0	70	64	56.0	79	72	67	61	58	47
060	61.5	70.0	73.0	71	71	68	63	79	73	68	62	59	48

¹ Tested according to AHRI Standard 270-2008 test conditions.

² Estimated sound pressure level at distance based on AHRI Standard 275-2010 method for equipment located on the ground, roof, or on side of building wall with no adjacent reflective surface within 9.8 feet. Sound pressure levels will increase based on changes to assumptions. For other applications, refer to AHRI Standard 275.

Field Wiring and Installation Clearances

Field Wiring

Diagram description: Illustrates typical field wiring configurations for the Lennox outdoor unit, connecting to the indoor unit, thermostat, and optional electric heat. Shows disconnect switches and labels wire types (A, B, C, D) with descriptions for power and low voltage wiring.

A: Two Wire Power (see Electrical Data)
B: Two or Three Wire Power (size to heater capacity)
C: Twelve Wire Low Voltage 18 ga. minimum; Fourteen Wire Low Voltage with Optional Outdoor Thermostat
D: Eight Wire Low Voltage 18 ga. minimum; Ten Wire Low Voltage with Optional Outdoor Thermostat

Note: Field Wiring Not Furnished. All wiring must conform to NEC or CEC and local electrical codes.

Installation Clearances

Diagram description: Shows required clearance zones around the Lennox ML14KP1 outdoor unit for proper installation and servicing. References specific notes for clearance dimensions.

NOTES:

Service Clearance – 30 in. (762 mm) on one of the sides adjacent to the Control Box.
One of the other three sides must be 36 in. (914 mm).
One of the two remaining sides may be 12 in. (305 mm).
The remaining side may be 6 in. (152 mm).
48 in. (1219 mm) clearance required on top of unit.
24 in. (610 mm) required between two units.

TXV Usage and Substitution

TXV Usage

All Lennox coils and air handlers are shipped with a factory installed TXV. In most cases, no substitution is needed. If a different size TXV is required, it will be listed in the "TXV SUBSTITUTION" table by size. The correct TXV must be ordered separately and field installed.

Size	Order Number
018	26Z70
024	26Z70
030	26Z70
036	26Z70
042	26Z71
048	26Z71
060	26Z72

TXV Substitution - R-454B

A general guide for replacing the factory installed R-454B TXV if the indoor unit (coil/air handler) is larger or smaller than the outdoor unit.

Outdoor Unit		Indoor Unit		Indoor TXV	Indoor TXV Replacement
Size	Tons	Size	Tons	Furnished
018	1.5	42	3.5	26Z71	26Z70
018	1.5	48	4	26Z71	26Z70
018	1.5	49	4	26Z71	26Z70
018	1.5	50/60	4/5	26Z71	26Z70
018	1.5	51/61	4/5	26Z71	26Z70
018	1.5	60	5	26Z72	26Z70
024	2	42	3.5	26Z71	26Z70
024	2	48	4	26Z71	26Z70
024	2	49	4	26Z71	26Z70
024	2	50/60	4/5	26Z71	26Z70
024	2	51/61	4/5	26Z71	26Z70
024	2	60	5	26Z72	26Z70
030	2.5	42	3.5	26Z71	26Z70
030	2.5	48	4	26Z71	26Z70
030	2.5	49	4	26Z71	26Z70
030	2.5	50/60	4/5	26Z71	26Z70
030	2.5	51/61	4/5	26Z71	26Z70
030	2.5	60	5	26Z72	26Z70
036	3	42	3.5	26Z71	26Z70
036	3	48	4	26Z71	26Z70
036	3	49	4	26Z71	26Z70
036	3	50/60	4/5	26Z71	26Z70
036	3	51/61	4/5	26Z71	26Z70
036	3	60	5	26Z72	26Z70
042	3.5	24	2	26Z70	26Z71
042	3.5	30	2.5	26Z70	26Z71
042	3.5	30/36	2.5/3	26Z70	26Z71
042	3.5	36	3	26Z70	26Z71
042	3.5	60	5	26Z72	26Z71
048	4	30/36	2.5/3	26Z70	26Z71
048	4	36	3	26Z70	26Z71
048	4	60	5	26Z72	26Z71
060	5	50/60	4/5	26Z71	26Z72
060	5	51/61	4/5	26Z71	26Z72

TXV Ranges:

26Z70 - 1.5 to 3 ton systems - Use on 3 ton (036) and lower systems.
26Z71 - 3.5-4 ton systems - Use on 4 ton (048) and down to 3.5 ton (042) systems.
26Z72 - 5 ton systems - Use on 5 ton (060) systems only.

AHRI Standard 210-240-2023

Cooling or heating capacities are net values, including the effects of blower motor heat, and do not include supplementary heat. Power input is the total power input to the compressor(s) and fan(s), plus any controls and other items required as part of the system for normal operation.

Units which do not have an indoor air-circulating blower furnished as part of the model, i.e., split system with indoor coil only, is established by subtracting from the total cooling capacity 1250 Btu/h per 1,000 cfm, and by adding the same amount to the heating capacity.

Total power input for both heating and cooling is increased by 365 W per 1,000 cfm of indoor air circulated.

Revisions

Sections	Description of Change
New Section	Added Control Options.

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