Lennox KGA036 - User Manual

©2015
Litho U.S.A.
WARNING
Improper installation, adjustment, alteration, ser
vice 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 Page 2.................................
Parts Arrangements Page 3.........................
Shipping and Packing List Page 4....................
General Page 4....................................
Requirements Page 4...............................
Unit Support Page 5................................
Duct Connection Page 5............................
Rigging Unit For Lifting Page 6.......................
Horizontal Air Discharge Page 6......................
Condensate Drains Page 6..........................
Gas Piping Page 8.................................
Pressure Test Gas Piping Page 9.....................
High Altitude Derate Page 9.........................
Electrical Connections Page 9.......................
Blower Operation and Adjustments Page 11............
Cooling Start-Up Page 42............................
Gas Heat Start-Up Page 51...........................
Heating Operation and Adjustments Page 52............
Electric Heat Start-Up Page 52........................
Service Page 53....................................
INSTALLATION
INSTRUCTIONS
KGB/KCB024
KGB/KCB030
KGA/KCA036
KGB/KCB036
KGA/KCA048
KGB/KCB048
KGA/KCA060
KGB/KCB060
KGA/KCA072
KGB/KCB072
KGB/KCB074
KGA/KCA090
2-Ton
2-1/2-Ton
3-Ton
3-Ton
4-Ton
4-Ton
5-Ton
5-Ton
6-Ton
6-Ton
6-Ton
6-Ton
7-1/2 Ton
GAS AND COOLING PACKAGED UNITS
507348-04
12/2015
Supersedes 507348-01, -02, -03
RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE
KG SHOWN

Lennox KGA036 Specifications

General

Energy Efficiency Ratio (EER)	11.5
Stages	Single-stage
Refrigerant	R-410A
Voltage	208/230V
Compressor Type	Scroll
Phase	1
Sound Level (Outdoor Unit)	76 dB
Cooling Capacity	36, 000 BTU/h

Summary

Unit Support

Rigging Unit For Lifting

Condensate Drains

Condensate Drain Connections

Connect Gas Piping (Gas Units)

Pressure Test Gas Piping (Gas Units)

High Altitude Derate

Electrical Connections

Control Wiring

Blower Operation and Adjustments

Blower Operation

Determining Unit CFM - Direct Drive Blowers

Measure static pressure and use blower tables to determine CFM.

Determining Unit CFM - Belt Drive Blowers

Blower Belt Adjustment - M Volt Units

Cooling Start-Up

Cooling Operation

Compressor Voltage Phasing

Refrigerant Charge and Check - Fin;Tube Coil

Refrigerant Charge Verification

Use approach method or pressure tables to check refrigerant charge.

Refrigerant Charge and Check - All-Aluminum Coil

Normal Operating Pressures

Compare measured pressures to tables for normal operating conditions.

Charge Verification Procedure

Use approach method or pressure tables to check refrigerant charge.

Gas Heat Start-Up (Gas Units)

Safety Before Lighting

Follow safety instructions carefully before lighting the unit.

Placing Unit In Operation

Operate gas valve and ignition system correctly for startup.

Heating Operation and Adjustments (Gas Units)

Heating Sequence of Operation

Understand the sequence for inducer, spark, gas valve, and flame proving.

Electric Heat Start-Up (KC Units)

Service

Filter Replacement

Replace temporary filters before building occupation; check monthly.

Burner Cleaning (Gas Units)

Turn off power/gas, remove panel, clean burners and orifices.

Combustion Air Inducer (Gas Units)

Evaporator Coil Cleaning

Condenser Coil Cleaning

Supply Air Blower Replacement