Lennox KCA092

©2017
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....................................
Safety Page 4.....................................
Unit Support Page 5................................
Duct Connection Page 5............................
Rigging Unit For Lifting Page 5.......................
Condensate Drains Page 6..........................
Connect Gas Piping Page 7.........................
Pressure Test Gas Piping Page 8.....................
High Altitude Derate Page 9.........................
Electrical Connections Page 9.......................
Unit Power-Up Page 10..............................
INSTALLATION
INSTRUCTIONS
KGA/KCA092
KGB/KCB092
KGA/KCA102
KGB/KCB102
KGA/KCA120
KGB/KCB120
KGB/KCB150
(7.5 Ton)
(7.5 Ton)
(8.5 Ton)
(8.5 Ton)
(10 Ton)
(10 Ton)
(12-1/2 Ton)
GAS AND COOLING PACKAGED UNITS
507118-07
8/2017
Supersedes 507118-06
Blower Operation and Adjustments Page 10............
Cooling Start-Up Page 18............................
Gas Heat Start-Up Page 28...........................
Heating Operation and Adjustments Page 29............
Electric Heat Start-Up Page 29........................
Supply Air Inverter Start-Up Page 30...................
Service Page 32....................................
RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE
KGA SHOWN

Lennox KCA092 Specifications

General

Brand	Lennox
Model	KCA092
Category	Air Conditioner
Language	English

Summary

UNIT CLEARANCES

Connect Gas Piping (Gas Units)

Pressure Test Gas Piping (Gas Units)

Electrical Connections

POWER SUPPLY

CONTROL WIRING

Unit Power-Up

General

Blower Operation and Adjustments

Cooling Start-Up

Operation

Procedures for initiating cooling operation and stages.

Refrigerant Charge and Check

How to check and adjust refrigerant charge for optimal cooling.

C-Compressor Controls

Gas Heat Start-Up (Gas Units)

Placing Unit In Operation

Steps to place the unit in operation for gas heating.

Gas Valve Operation

Details on the gas valve operation and types.

Heating Operation and Adjustments (Gas Units)

Heating Sequence of Operation

Sequence of operations for gas heating.

Ignition Control Diagnostic LEDs

Limit Controls

Electric Heat Start-Up (KCA Units)

Inverter Start-Up

General

Overview of inverter-driven blower operation.

Set Maximum Blower CFM

Procedure to set the maximum blower CFM.

Set Blower Speed During Ventilation

Adjusting blower speed for ventilation.

Set Damper Minimum Position (Units W Economizer)

Setting minimum damper position for units with economizers.

Service

Burners (Gas Units)

Procedures for examining and cleaning gas burners.

Combustion Air Inducer

Maintenance and cleaning of the combustion air inducer.

Flue Passageway and Flue Box

Evaporator Coil Cleaning

Condenser Coil Cleaning

Supply Air Blower Wheel