Lennox KCB120 - User Manual

©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 KCB120 Specifications

General

Brand	Lennox
Model	KCB120
Category	Air Conditioner
Language	English

Summary

Unit Dimensions and Identification

Unit Parts Arrangement

Diagrams showing component layout for KG and KC units.

Safety and Installation Guidelines

Unit Clearances and Support

Required spacing around the unit for proper operation and maintenance.

Rigging and Lifting Procedures

Procedures for safely lifting and moving the unit.

Plumbing and Gas Connections

Condensate Drain Connections

Instructions for connecting and managing condensate drains.

Gas Piping and Pressure Testing

Guidance on connecting gas lines and performing pressure tests.

Electrical System Setup

High Altitude Derate Adjustments

Instructions for adjusting unit performance at high altitudes.

Electrical Power and Control Wiring

Guidelines for connecting unit power and control wiring.

Blower System Operation

Blower Operation and Adjustment

How to operate, adjust, and access the blower system.

Blower Belt Tension and Alignment

Guidelines for proper blower belt tension, alignment, and checks.

Performance Data and Start-Up

Blower Performance Data Tables

Tables showing blower RPM, BHP, and CFM at various static pressures.

Cooling Start-Up Procedures

Steps for initiating and verifying cooling operation.

Gas Heat Start-Up Sequence

Step-by-step guide for initiating gas heating operation.

Service and Maintenance

Filter Maintenance and Replacement

Guidelines for checking, cleaning, and replacing air filters.

Burner and Inducer Maintenance

Procedures for inspecting and cleaning burners and inducer.

Coil and Blower Cleaning

Instructions for cleaning evaporator coils, condenser coils, and blower wheels.