Lennox KCB024

©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 KCB024 Specifications

General

Operating Voltage	208/230V
Phase	1
Refrigerant Type	R-410A
Cooling Capacity (BTU/h)	24000
Sound Level (Outdoor Unit)	72 dB

Summary

Installation Instructions

Parts Arrangement Diagrams

KG Series Parts Arrangement

Illustrates the layout of components within KG units.

KC Series Parts Arrangement

Illustrates the layout of components within KC units.

Unit Support and Ducting

Unit Support and Mounting Procedures

Guidance on supporting and mounting the unit.

Gas Piping and Bottom Drain Modification

Connecting Gas Supply Piping

Guidelines for connecting field-provided gas piping.

Gas Piping Procedures

Electrical Connections

Power Supply Connection

How to connect the main power supply to the unit.

Control Wiring and Thermostat Setup

Thermostat Location Recommendations

Guidance on optimal placement of the room thermostat.

Control Wiring Procedures

Steps for routing and connecting thermostat wires.

Blower Operation and Direct Drive CFM

Blower Operation Overview

How the blower operates with a thermostat.

Determining CFM - Direct Drive Blowers

Method to determine airflow volume for direct drive blowers.

Belt Drive Blower CFM and Belt Adjustment

Determining CFM - Belt Drive Blowers

Method to determine airflow volume for belt drive blowers.

Blower Belt Adjustment Procedures

Adjusting belt tension for optimal motor pulley performance.

Blower Belt Tensioning Methods

Cooling Start-Up Procedures

Compressor Voltage Phasing

Guidance on correct voltage phasing for 3-phase compressors.

Gas Heat Start-Up Procedures

Safety Precautions Before Lighting

Gas Valve Operation Guide

Heating Operation and Controls

Gas Heat Sequence of Operation

Service and Maintenance Procedures

Gas Unit Component Checks and Cleaning

Coil Cleaning and Compressor Notes