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Lennox KCA036

Lennox KCA036
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©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

Table of Contents

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Lennox KCA036 Specifications

General IconGeneral
BrandLennox
ModelKCA036
CategoryAir Conditioner
LanguageEnglish

Summary

Gas Piping Connection and Testing

Pressure Test Gas Piping

Electrical Connections

Power Supply Connection

Details power supply connections and voltage adjustments.

Control Wiring Installation

Thermostat Location Guidance

Guidance on choosing the optimal location for the thermostat.

Control Wiring Procedure

Instructions for routing and connecting control wires.

Blower Operation and Adjustments

Blower Operation Modes

Basic blower operation modes and thermostat control.

Determine CFM - Direct Drive Blowers

How to determine airflow volume for direct drive blowers.

Blower Speed Adjustments - Direct Drive

Determine CFM - Belt Drive Blowers

Blower Belt Adjustment Procedures

Belt Tension Adjustment (M Volt Units)

Check Belt Tension (No Belt Tensioner)

Cooling Start-Up Procedures

Cooling Operation Modes

Describes cooling operation based on thermostat demand.

Voltage Phasing for Three-Phase Compressors

Ensures correct compressor and blower rotation for three-phase units.

Refrigerant Charge Check - FinTube Coils

Refrigerant Charge Check - All-Aluminum Coils

Approach Method for Charge Verification

Compressor Control Systems

Freezestat (S49) Operation

Protects evaporator coil from freezing during low temperatures.

Gas Heat Start-Up Procedure

Placing Unit in Operation

Initial steps to place the unit in operation.

Gas Valve Operation Guide

Explains how to operate the gas valve.

Heating Operation and Adjustments

Electric Heat Start-Up

Supply Air Blower Replacement Procedures

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