Lennox KHA240 User Manual

506393−01
*P506393-01*
11/10
*2P1110*
2010
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 qualified installer, ser-
vice agency or the gas supplier
CAUTION
Danger of sharp metallic edges. Can cause injury.
Take care when servicing unit to avoid accidental
contact with sharp edges.
INSTALLATION
INSTRUCTIONS
KHA180 (15-TON)
KHA240 (20-TON)
HEAT PUMP UNITS
506393−01
11/2010
Supersedes 10/2010
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
Table Of Contents
Dimensions Page 2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Arrangement Page 3. . . . . . . . . . . . . . . . . . . . .
Shipping And Packing List Page 3. . . . . . . . . . . . . . .
General Page 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Requirements Page 3. . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Support Page 4. . . . . . . . . . . . . . . . . . . . . . . . . . .
Duct Connection Page 5. . . . . . . . . . . . . . . . . . . . . . .
Rigging Unit For Lifting Page 5. . . . . . . . . . . . . . . . . .
Condensate Drains Page 5. . . . . . . . . . . . . . . . . . . . .
Electrical Connections Page 6. . . . . . . . . . . . . . . . . .
Unit Power−Up Page 7. . . . . . . . . . . . . . . . . . . . . . . . .
Blower Operation and Adjustment Page 8. . . . . . . .
Cooling Start−Up Page 12. . . . . . . . . . . . . . . . . . . . . . .
Defrost Control Board Page 14. . . . . . . . . . . . . . . . . . .
Heating Start−Up Page 15. . . . . . . . . . . . . . . . . . . . . . .
Service Page 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lennox KHA240 Specifications

General

Model Number	KHA240
Category	Heat Pump
Voltage	208/230
Refrigerant	R-410A
Phase	1

Summary

Electrical Connections

Power Supply

Instructions for connecting electrical power supply to the unit.

Control Wiring

Guidance on thermostat location and control wiring connections.

Unit Power-Up

Blower Operation And Adjustments

Three Phase Scroll Compressor Voltage Phasing

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

Blower Operation

Cooling Start-Up

Start-Up Procedure

Steps to initiate a first-stage cooling demand and unit operation.

Refrigerant Charge and Check

Guidelines for checking and verifying refrigerant charge.

Charge Verification

Approach Method - AHRI Testing

Compressor Controls

Defrost Control Board

Compressor Accumulated Run-Time Interval

Defrost Test Option

Diagnostic LEDs

Heating Start-Up

Service