Lennox HS29-060

Page 1
©1998 Lennox Industries Inc.
Corp. 9802−L3
HS29
Service Literature
Revised 04−2004
HS29 SERIES UNITS
The HS29 is a residential split-system condensing unit.
Condensing coil size, circuiting and air volume result in a
minimum SEER rating of 10.0. The series is designed for
use with an expansion valve or RFCIV system in the in-
door unit. However, the HS29−651 and −060 use only the
TXV system.
The HS29−141 and −012 utilizes a rotary compressor. Other
HS29 units (−018, −024−2 and −211 through −653) utilize a recip-
rocating compressor. All compressors are hermetically sealed
for trouble-free operation and long service life. Compressor
components are spring-mounted within the sealed housing.
The compressor is installed in the unit on resilient rubber
mounts to assure quiet, vibration-free operation. A built-in
protection device assures protection from excessive
current and temperatures.
HS29−460 through HS29−650 models are furnished with
crankcase heaters to assure proper compressor lubrica-
tion at all times. The heater is temperature-actuated and
operates only when required. HS29−024−3 and HS29−030
through −060 units utilize a scroll compressor. The scroll oper-
ates like a standard compressor but it is unique in the way it
compresses refrigerant.
Several models are available in sizes ranging from 1 through 5
tons.
WARNING
Refrigerant can be harmful if it is inhaled. Refrigerant
must be used and recovered responsibly.
Failure to follow this warning may result in personal
injury or death.
IMPORTANT
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, person-
al injury or loss of life. Installation and service must
be performed by a qualified installer or service
agency.
This manual is divided into sections which discuss the
major components, refrigerant system, charging proce-
dure, maintenance and operation sequence.
All specifications in this manual are subject to change.
TABLE OF CONTENTS
Specifications 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Data 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I Unit Information 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
II Unit Components 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
III Refrigerant System 8. . . . . . . . . . . . . . . . . . . . . . . . . .
IV Charging 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V Maintenance 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VI Wiring Diagrams and Operation Sequence 15. . . . . .

Lennox HS29-060 Specifications

General

Model	HS29-060
Type	Heat Pump
Cooling Capacity (BTU/h)	60, 000
Refrigerant	R-410A
Compressor Type	Scroll
Number of Stages	2
Sound Level (dBA)	76
Voltage (VAC)	208/230
Phase	1
Maximum Overcurrent Protection (A)	50
Liquid Line Size (in)	3/8
Suction Line Size (in)	7/8

Summary

Unit Information and Series Overview

Safety Warnings and Precautions

Important safety warnings regarding refrigerant handling and proper installation/service procedures.

Electrical Data for HS29 Units

Electrical Specifications by Model

Comprehensive electrical data including voltage, amps, and breaker sizes for numerous HS29 models.

Unit Information and Components

Electrical Hazard Warning

Critical safety warning about electrical shock hazard when servicing the unit.

Scroll Compressor Operation and Maintenance

Three-Phase Compressor Rotation Procedure

Step-by-step instructions to ensure correct rotation and operation of three-phase scroll compressors.

Refrigerant System Plumbing

Service Valve Operation and Safety

Service Valve Access and Function

Explains access to service valves, gauge ports, and schrader valve function.

Danger: Backseating Service Valves

Critical warning against backseating service valves beyond the retaining ring due to explosion risk.

Closing LiquidSuction Line Service Valves

Refrigerant Charging Procedures

Charging System Cautions

Important cautions regarding vacuum operation and the use of dry nitrogen during charging.

Pumping Down the System

Leak Testing Procedure

Detailed steps for performing leak testing on the refrigerant lines and coil.

Evacuating the Refrigerant System

Instructions for properly evacuating the system to achieve deep vacuum.

Refrigerant Charge Adjustment and Methods

Refrigerant Charging Methods

Procedures for weighing refrigerant or adjusting charge based on line set length.

Expansion Valve System Charging

Guide for charging expansion valve systems using liquid line temperature approach.

Charging Accuracy Requirements

RFCIV System Charging

Guide for charging RFCIV systems using subcooling method.

Routine Maintenance Procedures

Maintenance Safety Precautions

Critical warning about disconnecting electrical power before performing any maintenance.

Outdoor Unit Cleaning and Inspection

Wiring Diagrams and Operating Sequence

Single-Phase Sequence (Non-Scroll)

HS29 P Voltage Operation Sequence

Single-Phase Sequence (ReciprocatingRotary)

HS29-2-3 Single-Phase Operation

Three-Phase Operating Sequence

Three-Phase Wiring and Sequence

HS29 Y, G, J Voltage Sequence

Single-Phase Sequence (Scroll Compressors)

HS29-1 Single-Phase Scroll Sequence

HS29 P Voltage Scroll Sequence

Single-Phase Sequence (Scroll Compressors, Models 2 & 3)

HS29-2-3 Single-Phase Scroll Sequence