Lennox HS29-012, Unit Information

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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 . . . . . .