Page 1
02/04
*2P0204*
504,713M
*P504713M*
2002 Lennox Industries Inc.
Dallas, Texas
HPXA15 Outdoor Unit
HPXA15 outdoor units use R410A which is an ozone
friendly HFC refrigerant. This unit must be installed with a
matching indoor coil and line set as outlined in the Lennox
Engineering Handbook. HPXA15 outdoor units are de-
signed for use in expansion valve (TXV) systems only.
They are not designed to be used with other refrigerant flow
control devices. An expansion valve approved for use with
R410A has been shipped with the unit and must be
installed prior to operating the unit.
Shipping and Packing List
1 − Assembled HPXA15 outdoor unit
2 − Grommets (for liquid and vapor lines)
Check equipment for shipping damage. If you find any
damage, immediately contact the last carrier.
General Information
These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
who have jurisdiction before installation.
WARNING
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.
INSTALLATION
INSTRUCTIONS
HPXA15 SERIES UNITS
HEAT PUMP UNITS
504,713M
02/04
Supersedes 12/02
Table of Contents
HPXA15 Outdoor Unit
1
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Shipping & Packing List
1
. . . . . . . . . . . . . . . . . . . . . . . . .
General Information
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Arrangement
3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the Unit
3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Refrigerant Piping
6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flushing Existing Line Set & Indoor Coil
10
. . . . . . . . . .
Manifold Gauge Set
12
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Valves
12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leak Testing
13
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Evacuation
14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Start−Up
14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging 15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Operation
19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defrost System
19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance
21
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HPXA15 Check Points
21
. . . . . . . . . . . . . . . . . . . . . . . . .
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
IMPORTANT
This unit must be matched with an indoor coil as
specified in Lennox’ Engineering Handbook. Coils
previously charged with R22 must be flushed.
WARNING
This product and/or the indoor unit it is matched with
may contain fiberglass wool.
Disturbing the insulation during installation, mainte-
nance, or repair will expose you to fiberglass wool
dust. Breathing this may cause lung cancer. (Fiber-
glass wool is known to the State of California to
cause cancer.)
Fiberglass wool may also cause respiratory, skin,
and eye irritation.
To reduce exposure to this substance or for further
information, consult material safety data sheets
available from address shown below, or contact your
supervisor.
Lennox Industries Inc.
P.O. Box 799900
Dallas, TX 75379−9900
Litho U.S.A.
