06/09
506238−01
*2P0609*
*P506238-01*
Page 1
E
2009 Lennox Industries Inc.
Dallas, Texas, USA
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause personal injury, loss of life,
or damage to property.
Installation and service must be performed by a
licensed professional installer (or equivalent) or a
service agency.
CAUTION
Physical contact with metal edges and corners
while applying excessive force or rapid motion can
result in personal injury. Be aware of, and use
caution when working near these areas during
installation or while servicing this equipment.
IMPORTANT
The Clean Air Act of 1990 bans the intentional
venting of refrigerant (CFCs, HCFCs AND HFCs) as
of July 1, 1992. Approved methods of recovery,
recycling or reclaiming must be followed. Fines
and/or incarceration may be levied for
noncompliance.
IMPORTANT
This unit must be matched with an indoor coil as
specified in Lennox’ Engineering Handbook.
Coils previously charged with HCFC−22 must be
flushed.
INSTALLATION
INSTRUCTIONS
Dave Lennox Signature
®
Collection XPG20
SunSource
t
Comfort
System
SOLAR ASSIST HEAT PUMPS
506238−01
06/09
Supersedes 05/09
Table of Contents
Unit Dimensions
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Field Supplied Components
2
. . . . . . . . . . . . . . . . . . . . .
Unit Parts Arrangement
3
. . . . . . . . . . . . . . . . . . . . . . . .
Control Panel Parts Arrangement
3
. . . . . . . . . . . . . . . .
Shipping and Packing List
4
. . . . . . . . . . . . . . . . . . . . . .
System Overview
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Gauge Set
4
. . . . . . . . . . . . . . . . . . . . . . . . . .
Recovering Refrigerant from Existing System
6
. . . . .
Removing Existing Outdoor Unit
6
. . . . . . . . . . . . . . . . .
Positioning New Outdoor Unit
7
. . . . . . . . . . . . . . . . . . .
Removing and Installing Panels
8
. . . . . . . . . . . . . . . . .
New or Replacement Line Set
9
. . . . . . . . . . . . . . . . . . .
Brazing Connections
11
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Flushing the System
13
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Leak Testing the System
15
. . . . . . . . . . . . . . . . . . . . . . .
Evacuating the System
17
. . . . . . . . . . . . . . . . . . . . . . . . .
Servicing Unit Delivered Void of Charge
18
. . . . . . . . . .
Electrical 18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Solar Module Setup and Connections
20
. . . . . . . . . . . .
Unit Start−Up
24
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing Charge
24
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding or Removing Refrigerant
26
. . . . . . . . . . . . . . . .
System Operations
29
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lennox System Operation Monitor (LSOM)
29
. . . . . . .
LSOM Module and System Troubleshooting LEDs
30
.
Defrost System
33
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defrost Control Board Diagnostic LEDs
39
. . . . . . . . . . .
Maintenance
40
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Homeowner Information
40
. . . . . . . . . . . . . . . . . . . . . . . .
Field Operational Checklist
42
. . . . . . . . . . . . . . . . . . . . .
Start−Up and Performance Checklist
43
. . . . . . . . . . . . .
Litho U.S.A.
