09/07
505,361M
*2P0907*
*P505361M*
Page 1
2007 Lennox Industries Inc.
Dallas, Texas, USA
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
WARNING
Improper installation, adjustment, alteration,
service or maintenance can cause property damage,
personal injury or loss of life. Installation and
service must be performed by a qualified installer or
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.
INSTALLATION
INSTRUCTIONS
Merit
®
Series13HPD Units
1−½ to 5 TONS
HEAT PUMP UNITS
505,361M
09/07
Supersedes 504,943M
Table of Contents
Shipping and Packing List
1
. . . . . . . . . . . . . . . . . . . . . .
13HPD Outdoor Unit
1
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Dimensions
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Information
2
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Recovering Refrigerant from Existing System
4
. . . . .
Disconnecting and Removing Old Outdoor Unit
5
. . . .
Positioning New Outdoor Unit
5
. . . . . . . . . . . . . . . . . . .
New or Replacement Refrigerant Line Set
6
. . . . . . . .
Replacing Refrigerant Metering Device
8
. . . . . . . . . . .
Brazing Connections
9
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing for Leaks
10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Evacuating the System
11
. . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Connections
12
. . . . . . . . . . . . . . . . . . . . . . . . .
Start−Up Procedures
14
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Determining Charge Method
15
. . . . . . . . . . . . . . . . . . . .
System Operation
17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defrost System
17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance
18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Homeowner Information
20
. . . . . . . . . . . . . . . . . . . . . . . .
Start−Up and Performance Checklist
22
. . . . . . . . . . . . .
Shipping and Packing List
1 − Assembled 13HPD outdoor unit
Check equipment for shipping damage. If you find any
damage, immediately contact the last carrier.
13HPD Outdoor Unit
The Lennox 13HPD Heat Pumps, which will also be
referred to in this instruction as the outdoor unit, uses
HCFC−22 refrigerant. This unit must be installed with a
matching indoor unit and line set as outlined in the Lennox
Engineering Handbook. This unit is designed for use in
check thermal expansion valve (CTXV) and fixed orifice
systems.
Litho U.S.A.
