01/08 505,366M
*2P0108* *P505366M*
Page 1
2008 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.
INSTALLATION
INSTRUCTIONS
Merit
®
Series13ACD Units
AIR CONDITIONER UNITS
505,366M
01/08
Supersedes 11/07
Table of Contents
Shipping and Packing List 1. . . . . . . . . . . . . . . . . . . . . .
13ACD Outdoor Unit 1. . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Dimensions 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Information 2. . . . . . . . . . . . . . . . . . . . . . . . . . .
Recovering Refrigerant from Existing System 4. . . . .
Removing Existing Outdoor Unit 5. . . . . . . . . . . . . . . . .
Positioning New Outdoor Unit 5. . . . . . . . . . . . . . . . . . .
New or Replacement Line Set 6. . . . . . . . . . . . . . . . . . .
Brazing Connections 8. . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing Indoor Unit Metering Device 9. . . . . . . . . . . .
Installing New Indoor Unit Metering Device 9. . . . . . . .
Testing for Leaks 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Evacuating the System 12. . . . . . . . . . . . . . . . . . . . . . . . .
Servicing Unit Delivered Void of Charge 13. . . . . . . . . . .
Electrical Connections 13. . . . . . . . . . . . . . . . . . . . . . . . .
Start−Up and Charging Procedures 14. . . . . . . . . . . . . . .
System Operation 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Homeowner Information 19. . . . . . . . . . . . . . . . . . . . . . . .
Start−Up and Performance Checklist 20. . . . . . . . . . . . .
Shipping and Packing List
Check the unit for shipping damage and listed times below
are intact. If damaged, or if parts are missing, immediately
contact the last shipping carrier.
1 Assembled outdoor unit
1 Refrigerant flow control kit (Fixed Orifice)
13ACD Outdoor Unit
13ACD Air Conditioners, which will also be referred to in
this instruction as the outdoor unit, uses HCFC−22
refrigerant. This outdoor unit must be installed with a
matching indoor unit and line set as outlined in the Lennox
13ACD Engineering Handbook.
This outdoor unit is designed for use in systems that use
one of the following refrigerant metering devices:
Thermal expansion valve (TXV)
Fixed orifice
Litho U.S.A.
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