Page 1
INSTALLATION
INSTRUCTIONS
Table of Contents
Unit Dimensions ..........................................................2
Roof Curb Dimensions ................................................4
Adjustable Roof Curb Dimensions...............................6
Installation ...................................................................7
Venting.........................................................................9
Duct System ..............................................................10
Condensate Drain......................................................11
Gas Piping ................................................................. 11
Electrical Wiring .........................................................12
Heating Start-Up .......................................................13
Operation ...................................................................15
Maintenance – LRP16GE ..........................................18
Blower Performance ..................................................20
Wiring Diagram – LRP16GE .....................................21
LRP16HP ...................................................................22
Sequence of Operation..............................................23
Defrost System ..........................................................25
System Performance .................................................27
Maintenance – LRP16HP ..........................................27
Wiring Diagram – LRP16HP ......................................30
LRP16G(E/X) / LRP16HP UNITS
RESIDENTIAL PACKAGED UNITS
Gas/Electric – Heat Pump
508202-01
8/2021
©2021 Lennox Industries Inc.
Dallas, Texas, USA
THIS MANUAL MUST BE LEFT
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 licensed professional HVAC installer or
equivalent, or service agency.
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.
CAUTION
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take
care while handling this equipment and wear gloves and
protective clothing.
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