Owner`s manual

506891-01 Page 1 of 65Issue 1235
This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in
manuals, be alert to the potential for personal injury or death.
This manual must be left with the homeowner for future reference.
INSTALLATION INSTRUCTIONS
A80US2V
Warm Air Gas Furnace
Upflow / Horizontal Left and Right Air Discharge
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 installer (or equivalent), service
agency or the gas supplier.
WARNING
As with any mechanical equipment, personal injury can
result from contact with sharp sheet metal edges. Be
careful when you handle this equipment.
CAUTION
TABLE OF CONTENTS
Unit Dimensions ............................................................ 2
A80US2V Parts Arrangement ....................................... 3
A80US2V Gas Furnace ................................................ 4
Shipping and Packing List ............................................ 4
Safety Information ......................................................... 4
Use of Furnace as a Construction Heater .................... 5
General ......................................................................... 6
Combustion, Dilution, Ventilation Air ............................. 6
Setting Equipment ........................................................ 9
Filters .......................................................................... 12
Duct System ................................................................ 12
Venting ........................................................................ 13
Gas Piping .................................................................. 23
Electrical ..................................................................... 25
Thermostat .................................................................. 27
Unit Start-Up ............................................................... 30
High Altitude ................................................................ 32
Gas Pressure Adjustment ........................................... 33
Sequence of Operation ............................................... 33
Other Unit Adjustments ............................................... 33
Maintenance ............................................................... 36
Repair Parts List ......................................................... 40
Wiring Diagram ........................................................... 41
Wiring Schematic ........................................................ 42
Start Up & Performance Check List ............................ 43
A thermostat is not included and must be ordered
separately.
A Comfort Sync™ thermostat must be used in
communicating applications.
In non-communicating applications, a traditional non-
communication thermostat may be used.
In all cases, setup is critical to ensure proper system
operation.
Field wiring for both communicating and non-
communicating applications is illustrated in these
instructions.
NOTICE
Manufactured By
Allied Air Enterprises LLC
A Lennox International, Inc. Company
215 Metropolitan Drive
West Columbia, SC 29170
(P) 506891-01
*p506891-01*

Summary of content (64 pages)