Allied A80US2V User Manual

508155-01 Issue 2108 Page 1 of 49
SERVICE MANUAL
A80US2V Gas Furnace
(P) 508155-01
*P508155-01*
Table of Contents
Technical Specications - A80US2V............................2
Parts Arrangement.......................................................5
Unit Components .........................................................6
Placement and Installation ........................................27
Start-Up .....................................................................27
Heating System Service Checks ...............................28
Typical Operating Characteristics .............................. 31
Maintenance ..............................................................32
Wiring and Sequence of Operation ...........................35
Field Wiring Applications with Conventional Thermostat
...................................................................................40
Program Unit Capacity Size Modes...........................44
Troubleshooting: Heating Sequence of Operation ....45
Troubleshooting: Cooling Sequence of Operation ..... 48
Troubleshooting: Continuous Fan Sequence of
Operation ...................................................................49
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.
Electric shock hazard.
Can cause injury or death. Before attempting
to perform any service or maintenance,
turn the electrical power to unit OFF at
disconnect switch(es). Unit may have
multiple power supplies.
WARNING
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.
CAUTION
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), service agency or the gas supplier.
WARNING

Allied A80US2V Specifications

General

Model	A80US2V
Heating Capacity	80, 000 BTU
Efficiency	80% AFUE
Fuel Type	Natural Gas
Vent Diameter	4 inches
Ignition Type	Direct Spark Ignition
Dimensions (H x W x D)	33 x 17.5 x 28.75 inches
Weight	130 lbs