Trane AUH1B080A9421B User Manual

Upflow/ Horizontal, Downflow/ Horizontal,
Gas-Fired, Direct Vent Condensing
Furnaces
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT — This Document is customer property and is to remain with this unit.
Please return to service information pack upon completion of work.
Installer’s Guide
*__First letter may be “A” or “T”
UPFLOW
*UH1
UPFLOW/HORIZONTAL
A341624P13
*UH1
*UH1B040A9241A
*UH1B060A9361A
*UH1B080A9421B
*UH1C080A9601A
*UH1C100A9481A
*UH1D100A9601A
*UH1D120A9601A
*DH1B040A9241A
*DH1B065A9421A
*DH1C085A9481A
*DH1D110A9601A
*DH1
DOWNFLOW
DOWNFLOW/HORIZONTAL
*DH1
18-CD29D1-11

Trane AUH1B080A9421B Specifications

General

Model	AUH1B080A9421B
Heating Capacity	80, 000 BTU
Blower Type	Variable Speed
Fuel Type	Natural Gas
Blower Motor	ECM
Ignition	Hot Surface Ignition
Stages	Two-Stage
Filter Size	16 x 25 x 1 inches

Summary

SAFETY SECTION

INSTALLATION INSTRUCTIONS

Venting System and Condensate Drainage

Details venting materials, methods, horizontal venting, and condensate drain procedures.

Electrical, Gas Piping, and Startup Procedures

Guides on wiring, gas piping, input checks, and initial startup procedures.

Abnormal Conditions and Error Codes

Lists common issues, troubleshooting steps, and IFC error flash codes for furnace operation.

GENERAL VENTING GUIDELINES

Venting Requirements and CO Hazards

Covers CO hazards, positive pressure systems, and essential vent system requirements.

GAS PIPING INSTALLATION

Gas Piping Codes, Regulations, and Pressure Testing

COMBUSTION AND INPUT ADJUSTMENT

Combustion Checks and Gas Valve Adjustment

MANIFOLD PRESSURE AND ORIFICE SELECTION

Pressure Adjustment and Orifice Changes for Altitude

HIGH ALTITUDE DERATING

Altitude Derate and Orifice Selection

FURNACE STARTUP PROCEDURES

FURNACE OPERATION AND SAFETY

Sequence of Operation and Safety Switches

ABNORMAL CONDITIONS AND TROUBLESHOOTING

INTEGRATED FURNACE CONTROL ERROR CODES