Trane S8B1B080M4PSC User Manual

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Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning
equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person
could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that
are attached to the equipment.
May 2022
SS88XXBB--SSVVXX000011--11AA--EENN
Upflow/Downflow/Horizontal
Gas-Fired, 1–Stage and 2–Stage Induced Draft Furnaces with
High Efficiency Motor
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Single Stage Two Stage
S8B1
S8X1
S8X2
S8B1A026M2PSC
S8B1A040M3PSC
S8B1B040M2PSC
S8B1B060M4PSC
S8B1B080M4PSC
S8B1C080M5PSC
S8B1C100M5PSC
S8B1D120M5PSC
S8X1A026M2PSC
S8X1A040M3PSC
S8X1B040M2PSC
S8X1B060M4PSC
S8X1B080M4PSC
S8X1C080M5PSC
S8X1C100M5PSC
S8X1D120M5PSC
S8X2A040M3PSC
S8X2B060M4PSC
S8X2B080M4PSC
S8X2C080M5PSC
S8X2C100M5PSC
S8X2D120M5PSC
NNoottee:: This Installation, Operation, and Maintenance is used for multiple furnace
families. Models may have a “T” in the 12th digit designating they meet
California less than 40 ng/J (NOx) emissions requirements.
NNoottee:: Graphics in this document are for
representation only. Actual model may
differ in appearance.
S8XB-SVX001-1A-EN
Installation, Operation, and Maintenance

Trane S8B1B080M4PSC Specifications

General

Model Number	S8B1B080M4PSC
Category	Furnace
Type	Gas
Heating Capacity	80, 000 BTU
Blower Motor	Variable Speed
Stages	Single Stage
Fuel Type	Natural Gas
AFUE	80%
BTU Input	80, 000 BTU
Motor Type	ECM
Efficiency	80% AFUE
Ignition Type	Hot Surface Ignition
Heat Exchanger Material	Aluminized Steel
Warranty	10-Year Limited Warranty
BTU Output	64, 000 BTU

Summary

Safety Section

Fire or Explosion Hazard

Warnings about gas leaks and ignition precautions.

Electrical Shock, Fire, or Explosion Hazard

Warnings about electrical safety during servicing.

Carbon Monoxide Poisoning Hazard

Warnings about proper venting to prevent CO release.

Furnace Installation Guidelines

Safety Practices and Precautions

Essential safety steps during installation and servicing.

Wiring Diagrams

Furnace General Installation

Gas Piping

Instructions for connecting the gas supply.

Combustion and Input Check

Gas Valve Adjustment

Venting

Return Air Filters

Electrical Connections

General Start-up and Adjustment

Furnace Combustion Air Exhaust Options

Integrated Furnace Control Menu

Integrated Furnace Control Display Codes

List and explanation of IFC error codes.

Fault Code Recovery

Setting Airflow

Troubleshooting

E01 Fault Code

Troubleshooting steps for internal IFC failure.

2.1 Fault Code

Diagnostic steps for flame sensing issues.

3.1 Fault Code

Diagnostic steps for pressure switch issues.

4.0 Fault Code

Troubleshooting for limit and rollout switch errors.

Constant Torque Motor Troubleshooting

Sequence of Operation

1st Stage Gas Heating

2nd Stage Gas Heating

Periodic Servicing Requirements