Trane S8X1D120M5PSAB 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 2020
1188--CCEE0044DD11--11DD--EENN
Upflow/Downflow/Horizontal
Gas-Fired, 1–Stage and 2–Stage Induced Draft Furnaces with
High Efficiency Motor
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Single Stage
S8X1A026M2PSAB
S8X1A040M3PSAB
S8X1B040M2PSAB
S8X1B060M3PSAB
S8X1B060M4PSAB
S8X1B080M4PSAB
S8X1C080M5PSAB
S8X1C100M5PSAB
S8X1D120M5PSAB
Two Stage
S8X2A040M3PSAB
S8X2B060M3PSAB
S8X2B060M4PSAB
S8X2B080M4PSAB
S8X2C080M5PSAB
S8X2C100M5PSAB
S8X2D120M5PSAB
S8X1
S8X2
NNoottee:: This installer’s Guide 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.
18-CE04D1-1D-EN
Installer’s Guide

Trane S8X1D120M5PSAB Specifications

General

Brand	Trane
Model	S8X1D120M5PSAB
Category	Furnace
Language	English

Summary

Furnace Installation Guidelines

Safety Practices and Precautions

Essential safety measures for furnace installation, servicing, and operation.

Locations and Clearances

Furnace General Installation Procedures

Gas Piping

High Altitude Derate

Air for Combustion and Ventilation

Electrical and Wiring

Electrical Connections

Instructions for making electrical connections, emphasizing polarity sensitivity and grounding.

Field Wiring Diagrams

Wiring diagrams for S8X1 single-stage and S8X2 two-stage heating thermostats.

General Start-up and Adjustment

Preliminary Inspections

Checks before start-up, including gas line purging and leak detection.

Lighting Instructions

Steps for unit start-up and operation, including ignitor and gas valve sequences.

Control and Safety Switch Adjustment

Procedures for checking limit switches and safety devices during initial startup.

Furnace Combustion Air Exhaust Options

Combustion Air Conversions

Setting Airflow

Furnace Airflow vs. Static Pressure

Table correlating furnace airflow (CFM) with external static pressure for various models and taps.

Fault Code Recovery

Fault Code Recovery

Sequence of Operation S8X1/S8X2

1st Stage Gas Heating

Detailed sequence of operation for the first stage of gas heating for S8X1 and S8X2 furnaces.

2nd Stage Gas Heating (S8X2 Only)

Sequence of operation for the second stage of gas heating, specific to S8X2 models.

Cooling Operations

Sequence of operation for single and two-stage cooling for S8X1 and S8X2 furnaces.

Heat Pump Operations