Trane S8X2D120M5PSAB 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 S8X2D120M5PSAB Specifications

General

Model	S8X2D120M5PSAB
Type	Gas Furnace
Heating Capacity	120, 000 BTU
Efficiency Rating	High Efficiency
Blower Motor	Variable Speed
Blower Motor Type	ECM
Stages	2
Fuel Type	Natural Gas
Ignition Type	Hot Surface Ignition
Vent Type	Direct Vent
Warranty	10 Year Registered Limited Warranty

Summary

Safety Section

Fire and Explosion Hazards

Warnings regarding gas leaks, flammable vapors, and manual ignition risks.

Carbon Monoxide Poisoning Hazards

Warnings about carbon monoxide risks from improper venting or door seals.

Furnace Installation Guidelines

Safety Practices and Precautions

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

Locations and Clearances

Guidelines for furnace placement, clearances to combustible materials, and service access.

Furnace General Installation

Gas Piping

Information and diagrams for connecting gas piping to the furnace.

Combustion and Input Check

Procedures for checking combustion air and input rate.

Gas Valve Adjustment

Steps for adjusting manifold pressure and orifice sizes.

High Altitude Derate

Procedures for adjusting furnace input for high altitude installations.

General Venting

Air for Combustion and Ventilation

Duct Connections

Electrical Connections

General Start-up and Adjustment

Furnace Combustion Air Exhaust Options

Integrated Furnace Control Menu

Setting Airflow

Setting Airflow Procedures

Integrated Furnace Control Display Codes

Sequence of Operation S8X1/S8X2

1st Stage Gas Heating Operation