American Standard S9V2B040U3VSAB 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
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Upflow/Horizontal and Dedicated Downflow
Gas-Fired, Direct/Non-Direct Vent, 2–Stage
Condensing Variable Speed Furnaces with Variable Speed
Draft Inducer
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CAUTION
!
COIL REQUIREMENT!
Failure to follow this Caution could result in property damage or personal injury. 4GXC* and
4MXC* coils installed on upflow furnaces in vertical, horizontal left, or horizontal right
orientations without a factory installed metal drain pan shield must use a MAY*FERCOLKITAA
kit. Coils installed on upflow furnaces must have drain pans that are suitable for 400° F
(205°C) or have a metal drain pan shield. Downflow furnaces do not require a metal drain pan
shield or the use of the MAY*FERCOLKITAA kit. See Installer’s Guide for more information.
18-CE03D1-1F-EN
Installer’s Guide

American Standard S9V2B040U3VSAB Specifications

General

Brand	American Standard
Model	S9V2B040U3VSAB
Category	Furnace
Type	Gas
Efficiency Rating	96% AFUE
Stages	Two-stage
Blower Motor Type	Variable speed
Ignition Type	Hot Surface Ignition
Input BTU	40, 000
Output BTU	38, 400 BTU/h
Warranty	10 years limited

Summary

Furnace Installation Guidelines

Safety Practices and Precautions

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

Furnace General Installation

Gas Piping

Details on connecting gas piping, including important notes on factory defaults and component placement.

Combustion and Input Check

Procedures for checking combustion and input rates using gas flow tables and factors.

Gas Valve Adjustment

Duct Connections

Return Duct Connections

General guidelines and specific configurations for connecting return ductwork to upflow furnaces.

Electrical Connections

Field Wiring

Condensate Drain Instructions

General Start-up and Adjustment

Preliminary Inspections

Control and Safety Switch Adjustment

Furnace Combustion Air Exhaust Options

Integrated Furnace Control Menu

Integrated Furnace Control Display Codes

Sequence of Operation

1st Stage Gas Heating

Step-by-step process for 1st stage gas heating operation, including inducer and blower control.