Armstrong Air G2D93CT User Manual

# 47904K005 Page 1
INSTALLATION INSTRUCTIONS
This furnace is not approved for installation in
a mobile home. Do not install this furnace in a
mobile home. Installation in a mobile home
could result in actions that could cause prop-
erty damage, personal injury, or death.
WARNING
Manufactured By
A.A.C.
A Lennox International Inc. Company
421 Monroe Street
Bellevue, OH 44811
TABLE OF CONTENTS
SAFETY ................................................. 2
INSTALLATION ...................................... 3
START-UP ............................................ 26
OPERATION ........................................ 27
MAINTENANCE ................................... 33
CONTROL DIAGNOSTICS .................. 34
REPAIR PARTS ................................... 35
WIRING DIAGRAMS............................ 36
Do not store combustible materials, including
gasoline and other flammable vapors and
liquids, near the furnace, vent pipe, or warm air
ducts. The homeowner should be cautioned that
the furnace area must not be used as a broom
closet or for any other storage purposes. Such
uses may result in actions that could cause
property damage, personal injury, or death.
WARNING
Improper installation, adjustment, alteration, service, or maintenance can cause injury or
property damage. Refer to this manual. For assistance or additional information, consult
a qualified installer, service agency, or the gas supplier.
WARNING
The installation of the furnace, wiring, warm air ducts, venting, etc. must conform to the requirements of the
National Fire Protection Association; the National Fuel Gas Code, ANSI Z223.1/NFPA No. 54 (latest edition) and
the National Electrical Code, ANSI/NFPA No. 70 (latest edition) in the United States; CSA B149.1 (latest edition)
Natural Gas and Propane Installation Codes and the Canadian Electrical Code Part 1, CSA 22.1 (latest edition)
in Canada; and any state or provincial laws, local ordinances (including plumbing or wastewater codes), or local
gas utility requirements. Local authorities having jurisdiction should be consulted before installation is made.
Such applicable regulations or requirements take precedence over the general instructions in this manual.
IMPORTANT
Save these instructions for future reference
G2D93CT, G2D93CU, G2D95CT, & G2D95CU
High Efficiency Multiposition Gas Furnace
with System Sentry™ Control System
*47904K005*

Armstrong Air G2D93CT Specifications

General

Brand	Armstrong Air
Model	G2D93CT
Category	Furnace
Language	English

Summary

SAFETY

Massachusetts Installation Requirements

Specific safety installation rules for Massachusetts.

INSTALLATION

Location, Inspection, and General Requirements

Proper placement, shipment inspection, and general installation steps.

Air, Clearances, and Venting Systems

Ensuring combustion air, clearances, and understanding venting requirements.

Venting Configurations and Pipe Sizing

Direct/non-direct vent types, horizontal/vertical runs, and pipe sizing.

Condensate, Pressure Switch, and Air Supply

Condensate disposal, pressure switch connection, and circulating air supply.

Gas Supply, Piping, and Electrical Wiring

Gas line connection, piping diagrams, and electrical wiring overview.

START-UP

Lighting and Safety Procedures

Instructions for safely starting and shutting down the furnace.

OPERATION

Sequence of Operation

Detailed description of heating, cooling, and fan operation sequences.

CONTROLS

Furnace Control Components

Explanation of pressure, rollout, limit, and other control switches.

Gas Input Adjustment and High Altitude

Checking/adjusting gas input pressure and high altitude considerations.

MAINTENANCE

Routine Maintenance Tasks

Cleaning filters, lubricating motors, and checking condensate systems.

CONTROL DIAGNOSTICS

Troubleshooting and Fault Codes

Using LED indicators and fault codes to diagnose system problems.

REPAIR PARTS

Component Groups and Accessories

Listing of available replacement parts and conversion kits.

WIRING DIAGRAMS

G2D93CT Connection Diagram

Schematics for G2D93CT model connections and blower speeds.

G2D95CT Connection Diagram

Schematics for G2D95CT model connections.