Armstrong G2D80CT - User Manual

# 45465K005 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 ............................................ 19
OPERATION ........................................ 20
MAINTENANCE ................................... 25
CONTROL DIAGNOSTICS .................. 26
REPAIR PARTS .................................... 27
WIRING DIAGRAMS ............................ 28
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
G1D80BT, G1D80BR, G2D80CT, & G2D80CR
80% Gas Furnace
with System Sentry™ Control System
*45465K005*

Summary

General Safety Information

General Safety Precautions

Essential safety rules and precautions for furnace installation and operation.

Location and Air Requirements

Combustion and Ventilation Air

Requirements for providing adequate air for combustion and ventilation.

Combustion Air Quality and Venting

Venting System Requirements

Guidelines for the furnace's fan-assisted combustion venting system.

Sidewall Vent Terminal Clearances

Direct Vented Furnace Clearances

Clearances required for sidewall vent terminals on direct-vented furnaces.

Non-Direct Vented Furnace Clearances

Clearances for sidewall vent terminals on non-direct-vented furnaces.

Gas Piping and Electrical Safety

Gas Supply Piping Requirements

Guidelines for gas supply piping size, connections, and testing.

Electrical Wiring Safety

Safety precautions for electrical connections and power supply.

Start-Up and Shutdown Procedures

Lighting Instructions and Safety

Critical safety instructions and steps for starting the furnace.

Furnace Operation Sequences

Operation Sequences for G1 D and G2 Models

Step-by-step operation sequence for heating, fan, and cooling.

Gas Input Adjustment

Gas Input Adjustment Procedures

Procedures for measuring and adjusting gas input for specific models.

Gas Pressure and Altitude Adjustments

Manifold Pressure vs. Altitude Adjustments

Tables showing manifold pressure adjustments based on altitude.

Temperature Rise and High Altitude

Altitude Adjustment for G2 Models

Manifold Pressure vs. Altitude for G2 Models

Table for manifold pressure adjustments based on altitude for G2 models.

Control Diagnostics and Fault Codes

Troubleshooting and Fault Codes

Visual checks and interpretation of LED fault codes for diagnostics.

Wiring Diagrams

G1 D80 BT;G1 D80 BR Connection Diagram

Wiring diagram for G1D80BT and G1D80BR models.

Schematic Diagrams

G1 D80 BT;G1 D80 BR Schematic Diagram

Connection Diagrams for G2 Models

G2 D80 CT;G2 D80 CR Connection Diagram

Wiring Schematics

G2 D80 CT;G2 D80 CR Wiring Schematic

Armstrong G2D80CT Specifications

General

Brand	Armstrong
Model	G2D80CT
Category	Furnace
Language	English