Lennox G1D93BC User Manual

# 45466K003 Page 1
INSTALLATION INSTRUCTIONS
G1D91BU, G1D93BC, G1D93BU, CG90CB, & CG90UB
High Efficiency 90+ Condensing Gas Furnace
Manufactured By
A.A.C.
A Lennox International Company
421 Monroe Street
Bellevue, OH 44811
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 con-
sulted before installation is made. Such applicable regulations or requirements take precedence over the
general instructions in this manual.
IMPORTANT
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 cau-
tioned 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
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
Improper installation, adjustment, alteration, service, or maintenance can cause
injury or property damage. Refer to this manual. For assistance or additional informa-
tion, consult a qualified installer, service agency, or the gas supplier.
WARNING
TABLE OF CONTENTS
SAFETY ................................................. 2
INSTALLATION....................................... 3
START-UP ............................................ 19
OPERATION ........................................ 20
MAINTENANCE ................................... 23
REPAIR PARTS .................................... 24
CONTROL SYSTEM DIAGNOSTICS .. 25
WIRING DIAGRAMS ............................ 26
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Lennox G1D93BC Specifications

General

Brand	Lennox
Model	G1D93BC
Category	Furnace
Language	English

Summary

INSTALLATION INSTRUCTIONS

SAFETY

INSTALLATION

Location

Clearances

Ensure adequate clearance around the furnace for servicing and proper operation as specified.

Combustion and Ventilation Air

Confined Space

Contaminated Combustion Air

Venting

Upflow Direct Vent – Horizontal Venting

Upflow Direct Vent – Vertical Venting

Upflow Non-Direct Vent - Horizontal Venting

Upflow Non-Direct Vent - Vertical Venting

Counterflow Direct Vent – Horizontal Venting

Counterflow Direct Vent – Vertical Venting

Counterflow Non-Direct Vent Horizontal Venting

Counterflow Non-Direct Vent Vertical Venting

Gas Supply and Piping

Electrical Wiring

START-UP

Lighting Instructions

Critical safety instructions and steps for lighting the furnace burners.

OPERATION

Sequence of Operation

Describes the step-by-step process of heating, cooling, and fan operation.

Controls

Details the function of various control components like pressure switch, limits, and blower board.

Checking and Adjusting Gas Input

Temperature Rise

Guidance on checking and adjusting blower speed to maintain correct temperature rise.

High Altitude

MAINTENANCE

Main Burners

Instructions for observing and cleaning main burners for proper flame appearance.

Filters

Condensate Collection and Disposal System

CONTROL SYSTEM DIAGNOSTICS

Troubleshooting

Initial visual checks and system observation for diagnosing problems.

Fault Code History Button