Lennox LGA090 User Manual

See unit nameplate for manufacturer
and address.
504,875M
1/2006
Supersedes 1/2004
LGA/LGC036, 042, 048, 060, 072
(3, 3-1/2, 4, 5, and 6 TONS)
LGA/LGC090, 102, 120, 150,
(7-1/2, 8-1/2, 10, and 12-1/2 TONS)
LGA/LGC156, 180, 210, 240, 300S
(13, 15, 17-1/2, 20, and 25 TONS)
LGA/LGC248, 30OH, 360
(20, 25, and 30 TONS)
ROOFTOP
UNITS
FBR113270
LGA240 SHOWN
READ ALL INSTRUCTIONS IN THIS MANUAL
AND RETAIN FOR FUTURE REFERENCE
_pu Technical
blications
Litho U.S.A.
@2006
A\tL't F-,R_*_A
C US
/-18TEO
j A WARNING
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
Installation and service must be per-
formed by a qualified installer, ser-
vice agency or the gas supplier.
01/06
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Extinguish any open flames.
• Do not touch any electrical switch; do not
use any phone in your building.
• Leave the building immediately.
• Immediately call your gas supplier from a
neighbor's phone. Follow the gas suppli-
er's instructions.
• If you cannot reach your gas supplier, call
the fire department.
504,875M
IIIHIIIII11111IIIIIIIIII11111111111111111IIIIII

Lennox LGA090 Specifications

General

Brand	Lennox
Model	LGA090
Category	Air Conditioner
Language	English

Summary

Safety

Unit Operation

For Your Safety Read Before Lighting

Safety instructions to follow before lighting the furnace.

Gas Valve Operation

Instructions for operating various gas valve models for safe furnace ignition.

Service

Burner Flame

Guidance on inspecting burner flame for proper operation.

Servicing Filter

Procedures and guidelines for checking and replacing unit filters.

Burners

Steps for cleaning the burners to ensure proper unit operation.

Lubrication

Information regarding lubrication of unit motors and bearings.

Manifold Pressures

Details on manifold pressures and locations of pressure ports.

Combustion Air Inducer

Instructions for cleaning the combustion air inducer for optimal performance.

Flue Passageway and Flue Box

Steps for cleaning the flue passageway and flue box.

Service Reminder

Checklist to verify before calling for service technician assistance.

Repair Parts Listing

Information on how to order replacement parts for the unit.

Flue Passage and Vent Inspection