Lennox LGA240 User Manual

10/08
*2P1008*
504,875M
*P504875M*
LGA/LGC036, 042, 048, 060, 072
LGA/LGC090, 102, 120, 150,
LGA/LGC156, 180, 210, 240, 300S
LGA/LGC248, 300H, 360
©2006
Litho U.S.A.
504,875M
10/2008
Supersedes 1/2006
WHAT TO DO IF YOU SMELL GAS:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings ex-
actly could result in serious injury
death or property damage.
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.
D Do not try to light any appliance.
D Do not touch any electrical switch; do not
use any phone in your building.
D Immediately call your gas supplier from a
neighbor’s phone. Follow the gas suppli-
er’s instructions.
D If you cannot reach your gas supplier, call
the fire department.
D Extinguish any open flames.
ROOFTOP
UNITS
READ ALL INSTRUCTIONS IN THIS MANUAL
AND RETAIN FOR FUTURE REFERENCE
LGA240 SHOWN
See unit nameplate for manufacturer
and address.
FBR113270
(3, 3−1/2, 4, 5, and 6 TONS)
(7−1/2, 8-1/2, 10, and 12-1/2 TONS)
(13, 15, 17-1/2, 20, and 25 TONS)
(20, 25, and 30 TONS)
D Leave the building immediately.

Lennox LGA240 Specifications

General

Model	LGA240
Refrigerant	R-410A
Voltage	208/230V
Phase	1
Stages	Single Stage

Summary

Safety Information

General Hazard Warnings

Covers explosion, fire, and general operational dangers associated with HVAC units.

Installation and Service Safety

Highlights risks from improper installation, adjustment, or maintenance.

Electrical Safety

Details dangers of electrical shock and the need to turn off power before service.

Fiberglass Wool Hazards

Information on health risks associated with fiberglass insulation exposure.

Gas Explosion Hazard

Warning regarding gas explosion risks and emergency shut-off procedures.

Wiring and Servicing Caution

Cautionary note about labeling wires during servicing to prevent operational errors.

Unit Operation Procedures

Safety Before Lighting

Essential safety checks and procedures to perform before attempting to light the unit.

Placing Unit Into Operation

Gas Valve Operation

Maintenance and Inspection

Unit Servicing and Components

Filter Servicing

Burner Cleaning Procedure