
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
READ ALL INSTRUCTIONS IN THIS MANUAL
FBR113270
A\tL't F-,R_*_A
AND RETAIN FOR FUTURE REFERENCE
j A WARNING
C US
/-18TEO
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
LGA240 SHOWN
_pu Technical
blications
Litho U.S.A.
@2006
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

EVAPORATOR COIL
FILTERS
ECONOMIZER
(OPTIONAL)
CONDENSER FAN
HEAT EXCHANGER
COMPRESSOR
COMBUSTION
AIRINDUCER
DRAIN
DISCONNECT BURNERS
(OPTIONAL) BLOWER
120V TB1
ECONOMIZER DAMPERS
(OPTIONAL)
DISCONNECT
(Factory-installed
option)
GAS VALVE
(OPTIONAL)
CONDENSER
COIL
(Factory-installed option)
DRAIN
COMPRESSORS
COMBUSTION AIR
INDUCER
BURNERS
HEAT EXCHANGER GAS VALVE
TUBES
Page 1

BLOWERS
BLOWER MOTOR,
CONTROL
CONDENSATE
DRAIN
120V GFCI OUTLET
(Factory-installedoption)
DISCONNECT
(Factory=installed
option)
HEAT EXCHANGER TUBES
CONDENSER
COILS
COMPRESSORS
(3COMPRESSORS ON
LG_LGC156&180UNITS)
BURNERS
COMBUSTION AIR
INDUCER
ECONOMIZER DAMPERS
(OPTIONAL)
BLOWER
MOTOR
CONDENSATE
DRAIN
HEAT EXCHANGER
TUBES
GAS VALVE
FILTERS COIL
EVAPORATOR
COMBUSTION AIR
INDUCER
BURNERS
CONDENSER FANS
CONDENSER
COILS
COMPRESSORS
(-248 AND -300H HAVE
4 COMPRESSORS)
Page 2