background image

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.

Summary of Contents for LGA042

Page 1: ...ice 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 Imm...

Page 2: ...S DISCONNECT OPTIONAL ECONOMIZER OPTIONAL 120V GFCI OUTLET OPTIONAL LGA LGC090 102 120 and 150 Parts Arrangement COMBUSTION AIR INDUCER 120V GFCI OUTLET Factory installed option BLOWER MOTOR CONDENSER...

Page 3: ...UBES BLOWERS CONDENSATE DRAIN FILTERS ECONOMIZER DAMPERS OPTIONAL CONTROL BOX 120V GFCI OUTLET Factory installed option DISCONNECT Factory installed option LGA LGC248 300H and 360 Parts Arrangement CO...

Page 4: ...errors can cause improper and dangerous operation Verify proper operation after servicing WARNING Danger of electrical shock explosion and fire Improper servicing could result in dangerous operation...

Page 5: ...HONEYWELL VR8205Q VR8305Q SERIES GAS VALVE Gas valve knob is shown in OFF position FIGURE 4 LOW FIRE ADJUSTMENT HIGH FIRE ADJUSTMENT INLET PRESSURE TAP MANIFOLD PRESSURE TAP 6 Wait five 5 minutes to c...

Page 6: ...n using the inspection port provided on the burner access panel Flue Passage and Vent Inspection Annually before heating season inspect the combustion air louvers vent cap heat exchanger burners and c...

Page 7: ...bearings so that a bead of grease appears at the seal lip contacts Manifold Pressures Manifold pressures are shown in table 2 Refer to figures 2 3 and 4 to locate pressure ports TABLE 2 MANIFOLD PRESS...

Page 8: ...and combustion air inducer gasket should also be replaced during reassembly Service Reminder Call a qualified service technician if the unit is inoperative Before calling always check the following t...

Reviews: