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MODU-FIRE® FORCED DRAFT
Gas-Fired Boiler Safety
• Overfire hazards! High pressure in gas or pro-
pane supply could result in overfiring of other de-
vices supplied from the same source.
• Fire and explosion hazards! Close the main gas
shutoff before servicing boiler.
• Fire and explosion hazards! Do not store or use
gasoline or other flammable vapors or liquids in
the vicinity of this or any other gas fired appli-
ance.
• Burn hazard! Possible hot surfaces. Do not touch
the stack during firing operations. Use only fac-
tory recommended vent components.
• Burn hazard! Hot fluids. Use caution. Allow
boiler to cool before servicing or draining boiler.
• Fire and explosion hazards! Use caution when
servicing burner or heat exchanger. Fuel may lin-
ger in the combustion chamber, vent lines, or
elsewhere.
•
Gas leak hazard! Make sure all connections to
main burner are tight when reassembling the
burner.
NOTE
Make sure this union is
tight before closing cabinet
cover after servicing boiler.
Reorder No. 8032-02NHAK
c
1998 HCS, Inc. 800-748-0241
• Gas leak hazard! All threaded gas connections
must be made using a pipe compound that is re-
sistant to liquefied petroleum. Do not use Teflon
tape on threaded gas piping.
• Gas leak hazard! Check entire gas train for leaks
after installation. If there is a smell of gas, shut
down the boiler, close all gas valves and obtain
immediate assistance from factory-trained per-
sonnel and/or your local fire department.
• Overfire hazard! Possible fire and explosion
from excess gas pressure. Make sure that gas
inlet pressure does not exceed 14 inches W.C. to
the boiler main gas valve.
• Overfire hazard! Possible fire and explosion.
Possible malfunction of regulators and/or gas
valves. Maintain all gas train components in
good condition. Do not alter wiring connections.
Annual inspection by factory-trained personnel
for proper set-up and operation is recom-
mended.
• Overfire and underfire hazards! Possible fire,
explosion, overheating, and component failure.
Do not attempt to adjust firing rate of the boiler.
The firing rate must be adjusted only by fac-
tory-trained personnel.
2.5.3 Crush Hazards
General Warning
• Lifting hazards! Use properly rated lifting
equipment to lift and position the boiler. The
load is unbalanced. Test balance before lifting 3
ft. above the floor. Do not allow personnel be-
neath the lifted load. Refer to approximate
weights in the table below:
Boiler Size Weight in Pounds
1,500,000 Btu 915
2,000,000 Btu 930
• Bump hazard from overhead piping. Install pip-
ing with adequate vertical clearance.
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