Harsco Industrial 1004905923 Installation & Owner's Manual page 7

2.5.2 Burn, Fire, and Explosion Hazards
NOTE
Make sure this union is
tight before closing cabinet
cover after servicing boiler.
c 1998 HCS, Inc. 800-748-0241
Reorder No. 8032-02NHAK

Burn, fire, and explosion hazards! Installation must be in strict conformance to all applicable codes and
standards including NFPA 54/ANSI Z223.1 and/or CAN/CSA- B149.1.

Hazard from incorrect fuels! Possible fire, explosion, overheating, and damage. Do not use any fuels except
the design fuel for the unit.

Overfire hazards! High pressure in gas or propane supply could result in overfiring of other devices 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 appliance.

Burn hazard! Possible hot surfaces. Do not touch the stack during firing operations. Use only factory
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. Unburned fuel may linger
in the combustion chamber, vent lines, or elsewhere.

Gas leak hazard! Make sure all connections to main burner are tight when reassembling the burner.

Gas leak hazard! All threaded gas connections must be made using a pipe compound that is resistant 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 personnel 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.
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 recommended.

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 factory-trained personnel.
NOTE
When opening leak test valves,
always follow instructions in
operation and safety manual.
c
1998 HCS, Inc. 800-748-0241 Reorder No. 8032-01NHPK
®
MODU-FIRE Forced Draft Gas-Fired Boiler 2500-3000
c
1998 HCS, Inc. 800-748-0241
Possible malfunction of regulators and/or gas valves.
7
WARNING
!
Improper use may
result in fire or injury.
Read instructions/safety
manual before installing,
operating or servicing boiler.
Reorder No. 6020-V2WHPK