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MACH® Series
Gas-Fired Boiler Safety
Page 3
• Burn hazard! Hot fluids. Use caution when
servicing or draining boiler.
• Fire and explosion hazards! Use caution when
servicing burner. Propane (LPG) is heavier than
air and may linger in the combustion chamber,
vent lines, or elsewhere.
• Gas leak hazard! Make sure the burner is installed
correctly and burner hood is securely fastened
following any maintenance performed on them.
These connections cannot be tested after the
burner is assembled.
• 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 and obtain immediate assistance
from trained service 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
regulator.
• Overfire hazard! Possible fire and explosion.
Possible malfunction of regulators and/or gas
safety shut off / control 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 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.
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 beneath
the lifted load. Refer to approximate weights in
the table below:
Boiler Size Weight in Pounds
300,000 Btu 354
450,000 Btu 440
750,000 Btu 650
900,000 Btu 700
1,050,000 Btu 750
• Bump hazard from overhead ductwork and piping.
Install components with adequate vertical
clearance.
2.5.4 Chemical Hazards
General Warning
• Chemical hazards from cleaning products. Use
caution when cleaning the system. The use of
professional assistance is recommended. Use safe
procedures for the disposal of all cleaning
solutions.
• Combustion Condensate – a pH of approximately
4 to 5 can be expected. Use PVC or CPVC piping.
Collection and disposal must be in accordance
with all applicable regulations.