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2) The boiler must be installed on a hard level surface. This surface may be combustible.
3) Do not install this boiler in a location where gasoline or other flamable vapors or liquids will be stored or used.
4) Do not install this boiler in an area where large amounts of airborne dust will be present, such as a workshop.
5) The boiler should be located as close to the chimney as possible.
6) Do not install this boiler over carpeting. This may cause a fire.
7) Do not install this boiler directly on a surface that may get wet. Raise the boiler on a pad.
8) Protect ignition system components from sources of water that may spray, drip or rain on them during installation or service.
9) Level boiler using shims as necessary.
•
INSUFFICIENT COMBUSTION AIR SUPPLY MAY RESULT IN THE PRODUCTION AND
RELEASE OF DEADLY CARBON MONOXIDE (CO) INTO THE HOME WHCH CAN CAUSE
SEVERE PERSONAL INJURY OR DEATH.
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THIS BOILER IS NOT DESIGNED FOR USE IN A SPACE THAT IS DEPRESSURIZED
RELATIVE TO THE OUTDOORS. OPERATING THIS BOILER IN A DEPRESSURIZED SPACE
MAY CAUSE SEVERE PERSONAL INJURY OR DEATH.
Sufficient fresh air must be supplied for combustion, ventilation, and flue gas dilution. Provisions for an adequate fresh air
supply must be made in accordance with local codes, or in the absence of such codes, the National Fuel Gas Code (NFPA 54/
ANSI Z223.1). In Canada, refer to the Natural Gas and Propane Installation Code (CAN/CSA 149.1).
The National Fuel Gas Code describes three basic ways to supply this boiler with adequate fresh air:
Indoor Combustion Air – Combustion air is drawn into the boiler room from other parts of the building and from the outdoors
through natural infiltration (cracks under doors, etc). This method can not be used in all cases – see discussion below.
Outdoor Combustion Air – Combustion air is brought directly into the boiler room from outdoors through ducts or grills sized
and installed specifically for this purpose.
Mechanical Combustion Air Supply – Combustion air is brought into the room from outdoors using a blower system that is
engineered specifically for this purpose.
Each of the above methods is described in more detail in the following sections. The National Fuel Gas Code also describes
some acceptable variations on these techniques that do not appear here.
1) Total the input of all appliances in the boiler room in thousands of BTU/hr.
2) Find the volume of the boiler room in cubic feet:
Volume (ft
) = Length (ft) x Width (ft) x Height (ft)
3
If the boiler room adjoins another room and there is no door present between these two rooms, add the volumes of the
V Air for Combustion and Ventilation
WARNING
Using the Indoor Combustion Air Method
6
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