7
6.
Installation Clearances
Before installing, check for the following:
Install in accordance with relevant building and mechanical codes, as well as any local, state or
national regulations, or in the absence of local and state codes, to the National Fuel Gas Code
ANSI Z223.1/NFPA 54 – latest edition. In Canada, see NSCNGPIC for detailed requirements.
WARNING
Item
Distance from combustibles
• Maintain the following clearances
from both combustible and
non-combustible materials.
• There must be a clearance of 24" (600mm)
or more in front of the Flue terminal.
• This restriction will not be applied to an
area where an effective shield makes a
clearance of 24" (600mm) or more in
front of the exhaust outlet.
Check Illustration
• If possible, leave 8" (200mm) or more on
either side of the unit to facilitate inspection.
• If possible, leave 24" (600mm) or more
in front of the unit to facilitate maintenance
and service if necessary.
• If possible, leave 3" (75mm) or more
above and below the vent pipe to facilitate
inspection and repair if necessary.
Securing of space for
repair/inspection
24" (600mm)
or more
8" (200mm)
or more
Outdoor Clearances to Opening
into Any Building
Distance from
the side
12" (300mm)
or more
2" (50mm)
or more
12" (300mm)
or more
12" (300mm)
or more
12" (300mm)
or more
There must be no
building opening
within this area.
12" (300mm)
or more
Flue terminal
3" (75mm)
or more
3" (75mm)
or more
4" (100mm)
or more
8" (200mm)
or more
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