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 600mm
(24") 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 600mm (24") or more in
front of the exhaust outlet.
Check
Illustration
• If possible, leave 200mm (8") or more on
either side of the unit to facilitate inspection.
• If possible, leave 600mm (24") or more
in front of the unit to facilitate maintenance
and service if necessary.
• If possible, leave 75mm (3") or more
above and below the vent pipe to facilitate
inspection and repair if necessary.
Securing of space for
repair/inspection
600mm
(24") or
more
200mm
(8") or
more
Outdoor Clearances to Opening
into Any Building
Distance from
the side
300mm (12")
or more
50mm (2")
or more
There must be no
building opening
within this area.
300mm (12")
or more
Flue terminal
300mm (12")
or more
300mm
(12") or
more
300mm
(12") or
more
100mm (4")
or more
75mm (3") or more
75mm (3") or more
200mm
(8") or
more
