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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.
Item
Required Clearances
From Heater
• Maintain the following clearance from
both combustible and non-combustible
materials.
Check Illustration
300mm (12") Indoor
900mm (36") Outdoor
600mm (24") Outdoor
100mm (4") Indoor
50mm (2") Indoor
600mm (24") Outdoor
• 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.
Securing of space for
repair/inspection
600mm
(24") or
more
200mm
(8") or
more
Min: 75mm (3")
• If the unit will be installed in the vicinity of a
permanent kitchen range or stove that has
the possibility of generating steam that
contains fats or oils, use a dividing plate or
other measure to ensure that the unit is not
exposed to air containing such impurities.
* The dividing plate should be of noncombust-
ible material of a width greater than the
water heater.
Exhaust hood
Range
Dividing plate
Water
heater
Cooking Equipment
WARNING
[ For N-0751M ]
200mm
(8") or
more
Min: 75mm (3")
07.1.5, 4:34 PMPage 7