NR83 Installation Manual

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.

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

Distance from

the side

12" (300mm)

or more

2" (50mm)

or more

3" (75mm)

or more

3" (75mm)

or more

4" (100mm)

or more

8" (200mm)

or more