Heatiator NNXT3933IL, NNXT4236IL NNXT3933I owner manual C. Clearances

C. Clearances

NOTICE: Install appliance on hard metal or wood surfaces extending full width and depth. DO NOT install directly on carpeting, vinyl, tile or any combustible material other than wood.

WARNING! Risk of Fire! Maintain specified air space clearances to appliance and vent pipe:

•Insulation and other materials must be secured to prevent accidental contact.

•The chase must be properly blocked to prevent blown insulation or other combustibles from entering and making contact with fi replace or chimney.

•Failure to maintain airspace may cause overheating and a fire.

1/2 in.

(13 mm)

1/2 in.

(13 mm)

Drywall

0 in.

Combustible flooring may be installed next to the front of the appliance.

Note: If the inside of the framed cavity is to be finished, the framing dimensions must include the finished surface. If drywall is to be attached to the rear wall, the depth must be measured from the drywall surface.

D

Clearance to Ceiling

30 in. (762 mm)

Object	36 in.
Combustible	(914 mm)

0 in. TO LEVEL OF STANDOFFS

	B
0 in.	C
	A

A

B

C

D

D

Model

Rough Opening

Rough Opening

Rough Opening

Rough Opening

Rough Opening

(Width)

(Height)

(Depth)

(DVP Pipe)

(SLP Pipe)

in.

mm

in.

mm

in.

mm

in.

mm

in.

mm

NNXT3933

39

991

34 7/8

886

19 5/8

498

10

254

9

229

NNXT4236

42

1067

34 7/8

886

19 5/8

498

10

254

9

229

Figure 5.2 Clearances to Combustibles

20 Heatilator • Novus NNXT • 4055-879 • Rev. o • 2/12