Heatilator NDV3630 Owner's Manual page 20

B. Constructing the Appliance Chase
type of building. These instructions are not substitutes for the
requirements of local building codes. Therefore, you MUST
check local building codes to determine the requirements
to these steps.
Clearance to Ceiling
Model
NDV3630
NDV3933
NDV4236
NDV4842
Figure 5.2 Clearances to Combustibles
20
1/2 in.
(13 mm)
Combustible flooring may be installed next
to the front of the appliance.
30 in. (762 mm)
0 in. TO LEVEL
OF STANDOFFS
36 in.
(914 mm)
A
Rough Opening Rough Opening
(Width)
36 in./914 mm 34-7/8 in./886 mm
39 in./991 mm 34-7/8 in./886 mm
42 in./1067 mm 34-7/8 in./886 mm
48 in./1219 mm 34-7/8 in./886 mm
Heatilator • Novus NDV Series • 4055-187 Rev J • 08/09
C. Clearances
carpeting, vinyl, tile or any combustible material other than
wood.
clearances to appliance and vent pipe:
Note:
1/2 in.
(13 mm)
Drywall
0 in.
0 in.
B C
Rough Opening
(Height) (Depth)
19-5/8 in./498 mm
19-5/8 in./498 mm
19-5/8 in./498 mm
19-5/8 in./498 mm
Install appliance on hard metal or wood surfaces
D
B
C
A
D D
Rough Opening Rough Opening
(DVP Pipe) (SLP Pipe)
10 in./254 mm 9 in./229 mm
10 in./254 mm 9 in./229 mm
10 in./254 mm 9 in./229 mm
10 in./254 mm 9 in./229 mm
-
-
install directly on
must