Heatilator • Novus NDV Series • 4055-187 Rev J • 08/09
19
In addition to these framing dimensions, also reference the
following sections:
• Clearances and Mantel Projections (Sections 3.C. and 3.D.)
• Vent Clearances and Framing (Section 6)
Rear vent
One 45° elbow
Horiz Term
Rear Vent
Two 90° elbows
Horiz Term
Rear Vent
One 90° elbow
Vert Term
Top Vent
One 90° elbow
Horiz Term
No elbows
Horiz Term
A
A
A
A
A
A
C
B
B
E
F
D
1/2 in. (13 mm) min.
appliance to
combustibles
D
F
1 in. (25 mm)
min. pipe to
combustibles
E
1/2 in. (13 mm)
min. appliance
to combustibles
Alcove
Installation
C
1 in. (25 mm)
min. pipe to
combustibles
G
Drywall
48 in.
(1219 mm)
maximum
A
B
C
D
E
F
G
in.
36
33-1/2
19-5/8
43-3/8
47
53-1/4
37
mm
914
851
498
1102
1194
1353
940
in.
39
35-1/2
19-5/8
43-3/8
47
53-1/4
40
mm
991
902
498
1102
1194
1353
1016
in.
42
37-5/8
19-5/8
43-3/8
47
53-1/4
43
mm
1067
956
498
1102
1194
1353
1092
in.
48
41-7/8
19-5/8
43-3/8
47
53-1/4
49
mm
1219
1064
498
1102
1194
1353
1245
NDV4842
Model
NDV3630
NDV3933
NDV4236
5
Framing and Clearances
A. Select Appliance Location
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Provide adequate
clearance around air openings and for service access.
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FOR DESIGN PURPOSES ONLY. Illustrations/diagrams
are not drawn to scale. Actual installation may vary due to
individual design preference.
Figure 5.1 Appliance Locations
