Heatilator • NDI30-C, NDI30-SP, NDI35-C, NDI35-SP, NDI30-SPFK, NDI35-SPFK • 2226-901 Rev. K • 11/12
18
Figure 5.2 Fireplace Opening
In addition to these dimensions, also reference Clearances and Mantel Projections (Section 5.B).
E
D
C
I
B
A
G
H
F
MINIMUM FIREPLACE SIZE
Location
NDI35-C
NDI30-C
Inches
Millimeters
Inches
Millimeters
A
Rear Width
23-1/2
597
20-1/4
514
B
Front Width
34-5/8
879
30-1/2
775
C
Glass Opening Width
31-9/16
802
27-7/16
697
D
Glass Opening Height
15-11/16
398
12-13/16
325
E
Height-Front
24
610
20-1/2
521
F
Height-Rear
21-1/16
535
17-5/8
448
G**
Unit Depth
16
406
14-3/4
375
H
Venting Depth
10-1/2
267
9-1/2
241
I
Height to Top of
Glass Frame
22
559
18-1/4
464
* Note: If exhaust collar on insert and fi replace damper do not line up, add 4 inches (102 mm) to minimum
fi replace height for bends in vent pipe.
TOP VIEW
FRONT VIEW
SIDE VIEW
**Unit depth is measured to the back of the surround to give the depth needed for installation.
