Clearances - Heatilator B-Vent Gas Appliance CB4236MIR Owner's Manual

C. Clearances
WARNING! Risk of Fire! Maintain specifi ed 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 fi re.
Note: The appliance must be raised 1 1/4 in. (32 mm) off fl oor so
the Harbor System can be used. Adjust framing and vent locations
accordingly.
1/2 in. (13 mm)
Combustible flooring may be installed
next to the front of the appliance.
30 in.
(762 mm)
clearance to ceiling
36 in.
(914 mm)
Figure 5.2 Clearances to Combustibles
1/2 in.
(13 mm)
Drywall
0 in.
0 (Clearance to
Standoffs)
0 in.
Model
CB4236MIR in.
mm
CB4842MIR in.
mm
Heatilator • Caliber Mesh BV Series • 4040-848 Rev G • 10/08
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.
Note: If the inside of the framed cavity is to be fi nished,
the framing dimensions must include the fi nished surface.
Example: If drywall is to be attached to the rear wall, the
depth must be measured from the drywall surface.
Note: All pipe clearance
specifications are per vent
manufacturer's installation
instructions.
B
C
A
A B
Rough Opening Rough Opening
(Width) (Height)
42 38-3/4
1067 984
48 38-3/4
1219 984
Per Vent
Manufacturer's
Specifications
C
Rough Opening
(Depth)
23-1/2
597
23-1/2
597
19