Framing and clearances, A. selecting appliance location, B. constructing the appliance chase – Heatiator CB4842IR User Manual
Page 17
Heatilator • Caliber BV Series • 4040-262 • Rev M • 08/09
7
A
A
A
C
E
B
B
1/2 in.
(13 mm)
C
48 in.
(1219 mm)
max.
Drywall
D
A
B
C
D
E
in.
42
50-5/8
23-1/2
44
71-5/8
mm
1,067
1286
597
1118
1819
in.
48
55-1/4
23-1/2
50
78-1/4
mm
1,219
1403
597
1270
1988
Model #
CB4236IR
CB4842IR
5
Framing and Clearances
A. Selecting Appliance Location
When selecting a location for the appliance it is important to consider the required clearances to walls, Figures 5. and
5.2.
NOTICE: Illustrations reflect typical installations and are
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
B. Constructing the Appliance Chase
A chase is a vertical box-like structure built to enclose the
gas appliance and/or its vent system. In cooler climates
the vent should enclosed inside the chase.
NOTICE: Treatment of ceiling firestops and wall shield
firestops and construction of the chase may vary with the
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.
Chases should be constructed in the manner of all out-
side walls of the home to prevent cold air drafting prob-
lems. The chase should not break the outside building
envelope in any manner.
Walls, ceiling, base plate and cantilever floor of the chase
should be insulated. Vapor and air infiltration barriers
should be installed in the chase as per regional codes for
the rest of the home. Additionally, in regions where cold
air infiltration may be an issue, the inside surfaces may
be sheetrocked and taped for maximum air tightness. To
further prevent drafts, the wall shield and ceiling fire-
stops should be caulked with high temperature caulk to
seal gaps. Gas line holes and other openings should
be caulked with high temp caulk or stuffed with unfaced
insulation. If the appliance is being installed on a cement
slab, a layer of plywood may be placed underneath to
prevent conducting cold up into the room.
WARNING! Risk of Fire or Burns! Provide adequate
clearance around air openings and for service access.
Due
to high temperatures, the appliance should be located out
of traffic and away from furniture and draperies.