Constructing The Appliance Chase - Heatilator CRAVE4836 Installation Manual

C
D
B
D
Figure 3.9 Appliance Locations: CRAVE See-Through Models
C. 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 be enclosed inside the chase.
NOTICE: Treatment of ceiling fi restops and wall shield
fi restops 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 fl oor of the chase
should be insulated. Vapor and air infi ltration barriers
should be installed in the chase as per regional codes for
the rest of the home. Additionally, in regions where cold
air infi ltration may be an issue, the inside surfaces may be
sheetrocked and taped (or an equivalent method may be
used) to achieve maximum air tightness.
Heatilator • CRAVE4836/ST, CRAVE6048/ST, CRAVE7260/ST, CRAVE8472/ST Installation Manual • 2301-970 Rev. Q • 9/15
16
C
A
MODEL
CRAVE4836ST
CRAVE6048ST
CRAVE7260ST
CRAVE8472ST
NOTICE: This See-Through appliance is NOT
designed or approved for an indoor/outdoor
application.
A B
Inches 48-1/4 17-1/8
Millimeters 1225 435
Inches 60-1/4 17-1/8
Millimeters 1530 435
Inches 72-1/4 17-1/8
Millimeters 2013 435
Inches 84-1/4 17-1/8
Millimeters 2140 435
To further prevent drafts, the wall shield and ceiling fi re-
stops should be caulked with caulk with a minimum of
300ºF continuous exposure rating to seal gaps. Gas line
holes and other openings should be caulked with caulk
with a minimum of 300ºF continuous exposure rating or
stuffed with unfaced insulation. If the appliance is being
installed on a cement surface, a layer of plywood may be
placed underneath to prevent conducting cold up into the
room.
Note: Figure 3.10 and Figure 3.11, and Figure 3.12 show the
fi replace installed on the fl oor. However, this fi replace can be
elevated off the fl oor provided that the fi replace is properly
supported by framing materials and the ceiling clearances are
maintained.
C D
48 1/2
1219 13
48 1/2
1219 13
48 1/2
1219 13
48 1/2
1219 13