Constructing The Appliance Chase; Clearances - Heat & Glo SL-36-Ultimate Owner's Manual

B. Constructing the Appliance Chase
A chase is a vertical boxlike structure built to enclose the
gas appliance and/or its vent system. Vertical vents that
run on the outside of a building may be, but are not re-
quired to be, installed inside a chase.
Construction of the chase may vary with the type of build-
ing. These instructions are not substitutes for the require-
ments of local building codes. Local building codes MUST
be checked.
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 for maximum air tightness.
To further prevent drafts, the wall shield and ceiling
fi restops 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 rat-
B
D
A
Rough
Opening
(Vent Pipe)
Inches 10
Millimeters 254
Figure 3.2 Clearances to Combustibles
A
C
Clearance to Combustibles
B C D
Rough Rough Rough
Opening Opening Opening
(Height) (Depth) (Width)
52 17-1/4 41-1/2
1321 438 1054
Heat & Glo • SL-36-Ultimate • 2141-900 Rev. i • 5/11
ing 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.
C. Clearances
Fire Risk.
Odor Risk.
• Install appliance on hard metal or wood surfaces
extending full width and depth of appliance.
• Do NOT install appliance directly on carpeting,
vinyl, tile or any combustible material other than
wood.
Fire Risk.
• Construct chase to all clearance specifi cations
in manual.
• Locate and install appliance to all clearance
specifi cations in manual.
J
F
G
E F G
Clearance Combustible Combustible
to Ceiling Floor Flooring
32-1/2 0 0
825 0 0
WARNING
WARNING
E
H
I
H I J
Behind Sides of Front of
Appliance Appliance Appliance
1 1/2 36
25 13 914
9