Constructing The Appliance Chase; Clearances - Heat & Glo SL-550BE-B Owner's Manual

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 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 for maximum air tightness.
B
D
DVP
Pipe
Models
Rough
Opening
(Width)
in. 10
SL-550BE-B
SL-550BE-IPI-B
mm 254
* Adjust framing dimensions for interior sheathing (such as sheetrock)
C** Add 12 inches for rear venting with one 90º elbow.
Figure 5.2 Clearances to Combustibles
20
A
C
MINIMUM FRAMING DIMENSIONS*
A B C
SLP **DVP SLP
Pipe Pipe Pipe
Rough
Opening
Rough Rough Rough
(Height)
Opening Opening Opening
(Width) (Depth) (Depth)
8-5/8 34-3/4 16-1/4 16-1/4
219 876 413 413
Heat & Glo • SL-550BE-B, SL-550BE-IPI-B • 2158-900 Rev. H • 8/09
To further prevent drafts, the wall shield and ceiling fi re-
stops should be caulked with high temperature caulk to
seal gaps. Gas line holes and other openings should be
caulked with high temperature caulk or stuffed with un-
faced insulation. If the appliance is being installed on a
cement surface, a layer of plywood may be placed under-
neath to prevent conducting cold up into the room.
C. Clearances
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.
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.
F
J
G
D E F
Rough
Clearance Combustible
Opening
to Ceiling Floor
(Width)
37 32 0
940 813 0
FROM TOP
OF HOOD
TO CEILING
E
H
I
G H I
Combustible Behind Sides of
Flooring Appliance Appliance
0 1/2 1/2
0 13 13
J
Front of
Appliance
36
915