Constructing The Appliance Chase; Floor Protection - Heat & Glo RED60 Installation Manual

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 for maximum air tightness.
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
B
D
A
Rough
Opening
(Vent Pipe)
Inches
10
Millimeters
254
Figure 3.3 Clearances to Combustibles
A
C
MINIMUM FRAMING DIMENSIONS*
B C
Rough Rough
Opening Opening Opening
(Height) (Depth) (Width)
51 18-1/4 70-3/8
1295 464
Heat & Glo • RED60 Installation Manual • 2159-980 Rev. D • 11/13
installed on a cement surface, a layer of plywood may be
placed underneath to prevent conducting cold up into the
room.
D. Floor Protection
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.
Note: Figure 3.3 and Figure 3.4 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.
F
D E F
Rough
Clearance Combustible
to Ceiling Floor
43 0
1788 1092 0
MEASURE FROM TOP OF
FIREPLACE OPENING
J
G
I
G H
Combustible Behind Sides of
Flooring Appliance Appliance
0 1
0 25
E
H
I J
Front of
Appliance
1 36
25 914
9