Constructing The Appliance Chase - Heat & Glo MEZZO36 Installation Manual

C
D
B
D
Figure 3.9 Appliance Locations: MEZZO 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 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 (or an equivalent method may be
used) to achieve maximum air tightness.
Heat & Glo • MEZZO36/ST, MEZZO48/ST MEZZO60/ST, MEZZO72/ST Installation Manual • 2300-970 Rev. L • 5/15
16
C
A
MODEL
MEZZO36ST
Millimeters
MEZZO48ST
Millimeters
MEZZO60ST
Millimeters
MEZZO72ST
Millimeters
A B
Inches 48-1/4 17-1/8
1225 435
Inches 60-1/4 17-1/8
1530 435
Inches 72-1/4 17-1/8
2013 435
Inches 84-1/4 17-1/8
2140 435
To further prevent drafts, the wall shield and ceiling fire-
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
fireplace installed on the floor. However, this fireplace can be
elevated off the floor provided that the fireplace is properly
supported by framing materials and the ceiling clearances are
maintained.
NOTICE: This See-Through appliance is NOT
designed or approved for an indoor/outdoor
application.
C D
48 1/2
1219 13
48 1/2
1219 13
48 1/2
1219 13
48 1/2
1219 13