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Page 20
INSTALLATION
Framing
This fireplace can be elevated off the floor provided that the
fireplace is properly supported by framing materials and the
ceiling clearances are maintained.
Fireplace framing can be built before or after the fireplace is set
in place. Framing should be positioned to accommodate wall
covering and fireplace facing material. The fireplace framing
should be constructed of 2 x 4 lumber. Refer to
Figure 23
for
minimum framing dimensions.
CAUTION
Measure fireplace dimensions and verify framing methods,
and wall covering details before framing construction begins.
Framing dimension A includes a 13-inch clearance for
framing standoffs on fireplace. After installing fireplace
into framing, the non-combustible board must cover the
13-inch opening above the fireplace.
NOTICE:
For finishing to top of fireplace, refer to
Figures 28
and 30.
B
C
A
C
INDEX
NUMBER
DVLL60
A
49-3/8in
B
79-5/8in
C
21-1/2in
Figure 23
Construction of a Fireplace Chase
A chase is a vertical box-like structure built to enclose the gas
fireplace 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.
A chase should be constructed in the manner of all outside walls
of the home to prevent cold air drafting problems. 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 sheet rocked and taped (or an
equivalent method may be used) to achieve maximum air tightness.
To further prevent drafts, the wall shield and ceiling firestops
should be caulked with caulk rated for a minimum of 300°F
continuous exposure rating to seal gaps. Gas line holes and
other openings should be caulked or stuffed with unfaced
insulation. If the fireplace is being installed on a cement surface,
a layer of plywood may be placed underneath to prevent
conducting cold up into the room.
Framing and Finishing
1. Choose fireplace location. See pages 14 - 15.
2. Frame in fireplace with a header across the top. It is
important to allow for finished face when setting the depth of
the fireplace.
3. Secure the four framing brackets and hand bend them into a
V shape as shown in
Figure 24.
Secure with #10 x 1/2-inch
hex-head screws.
4. Locate the nailing flanges on the sides of the fireplace (two
each side).
See Figure 24.
Figure 24
