Monessen Hearth DIRECT VENT GAS FIREPLACE KHLDV400 - Manual (Page 15)

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KHLDV Series Gas Fireplace VentInG InStaLLatIon
VertIcaL SIDewaLL InStaLLatIon -
Step 1
Locate vent opening on the wall. It may be necessary to
first position the fireplace and measure to obtain hole lo-
cation. Depending on whether the wall is combustible or
noncombustible, cut opening to size. Figure 11 (For com-
bustible walls first frame in opening.)
combustible walls: Cut a 10Z\x”H x 10Z\x”W (267 x 267
mm) hole through the exterior wall and frame as shown.
Figure 11
noncombustible walls: Hole opening must be 8Z\x” (216
mm) in diameter.
VO584-100
Vent Opening
2/99 djt
Vent opening for combustible walls
10Z\x”
(267 mm)
Min.
Fireplace Hearth
Framing Detail
opening for noncombustible wall
8Z\x”
(216 mm)
Fireplace Hearth
FP2293
Figure 11 -
Locate vent opening on wall
10Z\x”
(267 mm) Min.
Step 2
Secure firestop to the inside frame, center in the 10Z\x " x
10Z\x " vent opening.
Step 3
Place fireplace into position. Measure the vertical height
(X) required from the base of the flue collars to the center
of the wall opening. Figure 12
Step 4
Using appropriate length of pipe section(s) attach to fire-
place with three (3) screws. Follow with the installation of
the elbow.
Step 5
Measure the horizontal length requirement figuring a 1Z\v”
(32 mm) overlap, i.e. from the elbow to the outside wall
cap. Figure 13
always install horizontal venting on a level
plane.
X X
Figure 12 -
Vertical Height
Requirement
FP1181
X
X
Figure 13 -
Horizontal Length
Requirement
FP1182
Step 6
Use appropriate length of pipe sections - telescopic or
fixed - and install.
Sealing vent pipe and firestop gaps with high tem-
perature sealant will restrict cold air being drawn in
around fireplace.
Step 7
Guide the vent terminations 5” and 8” collard into their
respective vent pipes. Double check that the vent pipes
overlap the collars by a minimum of 1Z\v" (32 mm). Secure
the termination to the wall with screws provided and caulk
around the wall plate to weatherproof. As an alternative to
screwing the termination directly to the wall, you may also
use expanding plugs or an approved exterior construction
adhesive.
Support horizontal pipes every 36” (914
mm) with metal pipe straps.