Monessen Hearth DIRECT VENT MLDV500 - Manual (Page 17)

75D0004 17
MLDV Series Gas Fireplace VENTING INSTALLATION
REAR WALL VENT INSTALLATION (continued)
HOT
FP1956
vinyl siding
Cut Vinyl Siding Away
to Fit Standoff
Standoff #150 or
5DT-VS
(Not required for
MHSC termination)
Termination
Bolt
Wood Screw
Nut
Apply Mastic
to all Four
Sides
Figure 18 -
Install Simpson/Selkirk Vinyl Siding Standoff and
Termination
FP1956
FP1957
vent cap w hor pipe
Inerior Wall
Surface
Firestop
Horizontal
Vent Pipe
Screw
Vent Cap
(Horizontal
Termination)
Figure 19 -
Install Firestop on Horizontal Vent Pipe
FP1957
NOTE: Replace the wood screws with appropriate fasteners for
stucco, brick, concrete or other types of siding.
For vinyl siding, stucco or wood exterior, use vinyl siding standoffs
between vent cap and exterior wall for Simpson or Selkirk Termina-
tions only. The vinyl siding standoff prevents excessive heat from
melting the vinyl siding material. NOTE: MHSC Termination does
not require standoff. Bolt the vent cap to the standoff or wall. Apply
non-hardening mastic around outside edge of the standoff instead
of the vent cap assembly. Use wood screws provided to attach the
standoff. Figure 18
6. Slide the stop over the vent pipe before connecting the horizontal
run to the vent cap. Figure 19
7. Carefully move the fireplace with vent assembly attached toward the
wall and insert the vent pipe into the horizontal termination. The pipe
overlap should be a minimum of 1
1 /
4
". Apply silicone to the outer pipe
connection. Fasten all vent connections with screws provided.
8. Slide the wall thimble against the interior wall surface and attach
with screws. Figure 19
HO
T
FP1955
horizontal vent cap
Vent Cap
Wood Screw
Apply Mastic to all
Four Sides
Figure 17 -
Install Horizontal Termination
Do not recess vent termination into any wall.
This will cause a fire hazard.
All rear vent through-the-wall applications
must use MHSC-designed 5 x 8 square termi-
nation. No other manufacturer's termination is
pemitted in this application. For more information, follow instructions
provided with terminations.
NOTICE
W
ARNING
NOTICE