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DVM Series Direct Vent Gas Fireplace
FP1955
Apply Mastic to
All Sides
Figure 17 -
Install Horizontal Vent Cap
WARNING
Do not recess vent termination into any wall. This will
cause a fire hazard.
FP1955
horizontal vent cap
Cut Vinyl Siding Away to Fit Standoff
or Termination
FP1956
Nut
Wood Screw
Figure 18 -
Installing Vinyl Siding Standoff and Termination
All rear vent through-the-wall applications
must use Vermont Castings Group-designed
5 x 8 square termination. No other manu-
FP1956
facturer's termination is pemitted in this
vinyl siding standoff
application.
For more information, refer to the instructions
supplied with the termination.
18
Vent Cap
T
H O
Wood Screw
Apply Mastic to All Sides
Standoff #1250 or 5DT-VS
(Not Required for
Vermont Castings Group
Termination)
Termination
T
H O
Bolt
6. Slide the wall thimble over the vent pipe before con-
necting 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
connection. Fasten all vent connections with screws
provided.
8. Slide the wall thimble against the interior wall surface
and attach with screws. Figure 19
Vent Cap
(Horizontal
Termination)
FP1957
Figure 19 -
Connect Vent Cap with Horizontal Vent Pipe
HORIZONTAL WITH VERTICAL RISE
(THROUGH-THE-WALL) TERMINATION
CONFIGURATIONS
FP1957
Since it is very important for the venting system to
install firestop
maintain its balance between the combustion air intake
and the flue gas exhaust, certain limitations as to vent
configurations apply and must be strictly adhered to.
The Vent Graph, showing the relationship between vertical
and horizontal side wall venting, will help to determine the
various dimensions allowable. Refer to Page 15.
Minimum clearance between vent pipes and combusti-
ble materials is 3" on top and 1" from bottom and sides
unless otherwise noted (Exception: Outside wall with
firestop: 1" all around pipes are allowed). If the vertical
run is 7
⁄
feet or more, off the top of the fireplace, the
1
2
clearance is 1" on all sides of the horizontal run.
When vent termination exits through foundations less than
20" below siding outcrop, the vent pipe must flush up with
the siding.
It is best to locate the fireplace in such a way that minimizes
the number of offsets and horizontal vent length.
The horizontal vent run refers to the total length of vent
pipe from the flue collar of the fireplace (or the top of the
transition elbow) to the face of the finished outside wall or
the mounting flange of the termination.
VENTING INSTALLATION
". Apply silicone to the outer pipe
Interior Wall
Surface
Fire Stop
Assembly
Screw
20306747
Horizontal
Vent Pipe
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