CDV7 Series Gas Fireplace
69D2027
15
VENtING INStallatIoN
Figure 13 -
Combustible Clearances for Vent Pipe
VENt pIpE ClEaRaNCES
Rear Vent: horizontal sections of this vent
system require a minimum of 3" (76 mm)
clearances to combustibles at the top of
the flue and 1" (25 mm) clearance at the
sides and bottom
until the flue penetrates
the outside wall.
a minimum 1" (25 mm)
clearance all around the flue is acceptable
at this point of penetration.
Vertical sections of this vent system require
a minimum of 1" clearance to combustibles
on all sides of the pipe.
w
a
RNING
1"
3"
1"1"
FP2289
RV rear vent
A Minimum of 3" (76 mm)
Clearance to the Top Is
Required Along Horizontal
L e n g t h u n t i l F l u e P i p e
Penetrates Outside Wall.
A Minimum 1" (25 mm)
Clearance to Combustibles
Permitted All Around Flue at
Outside Wall
FP2289
REaR wall VENt applICatIoN
When installed as a rear vent unit this appliance may be
vented directly to a termination located on the rear wall
behind the appliance.
•
Only MHSC venting components are approved to be
used in these applications (Refer to ‘Venting Compo-
nents’ listed for different installation requirements).
•
The maximum horizontal distance between the rear of
the appliance (or end of the transition elbow in a cor-
ner application) and the outside face of the rear wall is
20” (508 mm).
Figure 14
•
Only one 45° elbow is allowed in these installations.
•
Minimum clearances between vent pipe and combus-
tible materials are as follows:
Top - 3” (76 mm)
- except at outside wall 1" (25 mm)
Sides - 1” (25 mm)
Bottom - 1” (25 mm)
FP2292
rear vent top vu
20”
(508 mm)
Max.
Rear Vent top
View
Figure 14 -
Rear Vent Application, No Elbows
REaR wall VENt INStallatIoN -
t-loCK pIpE
Step 1
Locate and cut the vent opening in the wall.
For combustible walls first frame in opening.
Figure 15
NotE:
When using flex vent, the opening will have to be
measured according to the 1” (25 mm) rise in 24” (610
mm) vertical run.
Combustible walls:
Cut a 9
B\,
”H x 9
B\,
” W (244 x 244
mm) hole through the exterior wall and frame as shown.
Figure 15
Noncombustible walls:
Hole opening should be 7
Z\x
”
(191 mm) diameter.
Step 2
Secure firestop to the inside frame, center in the 9
B\,
" x
9
B\,
" (244 x 244 mm) vent opening.
