41
9.00
9.00
A
B
DETAIL
A
SCALE
2 : 5
DETAIL
B
SCALE
4 : 5
Wall Framing
Horizontal
Termination
Wall Thimble
Fire Stop
Exhaust Pipe
Combustion Air
Outer Pipe
Elbow
Initial Installation
QUALIFIED INSTALLERS ONLY
h
oRizontaL
t
eRmination
:
1
. A minimum of 18” vertical rise before an elbow is required when horizontally
terminating with an approved venting cap.
2. Horizontal pipes must not be level. For every 12” (305 mm) of horizontal travel there
should be at least ¼” (6.4 mm) of vertical rise. Never allow the vent to run downward, as
this could cause high temperatures or even present the possibility of a fire.
3. The exterior of the horizontal
vent termination must not be
blocked or obstructed.
4. If the vent termination is not
being attached to wood, the
four wood screws provided
should be replaced with material
appropriate fasteners.
5. For buildings with vinyl siding,
a vinyl standoff should be
installed between the vent cap
and the exterior wall. Attach
the vinyl siding standoff to the
horizontal termination. Note
that the termination screws
onto the flat portion of the
standoff which provides an air
space between the wall and
the vent termination. The air
gap prevents excessive heat
from possibly melting the vinyl
siding.
6.
Horizontal pipes must be
supported every
3’ (914 mm)
.
Plumber’s “all round” strap will
suffice.
7. Ensure venting clearances are maintained, see Page 36 for details.
Step 1.
Set the fireplace in the desired location. Check to determine if wall studs will be in the way when
the venting system is attached. If this is the case, the location of the fireplace may have to be
adjusted or the venting may have to be offset.
Step 2.
Many
direct vent pipe sections are designed with special twist-lock connections. Dry fit the
desired combination of pipe and elbows to the appliance adaptor.
Step 3.
With the pipe in the correct position and attached to the fireplace, mark the wall for a hole as
directed by specified wall thimble dimensions. Cut and frame the hole in the exterior wall where
the vent will be terminated. If the wall being penetrated is made of a non-combustible material
(i.e. masonry or concrete) a minimum
8 1/2” (21.6 cm)
hole is acceptable.
Figure 58. Horizontal Vent Termination
Summary of Contents for G42G
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Page 50: ...50 Notes...
