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vENTING INSTaLLaTIoN
vERTICaL ThRouGh-ThE-RooF aPPLICa-
TIoNS
This Gas Fireplace has been approved for,
•
Vertical installations up to 40' (12 m) in height. Up to
a 10' (3 m) horizontal vent run can be installed within
the vent system using a maximum of two 90° elbows.
Figure 31
40' Maximum Height
8' Minimum Height
40' Maximum Height
8' Minimum Height
Figure 31 -
Support Straps for Horizontal Runs
•
Up to two 45° elbows may be used within the horizontal
run. For each 45° elbow used on the horizontal plane,
the maximum horizontal length must be reduced by 18"
(450 mm).
Example: Maximum horizontal length
No elbows = 10' (3 m)
1 x 45° elbows = 8.5' (2.6 m)
2 x 45° elbows = 7' (2.1 m)
•
A minimum of an 8' (2.5 m) vertical rise is required.
•
Two sets of 45° elbows offsets may be used within the
vertical sections. From 0 to a maximum of 8' (2.5 m) of
vent pipe can be used between elbows. Figure 32
42D0200
10'
Maximum
Support Straps
Every 3'
10'
Maximum
FP2308
support straps
Support Straps
Every 3'
FP2308
1
2
3
4
Elbow 1
Example:
Elbow 2
Elbow 3
Elbow 4
Total Angular Variation
Figure 32 -
Maximum Elbow Usage
•
The maximum angular variation allowed in the system
is 270°. Figure 32
•
The minimum height of the vent above the highest point
of penetration through the roof is 2' (610 mm).
INSTaLLaTIoN FoR vERTICaL TERMINa-
TIoN
1. Determine the route your vertical venting will take. If
ceiling joist, roof rafters or other framing will obstruct
the venting system, consider an offset. Refer to Figure
33 to avoid cutting load bearing members.
NoTE: Pay special attention to these installation instructions
for required clearances (air space) to combustibles when
passing through ceilings, walls, roofs, enclosures, attic
rafters, etc. Do not pack air spaces with insulation. Also
note maximum vertical rise of the venting system and any
maximum horizontal offset limitations. Offsets must fall
within the parameters shown on Page 20, Figure 23.
2. Set fireplace in desired location. Drop a line plumb down
from the ceiling to the position of the flue exit. Mark the
center point where the vent will penetrate the ceiling.
Drill a small locating hole a this point.
Drop a plumb line from the inside of the roof to the ceiling
locating hole in the ceiling. Mark the center point where
the vent will penetrate the roof. Drill a small locating hole
at this point.
Designer Series Gas Fireplaces
1
2
=
90°
=
45°
3
=
45°
4
=
90°
=
270°
FP2309
max elbow use A
FP2309
21
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