18
53D0419
Designer Series Gas Fireplaces
VENTING INSTaLLaTIoN
hoRIZoNTaL TERMINaTIoN CoNFIGuRa-
TIoNS
Since it is very important that the venting system main-
tain its balance between the combustion air intake and
the flue gas exhaust, certain limitations as to vent con-
figurations 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.
Figure 23
Minimum clearance between vent pipes and combus-
tible materials is 3" on top and 1" from bottom and
sides unless otherwise noted.
When vent termination exits through foundations less than
0" 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
he Transition Elbow) to the face of the outer wall.
•
The maximum number of 90° elbows per side wall
installation is three (3).
Figure 24
•
If a 90° elbow is fitted directly on top of the fireplace
flange the maximum horizontal vent run before the ter-
mination or a vertical rise is 36” (914 mm).
Figure 25
Figure 23 -
Rear Wall Venting Graph
Horizontal Dimension From the Outside Face of the
Wall to the Center of the Fireplace Vent Flange
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
2 4 6 8 10 12 14 16 18 20
eg: A
Dimensions in
Feet
20"
FP2248
sidewall vent graph
FP1176
max 90 bends
Figure 24 -
Maximum Three (3) 90° Elbows Per Installation
3 x 90°
Elbows
3 x 90°
Elbows
FP1176
Max 20"
Max 20"
36"
(914 mm)
Max.
36"
(914 mm)
Max.
FP1177
max horizontal run
Figure 25 -
Maximum Horizontal Run with No Rise
FP1177
