Napoleon BGD36CFNTR Installation And Operating Instructions Manual page 13
Vented natural and propane gas fireplace heaters
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- Installation and operating instructions manual (136 pages) ,
- Installation and operation manual (120 pages) ,
- Installation and operating instructions manual (124 pages)
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BGD36CF REAR EXIT / HORIZONTAL TERMINATION
when (H
) < (V
)
T
T
Simple venting confi guration (only two 90° elbows)
See graph to determine the required vertical rise V
FIGURE 25
required horizontal run H
For vent confi gurations requiring more than two 90° elbows
REQUIRED
VERTICAL
RISE IN
FEET
V
T
HORIZONTAL VENT RUN PLUS OFFSETS IN FEET
The shaded area within the lines represents acceptable
values for H
and V
.
T
T
the following formulas apply:
Formula 1: H
< V
T
Formula 2: H
+ V
T
T
T
T
< 40 feet
Example 4:
for the
T
V
= 9 ft
1
V
= 6 ft
2
V
= V
+ V
T
1
H
= 3 ft
1
H
= 2 ft
2
H
= 1.5 ft
3
H
= H
+ H
R
1
H
= .03(four 90° elbows - 90°)
H
O
T
= .03(90 + 90 + 90 + 90 - 90) = 8.1 ft
H
= H
+ H
T
R
H
+ V
= 14.6 + 15 = 29.6 ft
T
T
Formula 1:
H
14.6 < 15
Formula 2:
H
29.6 < 40
Since both formulas are met, this vent confi guration is
acceptable.
90°
V
2
90°
H
2
V
1
H
1
90°
= 9 + 6 = 15 ft
2
+ H
= 3 + 2 + 1.5 = 6.5 ft
2
3
= 6.5 + 8.1 = 14.6 ft
O
< V
T
T
+ V
< 40 feet
T
T
W415-0566 / D / 08.30.07
13
H
3
90°
FIGURE 26
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