Napoleon BGD36CFNTR Installation And Operating Instructions Manual page 16
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 (44 pages)
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16
BGD42CF HORIZONTAL TERMINATION
when (H
) > (V
)
T
T
Simple venting confi guration (only one 45º and 90° elbow)
See graph to determine
the required vertical rise
V
for the required hori-
T
zontal run H
.
T
FIGURE 31
REQUIRED
VERTICAL
RISE IN
INCHES
V
T
HORIZONTAL VENT RUN PLUS OFFSETS IN FEET
(H
)
T
The shaded area within the lines represents acceptable
values for H
and V
.
T
T
For vent confi gurations requiring more than one 45º and
one 90° elbow the following formulas apply:
Formula 1: HT < 4.2 VT
Formula 2: HT + VT < 24.75 feet
W415-0566 / D / 08.30.07
Example 2:
H
45°
V
1
V
= 4 ft
1
V
= 1.5 ft
2
V
= V
+ V
= 4 + 1.5 = 5.5 ft
T
1
2
H
= 2 ft
1
H
= 1 ft
2
H
= 1 ft
3
H
= 1.5 ft
4
H
= H
+ H
+ H
+ H
R
1
2
3
H
= .03(one 450° elbow + three 90° elbows - 135°)
O
= .03(315 - 135) = 5.4 ft
H
= H
+ H
= 5.5 + 5.4 = 10.9 ft
T
R
O
H
+ V
= 10.9 + 5.5 = 16.4 ft
T
T
Formula 1:
H
< 4.2V
T
4.2V
T
10.9 < 16.8
Formula 2:
H
+ V
< 24.75 feet
T
T
16.4 < 24.75
Since both formulas are met, this vent confi guration is
acceptable.
90°
90°
H
1
3
V
2
H
90°
2
FIGURE 32
= 2 + 1 + 1 + 1.5 = 5.5 ft
4
T
= 4.2 x 5.5 = 23.1 ft
H
4
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