Continental Fireplaces CB36PTR - Rear Exit Horizontal Termination

19
3.9
rear exit horizontal termination
(H
T
) < (V
T
)
EN
Simple venting configuration
See graph to determine the required vertical rise V
T
for the required
(only two 90° elbows)
horizontal run H
T
.
40 (12.2)
35.3 (10.7)
REQUIRED
30 (9.1)
VERTICAL
RISE IN
20 (6.1)
FEET
(METERS) V
T
10 (3.1)
2 (0.6)
0
2.5
5
7.5
10
12.5
15
17.5
20
(0.8)
(1.5)
(2.3)
(3.1)
(3.8)
(4.6)
(5.3)
(6.1)
1.6
(0.5)
HORIZONTAL VENT RUN PLUS OFFSET IN FEET (METERS) H
T
The shaded area within the lines represents acceptable values for H
T
and H
T
For vent configurations requiring more than two 90° elbows, the following formulas apply:
Formula 1: H
T
<
V
T
90°
Formula 2: H
T
+ V
T
< 40 feet (12.2m)
H
3
Example:
V
1
= 9 FT (2.7m)
V
2
V
2
= 6 FT (1.8m)
90°
V
T
= V
1
+ V
2
= 9FT (2.7m) + 6FT (1.8m) = 15FT (4.6m)
H
2
H
1
= 3 FT (0.9m)
H
2
= 2 FT (0.6m)
H
= 1.5 FT (0.5m)
H
R
3
= H
1
+ H
2
+ H
3
90°
= 3FT (0.9m) + 2FT (0.6m) + 1.5FT (0.5m) = 6.5FT (2m)
V
1
H
O
= .03 (four 90° elbows - 90°) = .03 (360° - 90°) = 8.1 FT (2.5m)
H
T
= H
R
+ H
O
= 6.5FT (2m) + 8.1FT (2.5m) = 14.6FT (4.5m)
H
T
+ V
T
= 14.6FT (4.5m) + 15FT (4.6m) = 29.6 FT (9m)
H
1
Formula 1:
H
T
<
V
T
90°
14.6 FT (4.5m) < 15 FT (4.6m)
Formula 2:
H
T
+ V
T
<
40 FT (12.2m)
29.6 FT (9m) < 40 FT (12.2m)
Since both formulas are met, this vent configuration is acceptable.
W415-1679 / D / 03.09.18