Continental Fireplaces Constructeur 36 Serie Manuel D'installation Et D'opération page 19

2.8 rear exit horizontal termination
Simple venting configuration
(only two 90° elbows)
For vent configurations requiring more than two 90° elbows, the following formulas apply:
Formula 1: H < V
T T
Formula 2: H + V < 40 feet (12.2m)
T T
Example:
V = 9 FT (2.7m)
1
V
= 6 FT (1.8m)
2
V = V + V = 9FT (2.7m) + 6FT (1.8m) = 15FT (4.6m)
T 1 2
H = 3 FT (0.9m)
1
H = 2 FT (0.6m)
2
H = 1.5 FT (0.5m)
3
H = H + H + H = 3FT (0.9m) + 2FT (0.6m) + 1.5FT (0.5m) = 6.5FT (2m)
R 1 2 3
H = .03 (four 90° elbows - 90°) = .03 (360° - 90°) = 8.1 FT (2.5m)
O
H = H + H
= 6.5FT (2m) + 8.1FT (2.5m) = 14.6FT (4.5m)
T R O
H + V = 14.6FT (4.5m) + 15FT (4.6m) = 29.6 FT (9m)
T T
Formula 1: H < V
T T
14.6 FT (4.5m) < 15 FT (4.6m)
Formula 2: H + V < 40 FT (12.2m)
T T
29.6 FT (9m) < 40 FT (12.2m)
Since both formulas are met, this vent configuration is acceptable.
venting requirements
(H ) < (V )
T T
See graph to determine the required vertical rise V
horizontal run H
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
(0.8)
1.6
(0.5)
HORIZONTAL VENT RUN PLUS OFFSET IN FEET (METERS) H
The shaded area within the lines represents acceptable values for H
for the required
T
.
T
5 7.5 10 12.5 15
(1.5) (2.3) (3.1) (3.8) (4.6)
and H
T
90°
H
3
V
2
90°
H
2
90°
V
1
H
1
90°
16.3B
W415-3094 / B / 05.09.22
EN
17.5 20
(5.3) (6.1)
T
T
19