S-CB
+
Boiler Range Manual
35
8.9.4
E
XAMPLE
D:
C
ONCENTRIC FLUE GAS
/
AIR SUPPLY PIPE
(
ROOF
-
MOUNTED
)
60
2m
3
m
2m
2m
2
m
Calculation example with given lengths: checking resistance
Boiler type:
S-CB
+
60
C
on
ce
ntr
ic
Diameter: 80/125 mm.
Number
Pa
Pa total
Adaptor conc./par.
80/125
1
10
10
Straight tube m¹
total
11
9
99
Bend
90°
3
8
24
Bend
45°
2
5
10
Concentric terminal
roof
1
34
34
Total resistance flue gas outlet and air supply
(concentric):
177
The total resistance is less than 200 Pa. This flue gas / air supply system is
functional.
8.9.5
E
XAMPLE
E:
C
ONCENTRIC FLUE GAS
/
AIR SUPPLY PIPE
(
WALL
-
MOUNTED
)
60
3m
6
m
Calculation example with given lengths: checking resistance
Boiler type:
S-CB
+
60
C
on
ce
ntr
ic
Diameter: 80/125 mm
Number
Pa
Pa total
Adaptor conc./par.
80/125
1
10
10
Straight tube m¹
total
9
9
81
Bend
90°
1
8
8
Concentric terminal
wall
1
13
13
Total resistance flue gas outlet and air supply
(concentric):
112
The total resistance is less than 200 Pa. This flue gas / air supply system
is functional.
Summary of Contents for S-CB+ Series
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