43
9.12 Flue gas and air supply resistance table
In the next section, for five typical flue gas outlet & air inlet configurations the maximum lengths of the straight
pipes will be calculated. First all component resistance values are given in the next table:
PARALLEL
S-CBX 85
S-CBX
105
S-CBX
125
S-CBX
155
Ø
RESISTANCE [Pa]
FL
UE G
AS
100
straight tube/m
2.3
3.3
5.0
-
45° bend
5.3
7.5
11.3
-
90° bend
8.5
12.1
18.3
-
Flue outlet zeta=0.05
0.4
0.6
1.0
-
Flue outlet zeta=1.0
9.0
12.8
19.2
-
Flue outlet zeta=1.5
13.5
19.1
28.8
-
130
straight tube/m
0,6
0,8
1,3
1,9
45° bend
1,1
1,6
2,4
3,5
90° bend
2,6
3,7
5,6
8,3
Flue outlet zeta=0.05
0,2
0,2
0,3
0,5
Flue outlet zeta=1.0
3,2
4,5
6,7
10,0
Flue outlet zeta=1.5
4,7
6,7
10,1
14,9
150
straight tube/m
0.4
0.5
0.8
1.1
45° bend
0.6
0.8
1.3
1.9
90° bend
1.4
2.0
3.0
4.4
Flue outlet zeta=0.05
0.1
0.1
0.2
0.3
Flue outlet zeta=1.0
1.8
2.5
3.8
5.6
Flue outlet zeta=1.5
2.7
3.8
5.7
8.4
Roof terminal
3.0
4.3
6.5
9.6
reducer 150 to 130
1.9
2.6
4.0
5.9
AIR SUPPLY
100
straight tube/m
2.7
3.8
5.8
-
45° bend
6.2
8.7
13.1
-
90° bend
9.9
14.1
21.2
-
air inlet zeta=1.0
10.4
14.8
22.3
-
130
straight tube/m
0,7
1,0
1,5
2,2
45° bend
1,3
1,8
2,7
4,0
90° bend
3,0
4,3
6,5
9,6
air inlet zeta=1.0
3,7
5,2
7,8
11,6
150
straight tube/m
0.4
0.6
0.9
1.3
45° bend
0.7
1.0
1.5
2.2
90° bend
1.6
2.3
3.4
5.1
air inlet zeta=1.0
2.1
2.9
4.4
6.5
NOTICE: This table may only be used for a single flue/air system for one boiler.
Do NOT use this table for common flue systems with cascaded boilers.
FLUE GAS OUTLET
zeta=0
open outlet
zeta=0,05
conical outlet
H/D=1,0
zeta=1,0
H/D=0,5
zeta=1,5
AIR INLET
H/D=1,0
zeta=1,0
Summary of Contents for S-CBX 105
Page 2: ......
Page 40: ...40 9 10 Flue Terminal Positioning ...
Page 42: ...42 9 11 1 FIGURE 12 LINE G ...
Page 55: ...55 11 5 Ladder Logic Diagram ...
Page 56: ...56 11 6 Electrical schematics ...
Page 57: ...57 ...
Page 137: ......
