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Diagram illustrating heat output in relation to "air ∆p" ("25" model)
4.4. 1
30
25
20
15
10
5
0
10
Diagram illustrating heat output in relation to "air ∆p" ("30" model)
4.4.2
35
30
25
20
15
10
5
0
10
TABLE 4/a - G20
Variable heat output
(80-60°C) (50-30°C)
kW
kW
29,3
32,0
22,9
25,0
16, 1
17,6
10,4
11,4
Air ∆p is measured during boiler operation using a differential pressure gauge connected to the ventilator intake.
*
** The gas consumptions refer to the calorific value at standard conditions at 15°C - 1013 mbar.
112
20
30
40
50
Air ∆p mm H
∆p aria mm H
G20
20
30
40
50
60
Air ∆p mm H
∆p aria mm H
2
Air ∆p*
Gas consum.**
(80-60°C) (50-30°C)
G20
mm H
O
mm H
O
m
3
2
2
63,8
66,4
45,0
45,0
2,48
25,0
25,0
1,75
8,4
9,2
TABLE 4
Variable heat output
(80-60°C) (50-30°C)
kW
24,0
18,7
13,2
8,6
Air ∆p is measured during boiler operation using a differential pres-
*
sure gauge connected to the ventilator intake.
** The gas consumptions refer to the calorific value at standard con-
ditions at 15°C - 1013 mbar.
60
O
O
2
2
35
30
25
20
15
10
5
70
0
O
O
2
TABLE 4/b - G31
Variable heat output
(80-60°C) (50-30°C)
/h st
kW
3, 1 7
29,3
21,8
15,4
1, 1 4
10,4
Gas consumption**
Air ∆p*
G20
kW
mm H
O
m
/h st
3
2
26,4
49,5
2,63
20,6
35,0
2,06
14,6
20,0
1,46
9,5
7,0
0,95
G31
10
20
30
40
50
Air ∆p mm H
∆p aria mm H
Air ∆p*
(80-60°C) (50-30°C)
kW
mm H
O
mm H
O
2
2
32,0
68,4
70,4
23,4
45,0
45,0
16,6
25,0
25,0
11,4
9,2
9,5
G31
kg/h
1,01
0,79
0,56
0,36
Fig. 25
60
70
O
O
2
2
Gas consum.**
G20
m
3
/h st
1,52
1, 1 9
0,84
0,55
Fig. 25/a
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