Intergas Heating Ltd
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10.6 Setting maximum CH power
The maximum CH power is set at 70% in the factory. If more or less power is necessary
for the CH installation, the maximum CH power can be changed by changing the fan
rpm. See table Setting CH power.
This table shows the relationship between the fan rpm and the appliance power.
Setting CH power
Desired CH power (in kW approx.) Setting on service display (in % of
max. rpm)
24/18 28/24 36/30 36/40
- - - 40,9
99
17,8 22,8 26.3 34,8
± 83
14,8 19,1 22,6 28,5 70
12,7 16.4 19,0 24,5
60
10,6 13,7 15,8 20,5
50
8,3 11,0 12,7 16,4
40
6,4 8,3 8,5 12,3
30
5,4 6,9 7,1 10,2 25
- - - 7.8
20
NOTE
The power is reduced as soon as the set supply temperature is
reached (modulate on T flow).
10.7 Adjusting pump setting
1. Adjust the pump setting dependent on the maximum power set and the water
resistance of the installation by setting the parameters 3. (3 dot) and c. (c dot).
The pump speed will now modulate between the minimum and maximum value
proportional to the fan speed.
2. Check the temperature difference between the appliance supply and return: this
must be approximately 20°C.
Make sure the flow does not undershoot the values mentioned in the table below.
The minimum flow quantity (l/h) Power setting (kW)
155 5,4
510 17,8
650 22,8
750 26,3
1150 40,9
Appliance pressure loss graph, CH side
A. Combi Compact HRE 24/18
B. Combi Compact HRE 28/24
C. Combi Compact HRE 36/30
D. Combi Compact HRE 36/40
X Flow in l/h
Y Pressure loss / water head in mH
2
O
Wilo Yonos Para 15-7
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