Intergas HRE 36/40 - Power, Pump, and Weather Compensation Settings

Intergas Heating Ltd 36
10.4 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 during burning is increased slowly and is reduced as soon as the set
supply temperature is reached (modulate on T flow).
10.5 Adjusting pump setting
The switch for adjusting the pump setting is located on the CH pump connection box
(Factory setting III).
1. Adjust the pump setting depending on the maximum power set and the water
resistance of the installation. See diagram: pressure loss of appliance and
pump water head, positions I, II and III.
2. Check the temperature difference between the appliance supply and return: this
must be approximately 20°C.
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
AA. Combi Compact HRE 36/40
I Pump setting I
II Pump setting II
III Pump setting III
X Flow in l/h
Y Pressure loss / water head in mH
2
O
WILO RS 15/4.1
WILO RS 15/7-3
AA