Setting Maximum Ch Power; Setting Pump Setting - Rotex GW-20 H12 Instrucciones De Instalación

7.4

Setting maximum CH power

The maximum CH power is set to 70% in the factory. If more power is required for
the CH installation, the maximum CH power can be changed by adjusting the rpm of
the fan. See table: Setting CH power.
This table shows the relation between the rpm of the fan and the unit power.
Desired CH power in kW (approx.)
RHOB*AAV1H
12 18 42
11.5 40.9
9.5 17.8 34.8
9.2 16.8 28.5
8.1 14.8 24.5
6.9 12.7 20.5
5.8 10.6 16.4
4.6 8.3 12.3
3.4 6.4 10.2
- 5.4 7.8
Caution:
The power is slowly increased when the fire is lit and is lowered when the set leaving
water temperature is reached (modulation on Ta).
7.5

Setting pump setting

The RHOBG**AAV1 CH boilers are fitted with a modulating A-class pump which
modulates on the basis fo the CH power provided. The minimum and maximum
capacity of the pump can be adjusted with the parameters 3 and c. Also see par. 7.2.
The set value of parameter 3. (max. pump setting) is the percentage of the maximum
pump capacity and is linked to the set maximum CH power as set with parameter 3
The set value of parameter c. (min. pump setting) is linked to the minimum CH-power
as set with parameter c
If the CH load modulates between the minimum and maximum value, the pump
capacity will modulate along proportionately.
De minimale doorstroom hoeveelheid
155 l/h
240l/h
510 l/h
750 l/h
1150 l/h
Pressure loss graph unti CH side
A à RHOB12AAV1H & RHOB18AAV1H
B à RHOB42AAV1H
X à Flow over CH circuit in l/h
Y à Pressure loss / water head in mH
Settings on service display
(in % maximum rpm)
100
85
80
70
60
50
40
30
25
Ingesteld vermogen
5.4 kW
8,5 kW
17,8 kW
26,2 kW
40,9 kW
O
2
40