Connection Possibilities For The Pcb (Scu- X03) - REMEHA Quinta Pro 30 Installation And Service Manual

Quinta Pro 45 - 65 - 90 - 115
X4
X3
SCU-X03
X1 X2
T002038-B
080310 - 123157-AA
4.9.7. Connection possibilities for the PCB (SCU-
X03)
The control PCB SCU-X03 can control a modulating central heating
pump. Depending on the make and type of pump, the pump can be
controlled by a 0-10 V, 4-20 mA or PWM signal. The speed of the
pump is modulated, based on the signal received from the boiler.
For correct connection of the pump, see the documentation
supplied with the pump.
n Connect on/off contact
Connect the on/off contact of the central heating pump to the
connector X1.
CAUTION
Do not use the on/off contact to interrupt the power supply
to the pump.
n Connect central heating pump
The control system of the central heating pump is connected to
connector X2.
Select the type of signal that will be received from the boiler using the
rotary knob SW1 on the control PCB. See table below:
No. Description
0 Pump modulation signal
1 Required heat output of boiler
2 Current heat output of boiler
3 -
4 -
5 -
6 -
7 -
8 -
9 -
4. Installation
45