No. C-NO
C-NC
7
CH-mode Standby
CH-mode Active
8
DHW-mode Standby
DHW-mode Active
9
CH-pump Standby
CH-pump Active
4.9.6.
Connection possibilities for the PCB (SCU-
X02)
The connection options for the control PCB (SCU-X02) are described
in the paragraphs which follow.
n
Control of external three-way valve (3wV (230 VAC)
The external three-way valve (230 VAC) can be used when
connecting an indirectly heated calorifier.
The 3-way valve is connected to the
X3
terminals of the connector.
The three-way valve is connected as follows:
4
N = neutral
4
C = central heating
4
D = domestic hot water
n
Control of external three-way valve (3wV (24 VAC)
The external three-way valve (24 VAC) can be used when connecting
an indirectly heated calorifier. The neutral position of the three-way
valve can be set using parameter
p34
.
The 3-way valve is connected to the
X4
terminals of the connector.
The three-way valve is connected as follows:
4
N = neutral
4
L = live (24 AC)
4
C = common (Central heating or DHW)
n
Position of the reversal valve (JP1)
The position of the 3-way valve can be set using a jumper at
JP1
.
4
Jumper 1: The settings for central heating and sanitary hot water
are the default settings.
T002884-A
SCU-X02
2
C
1
Jp1
X2
X2a
X4
3wV
L
N
C
L
N
C
X3
X1
3wV
N C
3wV
N C D
D
F 2AT
Quinta Pro 30 - 45 - 65 - 90 - 115
4. Installation
250413 - 123157-03
39
