ROBUA QAC34/101, Installation Manual

Page: 12 / 48

Assembly and installation
12
2
Table 2.1 Line Voltage connections to Siemens RVS21.826 board connectors
Function (Siemens logo on water circuit diagrams and description)
Logo on connector
Color
Siemens connector code
L 230 VAC phase input to RVS21.826 Pre-wired
X10
Green
BPZ:AGP5S.03A/109 Ground connection to RVS21.826 Pre-wired
N Neutral input to RVS21.826 Pre-wired
EX1 K18 unit alarm signal input on RVS21.826 Pre-wired
X11
Green
BPZ:AGP5S.04D/109
EX2 Not used
EX3 Not used
EX4 Not used
QX1 Y1 - heating circuit 1 mixer valve open phase output
X12
Green
BPZ:AGP5S.07H/109
N
Heating circuit 1 mixer valve neutral output
QX2
Y2 - heating circuit 1 mixer valve close phase output
QX2
Not used
N Q6 - Heating circuit 2 water pump neutral output / Zone 2 valve
FX3 Phase input for output QX3 Pre-wired
QX3 Q6 - Heating circuit 2 water pump phase output / Zone 2 valve
QX4 DHW diverter valve control phase output (2) Pre-wired
X15
Orange
BPZ:AGP5S.07M/109
QX4
Q3 - DHW diverter valve phase inverse output (1)
N Neutral output
Pre-wired
QX5 Q2 - Heating circuit 1 water pump phase output / Zone 1 valve
N Q2 - Heating circuit 1 water pump neutral output / Zone 1 valve
ZX6 Not used
N Not used
(1) Not normally used. It may be used:
* In place of Q3 (see Table 2.2
p. 12) if the DHW diverter valve is set to DHW when the phase is NOT present at the output.
* In addition to Q3 if the valve has an actuator with two terminals which are excited alternately to set the valve to Heating or DHW circuit.
(2) Connect the valve to the CTRL output (Table 2.2
p. 12).
Table 2.2
Line Voltage connections to bottom LH terminal block in CSK18 enclosure
Function (description) Group of terminals
L 230 VAC phase power input
LINE IN N Neutral power input
Ground connection
L DHW diverter valve power fixed phase output
DHW Q3
CTRL Q3 - DHW diverter valve power control phase output (1)
N DHW diverter valve power neutral output
DHW diverter valve power ground connection
(1) Output Q3 is active (230 VAC phase present) during DHW service and inactive during space heating service. See note (1) to Table 2.1 p. 12.
Table 2.3
p. 13 lists the SELV supply and signals con-
nections on the extractable connectors at the bottom
and right edges of the Siemens RVS21.826 board (once
more with reference to the specific position of the board
inside the enclosure), while Table 2.4
p. 13 lists the SELV
signals connections on the terminal block at the bottom
right interior of the CSK18 enclosure.
The connections in Table 2.4
p. 13 include those
which connect the System controller to the K18
unit.