18
SUPPLY
230VAC
BOILER
B1
B2
X-Relay
SEC. PUMP
VOLT FREE
230VAC
L
L
L
N
N
N
BA Master Controller (Main Control)
THERMAL ACTUATORS
1
2
3
4
5
6
L
N
L
L
L
L
L
N
N
N
N
N
1
2
3
4
5
6
L
N
L
L
L
L
L
N
N
N
N
N
THERMAL ACTUATORS
7
8
L
L
N
N
7
8
L
L
N
N
SWITCH
EXT.
I
O
+
+
T
T
DISPLAY
L
Y
N
X
SUPPLY
SENSOR
THERMOSTAT BUS
+
T
+
T
APP
SENSOR
THERMOSTAT BUS
MIXING VALVE
0 - 10V
MIXING VALVE 24V AC
+
T
ON
OFF
1 2 3 4 5 6 7 8
C
B
A
9
8
7
6
5
4
3
2
1
0
F
E
D
7
6
5
4
3
2
1
0
9
8
DIP SWITCH
SUPPLY
230VAC
BOILER
B1
B2
X-RELAY
UFH PUMP
230VAC
L
L
N
N
C1
C2
Link
L
N
230V Boiler output signal
BOILER
B1
B2
Potential free
boiler output
signal
Remote start
terminal of
boiler
230V Output signal to
control secondary pump
for UFH system
L
N
Connection from BMS timed output
or external time switch
SWITCH
EXT.
I
O
15. Intergrating BMS with REHAU Intelligent Controls
The connections are volt free.
Do not apply a voltage to the
EXT SWITCH as this will damage the unit.
FIxEd Flow tEMPERAtURE contRol
FIxEd tEMPERAtURE MIxIng oPtIonS
2.0
2.2