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T dhw 2: Temperature sensor at the top of the DHW tank
T out: not used
Fig.27
17
16
1 R-Bus: SMART TC° connected room thermostat,
on/off thermostat, modulating thermostat or
OpenTherm thermostat - CIRCA1 circuit
2 R-Bus: SMART TC° connected room thermostat,
on/off thermostat, modulating thermostat or
OpenTherm thermostat - CIRCB1 circuit
3 R-Bus: SMART TC° connected room thermostat,
on/off thermostat, modulating thermostat or
OpenTherm thermostat - CIRCC1 circuit
4 Programmable and 0-10 V input
5 Outdoor temperature sensor
6 Impressed current anode
7 Flow sensor - CIRCA1 circuit
8 Flow sensor - CIRCB1 circuit
9 Flow sensor - CIRCC1 circuit
10 Domestic hot water sensor on the DHW1 second
domestic hot water circuit
7756241 - v02 - 19062020
15
14
13
Description of the SCB-10 PCB
23
22
5
12 11 10
11 System sensor 2
12 System sensor 1
13 Pump and safety thermostat - CIRCA1 circuit
14 Three-way valve - CIRCA1 circuit
15 Pump and safety thermostat - CIRCB1 circuit
16 Three-way valve - CIRCB1 circuit
17 Domestic hot water tank pump when using a second
domestic hot water circuit
18 Connectors for S-BUS cables used for cascade
19 L-BUS connection
20 L-BUS connection to EHC–05 PCB
21 Tool service connector
22 ConnectorsMod-BUS
23 Coding wheel, selects the generator number in the
cascade
21
19
20
X2
18
4
3 2
1
9
8
7
6
MIT-M
5 Installation
X3
37
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