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THERMA V
Split Type
4. Wiring diagrams
Element
Connecting Terminals
Marks
X1
L1, L2, L3, N, PE
X2
X3
N, Q9+, Q10-
X4
X5
BUS-A, BUS-B, GND, 10 V
X6
A+, B-, 12 V, GND
X7
A+, B-, 12 V, GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C
TV
RC
Power cable
A5, GND
Temperature sensor for external temperature
Q11, N
Cooling valve
Q12, N, PE
Additional external source
Q7, N, PE
Circulation pump of heating cycle 1 (optional)
Q8, N, PE
Circulation pump of heating cycle 2 (optional)
Mixing valve of heating cycle 2 (optional)
A7, GND
Temperature sensor of mixing-heating cycle 2 (optional)
D8, GND
Switch heating/cooling and/or PV signal (optional)
D7, GND
Thermostat of heating cycle 2 (optional)
D6, GND
Thermostat of heating cycle 1 (optional)
D5, GND
Remote on/off (optional)
Communication with the ODU
Communication spatial corrector (optional)
Communication with expansion unit (optional)
-
Flow electrical heater
-
Tree way valve for switching between heating and DHW
-
Basic input/output module MD1
D4
Flow switch
-
Web module (OPTIONAL)
TW Modbus
Communication with PLC
TX Modbus
Not in use
Ethernet
Internet connection
A6
Temperature sensor of the supply pipe
Q3
Main circulation pump
A1
Temperature sensor of the return line
-
Process module - PLC
WM
Communication with the Web module
TEX
MODBUS communication with the ODU
TS
Communication with the spatial corrector
TE2
Communication with the basic module MD1
RQ1
ALARM dry contact
RQ2
RESET dry contact
-
Power supply ~ 230 V / 12 V
L
Phase 230 V 50 Hz
N
Neutral 230 V 50 Hz
-
Protective earth
V-
GND
V+
12 V dc
A3
Temperature sensor refrigerant pipe - condenser inlet.
A4
Temperature sensor refrigerant pipe - condenser outlet.
-
Membrane Keyboard
A2
Temperature sensor of DHW
-
Electrical contactor of the electrical heater
-
Thermal protection of the electrical heater
-
RC Filter.
DHW Tank Integrated Unit
Description
9
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