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2.3 Connection Description
2.3.1 Wiring diagrams for single heating zone
A - Boiler control
Hydraulic diagram:
ON / OFF
B - Pump control in radiator heating system
Hydraulic diagram:
C - Pump control in underfloor heating system
Hydraulic diagram:
Boiler - Boiler connection*
- Boiler's contacts for ON/OFF
thermostat (according to the
boiler's instructions)
Buffer / Clutch
Pump
8
P1
P1
T
Legend:
Thermostatic
T
mixing valve
Radiator heating
Underfloor heating
Electric diagram:
AC 230V
L
CH
L
OUTPUT
COM
NO
N
N
Electric diagram:
AC 230V
L
CH
OUTPUT
COM
NO
P1
N
NO, COM - voltage-free output
L
iT500TX
COM
3V
iT500RX
2 x AA
NO
N
L
COM
iT500RX
NO
N
Symbols explanation:
L, N - power supply 230V
- fuse
iT500TX
3V
2 x AA
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