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BLUEHELIX TECH RRT
4.6 Wiring diagram
16
Fan
32
Heating circulating pump
34
Heating temperature sensor
44
Gas valve
72
Smart thermostat option (not supplied)
81
Ionistion/ignition electrode
95
Diverter valve
114 Low water pressure switch
138 OTC external sensor (option)
139 OpenTherm Smart thermostat (optional)
186 Return sensor
191 Flue temperature sensor
A
ON/OFF switch (configurable)
Attention: Remove the jumper on the terminal block before connecting the room thermostat or the remote
A
timer control.
To comply with the Government "Boiler plus scheme" you can connect a "smart thermostat" to control the heat-
ing demand. Connect the smart thermostat to terminals 5-6 (72) It must be low voltage or OpenTherm compli-
ant (139).
ALL CONNECTIONS TO THE TERMINAL BLOCK MUST BE WITH VOLTAGE-FREE CONTACTS (NOT 230V).
EN
18S / 24S / 30S
cod. 3541P151 - Rev. 00 - 11/2018
49
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