4.6 Wiring diagram
16 Fan
32 Heating circulating pump
34 Heating temperature sensor
42 DHW temperature probe
44 Gas valve
72 Room thermostat (not supplied)
81 Ionization/ignition electrode
95 Diverter valve
44
X04-8
X04-9
230V
X04-1
50Hz
GROUND
95
X04-5
X04-6
X04-7
288
16
X01-3
X01-4
X01-5
X01-6
X01-7
Attention: Before connecting the room thermostat or the remote timer control, remove
A
the jumper from terminals 5-6 on the terminal block.
To connect more zones of the hydraulic system controlled by thermostats with voltage-free
contact and the timer control has to be used for remote control of the boiler, the voltage-
free contacts of the zones must be connected to terminals 1-2 and the timer control to ter-
minals 5-6.
ALL CONNECTIONS TO THE TERMINAL BLOCK MUST BE WITH VOLTAGE-FREE
CONTACTS (NOT 230V).
342
EN
136
32
X08-13
X08-14
X08-12
X05
8
1
9
X07
X11
LC32
fig. 65- Wiring diagram
cod. 3541V512 - Rev 00 - 07/2022
ALHENA TECH C
136 Flowmeter
138 External probe (optional)
139 Remote timer control (optional)
186 Return sensor
191 Fume temperature sensor
288 Frost protection kit
246 Pressure transducer
ON/OFF switch (configurable)
A
191
42
186
1
14
1
5
1
X08
X09
1.2
bar
246
45
°C
34
25
°C
X16
N
L
5
6
81
72
139
138
A