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10.3
Electrical diagram RHOB42AAV1
A
Earth connection exchanger
B
Ignition hood
C
Boiler controller
E
Earth connections
Connector X4
6-7
24V=
8-9
9-10
11-12
Connector X2
2-4
~
230V
3-6
7-8
3-5-6
Connector X5
ROTEX Heating Systems GmbH
F
Fuse (3.15 A T)
G
Gas block + ignition module
I
Ignition/ionization pin
M
Mains electricity supply
On/off room thermostat
(0.1A-24Vdc) and/or frost thermostat
Outdoor sensor
(12 kOhm / 25°C)
Tank sensor (remove through-connection)
OpenTherm room thermostat
(6-7 should be open)
Mains supply 230 V (2 = L (brown), 4 = N (blue))
Electricity supply for fan (230 V)
CH pump
(8 = L (brown), 7 = N (blue))
Three-way valve for external tank
(e.g. VC4013 Honeywell 230V~)
Computer interface
P1
CH pump
S7
R
V
Resistance
S1
Leaving water sensor
S2
Return sensor
(3 = L (brown), 5 = Switch (black), 6 = N (blue))
CH water pressure sensor
Fan (230V)
52
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