6.3.2
Electrical connection
Fig.58
Boilers in c 1 underfloor heating c 1 direct c 1 domestic hot water tank
1
2
3
4
A
ux 1-2
23
0 V
TA
TS
L
N
T1
T2
L
L
N
N
S1
S2
L
N
1
2
3
4
A
ux 1-2
23
0 V
TA
TS
L
N
T
1
T
2
L
L
N
N
S1
S2
L
N
MW-3000040-06
167
200
201
167
158
117
2
44
34
34
26
11
21
38
33
38
AVS75
OCI345
OCI345
1 2 3
1 2 3
X30
X40
X41
X30
X40
2 Heating pump
11 Heating pump
21 Outside temperature sensor
26 DHW booster pump
33 Domestic hot water temperature sensor
34 Primary pump
38 Room temperature sensor
44 France: 65 °C safety thermostat with manual reset
for underfloor heating (DTU 65.8, NF P52-303-1)
Austria: safety device to safeguard against
overheating: according to the type of underfloor
heating
Other countries: safety device to safeguard against
overheating of the underfloor heating, in accordance
with prevailing regulations
117 Three-way mixing valve
158 Flow temperature sensor
167 Boiler control panel
200 Lead boiler
201 Slave boiler
6 Connecting diagrams and configuration
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