Nimbus Compact M NET R32 Installation Manual UK
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Hydraulic connections<br />
4.3 Example of schematic hydraulic diagram<br />
1 ZONE FS<br />
AB<br />
B<br />
A<br />
OR<br />
A<br />
B<br />
AB<br />
Fig. 49<br />
OR<br />
HV<br />
IN 1<br />
HV<br />
IN 2<br />
OUT<br />
AUX 4<br />
OUT PM AUX V1 V2<br />
AUX 3 N L LC N LO LC N LO<br />
L1 L2 L3 N<br />
3ph<br />
L2<br />
L’<br />
L1<br />
N’<br />
L1<br />
L2<br />
L3<br />
L3<br />
N<br />
N<br />
1ph<br />
STT<br />
S<br />
G<br />
OR<br />
EH1 EH1 ST1 ST1 L N<br />
EH1 EH1 ST1 ST1 L1 L2 L3<br />
N<br />
IN G<br />
GND BUS +24 V GND RL FB STH +24 V GND<br />
S01 OPEN ATG BUS DHW HEATER ANODE EBUS2 IN IN AUX<br />
B T<br />
2 STE TA1 TA2 SE TNK<br />
BUF<br />
THERM AUX 1<br />
OUT OUT<br />
AUX 2 AUX 1<br />
1ph<br />
3ph<br />
Fancoil: Z0<br />
OR<br />
Underfloor Heating: Z1<br />
CHILLER BOILER<br />
Fancoil: Z1<br />
a<br />
a<br />
i<br />
Fig. 50<br />
It is forbidden to disconnect the power supply to the unit if the outdoor temperature can fall below ZERO (risk<br />
of frost). Drain the central heating and domestic hot water systems to prevent the risk of ice forming.<br />
Do not remove the heating delivery temperature sensor (inside the heating elements).<br />
Carry out the electrical connections after having completed all the hydraulic connections.<br />
EN / 31