Nimbus Compact M NET R32 Installation Manual UK
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IN G<br />
Electrical connections<br />
The cross-section and length of the cables must be sized according<br />
to the power indicated on the indoor unit’s data plate.<br />
a<br />
a<br />
Once you have completed the connections between<br />
the indoor and outdoor units, put both<br />
electrical panels back into place.<br />
Always keep the power and signal cables separate.<br />
Signal terminal board<br />
Power terminal board<br />
M2<br />
M1<br />
OUT<br />
AUX 2<br />
OUT AUX 1<br />
HV<br />
IN 1<br />
HV<br />
IN 2<br />
OUT<br />
AUX 4 AUX OUT 3<br />
PM AUX V1 V2<br />
N ⏚ L LC N LO LC N LO<br />
SO1<br />
SO1 OPEN ATG BUS DHW HEATER ANODE<br />
TA1 TA2 SE TNK<br />
IN<br />
Reference<br />
ANODE<br />
TA1<br />
TA2<br />
SE<br />
TNK<br />
EBUS 2<br />
IN-AUX 1<br />
IN-AUX 2 STE<br />
BUF<br />
OPEN THERM<br />
DHW HEATER<br />
ATGBUS<br />
S01<br />
G<br />
EBUS2<br />
THERM GND BUS +24V GND +24V GND B T<br />
RL FB STH<br />
IN IN AUX<br />
AUX 1 2 STE<br />
BUF<br />
Fig. 65<br />
Description<br />
Connection to the tank protection anode.<br />
Observe the electrical polarities.<br />
Contact room thermostat connection, zone<br />
1. (Bridged by default).<br />
Room contact thermostat connection, zone<br />
2.<br />
Outdoor temperature sensor connection.<br />
Tank sensor connection.<br />
BUS connection for system interface.<br />
Auxiliary input 1 connection (dry contact).<br />
Select the operating mode through parameter<br />
1.1.3.<br />
Connection of auxiliary input 2 (dry contact).<br />
Connection of the safety thermostat<br />
to the EM board. Select the operating mode<br />
through parameter 1.1.4. By default it is<br />
set to under-floor safety thermostat and is<br />
bridged.<br />
Connection to the puffer sensor.<br />
Connection to thermostat Open - Therm<br />
Connection to the “Heating Element” accessory<br />
of the tank<br />
Connection between indoor and outdoor<br />
unit<br />
Connection of the terminals marked IN and<br />
G to the power measurement device.<br />
Reference<br />
OUT-AUX 1 /<br />
2 / 3 / 4<br />
HV input 1<br />
HV input 2<br />
PM AUX<br />
V1<br />
V2<br />
N<br />
L 230V<br />
Fig. 66<br />
Description<br />
Auxiliary output, potential-free contact. Select<br />
the operating mode through parameters<br />
1.2.0/ 1.2.1 / 1.2.2 / 1.2.3.<br />
230 V input. Select the operating mode<br />
through parameter 1.1.0.<br />
230 V input. Select the operating mode<br />
through parameter 1.1.1.<br />
Auxiliary pump connection.<br />
Diverter valve connection for domestic water<br />
supply distribution network.<br />
Diverter valve connection for cooling circuit.<br />
EN / 39
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