6.3 Electrical connection points
This table shows how different electrical equipment should be connected. The positions in the table refers to the system solutions.
Pos Accessory*
(Expansion card re-
quired)
Description Connect to
5 Outdoor unit communication Indoor BusA to outdoor F1 / COM indoor BusB to out-
door F2 / COM
36 Circulation pump system 101.2 / N / PE
50 Outdoor sensor 118.5 / COM
51 System supply sensor 118.2 / COM
53 Hot water sensor lower 114 / COM
55 Hot water sensor top 113 / COM
60* Pool sensor 208.1 / COM
62 Room sensor DC to 121.1 / A to 121.3 / B to 121.5 / GND to GND
71 Flow guard Indoor unit CN80.1 and CN80.2
72 Ext. aux. heater shunt +102.3 / -102.4 / N
77 Reversing valve hot water M3.3 to L1:1 / M3.6 to 101:5 / M3.2 To N
101 * Reversing valve pool M3.3 to L1:1 / M3.6 to 201.1 / M3.2 to N
107 Shunt distribution circuit 1 +102.5 / -102.6 / N
108 Supply sensor distribution circuit 1 118.3 / COM
109 Circulation pump distribution circuit 1 101.3 / N / PE
136 Buffer tank sensor 118.1 / COM
143 Return line shunt +102.7 / -102.8 / N
207* Shunt distribution circuit 2 +202.1 / -202.2 / N
208* Supply sensor distribution circuit 2 208.3 / COM
209* Circulation pump distribution circuit 2 201.5 / N / PE
211 Valve zone 1 102.1 / PE / N
212 Valve zone 2 102.2 / PE / N
213 Room sensor zone 1 119.2 / COM / L1:1 / N
214 Room sensor zone 2 119.1 / COM / L1:1 / N
312 Reversing valve bypass heating/cooling M3.3 to L1:1 / M3.6 to 101.6 / M3.2 to N
317 External aux heater 230VAC from 101.4 / N
Alternative: Pot free relay max in 250V 8A connect in
101.8 out 101.16
308 Condenser circulation pump on/off 101.1 / N / PE
308 Condenser circulation pump 0-10V 101.1 / N / PE alarm to 116.2 / COM
344* Alarm relay 201.6 / N
405 Radiator out sensor 110 / COM
408 EVU / smart grid 1 119.1 / COM
409 Smart grid 2 115 / COM
422 Dew point sensor 119.2 /COM
456* Current limiter L1 to 203.1 L2 to 203.2 L3 to 203.3 And COM x 3
Installation Guide iTec XT
AWIXT01IG0102 Thermia AB
46
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