Electrical connections
6 720 645 504 (2011/04) en
31
11.4 Electrical connection wiring diagram
11.4.1 Overview of connection between distribution box and heat pump (HC 22 - 33)
Fig. 22 Overview of connection between distribution box and heat pump
1 Power supply to the distribution box
2 Power meter for heat pump, low tariff
3 Tariff control
4 Power meter for the property, 1-phase high tariff
5 Compressor 1 and 2
6 Control unit, E21.G2, E22.G2, EVU, external pumps
7 Collector circuit pump E21.G3, E22.G3
EVU Property's distribution box
EWP Heat pump
*) Strap which is removed in the event of separate power supply
D External power meter
1
2
3
4
5 6
7
EVU
EWP
6 720 618 981-11.1I
EVU means a special electrical connection
used primarily in countries like Germany and
Austria.
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