Electrical connections
6 720 645 504 (2011/04) en
34
11.4.4 Power supply of EVU signal
EVU relay (no. 4, A1, A2, no. 2 Figure 25) with 3 main
contacts and 1 auxiliary contact must be dimensioned in
accordance with the heat pump's fuse rating. The relay
is provided by an electrical fitter or a power company.
Control requires a potential-free contact signal on the
external input (1 / C Figure 25). External input
connected = EVU block active.
During the blocked period, the energy supply cut-off
symbol is displayed in the menu display.
Fig. 25 Blocked period enabled
1 Power meter
2 Tariff control
3 Control unit heat pump
4 Low-tariff
EVU means a special electrical connection
used primarily in countries like Germany and
Austria.
Complete screed drying before connection
of the EVU signal.
B Activate the energy supply cut-off in the
control unit under menu External control
(Chapter 16.5) after drying and
connection of the EVU signal.
2
1
3
4
6 720 614 366-50.2I
Time difference
B Ensure a maximum time difference of 5
seconds between current control and
EVU signal control.
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