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4
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Set-up and installation
[HT/NT Contact] = 1
1
Mains connection box for off-peak mains connection
2
Receiver for evaluating the HT/NT control signal
3
Heat pump outdoor unit power supply (see respective installation
instructions for the heat pump outdoor unit)
4
Potential-free switching contact for heat pump indoor unit
Fig. 4-44 Connection of HT/NT switching contact
4.5.16 Symbols and key names for connection and wiring diagrams
Symbols
Safety earthing
Low external voltage earthing
Connection terminal
Plug connection
Terminal rail
2-core cabling (non-screened)
4-core cabling (non-screened)
6-core cabling (non-screened)
Tab. 4-2 Explanation of symbols for connection and wiring diagrams
Installation and maintenance instructions
30
[HT/NT Contact] = 0
Explanation
4.5.15 Connecting an intelligent controller
(Smart Grid - SG)
As soon as the function is activated through the parameter
[SMART GRID] = 1 (see controller operating instructions), the
heat pump is switched to Stand-by, standard or a mode with
higher temperatures depending on the utility company signal.
To do this, the intelligent controller's potential-free switching
contacts SG1/SG2 must be connected to connector J8,
Smart Grid and EVU connection, on the RoCon BM2C printed
circuit board (see fig. 4-45).
As soon as the Smart Grid function is active, the HT/NT function
is automatically deactivated. The heat pump is operated differ-
ently depending on the value of the parameter [Mode SG] (see
controller operating instructions).
Fig. 4-45 Smart Grid connection
Symbols
External cabling (number of individual cores and
the mains voltage are partially quoted.)
Pushbutton
DIP switch
Optional component
Plug and socket connection
3-core cabling (non-screened)
5-core cabling (non-screened)
Screened cabling (e.g. 3-core)
Explanation
Daikin Altherma M ECH
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
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