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[HT/NT Contact] = 1
[HT/NT Contact] = 0
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
x
Set-up and installation
Installation and maintenance instructions
30
Daikin Altherma M ECH
2
O
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
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.
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
4.5.16 Symbols and key names for connection and wiring diagrams
Symbols
Explanation
Symbols
Explanation
Safety earthing
External cabling (number of individual cores and
the mains voltage are partially quoted.)
Low external voltage earthing
Pushbutton
Connection terminal
DIP switch
Plug connection
Optional component
Terminal rail
Plug and socket connection
2-core cabling (non-screened)
3-core cabling (non-screened)
4-core cabling (non-screened)
5-core cabling (non-screened)
6-core cabling (non-screened)
Screened cabling (e.g. 3-core)
Tab.
4-2 Explanation of symbols for connection and wiring diagrams
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