To Connect A Smart Grid - Daikin Altherma 3 H MT ECH2O Installer's Reference Manual

9.3.13 To connect a Smart Grid

EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663478-1 – 2021.07
NOTICE
Make sure to select and install the safety thermostat according to the applicable
legislation.
In any case, to prevent unnecessary tripping of the safety thermostat, we
recommend the following:
▪
The safety thermostat is automatically resettable.
▪
The safety thermostat has a maximum temperature variation rate of 2°C/min.
▪
There is a minimum distance of 2 m between the safety thermostat and the
3‑way valve.
NOTICE
Error. If you remove the jumper (open circuit) but do NOT connect the safety
thermostat, stop error 8H-03 will occur.
INFORMATION
ALWAYS configure the safety thermostat after it is installed. Without configuration,
the unit will ignore the safety thermostat contact.
This topic describes 2 possible ways to connect the indoor unit to a Smart Grid:
▪ In case of low voltage Smart Grid contacts
▪ In case of high voltage Smart Grid contacts. This requires the installation of the
Smart Grid relay kit (EKRELSG).
The 2 incoming Smart Grid contacts can activate the following Smart Grid modes:
Smart Grid contact
1
0
0
1
1
The use of a Smart Grid pulse meter is not mandatory:
If Smart Grid pulse meter is...
Used
([9.A.2] Electricity meter 2 ≠
None)
Not used
([9.A.2] Electricity meter 2 =
None)
In case of low voltage Smart Grid contacts
Wires (Smart Grid pulse meter): 0.5 mm²
Wires (low voltage Smart Grid contacts): 0.5 mm²
9
Smart Grid operation mode
2
0
Free running
1 Forced off
0 Recommended on
1 Forced on
Then [9.8.8] Limit setting kW is...
Not applicable
Applicable
Electrical installation
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Installer reference guide
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