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

9 | Electrical installation

9.3.11 To connect a Smart Grid

Installer reference guide
124
A
B
C
B
3 Fix the cable with cable ties to the cable tie mountings.
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
motorized 3‑way valve delivered with the domestic hot water tank.
NOTICE
Error. If you remove the jumper (open circuit) but do NOT connect the safety
thermostat, stop error 8H-03 will occur.
INFORMATION
The preferential kWh rate power supply contact is connected to the same terminals
(X5M/9+10) as the safety thermostat. Thus, the system can have EITHER preferential
kWh rate power supply OR a safety thermostat.
This topic describes 2 possible ways to connect the indoor unit to a Smart Grid:
▪ In case of low voltage Smart Grid contacts
A
14 13
Q4L
C
EPRA08~12EAV3+W1 + ETBH/X12EF6V+9W
Daikin Altherma 3 H MT W
4P634885-1 – 2021.03