Daikin EBSX-D - To Connect a Smart Grid

6 Electrical installation
Installation manual
30
EBSH/X(B)11+16P50D
Daikin Altherma 3 R ECH₂O
4P759878-1 – 2024.01
[9.8.1]=3 (Benefit kWh power supply = Safety
thermostat)
1 Open the following (see "4.2.1To open the indoor unit"[413]):
1 User interface panel
1
3
5
2
4
2 Switch box
3 Switch box cover
4 Top cover
5 Side panel
2 Connect the safety thermostat (normally closed) cable to the
appropriate terminals as shown in the illustration below.
Note: The jumper wire (factory-mounted) must be removed from the
respective terminals.
3 Fix the cable with cable ties to the cable tie mountings. General
information, see "6.3.1 To connect the electrical wiring to the
indoor unit"[422].
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.
6.3.13 To connect a Smart Grid
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 Smart Grid operation mode
1
2
0 0 Free running
0 1 Forced off
1 0 Recommended on
1 1 Forced on
The use of a Smart Grid pulse meter is not mandatory:
If Smart Grid pulse meter is… Then [9.8.8] Limit setting kW
is…
Used
([9.A.2] Electricity meter 2 ≠
None)
Not applicable
Not used
([9.A.2] Electricity meter 2 =
None)
Applicable
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
[9.8.4]=3 (Benefit kWh power supply = Smart Grid)
[9.8.5] Smart Grid operation mode
[9.8.6] Allow electrical heaters
[9.8.7] Enable room buffering
[9.8.8] Limit setting kW
The wiring of the Smart Grid in case of low voltage contacts is as
follows:
8
7
S11S
65
S S10
43
X 5M1
S S4
109
a
21
a Jumper (factory-mounted). If you also connect a safety
thermostat (Q4L), replace the jumper with the safety
thermostat wires.
S4S Smart Grid pulse meter
1
/S10S
Low voltage Smart Grid contact 1
2
/S11S
Low voltage Smart Grid contact 2
1 Open the following (see "4.2.1To open the indoor unit"[413]):
1 User interface panel
1
3
5
2
4
2 Switch box
3 Switch box cover
4 Top cover
5 Side panel
2 Connect the wiring as follows: