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6 Electrical installation
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
1
2
0
0
0
1
1
0
1
1
The use of a Smart Grid pulse meter is not mandatory:
If Smart Grid pulse meter is... Then [9.8.8] Limit setting kW
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
[9.8.4]=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:
X 5M
1
3
4
5
6
7
8
9
10
a
1
2
S
10
S
S11S
S S
4
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
Low voltage Smart Grid contact 1
/S10S
2
Low voltage Smart Grid contact 2
/S11S
1 Connect the wiring as follows:
Installation manual
24
Smart Grid operation mode
Free running
Forced off
Recommended on
Forced on
is...
Not applicable
Applicable
A
B
3 4 5 6
7 8
9 10
X 5M
1
2 Fix the cables with cable ties to the cable tie mountings.
In case of high voltage Smart Grid contacts
Wires (Smart Grid pulse meter): 0.5 mm²
Wires (high voltage Smart Grid contacts): 1 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 high voltage contacts is as
follows:
X1 M
2
23
25
24
25
A1
A1
A2
A2
N
L
N
L
K1A
K2A
2
1
a
b
STEP 3
STEP 1
STEP 1
Smart Grid relay kit installation
STEP 2
Low voltage connections
STEP 3
High voltage connections
1
High voltage Smart Grid contact 1
2
High voltage Smart Grid contact 2
a, b
Coil sides of relays
c, d
Contact sides of relays
e
Jumper (factory-mounted). If you also connect a safety
thermostat (Q4L), replace the jumper with the safety
thermostat wires.
f
Smart Grid pulse meter
1 Install the switch box metal insert.
X 5M.4
1
1
S10S
X 5M.3
1
X 5M.10
1
S4S
X 5M.9
1
X 5M.6
1
2
S11S
X 5M.5
1
A
B
X 5M
1
X 5M
1
4
3
6
5
8
7
10
9
K1A
K2A
S4S
c
d
e
f
STEP 2
ETSH/X(B)16P30+50EF
Daikin Altherma 3 H HT ECH₂O
4P679468-1 – 2022.02
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