5 Electrical installation
Installation manual
13
ETBH/9W
Daikin Altherma 3 H HT W
4P586453-1C – 2020.10
Model (power
supply)
Connections to backup heater power
supply
*6V (6V: 1N~ 230 V)
1N~, 50 Hz
230 V AC
SWB
4
3
6
5
2
1
K5M
14
13
Q1DI
1
2
3
4
5
6
7
8
F1B
I
I
I
I
N
L
X6M
BRN
GRY
BLU1
BLU2
*6V (6T1: 3~ 230 V)
SWB
3~, 50 Hz
230 V AC
4
3
6
5
2
1
K5M
14
13
1
2
3
4
5
6
7
8
F1B
I
I
I
I
Q1DI
L1 L2 L3
X6M
BRN
GRY
BLU1
BLU2
*9W (3N~ 400 V)
3N~, 50 Hz
400 V AC
SWB
Q1DI
L1 L2 L3 N
1
2
3
4
5
6
7
8
F1B
I
I
I
I
X6M
2
1
K5M
4
3
6
5
14
13
BRN
GRY
BLK
BLU
NOTICE
Do NOT cut or remove the backup heater power supply
cable.
5.3.3
To connect the shut-off valve
INFORMATION
Shut-off valve usage example.
In case of one LWT zone,
and a combination of underfloor heating and heat pump
convectors, install a shut-off valve before the underfloor
heating to prevent condensation on the floor during cooling
operation. For more information, see the installer reference
guide.
Wires: 2×0.75 mm²
Maximum running current: 100 mA
230 V AC supplied by PCB
[2.D]
Shut off valve
1
"3.2.1 To open the indoor unit"
1
Front panel
1
2
3
2
Switch box cover
3
Switch box
2
Connect the valve control cable to the appropriate terminals as
shown in the illustration below.
NOTICE
Wiring is different for a NC (normally closed) valve and a
NO (normally open) valve.
B
C
A
A
B
C
A
A
M2S
NO
NC
C
5 6
X2M
C
21 28
X2M
C
5 6
X2M
C
21 29
X2M
B
X2M
3
Fix the cable with cable ties to the cable tie mountings.
