6 Electrical installation
Installation manual
20
ETSH/X(B)16P30+50E
Daikin Altherma 3 H HT ECH
₂
O
4P679468-1B – 2022.09
X6M
SWB2
*3V (3V: 1N~ 230 V)
*6V (6V: 1N~ 230 V)
*9W (3N~ 400 V)
1N~, 50 Hz
230 V AC
SWB2
Q1DI
N
L
1
2
3
4
F1B
20A
I
I
X6M
Model (power
supply)
Connections to backup heater power
supply
*3V (3V: 1N~ 230 V)
1N~, 50 Hz
230 V AC
SWB2
Q1DI
N
L
1
2
3
4
F1B
20A
I
I
X6M
Model (power
supply)
Connections to backup heater power
supply
*6V (6V: 1N~ 230 V)
1N~, 50 Hz
230 V AC
SWB2
Q1DI
N
L
X6M
1
2
3
4
F1B
32A
I
I
*9W (3N~ 400 V)
3N~, 50 Hz
400 V AC
SWB2
Q1DI
L1 L2 L3 N
X6M
1
2
3
4
5
6
F1B
20A
I
I
I
F1B
Overcurrent fuse (field supply). Recommended fuse:
tripping class C.
Q1DI
Earth leakage circuit breaker (field supply)
SWB
Switch box
X6M
Terminal (field supply)
6.3.4
To connect the backup heater to the main
unit
Wires: The connection cables are already connected to the
option backup heater EKECBU*.
[9.3]
Backup heater
1
Open the following (see
"4.2.1 To open the indoor unit"
8]):
1
User interface panel
1
3
4
2
2
Switch box
3
Switch box cover
4
Top cover
2
Connect both connection cables from the backup heater
EKECBU* to the appropriate connectors as shown in the
illustration below.
