To Connect The Backup Heater To The Main Unit - Daikin ERGA04EAV37 Installer's Reference Manual

9 | Electrical installation

9.3.4 To connect the backup heater to the main unit

Installer reference guide
130
Model (power supply)
*6V (6V: 1N~ 230 V)
*9W (3N~ 400 V)
F1B Overcurrent fuse (field supply). Recommended fuse: tripping class C.
Q1DI Earth leakage circuit breaker (field supply)
SWB Switch box
X6M Terminal (field supply)
Wires: The connection cables are already connected to the option backup
heater EKECBU*.
[9.3] Backup heater
1 Open the following (see
1 User interface panel
2 Switch box
3 Switch box cover
4 Top cover
Connections to backup heater power supply
X6M
SWB2
F1B
1
32A
I I
2
Q1DI
1N~, 50 Hz
L N
230 V AC
X6M
SWB2
1
F1B
20A
I I
2
Q1DI
3N~, 50 Hz L1 L2
400 V AC
"7.2.4 To open the indoor
ERGA04~08EAV3+V3A+V37 + EHSH/X(B)04+08P30+50EF
3
4
3 5
I
4 6
L3 N
4
unit" [ 78]):
Daikin Altherma 3 R ECH₂O
4P678716-1A – 2022.07
4
3
2
1