To Connect The Backup Heater To The Main Unit - Daikin ETSX16P30EF Installer's Reference Manual

9.3.4 To connect the backup heater to the main unit

EPRA14~18DAV3+W1 + ETSH/X(B)16P30+50EF
Daikin Altherma 3 H HT ECH₂O
4P679467-1A – 2022.07
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
"7.2.6 To open the indoor
9 Electrical installation
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3
4
3 5
I
4 6
L3 N
4
unit" [ 73]):
Installer reference guide
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3
2
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