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Electrical installation
Installer reference guide
84
EWSAH/X06D
Daikin Altherma 3 WS
4P675764-1 – 2022.04
(b)
Normal operation:
backup heater = maximum 3 kW
Emergency operation:
backup heater = maximum 6 kW
9.1.4 Safety device requirements
Power supply
The power supply must be protected with the required safety devices, i.e. a main
switch, a slow blow fuse on each phase and an earth leakage protector in
accordance with the applicable legislation.
Selection and sizing of the wiring should be done in accordance with the applicable
legislation based on the information mentioned in the table below.
Make sure that a separate power supply circuit is provided for this unit and that all
electrical work is carried out by qualified personnel according to local laws and
regulations and this manual. An insufficient power supply capacity or improper
electrical construction may lead to electric shocks or fire.
For EWSAH/X06(U)DA9W:
Power supply
Minimum circuit ampacity
Recommended fuses
1N~ 50 Hz
230 V
29 A
32 A
3N~ 50 Hz
380-415 V
15.5 A
16 A
9.2 Overview of electrical connections for external and internal
actuators
Item
Description
Power supply
"9.2.1 To connect the main power
Remote outdoor sensor
"9.2.2 To connect the remote outdoor
Shut-off valve
"9.2.3 To connect the shut-off valve"
93].
Electricity meter
"9.2.4 To connect the electricity meters"
Domestic hot water pump
"9.2.5 To connect the domestic hot water
Alarm output
"9.2.6 To connect the alarm output"
Space cooling/heating
operation control
"9.2.7 To connect the space cooling/heating ON/
Changeover to external
heat source control
"9.2.8 To connect the changeover to external
Power consumption digital
inputs
"9.2.9 To connect the power consumption
Safety thermostat
"9.2.10 To connect the safety thermostat
101].
Low pressure switch on
central water loop