CLIVET WSAN-YMi 21, Руководство по установке, использованию и обслуживанию

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9 ELECTRICAL CONNECTIONS
Connection of the backup heater power supply
Only for models that contain backup heater.
Power circuit and cable requirements
CAUTION
Be sure to use a dedicated power circuit for the backup heater.
Never use a power circuit shared by another appliance.
Use the same dedicated power supply for the unit, backup heater and booster heater (domestic hot water tank).
This power circuit must be protected with the required safety devices according to local laws and regulations.
Select the power cable in accordance with relevant local laws and regulations.
For the maximum running current of the backup heater, refer to the table below.
Door 2: electrical parts of the hydraulic compartment, backup heater: XT5
（
3-phase
）/
XT4(1-phase)
Power supply for electrical heater
NOTE
The ground fault circuit interrupter must be a high-speed type breaker of 30 mA (<0.1 s).
Unit(kW)
Backup heater capacity
3 4.5
Backup heater nomi-
nal voltage
220-240VAC 380-415VAC
Minimum circuit amps
(MCA)
14.3 6.0
Maximum overcurrent
protector(MOP)
20 10
Wiring size(mm
2
) 3.3 2.1
1-phase 3-phase