Hokkaido HWMI 150 A, Инструкция по установке и эксплуатации

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WIRING
Please choose the power cable according to the
above table and according to local electric standard.
ELECTRIC CONNECTION 6.
For safety, a Creepage Breaker must be installed
on the Unit near the power supply.
Moreover, the Unit must be effectively earthed
(see Fig. 6-1).
•
•
•
•
•
•
The power supply for the Unit must correspond to the
rated voltage.
Earthing must be included in the power circuit. And
it must be connected with the effective external ground
wire.
The wiring must be performed by Authorized Technicians
according to the circuit diagram.
Set the electric leakage protector according to the
current electric technical standards.
The power cord and the signal cord must be properly
laid out, without mutual interference or contacting
the connection pipe or valve.
After wire connection is finished, check it again and
make sure the correctness before supplying power.
CAUTION
WARNING
6.1 Specifications of Power Supply
Table 6-1
Fig. 6-1
6.2 Electric leakage protector
E
Power Cable with
Creepage Breaker
Creepage Protector
Plug/Socket
Power Supply
Check the voltage between L and N of powerline
with MULTIMETER: you will get a data (V1).
Also check the voltage between L and E of powerline
with MULTIMETER: you will get second data (V2).
If V1 - V2 ≤ 5V, the earthing could be viewed as
reliable.
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•
If V1 - V2 > 5V, the earthing is not reliable, and
needs to be checked first.
•
If V1 - V2 = 0V, means no earthing connection in
the power supply. It is necessary to settle it before
installing the Water Heater.
(Other method of reliable earthing check is also
recommended, such as usage of MEGOHMMETER).
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•
Check Method of Reliable Earthing
15/10
Length > 5m
Length ≤ 5m
Model Name
Power Supply
Earth wire (mm
2
)
Creepage Breaker
Manual Switch(A)/Fuse
Min. Diameter of
Power Supply Line
(mm
2
)
HWMI 150A, 190A
220-240V~50Hz
1.5/3-core
2.5/3-core
2.0
30 mA ≤ 0.1sec