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3.3 Electric Connection
CAUTION
The power supply should be an
independent circuit with rated voltage.
Power supply circuit should be earthed
effectively.
The wiring must be performed by
professional technicians in accordance
with national wiring regulations and this
circuit diagram.
An all-pole disconnection device which
has at least 3mm separation distance in all
pole and a residual current device
(RCD)with the rating of above 10mA shall
be incorporated in the fixed wiring
according to the national rule.
Set the electric leakage protector
according to the relevant electric
technical standards of the state.
The power cord and the signal cord shall
be laid out neatly and properly without
mutual interference or contacting the
connection pipe or valve.
After wire connection, check it again and
make sure the correctness before power on.
3.3.1 Electric Wiring Illustration
CODE
NAME
CT1
CURRENT TRANSFOMER
CT2
ZERO SEQUENCE CURRENT TRANSFORMER
RY2/RY4
HEATER L/N RELAY
RT5U
WATER TANK TEMPERATURE SENSOR UPPER
RT5L
WATER TANK TEMPERATURE SENSOR LOWER
DISPLAY
WATER TANK DISPLAY CONTROL UNIT
SG
SMART GRID SIGNAL
EVU
PHOTOVOLTAIC SIGNAL
Y/G
Y/G
3
BR
BL
2
TO OUTDOOR UNIT
ALARM
HEATER POWER SUPPLY
220—240V~50Hz
▲
T5L: Tank Temp. Sensor (lower)
FOR SETTING SG CONTROL
SW2
MODE
SG ON
SG OFF
FACTORY
SETTING
Y/G
2
YW
GY
BK
2
2
SG
EVU
MODBUS
T5U: Tank Temp. Sensor (upper)
When installing the prototype, pay attention
to install the signal cable of the water tank
to the place where the user can't touch it.
3.3.2 Specifications of Power Supply
Model Name
Power Supply
MIin. Diameter of Power
Supply Cord (mm
Earth Cord (mm
Manual Switch(A) Capcity/Fuse(A)
Creepage Breaker
Please choose the power cord according to above table, and
it should comply with local electric standard.
The power cord model, recommanded power cord mode is
H05RN-F.
The unit must be installed with an Creepage
Breaker near the power supply and must be
effectively earthed.
THIS DASHED BOX
REPRESENTS INTERNAL WIRING OF WATER TANK
3
RY4
RY2
BR
4
4
MAIN CONTROL BOARD
BL
2
5
4
2
5
WH
BL
NOTE1:
THIS SYSBOL INDICATES THE ELEMENT IS OPTIONAL,THE ACTUAL SHAPE SHALL BE PREVAIL
NOTE2:
▲
THIS POWER SUPPLY IS INDEPEDENT OF AIR-CONDITIONER POWER
NOTE3:
REMOTE ON/OFF
P—RS485 A; Q—RS485 B; E—RS485 GND; X1—REMOTE ON/OFF SIGNAL; X2—REMOTE ON/OFF GND
Earthing
11
PLSX-190(30)DN8-A
220-240V～ 50Hz
(For water tank with
)
2
)
(For water tank with
2
WARNING
THERMAL BREAKER
THERMAL BREAKER SHEET METAL
4
3
TO WATER TANK SHELL
BR
RD
Y/G
HEATER
BL
BK
2
1
4
4
4
Table.3-2
1.5
electric heating)
1.5
electric heating)
30/20(For DHW)
(Not including)
Y/G
RT5L
RT5U
DISPLAY
Fig.3-11
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