11
3.3.2 Specifications of Power Supply
3.3.1 Electric Wiring Illustration
T5U: Tank Temp. Sensor (upper)
T5L: Tank Temp. Sensor (lower)
Earthing
WARNING
The unit must be installed with an Creepage
Breaker near the power supply and must be
effectively earthed.
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.
CAUTION
3.3 Electric Connection
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.
30/20(For DHW)
(Not including)
Creepage Breaker
Earth Cord
(mm
2
)
Manual Switch(A) Capcity/Fuse
(
A
)
Model Name
Power Supply
Min. Diameter of Power
Supply Cord
(mm
2
)
220-240V
～
50Hz
KTHR-190
1.5
(For water tank with
electric heating)
1.5
(For water tank with
electric heating)
After wire connection, check it again and
make sure the correctness before power on.
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.
HN
HL
Q
P
E X1 X2
CN31
CN53
CN24
CN18
CN38
CN2
1
2
3
4
N
L
S
WATER TANK TEMPERATURE SENSOR UPPER
WATER TANK TEMPERATURE SENSOR LOWER
HEATER
BL
BK
BR
RD
THERMAL BREAKER
THIS DASHED BOX
REPRESENTS INTERNAL WIRING OF WATER TANK
CURRENT TRANSFOMER
ZERO SEQUENCE CURRENT TRANSFORMER
HEATER L/N RELAY
RY2/RY4
CT1
CT2
TO OUTDOOR UNIT
DISPLAY
CODE
NAME
RY4
RY2
CN21
CN16
BR
BL
BR
YW GY BK
BL
WH
Y/G
Y/G
Y/G
Y/G
Y/G
MAIN CONTROL BOARD
THERMAL BREAKER SHEET METAL
TO WATER TANK SHELL
NOTE1:
THIS SYMBOL INDICATES THE ELEMENT IS OPTIONAL,THE ACTUAL SHAPE SHALL BE PREVAIL
BL BK
BL
BR
HEATER POWER SUPPLY
220—240V~50Hz
MODBUS
REMOTE ON/OFF
SG
EVU
ALARM
RT5U
RT5L
DISPLAY
SG
EVU
WATER TANK DISPLAY CONTROL UNIT
SMART GRID SIGNAL
NOTE2:
THIS POWER SUPPLY IS INDEPENDENT OF AIR-CONDITIONER POWER
▲
▲
RT5L
RT5U
PHOTOVOLTAIC SIGNAL
3
3
2
2
5
5
4
4
4
4
4
4
NOTE3:
P—RS485 A; Q—RS485 B; E—RS485 GND; X1—REMOTE ON/OFF SIGNAL; X2—REMOTE ON/OFF GND
2
2
2
2
CN27
CN23
FOR SETTING SG CONTROL
SW2
MODE
FACTORY
SETTING
SG ON SG OFF