English
19
Wiring diagram
Commissioning
Installers shall use checking list for trial operation of water heaters as per the user manual
and make in .
√
□
Electrical wires are fixed securely?
Water drain pipes are connected correctly?
Ground wires are connected securely?
Supply voltage conforms to relevant electric codes?
The control panel works well?
All noises are normal?
The water tank has been connected with dedicated pressure relief valve (TP valve) and
check valve?
Materials for hot/cold water pipes conform to requirements of
use of hot/cold water?
After the water system is completed, the water tank is filled with water? Is there water
drained out of the water outlet of the hot water pipeline?
After the water pipe of the water system is filled, check the wh
ole water pipeline. There
is no leakage?
After the water system is filled with water, is there water flowi
ng out after pressure is
relieved via the automatic safe pressure relief valve?
After the water system is filled with water and after leakage check, all outdoor water
pipelines are applied with heat insulation treatment?
The drain valve, drain pipe and pressure relief valve drain pipe of the water tank have
been connected to the sewage system and the drainage can be carried out well?
Installation introduction
R
S
C
K3
CT1
Blue
MAIN BOARD
FAN
t
t
t
t
K4
K5
L
(
Ｌ
)
(
N
)
L
︳
IN
N
︳
IN
CN9
IN
CN19
CN16
N
Leakage
protection coil
GND
Compressor
capacitor
White
Compressor
Ele
ctr
ic h
ea
tin
g
ele
m
en
t
Blue
Blue
White
Black
Brown
Blue
O
ve
r-te
m
pe
ra
tu
re
th
erm
os
ta
rt
Four-way valve
White
Discharge temperature
sensor
Defrost temperature
sensor
Ambient temperature
sensor
Suction temperature
sensor
t
t
Water tank temperature
sensor
Power cord
D
isp
lay
p
an
el
CN1
EXV
Ele
ctr
on
ic e
xp
an
sio
n v
alv
e
CN5
CN2
H
igh
p
re
ss
ure
sw
itc
h
CN11
CN2
1
CN1
5
CN1
3
CN1
7
CN2
0
CN2
2
Terminal block
Current
transformer
CN24
O
ff-p
ea
k p
ow
er
sw
itc
hing
sig
na
l
CN27
CN28
