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Door 2: electrical parts of the hydraulic compartment, backup
heater:XT5（3-phase）/XT4(1-phase)
L
N
X
T
4
POWER SUPPLY FOR
ELECTRIC HEATER
NOTE
The ground fault circuit interrupter must be a high-speed
type breaker of 30 mA (<0.1 s).
9.6.6 Connection for other components
Port provide the control signal to the load.Two kind of control signal
port:
Type 1:dry connector without voltage.
Type 2: Port provide the signal with 220V voltage. If the current of
load is <0.2A, load can connect to the port directly.
If the current of load is >=0.2A, the AC connector is required to
connected for the load.
25
26
R1
R2
Load
FUSE
Running
Type 1
Control signal port of hydraulic part : The XT7 contains terminals
for solar energy, remote alarm, 2-way valve, 3-way valve, pump,
booster heater and external heating source, etc.
The parts wiring is illustrated below:
For solar energy kit
1
2
SL1 SL2
Voltage
CONNECT TO SOLAR
Maximum running current
PUMP SATATION
Wiring size
220-240VAC INPUT
22
23
Voltage
P_s N
Maximum running current
Wiring size
SOLAR PUMP
CONTROL SIGNAL
Control port signal type
OUTPUT
X
5 T
1 L
2 L
3 L
POWER SUPPLY FOR
ELECTRIC HEATER
Power supply
4
15
N
TBH
7
5 3
1
A1
A2
8
6
4
2
Contactor
Type 2
220-240VAC
0.2A
0.75mm
2
220~240VAC
0.2A
0.75mm
2
Type 2
For remote alarm:
REMOTE ALARM
12
Voltage
24
Maximum running current
Wiring size
FUSE
Control port signal type
REMOTE ALARM
Procedure
1. Connect the cable to the appropriate terminals as shown on the
diagram.
2. Fix the cable with cable ties to the cable tie mountings to ensure
stress relief.
For 2-way valve SV2:
18
19
N
SV2
Voltage
Maximum running current
Wiring size
Control port signal type
SV2
NOTE: Only a normal closing valve is available for this unit
Procedures
1. Connect the valve cable to the appropriate terminals as shown
in the picture
2. Fix the cable with cable ties to the cable tie mountings to ensure
stress relief
For 3-way value SV1
6
7
6
7
ON OFF
ON OFF
21
21
N
N
SV1
SV1
Method 1
Method 2
Voltage
Maximum running current
Wiring size
Control port signal type
Procedure
1. Connect the cable to the appropriate terminals as shown in the
picture
2. Fix the cable with cable ties to the cable tie mountings to ensure
stress relief.
For remote shutdown:
SWITCH SIGNAL INPUT
9
CLOSE:SHUT DOWN
33
Passive signal port
0.2A
0.75mm
Type 1
220~240VAC
0.2A
0.75mm
Type 2
NOTE: Wiring of the 3-way
valve is different for NC(normal
close) and NO (normal open).
Before wiring, read the Installation
& Owner's manual for the 3-way
valve carefully and install the valve
as showed in the picture. Make
sure to connect it to the correct
terminal numbers.
220~240VAC
0.2A
0.75mm
2
Type 2
10
M1
M2
V.2
2
2
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