Midea MHC-V9W/D2N1 - Connection for Other Components

33
The ground fault circuit interrupter must be a high-speed
type breaker of 30 mA (<0.1 s).
Procedure
Door 2: electrical parts of the hydraulic compartment, backup
heater:XT5（3-phase）/XT4(1-phase)
For remote alarm:
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.
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.
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 2-way valve SV2:
For 3-way value SV1
NOTE: Only a normal closing valve is available for this unit
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.
Port provide the control signal to the load.Two kind of control signal
port:
Type 1:dry connector without voltage.
NOTE
3L2L1L
Wiring size
Voltage
0.75mm
2
0.2A
1
SL1
SL2
2
CONNECT TO SOLAR
PUMP SATATION
220-240VAC INPUT
Wiring size
Voltage Passive signal port
0.2A
0.75mm
2
18
SV2
SV2
N
19
For remote shutdown:
SWITCH SIGNAL INPUT
9 10
M1
M2
For solar energy kit
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.
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:
Control port signal type
Wiring size
Voltage 220~240VAC
0.2A
0.75mm
2
Type 2
Control port signal type
Wiring size
Voltage 220~240VAC
0.2A
0.75mm
2
Type 2
Control port signal type
Type 1 Type 2
4
7 5 3 1
A1
A2
2468
N
15
SOLAR PUMP
CONTROL SIGNAL
OUTPUT
Wiring size
Voltage
220~240VAC
0.2A
0.75mm
2
Type 2Control port signal type