Midea MHC-V10W/D2N1, Installation & Owner'S Manual, Page: 19 / 96

17
1 outdoor unit
1.1 manometer
1.2 pressure relif valve
1.3 expansion vessel
1.4 plate heat exchanger
1.5 backup heater
1.6 air purge valve
1.7 flow switch
1.8 P_i: circulate pump in the unit
2 y-shape filter
3 stop valve(field supply) 4 user interface
6 drain valve(field supply)
7 fill valve(field supply)
8 buffer tank(field supply)
9 balance tank(field supply)
9.1 air purge valve
9.2 drain valve
10 expansion vessel(field supply)
11 P_o: outside circulate pump(field supply)
12 collector(field supply)
13 domestic hot water tank(optional) 13.1 booster heater
13.2 heat exchanger coil
13.3 air purge valve
14 T5:temperature sensor
15 hot water tap(field supply)
16 P_d: DHW pump(field supply)
17 non-return valve(field supply)
18 bypass valve(field supply)
19 SV1: 3-way valve(field supply)
FHL 1...n floor heating loop
27 Solar energy kit(field supply)
28 P_s: Solar pump(field supply)
The pump (1.8) and (11 will operate when there is a request for heating floor heating loops. The outdoor unit will start operating to achieve the
target water flow temperature. The target water can be set in the user interface.
if solar energy is set avaliable in the user interface(refer to
10.7 Field settings/OTHER HEATING SOURCE ), the heating of domestic hot water
can be done by either the solar energy kit or heat pump. when the solar energy kit turns on, signal will sent to the outdoor unit, then the pump
(28) will operate, the heat pump will stop heating for domestic hot water during solar energy kit operation .
Make sure to wiring the solar energy kit(27) and solar pump(28) correctly, refer to “ 9.6.6 Connection for other components/For solar energy
kit ”. User interface should be correctly configured, refer to “ 10.7 Field settings/OTHER HEATING SOURCE ”.
NOTE
NOTE
If the volume of balance tank(9) is larger than 30L, the buffer tank(8) is unnecessary, otherwise the buffer tank(8) should be installed and the total
volume of balance tank and buffer tank should larger than 30L.The drain valve (6) should be installed at the lowest positon of the system. For
the 5/7/9kW unit, the backup heater (1.5) is not integrated in the outdoor unit. An independent backup heater can be selected and installed in the door.
1
3 2
8.8 Application 8
Space heating application and domestic hot water heating with a solar energy kit connect to the system, space heating is provided by heat
pump, domestic hot water heating is provided by heat pump and solar energy kit.
13.3
13.3
FHL1 FHL2 FHLn
16
14
13.1
13
17
17
15
13.2
11
10
12
4
6
7
8
9
18
19
SP
27
28