M thermal Mono
10
202005
Midea M
ther
ma
l
Mo
no
Engineer
ing
Da
ta Boo
k
5.2
Space Heating and DHW with solar system
Space heating without room thermostat connected to the unit. Domestic hot water tank is connected to the unit, and the
tank is with solar heating system. Solar water pump is controlled by Tsolar temperature sensor. Balance tank temperature
sensor is used to control on/off of heat pump. Once the heat pump stops, internal pump stops to save energy and then
balance tank provides hot water for space heating. In addition, balance tank temperature control can meet both space
heating and domestic hot water needs at the same time.
Figure 1-5.2: Space heating and DHW with solar system
Table 1-5.2: Space heating and DHW with solar system
Legend
1
Outdoor unit
8.2
Drain valve
1.1
Manometer
9
Expansion vessel (field supplied)
1.2
Pressure relief valve
10
P_o: Outside circulation pump (field supplied)
1.3
Expansion vessel
11
Collector / Distributor (field supplied)
1.4
Plate heat exchanger
12
Domestic hot water tank (field supplied)
1.5
Air purge valve
12.1
Air purge valve
1.6
Flow switch
12.2
Heat exchanger coil
1.7
P_i: Circulation pump inside the unit
12.3
Booster heater
2
Y-shape filter
13
T5: Temperature sensor
3
Stop valve (field supplied)
14
Hot water tap(field supplied)
4
Wired controller
15
P_d: Cycle hot water pump (field supplied)
5
SV1: 3-way valve (field supplied)
16
One way valve(field supplied)
6
Drain valve (field supplied)
17
Bypass valve(field supplied)
7
Fill valve (field supplied)
18
Solar heater(field supplied)
8
Balance tank (field supplied)
19
P_s: Solar pump(field supplied)
8.1
Air purge valve
FHL 1...n
Floor heating loop (field supplied)
Notes:
1.
The example is just for application illustration; please confirm the exact installation method according to the installation manual.
Midea CAC Confidential
