Water System Diagram - Mitsubishi Electric EHGT17D-YM9ED Service Manual

7

WATER SYSTEM DIAGRAM

Circuit diagram
• Refer to <Table 3.1> for the part names.
31
31
Indoor
35
24
Pa
21
42
Outdoor
45
Bore hole
Note
• To enable draining of the heat pump unit an isolating valve should be positioned on both the inlet and outlet pipework.
• Be sure to install a strainer on the inlet pipework to the heat pump unit.
• Suitable drain pipework should be attached to all relief valves in accordance with your country's regulations.
• A backflow prevention device must be installed on the cold water supply pipework (IEC 61770)
• When using components made from different metals or connecting pipes made of different metals insulate the joints to prevent any corrosive reaction taking
place which may damage the pipework.
Model name
Maximum supply pressure to the pressure reducing valve
Operating pressure (Potable side)
Expansion vessel charge setting pressure (Potable side)
Expansion valve setting pressure (Potable side)
Immersion heater specification (Potable side) *
DHW tank capacity
Mass of the unit when full
Maximum primary working pressure
* EN60335/Type 1000W single phase 230V 50Hz, length 460 mm.
Use only Mitsubishi Electric service parts as a direct replacement.
OCH722A
Cold
water
10
8
Pa
19
18
17
6
25
4
12
39
TH33
48
46
44
47
40
49
<Figure 7.1>
DHW
32
22
9
27
16
28
20
23
Heat
5
sink
43
14
26 7
15 13
37 37 39
41
36 50
3
29
38
*1 Refer to the following section [Local system].
EHGT17D-YM9ED
16 bar
3.5 bar
3.5 bar
6.0 bar
1000 W, 230 V
170 L
360 kg
2.5 bar
14
11
33
34
32
Water Drain
supply
Local
system *1
33