Mitsubishi Electric ecodan EHPX-VM2D, Service Manual

Page: 19 / 86

19
WATER SYSTEM DIAGRAM
8
P
21
22
25
28
26
27
28
29
29
5
3
19
10
11
12
13
14
17
18
23
24
30
4
7
8
9
16
8
9
11
12
17
6
20
Note
• Be sure to follow your local regulations to perform system configuration of the DHW con -
nections.
• DHW connections are not included in the hydrobox package. All required parts are to be
sourced locally.
• To enable draining of the hydrobox an isolating valve should be positioned on both the inlet
and outlet pipework.
• Be sure to install a strainer on the inlet pipe work to the hydrobox.
• Suitable drain pipework should be attached to the relief valves instructed to be connected
to it in Figure 8.1 and 8.2 in accordance with your country's regulations.
• A backflow prevention device must be installed on water supply pipework (IEC 61770).
• When using components made from different metals or connecting pipes made of different
metals insulate the joints to prevent a corrosive reaction taking place which will damage the
pipework.
No. Part name
EHPX-*M*(E)D ERPX-MD ERPX-*M*D EHS*-MED EHS*-*M*D EHS*-YM9ED ERS*-*M*(E)D ERS*-MED
1 Control and electrical box
2 Main remote controller
3 Plate heat exchanger
(Refrigerant - Water)
- - -
4 Water circulation pump 1
5 Pump valve
6 Air vent (manual)
- - -
7 Drain cock (Primary circuit) -
8 Booster heater 1, 2 - - -
9 Flow sensor
10 Manometer
11 Pressure relief valve (3 bar) -
- -
12 Automatic air vent
13 Expansion vessel
*3
- -
*4
-
14 Strainer valve
15 Drain pan
- - - -
16 Pressure relief valve (5 bar)
*3
- -
*4
-
17 THW1
18 THW2
19 TH2
- - -
20 Pressure sensor - - -
*5 *5 *5 *5 *5
21
THW5B
(Optional part
PAC-TH011TK2-E or
PAC-TH011TKL2-E)
-
- - - - - - -
22 Outdoor unit -
- - - - - - -
23 Drain pipe (Local supply) - - - - - - - -
24
3-way valve (Local supply)
-
- - - - - - -
25 DHW indirect unvented tank
(Local supply)
- - - - - - - -
26
Cold water inlet pipe
(Local supply)
-
- - - - - - -
27 DHW outlet pipe
(Local supply)
- - - - - - - -
28
Back flow prevention device
(Local supply)
-
- - - - - - -
29 Isolating valve
(Local supply)
- - - - - - - -
30
Magnetic filter (Local
supply) (Recommended)
-
- - - - - - -
31 Strainer (Local supply) - - - - - - - -
32 Air vent (Local supply) -
- - - - - - -
<Table 8.1>
<Figure 8.1>
<E*S*> (Split model system)
Local
system *1
Refrigerant flow
Water
supply
DHW
Drain
Drain
Cold
water
Water flow
Hydrobox
Flare connections
<E*SE only>
*1 Refer to the following section [Local system].
*2 If the outdoor unit is higher than the indoor unit, or if there is a
location where air gets trapped in the upper part of the water
pipe, consider adding this part.
*3 EHPX-YM9ED and EHPX-MED are not included.
*4 ERSE-YM9ED is not included.
*5 Only 2HP(E*SD) model.
<Figure 8.2>
Pa
21
25
28
26
27
28
29
29
8
7
5
9
10
12
13
14
17
18
24
31
3 22
29
31
31
29
4
16
11
32 *2
<E*PX> (Packaged model system)
Water
supply
DHW
Drain
Cold
water
Water flow
Hydrobox
Local
system
*1
Note:
Do not attach an
additional pressure
relief valve to the
heating (cooling)
circuit on E*PX
model to keep fire
safety.
OCH712C