Mitsubishi Electric EHSD-MEE - Water System Diagram

20
WATER SYSTEM DIAGRAM
8
Note
• Be sure to follow your local regulations to perform system conguration of the DHW connec-
tions.
• 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 backow prevention device must be installed on water supply pipework (IEC 61770).
• When using components made from di󰀨erent metals or connecting pipes made of di󰀨erent
metals insulate the joints to prevent a corrosive reaction taking place which will damage the
pipework.
<Figure 8.1>
<Figure 8.2>
Pa
20
24
27
25
26
27
28
28
7
6
8
9
11
12
13
16
17
23
30
3
21
28
30
30
28
4
15
10
31*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.
No. Part name
ERPX-ME ERPX-*M*E EHSD-MEE EHSD-*M*E ERS*-MEE ERS*-*M*(E)E
1
Control and electrical
box
2 Main remote controller
3
Plate heat exchanger
(Refrigerant - Water)
- -
4 Water circulation pump 1
5 Air vent (manual) - -
6
Drain cock
(Primary circuit)
-
7 Booster heater 1, 2 - - -
8 Flow sensor
9 Manometer
10
Pressure relief valve
(3 bar)
- -
11 Automatic air vent
12 Expansion vessel - -
*
3
13 Magnetic lter
14 Drain pan - -
15
Pressure relief valve
(5 bar)
- -
*3
16 THW1
17 THW2
18 TH2 - -
19 Pressure sensor - -
*4 *4 *4 *4
20
THW5B
(Optional part
PAC-TH011TK2-E or
PAC-TH011TKL2-E)
- - - - - -
21 Outdoor unit - - - - - -
22 Drain pipe (Local supply) - - - - - -
23
3-way valve
(Local supply)
- - - - - -
24
DHW indirect unvented
tank (Local supply)
- - - - - -
25
Cold water inlet pipe
(Local supply)
- - - - - -
26
DHW outlet pipe
(Local supply)
- - - - - -
27
Back ow prevention
device (Local supply)
- - - - - -
28
Isolating valve
(Local supply)
- - - - - -
29
Magnetic lter (Local
supply) (Recommended)
- - - - - -
30 Strainer (Local supply) - - - - - -
31 Air vent (Local supply) - - - - - -
<Table 8.1>
*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 ERSE-YM9EE is not included.
*4 ERSC-*, ERSE-* is not included.
P
20
21
24
27
25
26
27
28
28
3
17
9
10
11
12
13
16
17
21
23
30
4
6
7
8
15
7
8
10
11
16
5
19
<E*S*> (Split model system)
Local
system *1
Refrigerant pipe
Water
supply
DHW
Drain
Drain
Cold
water
Water pipe
Hydrobox
Flare connections
<ERSE only>
OCH815A