Water System Diagram - Mitsubishi Electric EHSC-MEC Service Manual

8

WATER SYSTEM DIAGRAM

<E*S*> (Split model system)
5
4
17
3
19
Flare connections
<Figure 8-1> Water system diagram for Split model
<EHPX> (Packaged model system)
6
5
19 3
26
28
28 26
<Figure 8-2> Water system diagram for Packaged model
No. Part name
1 Control and electrical box
2 Main remote controller
3 Plate heat exchanger (Refrigerant - Water)
4 Water circulation pump 1
5 Pump valve
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
13 Strainer valve
14 Drain pan
15 THW1
16 THW2
17 TH2
18 THW5 (Optional part PAC-TH011TK-E or PAC-TH011TKL-E)
19 Outdoor unit
20 Drain pipe (Local supply)
21 3-way valve (Local supply)
22 DHW indirect unvented tank (Local supply)
23 Cold water inlet pipe (Local supply)
24 DHW outlet pipe (Local supply)
25 Back flow prevention device (Local supply)
26 Isolating valve (Local supply)
27 Magnetic filter (Local supply) (Recommended)
28 Strainer (Local supply)
29 Pressure relief valve (5 bar)
*1 Only E***-*M*CR3.UK model
OCH571D
Hydrobox
29
12
11
7
8
6
16
15
13 10 Pa
9
20
27
Drain
26
21
Water supply
Hydrobox
29
11
12
7
8
16
15
13 10
Pa 9
4
20
27
Drain
26
21
Water supply
EHS*-MEC
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Refrigerant pipe
Water pipe
Cold water
DHW
24
25
23
22
18
Local
system
*1
26
25
Drain
Water pipe
Cold water
DHW
24 25
23
22
18
Local
system
*1
26
25
Drain
EHSD-MC EHS*-*M*C EHSC-*M*EC
-
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
*1 *1
<Table 8-1>
32
Notes:
• Be sure to follow your local regulations to per-
form system configuration of the DHW connec-
tions.
• DHW connections are not included in the hy-
drobox 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 pipe work should be attached to
pressure relief valves, in accordance with local
regulations, with the exception of 5bar PRV
located next to the expansion vessel.
• The outlet for the 5bar PRV should be open
ended and facing the rear panel. Nothing
should be placed below the Hydrobox.
• 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.
* 1 Refer to the following section [Local system].
ERS*-VM2C ERSC-MEC
-
- -
-
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- -
*1
EHPX-*M*C
-
-
-
-
-
-
-
-
-
-
-
-
-
-
*1