Water Circuit Diagram; Water System Diagram - Mitsubishi Electric EHSE-YM9EC Service Manual

8

WATER SYSTEM DIAGRAM

Water circuit diagram

1
* Refer to the following section [Local system].
<EHS*> (Heating system)
<ERS*> (Heating and cooling system)
4
16
3
18
Flare connections
No. Part name
1 Control and electrical box
2 Main remote controller
3 Plate heat exchanger (Refrigerant - Water)
4 Water circulation pump
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 Strainer valve
13 Drain pan
14 THW1
15 THW2
16 TH2
THW5
17
(Optional part PAC-TH011TK-E or PAC-TH011TKL-E)
18 Outdoor unit
19 Drain pipe (Local supply)
20 3-way valve (Local supply)
21 DHW indirect unvented tank (Local supply)
22 Cold water inlet pipe (Local supply)
23 DHW outlet pipe (Local supply)
24 Back flow prevention device (Local supply)
25 Isolating valve (Local supply)
26 Magnetic filter (Local supply) (Recommended)
27 Strainer (Local supply)
OCH590B
Hydrobox
11
5
7
8
6
15
12 10
Pa
14
9
19
26
Drain
25
20
<Figure 8-1>
EHSE-YM9EC
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<Table 8-1>
Refrigerant pipe
Water pipe
Cold
DHW
water
23
Notes:
24
• Be sure to follow your local regulations to perform
22
21
• DHW connections are not included in the hydrobox
17
• To enable draining of the hydrobox an isolating
• Be sure to install a strainer on the inlet pipe work to
Local
system
• Suitable drain pipework should be attached to all
*1
25
• A backflow prevention device must be installed on
24
• When using components made from different met-
Water Drain
supply
EHSE-MEC ERSE-YM9EC
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18
system configuration of the DHW connections.
package. All required parts are to be sourced lo-
cally.
valve should be positioned on both the inlet and
outlet pipework.
the hydrobox.
relief valves in accordance with your country's
regulations.
water supply pipework (IEC 61770).
als or connecting pipes made of different metals
insulate the joints to prevent a corrosive reaction
taking place which will damage the pipework.
ERSE-MEC
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