Local System - Mitsubishi Electric EHSE-YM9EC Service Manual

Hydrobox
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Local system

1-zone temperature control
2-zone temperature control
7
2
2-zone temperature control with boiler
13
14
15
2
1. Z one1 heat emitters (e.g. radiator, fan coil unit) (local supply)
2. Mixing tank (local supply)
3. Zone1 flow water temp. thermistor (THW6)
4. Zone1 return water temp. thermistor (THW7)
5. Zone1 water circulation pump (local supply)
6. Zone1 flow switch (local supply) *
7. Motorized mixing valve (local supply)
8. Zone2 flow water temp. thermistor (THW8)
9. Zone2 return water temp. thermistor (THW9)
* Flow switch specifications: 12 V DC/1 mA / Both normally-open and normally-closed types can be used. (Set DIP switch 3 to select the logics. Refer to "6-5. DIP switch setting".)
OCH590B
Zone1
Zone1
3
5
4
11
6
1
Zone2
11
10
8
11
9
12
Zone1
3
5
4
6
1
Zone2
7
10
8
11
9
12
Optional part :
PAC-TH011-E
Optional part :
PAC-TH011-E
3
4
1
2
1-zone temperature control with boiler
13
14
2
1-zone temperature control (2-zone valve ON/OFF control)
18
10. Zone2 water circulation pump (local supply)
11. Zone2 flow switch (local supply) *
12. Z one2 heat emitters (e.g. underfloor heating) (local supply)
13. Boiler flow water temp. thermistor (THWB1)
14. Boiler return water temp. thermistor (THWB2)
15. Boiler (local supply)
16. Zone1 2-way valve (local supply)
17. Zone2 2-way valve (local supply)
18. Bypass valve (local supply)
19
Zone1
5
6
Zone1
15
3
5
4
6
Zone1
16
Zone2
17
Optional part :
PAC-TH011HT-E
1
1

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