Mitsubishi Electric EHGT17D-YM9ED Service Manual page 15

Local system
1-zone temperature control
2-zone temperature control
11
6
2
2-zone temperature control & Buffer tank control
3
4
12
*1
6
9
2
8
1. Zone1 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. Motorized mixing valve (local supply)
7. Zone2 flow water temp. thermistor (THW8)
8. Zone2 return water temp. thermistor (THW9)
9. Zone2 water circulation pump (local supply)
OCH722A
Zone1
1
Zone1
3
5
4
1
Zone2
9
7
8
10
Zone1
5
1
Zone2
7
10
Optional part : PAC-TH011-E
Optional part : PAC-TH011-E
3
4
2
1-zone temperature control with boiler
11
3
4
2
1-zone temperature control
(2-zone valve ON/OFF control)
16
10. Zone2 heat emitters (e.g. underfloor heating) (local supply)
11. Boiler flow water temp. thermistor (THWB1)
12. Mixing tank thermistor (THW10) *1
13. Boiler (local supply)
14. Zone1 2-way valve (local supply)
15. Zone2 2-way valve (local supply)
16. Bypass valve (local supply)
*1 ONLY Buffer tank control (heating/cooling) applies to "Smart grid ready".
15
Zone1
5
Zone1
13
5
Zone1
14
Zone2
15
Optional part :
PAC-TH012HT(L)-E
1
1
1
10