Local System; 1-Zone Temperature Control; 2-Zone Temperature Control; 1-Zone Temperature Control With Boiler - Mitsubishi Electric EHST17D-VM2D Service Manual

Local system

1-zone temperature control

2-zone temperature control

6
2
2-zone temperature control & Buffer tank control
12
*1
6
2
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)
OCH714A
Zone1
Zone1
3
5
4
1
Zone2
9
7
8
10
Zone1
3
5
4
1
Zone2
9
7
8
10
Optional part : PAC-TH011-E
Optional part : PAC-TH011-E
3
1
2

1-zone temperature control with boiler

11
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".
25
Zone1
5
4
13
Zone1
3
5
4
Zone1
14
Zone2
15
Optional part : PAC-TH012HT(L)-E
1
1
1
10