Local System; 1-Zone Temperature Control; 2-Zone Temperature Control; 1-Zone Temperature Control With Boiler - Mitsubishi Electric EHSC-VM2B Service Manual

Local system

1-zone temperature control

2-zone temperature control

2

1-zone temperature control with boiler

13
14
15
3
5
4
2
6
1. Zone1 heat emitters (e.g. radiator, fan coil unit) (fi eld supply)
2. Mixing tank (fi eld supply)
3. Zone1 fl ow water temp. thermistor (THW6)
4. Zone1 return water temp. thermistor (THW7)
5. Zone1 water circulation pump (fi eld supply)
6. Zone1 fl ow switch (fi eld supply) *
7. Motorized mixing valve (fi eld supply)
8. Zone2 fl ow water temp. thermistor (THW8)
9. Zone2 return water temp. thermistor (THW9)
10. Zone2 water circulation pump (fi eld supply)
11. Zone2 fl ow switch (fi eld supply) *
12. Zone2 heat emitters (e.g. underfl oor heating) (fi eld supply)
13. Boiler fl ow water temp. thermistor (THWB1)
14. Boiler return water temp. thermistor (THWB2)
15. Boiler
* Flow switch specifi cations: DC13 V / 0.1 mA / Both normally-open and normally-closed types can be used. (Set Dip switch 3 to select the logics. Refer to
" 6-11. Dip switch setting".)
Note
• Two different fl ow temperatures are NOT available in Cooing mode. The fl ow temperature for Zone2 during Cooling mode is controlled to be the same
temperature as that for Zone1.
• The water circuit for Zone2 can be closed during Cooling mode using dip switch 3-4.
OCH532A
Zone1
1
Zone1
3
5
4
6
1
Zone2
8
9
12
Zone1
Optional part : PAC-TH011-E
Optional part : PAC-TH011-E
Optional part : PAC-TH011HT-E
3
4
2
2-zone temperature control with boiler
13
14
1
2
29
Zone1
5
6
15
Zone1
3
5
4
6
Zone2
7
10
8
9
11
1
1
12