Mitsubishi Electric PAC-IF082B-E - 10.3 Electrical Connection

53
10. Multiple outdoor units control
System 4: Heating/Cooling system (with Boiler)
• Install a mixing tank (local supply) for connection of the boiler.
• Install a low loss header (local supply).
• Install booster heater between low loss header and mixing tank.
• For more details, refer to the installation manual of PAC-TH012HT-E.
No. Component
Wiring
Main Sub 1 Sub 2
1 Booster heater (local supply)
2 Circulation pump 1 (local supply)
3 Flow switch 1 or sensor *2
4 Circulation pump 2 (local supply)
5 Flow switch 2 (local supply) *2
6 Thermistor (Flow water temp.) (THW1)
7 Thermistor (Return water temp.) (THW2)
8 Thermistor (Zone 1 ow water temp.) (THW6) (option)
9 Thermistor (Zone 1 return water temp.) (THW7) (option)
10 Thermistor (Boiler ow water temp.) (THWB1) (option)
No. Component
Wiring
Main Sub 1 Sub 2
11 Sub 1 circulation pump 1 (local supply)
12 Sub 1 ow switch or sensor *2
13 Sub 1 thermistor (Flow water temp.) (THW1)
14 Sub 1 thermistor (Return water temp.) (THW2)
15 Sub 1 thermistor (Ref. liquid temp.) (TH2) *1
16 Sub 2 circulation pump 1 (local supply)
17 Sub 2 ow switch or sensor *2
18 Sub 2 thermistor (Flow water temp.) (THW1)
19 Sub 2 thermistor (Return water temp.) (THW2)
20 Sub 2 thermistor (Ref. liquid temp.) (TH2) *1
*1 Cooling system is available only with ERS or ERP models.
*2 For safety protection, it is recommended to install.
No. Component
Wiring
Main
Sub 1
(Hydrobox)
Sub 2
(Hydrobox)
1 Booster heater (local supply)
2 Circulation pump 1 (local supply)
3 Flow switch 1 or sensor *2
4 Thermistor (Flow water temp.) (THW1)
5 Thermistor (Return water temp.) (THW2)
<Fig. 10.2.6>
*1 When the outdoor unit is split type, TH2 needs to be installed. (Fig. 10.2.1)
*2 For safety protection, it is recommended to install.
System 5: Heating/Cooling system (with Hydrobox)*1
• Install a low loss header (local supply).
• Install booster heater toward the local system, relative to the low loss header.
4
5
21
3
Outdoor unit
Hydrobox
Heating/
Cooling
Outdoor unit
Hydrobox
Low loss header
(local supply)
en
6
13
14
15
20
7
8
9
10
4
5
2
11
1
3
12
18
19
1617
Outdoor unit
Heating/Cooling
Outdoor unit
Mixing tank
(local supply)
Boiler
Low loss header
(local supply)
<Fig. 10.2.7>