Mitsubishi Electric PAC-IF051B-E Installation Manual page 59

. Multiple outdoor units control
System 4: Heating/Cooling system (with Boiler)
• Install a mixing tank (field supply) for connection of the boiler.
• Install a low loss header (field supply).
• Install booster heater between low loss header and mixing tank.
• For more details, refer to the installation manual of PAC-TH011HT-E.
14
15
13 12
Outdoor unit
16
19
20
18 17
Outdoor unit
21
No. Component
1 Booster heater (field supply)
2 Circulation pump1 (field supply)
3 Flow switch1 (field supply) *2
4 Circulation pump2 (field supply)
5 Flow switch2 (field supply) *2
6 Flow temp. thermistor (THW1)
7 Return temp. thermistor (THW2)
8 Flow temp. thermistor (THW6) (option)
9 Return temp. thermistor (THW7) (option)
10 Boiler flow temp. thermistor (THWB1) (option)
*1 When the outdoor unit is split type, TH2 needs to be installed. <Fig. 9.2.1>
*2 For safety protection, it is recommended to instal a flow switch.
System 5: Heating/Cooling system (with Hydrobox)
• Install a low loss header (field supply).
• Install booster heater toward the local system, relative to the low loss header.
Hydrobox
Outdoor unit
Hydrobox
Outdoor unit
Boiler
1 6 2
7
3
Low loss header
(field supply)
<Fig. .2.5>
Wiring
Master Slave 1 Slave 2
4
Heating/
1 2
Cooling
5
3
Low loss header
(field supply)
<Fig. .2.>
10
8
4
Heating/Cooling
11
9
5
Mixing tank
(field supply)
No. Component
11 Boiler return temp. thermistor (THWB2) (option)
12 Slave1 circulation pump1 (field supply)
13 Slave1 flow switch (field supply) *2
14 Slave1 flow temp. thermistor (THW1)
15 Slave1 return temp. thermistor (THW2)
16 Slave1 ref. liquid temp. thermistor (TH2) *1
17 Slave2 circulation pump1 (field supply)
18 Slave2 flow switch (field supply) *2
19 Slave2 flow temp. thermistor (THW1)
20 Slave2 return temp. thermistor (THW2)
21 Slave2 ref. liquid temp. thermistor (TH2) *1
No. Component
1 Booster heater(field supply)
2 Circulation pump1 (field supply)
3 Flow switch1 (field supply) *2
4 Flow temp. thermistor (THW1)
5 Return temp. thermistor (THW2)
*2 For safety protection, it is recommended to instal a flow switch.
Wiring
Master Slave 1 Slave 2
Wiring
Slave 1 Slave 2
Master
(Hydrobox) (Hydrobox)
5