57
9. 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-TH011HT-E.
No.
Component
Wiring
Master Slave 1 Slave 2
1 Booster heater (local supply)
2 Circulation pump1 (local supply)
3 Flow switch1 (local supply) *2
4 Circulation pump2 (local supply)
5 Flow switch2 (local 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)
No.
Component
Wiring
Master Slave 1 Slave 2
11 Boiler return temp. thermistor (THWB2) (option)
12 Slave1 circulation pump1 (local supply)
13
Slave1 flow switch (local 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 (local supply)
18
Slave2 flow switch (local supply) *2
19
Slave2 flow temp. thermistor (THW1)
20 Slave2 return temp. thermistor (THW2)
21 Slave2 ref. liquid temp. thermistor (TH2) *1
*1 Cooling system is available only with ERS models.
*2 For safety protection, it is recommended to install a flow switch.
No.
Component
Wiring
Master
Slave 1
(Hydrobox)
Slave 2
(Hydrobox)
1 Booster heater(local supply)
2 Circulation pump1 (local supply)
3 Flow switch1 (local supply) *2
4 Flow temp. thermistor (THW1)
5 Return temp. thermistor (THW2)
<Fig. 9.2.6>
*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 install a flow switch.
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
2
1
3
Outdoor unit
Hydrobox
Heating/
Cooling
Outdoor unit
Hydrobox
Low loss header
(local supply)
6
14
15
16
21
7
8
9
10
11
4
5
2
12
1
3
13
19
20
17
18
Outdoor unit
Heating/Cooling
Outdoor unit
Mixing tank
(local supply)
Boiler
Low loss header
(local supply)
<Fig. 9.2.7>
Содержание PAC-SIF051B-E
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