Mitsubishi Electric PAC-IF061B-E Installation And Operation Manual page 56

9. Multiple outdoor units control
System 3: 2-zone temperature control
• Install a mixing tank (local supply) for 2-zone temperature control.
• Install a low loss header (local supply).
• Install booster heater toward the local system, relative to the low loss header.
• For details on 2-zone installation, refer to "3.6 Piping diagram for 2-zone tem-
perature control".
17
18
16 15
Outdoor unit
19
22
23
21 20
Outdoor unit
24
No. Component
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 Circulation pump3 (local supply)
7 Flow switch3 (local supply) *2
8 Motorized mixing valve (local supply)
9 Flow temp. thermistor (THW1)
10 Return temp. thermistor (THW2)
11 Zone1 flow temp. thermistor (THW6) (option)
12 Zone1 return temp. thermistor (THW7) (option)
56
9
1 2
10
3
Low loss header
(local supply)
(local supply)
<Fig. 9.2.5>
Wiring
Master Slave 1 Slave 2
Heating/Cooling
11
(Zone 1)
4
12
5
Heating/Cooling
13
8
6
14
7
Mixing tank
No. Component
13 Zone2 flow temp. thermistor (THW8) (option)
14 Zone2 return temp. thermistor (THW9) (option)
15 Slave1 circulation pump1 (local supply)
16 Slave1 flow switch (local supply) *2
17 Slave1 flow temp. thermistor(THW1)
18 Slave1 return temp. thermistor (THW2)
19 Slave1 ref. liquid temp. thermistor (TH2) *1
20 Slave2 circulation pump1 (local supply)
21 Slave2 flow switch (local supply) *2
22 Slave2 flow temp. thermistor (THW1)
23 Slave2 return temp. thermisto r(THW2)
24 Slave2 ref. liquid temp. thermistor (TH2) *1
*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.
(Zone 2)
Master Slave 1 Slave 2
Wiring