Panasonic WH-UD07JE5 - Two Ways Valve Control; External OFF;ON Control

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14.23 Two Ways Valve Control
Functionality of 2 ways valve:
 Use to allow hot water to floor heating panel or block cold water to floor heating panel.
Control contents:
1 When indoor running in heat mode, OPEN the 2 ways valve.
2 When indoor running in cool mode, CLOSE the 2 ways valve.
3 Stop condition:
a. During stop mode, fix 2 ways valve in close condition.
L
N2
Indoor Unit
N1
Spring Return 2 point SPDT 3 wire
3
5
M
L
1
N1
3
N2
COM
Open
Close
5
3: Terminal Board No.
M
L
NC
1
N1
3
N2
5
M
L
NO
1
N1
3
N2
5
1
AC230V
* During pump down mode, fix 2 ways valve in close condition.
* During force mode, open 2 ways valve.
* Recommended Parts : SFA 21/18 (Siemens)
14.24 External OFF/ON Control
 Communication circuit between indoor unit and external controller is as per below.
External
Controller
Panasonic
PCB
CN-THERMO
5V
12V
1
2
mico
 Maximum length of communication cable is 50 meter.
 Control content:
External Control Switch Control Panel OFF/ON Control Panel Power LED System Status
ON ON ON ON
ON OFF OFF OFF
OFF ON ON OFF
OFF OFF OFF OFF