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12.18 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.
* During pump down mode, fix 2 ways valve in close condition.
* During force mode, open 2 ways valve.
* Recommended Parts : SFA 21/18 (Siemens)
12.19 External OFF/ON Control
Communication circuit between indoor unit and external controller is as per below.
Maximum length of communication cable is 20 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
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
CN-THERMO
PCB
Terminal
Board
1
3
R1
R23
10k
1
2
4
3
PC1
G2
ZD2
MA1Z
G2
5V
12V_4
4
5
Summary of Contents for WH-ADC0916G9E8
Page 34: ...34 4 2 Outdoor Unit Air inlet rear Air inlet side Air inlet side Air outlet Air outlet ...
Page 40: ...40 8 Wiring Connection Diagram 8 1 Indoor Unit RY HT L1 RY HT L2 RY V3 RY V2 RY HT L3 ...
Page 100: ...100 Note Default value refer Location of Control and Component OPERATION ACTUAL ...