69
12.16 Three Ways Valve Control
Purpose:
- 3 ways valve is used to change flow direction of hot water from heat pump between heating side and tank side.
Control contents:
1 3 ways valve switch Off:
o
During 3 ways valve switch Off time, the hot water will provide heat capacity to heating side.
2 3 ways valve switch On:
o
During 3 ways valve switch On time, the hot water will provide heat capacity to tank side.
3 Stop
condition:
o
During stop mode, 3 ways valve will be in switch off position.
* During pump down and force mode, fix 3 ways valve in close condition.
* Recommended Parts : SFA 21/18 (Siemens)
12.17 External OFF/ON Control
Communication circuit between Mono Bloc 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
5
4
M
L
6
N1
5
N2
COM
Open
Close
4
6: Terminal Board No.
M
L
NC
6
N1
5
N2
4
M
L
NO
6
N1
5
N2
4
6
AC230V
External
Controller
Panasonic
PCB
CN-THERMO
17
18
5V
12V_4
R25
1k
R23
10k
R1
1
4
2
3
ZD2
PC1
G2 G2
C30
0.01µ
16V
Содержание WH-MHF09G3E5
Страница 32: ...32 10 1 2 Solar Printed Circuit Board Optional ACL PUMP L PUMP N CN SOLAR_B ACL1 3V ACL2 3V ACN 3V ACN ...
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