62
12.2.2 A-class Pump Specification
+
Power for drive
DC280-373V
-
+
Power for control
DC15±10%
Control Signal
DC0V-DC6V
Feedback Speed
(puls signal)
4puls/rotation
-
Pump
66
4
5
3
1
2
VDD
GND
VCC
FG
VSP
Control signal is analog voltage (DC0V-6V) generated by microcomputer PWM port.
Microcomputer can change analog voltage by changing PWM duty.
12.2.3 Water Flow Rate Setting
Set water pump speed to adjust the water flow rate.
Depend on the hyraulic system pressure loss and type, the water flow rate can be adjusted by control panel.
1 Press SERVICE button for 5 seconds.
2 Press
▲
button to enter menu S02 and press SET button.
3 Press SELECT button then press
▲
/
▼
button to change SPEED and press SET to confirm.
4 Press OFF/ON button to quit setting.
0
1013
20
30
40
50
60
WATER FLOW RATE (L/min)
110
100
90
80
70
60
50
40
30
20
10
0
1
2
3
4
5
6
7
E
X
TERNAL STATIC PRESS
URE
(
kPa)
NO
T
APPL
IC
A
B
L
E
R
ANG
E
NO
T
APPL
IC
A
B
L
E
R
ANG
E
Note:
* Before adjust the water flow rate, make sure that the total water volume in the installation is minimum 50 litres for
heating side.
* Please ensure the minimum flow rate is not less than 13l/min and not more than 50l/min.
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