Panasonic WH-MHF09G3E8, Service Manual

Page: 62 / 140

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.