40
Installation and maintenance instructions 0020244997_07
10.3
Setting the pump output
1.
Navigate to
Menu
→
Installer level
→
Diagnostics
menu
→
D.014 Pump speed target value
and confirm
by pressing
.
2.
Set the required pump output.
Condition
: Low loss header installed
▶
Switch off the speed regulation and set the pump output
to a fixed value.
10.3.1 Remaining feed head of the pump
10.3.1.1 Pump characteristic line for VU 126, VU 156,
VU 186
400
300
200
100
0
0
200 400 600 800 1000 1200
1600 1800
1400
Flow rate [l/hr]
Remaining feed head
[hPa]
100% PWM
85%
70%
60%
53%
10.3.1.2 Pump characteristic line for VU 246, VUW
196, VUW 256
0
400
300
200
100
0
50
150
250
350
200 400 600 800 1000 1200 1400
Remaining feed head
[hPa]
Flow rate [l/hr]
100% PWM
80%
70%
60%
53%
10.3.1.3 Pump characteristic line for VU 306, VUW
306, VUW 356
400
300
200
100
0
0
200 400 600 800 1000 1200
1600 1800
1400
Flow rate [l/hr]
Remaining feed head
[hPa]
100% PWM
85%
70%
60%
53%
10.3.1.4 Pump characteristic line for VUW 246, VUW
326
400
300
200
100
0
0
200 400 600 800 1000 1200
1600 1800
1400
Remaining feed head
[hPa]
Flow rate [l/hr]
100% PWM
85%
70%
60%
53%
10.3.1.5 Pump characteristic line for VU 376, VU 386,
VUW 286, VUW 386
400
300
200
100
0
0
200 400 600 800 1000 1200
1600 1800
1400
Remaining feed head
[hPa]
Flow rate [l/hr]
Minimum
with Auto
100% PWM
85%
70%
60%
53%
10.4
Setting the bypass valve
Caution.
Risk of material damage caused by incor-
rect setting of the high-efficiency pump
If the pressure at the bypass valve is in-
creased (by turning it clockwise) and the
pump output is set to less than 100%, the
product may not operate correctly.
▶
In this case, set the pump output to
5 = 100% using diagnostics code D.014.
▶
Remove the front casing. (
1
▶
Regulate the pressure using the adjusting screw
(1)
.
