Vaillant ecoFIT pure Series - Setting the Bypass Valve

32 Installation and maintenance instructions ecoFIT pure 0020230533_06
0
50
100
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300
350
0 200 400 600 800 1000
A
B
1
2
A Remaining feed head
[mbar]
B Flow rate [l/h]
1 Max. PWM
2 Min. PWM
15s:
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100
150
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250
300
350
0 200 400 600 800 1000 1200
A
B
1
2
A Remaining feed head
[mbar]
B Flow rate [l/h]
1 Max. PWM
2 Min. PWM
18s:
0
50
100
150
200
250
300
350
0 200 400 600 800 1000 1200
A
B
1
2
A Remaining feed head
[mbar]
B Flow rate [l/h]
1 Max. PWM
2 Min. PWM
25s:
0
50
100
150
200
250
300
350
400
450
0 200 400 600 800 1000 1200
A
B
1
2
A Remaining feed head
[mbar]
B Flow rate [l/h]
1 Max. PWM
2 Min. PWM
30s:
0
50
100
150
200
250
300
350
400
0 500 1000 1400
A
B
1
2
A Remaining feed head
[mbar]
B Flow rate [l/h]
1 Max. PWM
2 Min. PWM
10.3 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 parameter
d.14.
1. Remove the front casing. (
→ Page 18)
1
2. Regulate the pressure using the adjusting screw (1).