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Installation and maintenance instructions 0020213394_05
10.2.2 Remaining feed head of building circuit
pump
10.2.2.1 Remaining feed head for VWF 5x/4 building
circuit pump at nominal volume flow
0
100
200
300
400
500
600
700
800
40
50
60
70
80
90
100
B
A
1
2
3
1
Air heat source
2
Ground heat source
3
Ground water heat
source
A
Remaining feed head in
hPa (mbar)
B
Pump output in %
10.2.2.2 Remaining feed head for VWF 8x/4 building
circuit pump at nominal volume flow
0
100
200
300
400
500
600
700
800
40
50
60
70
80
90
100
B
A
1
2
3
1
Air heat source
2
Ground heat source
3
Ground water heat
source
A
Remaining feed head in
hPa (mbar)
B
Pump output in %
10.2.2.3 Remaining feed head
for VWF 11x/4 building circuit pump at
nominal volume flow
0
100
200
300
400
500
600
700
800
40
50
60
70
80
90
100
B
A
1
2
3
1
Air heat source
2
Ground heat source
3
Ground water heat
source
A
Remaining feed head in
hPa (mbar)
B
Pump output in %
10.2.2.4 Remaining feed head
for VWF 15x/4 building circuit pump at
nominal volume flow
0
100
200
300
400
500
600
700
800
900
40
50
60
70
80
90
100
B
A
1
2
3
1
Air heat source
2
Ground heat source
3
Ground water heat
source
A
Remaining feed head in
hPa (mbar)
B
Pump output in %
