8
221129A
AVAILABLE PUMP HEAD
SYSTEM DIFFERENTIAL TEMPERATURE
SYSTEM HEATING LOAD
*
0
5
10
15
17
20
11
40
35
30.6
25
19.8
15
10
5
0
F
0
C
0
0
15
30
40
50
60
0
1
2
3
5
10
16
14
4
10
12
5
FEET
4.5
4.0
3.5
3.0
2.5
5.0
GALLONS/Min
LITRES/Min
FLOW RATE
18
17
15
13
11
19
20
22
23
Btu/h x
1000
kW
21
ACCEPTABLE
DIFFERENTIAL
RANGE
*
PUMP
CURVE
- SETT
ING 3
PUMP
CURVE
- SETT
ING 2
REMAINING CONVEYING CAPACITY OF PUMP
SHOWING RELATIVE SYSTEM DIFFERENTIAL AT
VARIOUS SYSTEM HEATING LOADS.
M
4 H e a t i n g S y s t e m
Diagram 4.1
Diagram 4.1A
5947
5948
GRUNDFOS
WILO
AVAILABLE PUMP HEAD
SYSTEM DIFFERENTIAL TEMPERATURE
SYSTEM HEATING LOAD
*
0
5
10
15
17
20
11
40
35
30.6
25
19.8
15
10
5
0
F
0
C
0
0
15
30
40
50
60
0
1
2
3
5
10
16
14
4
10
12
5
FEET
4.5
4.0
3.5
3.0
2.5
5.0
GALLONS/Min
LITRES/Min
FLOW RATE
18
17
15
13
11
19
20
22
23
21
ACCEPTABLE
DIFFERENTIAL
RANGE
*
PUMP
CURVE
- SETT
ING 2
/ WILO
SETTIN
G
REMAINING CONVEYING CAPACITY OF PUMP
SHOWING RELATIVE SYSTEM DIFFERENTIAL AT
VARIOUS SYSTEM HEATING LOADS.
M
- Setting 2
- Setting 1
PUMP
CURV
E -
SETT
ING
1 / W
ILO
SETT
ING
Btu/h x
1000
kW
