28
8.2 - NPSH (Net Positive Suction Head) required ;
Hydronic module option
Design hydronic circuit in order to guarantee that NPSH
(Net Positive Suction Head) is higher or equal to required
NPSH + 50 kPa.
Low pressure pumps (options 116T/116U)
0
10
20
30
40
50
60
70
80
90
100
0
5
10
15
20
25
30
35
40
Re
qu
ire
d
N
PS
H [
k
Pa ab
s ]
Flow rate [L/s]
Low pressure pumps (options 116T/116U)
Requir
ed
NP
SH
[
kP
a
abs
Flow rate [L/s]
High pressure pumps (options 116R/116S)
0
20
40
60
80
100
120
0
5
10
15
20
25
30
35
40
Re
qu
ire
d
N
PS
H [
k
Pa ab
s ]
Flow rate [L/s]
High pressure pumps (options 116R/116S)
Requir
ed
NP
SH
[
kP
a
abs
]
Flow rate [L/s]
8.3 - Flow rate and cooling capacity calculations
Units with hydronic module enable direct monitoring of flow
rate and cooling capacity through IHM (refer to 30XAV
control manual).
Fluid pressure is measured by pressure sensors fitted at pump
inlet and unit outlet. The system calculates the flow rate
corresponding to measured differential pressure.
Combined with temperature difference between evaporator
inlet and outlet, this flow rate calculation permits to provide
a monitoring of cooling capacity.
Calculations are only applicable with fresh water. In case of
brine solution (ex: glycol) other than fresh water, flow and
cooling capacity provided won't be accurate.
These data are given for indicative purpose to user and may
vary depending on hydronic circuit fouling and proper
operation of the pump. Carrier does not undertake the
accuracy of this information.
Summary of Contents for AquaForce 30XAV 1050
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