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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.
0
10
20
30
40
50
60
70
80
90
100
0 5 10 15 20 25 30 35 40
Required NPSH [ kPa abs ]
Flow rate [L/s]
Low pressure pumps (options 116T/116U)
Low pressure pumps (options 116T/116U)
Required NPSH [ kPa abs
Flow rate [L/s]
0
20
40
60
80
100
120
0 5 10 15 20 25 30 35 40
Required NPSH [ kPa abs ]
Flow rate [L/s]
High pressure pumps (options 116R/116S)
High pressure pumps (options 116R/116S)
Required NPSH [ kPa abs ]
Flow rate [L/s]
Units with hydronic module enable direct monitoring of
ow rate and cooling capacity through IHM (refer to
30XAV-ZE control manual).
Fluid pressure is measured by pressure sensors tted at
pump inlet and unit outlet. The system calculates the ow
rate corresponding to measured differential pressure.
Combined with temperature difference between
evaporator inlet and outlet, this ow 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, ow
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.
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