Npsh (Net Positive Suction Head) Required ; Hydronic Module Option; Flow Rate And Cooling Capacity Calculations - Carrier AquaForce 30XAV 500 Installation, Operation And Maintenance Instructions

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.
100
90
80
70
60
50
40
30
20
10
0
0
120
100
80
60
40
20
0
0

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.
28
Low pressure pumps (options 116T/116U)
Low pressure pumps (options 116T/116U)
5 10 15
High pressure pumps (options 116R/116S)
High pressure pumps (options 116R/116S)
5 10 15
20 25
Flow rate [L/s]
Flow rate [L/s]
20 25
Flow rate [L/s]
Flow rate [L/s]
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.
30 35 40
30 35 40