Carrier AquaSnap 61AF 055 - Nominal System Water Flow Control; 9.3 Variable Speed Flow Control Procedure

9 - NOMINAL SYSTEM WATER FLOW CONTROL
9.3 - Water ow control procedure (variable
speed)
61AF units with variable speed hydraulic module include a water
pump that automatically adjusts the ow to maintain a constant
temperature di󰀨erence.
No control is required at start-up, but the control mode must be
selected in the unit control by a Carrier service representant.
9.4 - Available system pressure for units with
hydraulic module
The available pressure curves for the 61AF units are given for the
higher variable speed of the pump (maximum available pressure).
Data applicable for:
- Fresh water 20°C
- In case of use of the glycol, the maximum water ow is
reduced
For pure water at 20°C
61AF Maximum condenser water ow rate, l/s
22 1,8
30 2,4
35 2,8
45 3,8
55 4,6
75 5,9
105 6,1
(1) Maximum ow rate corresponding to an available pressure of 20 kPa minimum
(units with hydraulic module).
Water ow rate, l/s
Available pressure, kPa
1
2
3
1 61AF 022
2 61AF 030
3 61AF 035
Water ow rate, l/s
Available pressure, kPa
1
2
1 61AF 045
2 61AF 055
Available pressure, kPa
Water ow rate, l/s
2
1
1 61AF 075
2 61AF 105