51
11 - NOMINAL WATER FLOW CONTROL WITH VARIABLE-SPEED PUMP
11.1 - Pump ow/pressure curve
Units with variable-speed hydraulic module include a water pump that automatically adjusts the ow to maintain a constant pressure
or constant temperature difference.
No control is required at start-up, but the control mode must be selected at the unit interface (refer to the TouchPilot Junior Control
manual).
11.2 - Available external static pressure (variable-speed High / Fixed speed-pressure Double
pumps, units with hydraulic module
Data applicable for:
- Fresh water (without antifreeze) 20 °C
- In case of use of the glycol, the maximum water ow is reduced
- The curves represented below are in normal conditions: leaving water on the back side of the unit (without option 274).
Evaporator
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
0 1 2 3 4 5 6 7 8 9 10 11 12
Water ow rate, l/s
Pressure head, kPa
BC
D
E
F
G
1 61WG/30WG/30WGA 110
2 61WG/30WG/30WGA 120
3 61WG/30WG/30WGA 140
4 61WG/30WG/30WGA 150
5 61WG/30WG/30WGA 170
6 61WG/30WG/30WGA 190
Condenser
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
0 1 2 3 4 5 6 7 8 9 10 11 12
Water ow rate, l/s
Pressure head, kPa
E
F
G
BC
D
1 61WG/30WG 110
2 61WG/30WG 120
3 61WG/30WG 140
4 61WG/30WG 150
5 61WG/30WG 170
6 61WG/30WG 190