22
TOTAL PRESSURE DROPS ( ° - L )
USEFUL STATIC PRESSURE LOW STATIC PRESSURE ( ° - L - H - HL )
USEFUL STATIC PRESSURE HIGH STATIC PRESSURE ( ° - L - H - HL )
280
350
600
300-330
500-550
650-700
0
0
50
100
150
200
250
10000
20000
30000
40000
50000
60000
260
280
300
320
240
220
200
180
160
140
120
100
80
60
40
20
0
0
5000
10000
15000
20000
25000
30000
35000
500 - 550
300 - 330
650 - 700
600
350
280
260
240
220
200
180
160
140
120
100
80
60
40
20
0
0
5000
10000
15000
20000
25000
30000
35000
500 - 550
300 - 330
600
700
650
350
280
11. PRESSURE DROPS
11.1. TOTAL PRESSURE DROPS
Standard cooling only NRL (° - L) and
standard heat pump (H - HL).
NOTE:
The pressure drops and useful static
pressures are calculated in cooling
mode with water at 10°C.
Pr
essur
e dr
ops (kP
a)
Water flow rate l/h
Pr
essur
e dr
ops (kP
a)
Water flow rate l/h
Pr
essur
e dr
ops (kP
a)
Water flow rate l/h
Average water temperature
5
10
15
20
30
40
50
Correction factor
1,02
1
0,985
0,97
0,95
0,93
0,91
NRL_Tecnico (standard-silenziata3)_01_EN.indd 022
22/06/2009 11.47.24