VERSION WITH STORAGE TANK “A”
CONDENSER
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
11000
12000
0
20
40
60
80
100
120
140
160
WRL025
WRL030
WRL040
WRL050
WRL070
WRL080
WRL100
WRL140
WRL160
Water flow rate (l/h)
Pressure drops (kPa)
FUNCTIONING IN HEATING MODE
EVAPORATOR
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
11000
12000
13000
14000
15000
16000
17000
0
50
100
150
200
250
300
350
WRL025
WRL030
WRL040
WRL050
WRL070
WRL080
WRL100
WRL140
WRL160
Water flow rate (l/h)
Pressure drops (kPa)
COOLING MODE FUNCTIONING
The tables state the correction to apply
to the pressure drops on variation of the
average temperature.
The minimum flow rates
have been calculated with
reference to the features of
the water flow rate control
device (differential pressure
switch).
= “field of application
not accepted with standard
pump”. CONTACT THE HEAD
OFFICE.
0
20
40
60
80
100
120
140
160
0 1000 2000 3000 4000 5000 6000 7000 8000
Pressure drops [kPa]
Water flow rate [l/h]
PRESSURE DROP 2-WAY MODULATING VALVE
PRESSURE DROP 2-WAY MODULATING VALVE
Water flow rate l/h 500 1000 2000 3000 4000 5000 6000 7000
Pressure drop Kpa 0,7 3 11 25 44 69 100 136
ATTENTION:
In case of power failure
the valve remains locked
in the working position. In
order to avoid unnecessary
water consumption, it is
recommended to install,
upstream of the water mains
supply, a shut-off device.
ATTENTION:
Max. differential pressure
4 bar
34
IWRLTY. 1201. 5890974_06