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Beschikbare talen
Restrictions cooling operation
20
18
30AWH 006
16
30AWH 004
14
12
A
10
8
6
4
2
0
-5
0
5
10
15
A - Flow water temperature (°C)
B - External air temperature (°C)
AVAILABLE PRESSURE (HP 12-15 KW)
Pressure available for distribution on the installation and on links
between indoor and outdoor units.
11
10
9
8
7
6
5
4
3
2
1
0
400
600
ATTENTION
The minimum operating fl ow inside the external unit is:
UE 12/15kW = 420 l/h
Consider a safety margin of 100 l / h at least, in order to limit the problems of fouling of
the fi lter.
Available pressure
The available pressure must be handled differently depending on the model of internal unit (1 or 2 zone). In both cases, the indicated curves
account for the pressure drop due to the external unit. It is thus necessary to calculate and compare exclusively the pressure drop of the entire
circuit to check that the system has been installed correctly.
Internal unit 1 zone
The external unit water circuit and that of the heating/cooling system are connected in series.
To obtain the total pressure drop of the system, sum the pressure drop of the external unit, internal unit and heating/cooling system. For sizing
information, see graph 1. Keep the distance between the external and internal units as short as possible.
You can install a supplementary circulation pump if the module's own unit is not powerful enough. For the electrical hookup, refer to «Electrical
circuit».
20
25
30
35
40
45
800
1000
1200
1400
Restrictions of heating operation
70
60
A
50
40
30
20
10
-25
-20
-15
B
50
1600
1800
2000
Flow (l/h)
-10
-5
0
5
10
15
20
2200
2400
2600
2800
/ 47
B
25
30
35
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