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•
Open the upper door (S) rotating it upwards to access the components for filling of the system with
technical water. (fig. 7)
•
Under the upper door (S) are located the tap (25) for filling of the system with technical water and the
technical water circuit pressure manometer (26). (Fig.7)
2.3 - INSTALLATION OF THE EXTERNAL UNIT
• Install the external unit on a solid base able to bear its weight.
The external unit, if installed in an incomplete manner or on an unsuitable base,
may result in damages to people or property in case of detachment from its base.
It is very important that the environment in which installation is carried out is chosen with maximum care to
ensure appropriate protection of the appliance from possible impacts and consequent damages. Choose an
appropriately ventilated environment, in which external temperature does not exceed 46°C during the summer.
•
Leave sufficient free space to avoid recirculation and to ease maintenance operations around the
appliance.
•
Prepare, under the appliance, a layer of gravel for defrosting water drainage.
•
Leave some space under the unit to prevent freezing of defrosting water.
In case of installation in localities subject to heavy snowfalls, mount the support
of the appliance at a height higher than the maximum level of snow.
•
Install the unit so that it is not affected by wind.
•
Install anti-vibration blocks and a compliant power supply near the external unit.
See the manual of the external unit for more detailed information on installation.
2.4 - OPERATIONAL LIMITS
The charts define water temperature (LWT) and external air (ODT) limits within which the heat pump can
work in the two cooling modes, heating and domestic water production (DHW).
HEATING
ODT
35
30
24
19
5
0
-15
-20
-25
5 12 25
45 50 60 65
The parts highlighted in grey show the moment in which the electric heaters intervene in addition to the
main circuit.
COOLING
ODT
43
19
10
-5
LWT
5
11
DOMESTIC WATER
ODT
43
35
30
24
19
5
0
-15
-20
LWT
-25
25
50
5 12 25
SHERPA AQUADUE TOWER
ACS
LWT
45 50 60 65
EN - 15
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