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Air to Water Heat Pump split system
4 .1 .3 Volume of the heating system
You must respect the minimum installation water
volume. Install a buffer tank on the return of the
heating circuit in case of lower volume than this value.
In the case of a system equipped with Thermostatic(s)
valve(s), it is necessary to ensure that this minimum
water volume can flow.
HP
High Power 112 Single Phase
excellia duo 11
High Power 112
excellia duo tri 11
3-Phase
High Power 140 Single Phase
excellia duo 14
excellia duo tri 14
High Power 140
3-Phase
High Power 160 3-Phase
excellia duo tri 16
4 .2
Filling and purging the installation
Check the pipe fixings, the tightness of the connectors
and the stability of the appliance.
Check the direction in which the water is circulating and
that all the valves open.
Proceed to fill the installation.
Do not operate the circulating pump while filling. Open all
the drain valves in the installation and the bleeder valve
for the hydraulic unit (P) to remove the air contained in
the conduits.
Close the drain and bleeder valves and add water until
the pressure in the hydraulic circuit reaches 1 bars.
Check that the hydraulic circuit has been purged correctly.
Check there is not a leak.
After the
"Commissioning", page
machine has started, purge the hydraulic unit again
(2 litres of water).
" Precise filling pressure is determined by the
manometric height of the installation.
P
figure 24 - Hydraulic unit bleeder valve
Installation and operating manual "1775 - EN"
Minimum volume in liters BY CIRCUIT (without HP)
Obligation
fan-coil
55
74
87
38, once the
Recommendation
Radiator
50
66
80
Recommendation
Heating-cooling floor
25
35
44
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