Volume Of The Heating System; Filling And Purging The Installation - Fujitsu Waterstage WOYA060LFCA Installation And Operating Manual

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
extensa (duo) 5 Comfort (duo) 5
Comfort (duo) 6
extensa (duo) 6
extensa (duo) 8 Comfort (duo) 8
Comfort (duo) 10 extensa (duo) 10
extensa (duo) 13
extensa (duo) 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 25 - Hydraulic unit bleeder valve
Installation and operation manual "1764 - EN"
Minimum volume in liters BY CIRCUIT (without HP)
Obligation
fan-coil
23
23
36
49
55
74
44, once the
Recommendation
Radiator
12
12
33
44
50
66
Recommendation
Heating-cooling floor
2
2
15
22
25
35
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