Filling The Installation With Gas; Final Sealing Test - Fujitsu Waterstage WOYA060LFCA Installation And Operating Manual

Air to Water Heat Pump, split system

3 .4 .3 Filling the installation with gas

If an additional charge is requires, add the
additional charge before filling the hydraulic unit
with gas. Please refer to the para.
charge", page 27 .
- Remove the access plugs (A) from the valve controls.
- First of all fully open the "Liquid" valve (small)
and then the "Gas" valve (large) using a hex key
(counterclockwise direction)
excessively against the stop.
- Remove the hose rapidly to the Manifold
- Refit the 2 original caps (be sure they are clean) and
tighten them to the recommended tightening torque.
The sealing is performed in the caps only metal to metal.
The outdoor unit does not contain any additional
refrigerant, enabling the installation to be purged.
Flushing is strictly forbidden.

3 .4 .4 Final sealing test

The sealing test must be performed with a certified gas
detector (sensitivity 5g/year).
Once the refrigeration circuit has been gassed as
described above, check that all the refrigeration
connectors are gas-tight (6 connectors for models 5 & 6,
5 connectors for model 8 and 4 connectors for model
>10). If the flarings have been made correctly, there
should be no leaks. Eventually, check the tightness of
the refrigerant valves caps.
" If there is a leak:
- Bring the gas into the outdoor unit (pump down).
The pressure should not drop below atmospheric
pressure (0 bar to read on Manifold) so as not to
contaminate the recovered gas with air or moisture.
- Remake the defective connection,
- Repeat the commissioning procedure.
- 26 -
"Additional
without forcing
Installation and operation manual "1764 - EN"