A A A A A Cuum Draining The Indoors Unit And The Refrigera Cuum Draining The Indoors Unit And The Refrigera Cuum Draining The Indoors Unit And The Refrigerating Pipes Ting Pipes Ting Pipes; Vacuum Draining Procedure - Airwell TRIO HIGH TECH XLM12 Installation And Maintenance Manual

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V V V V V A A A A A CUUM DRAINING THE INDOORS UNIT AND THE REFRIGERA CUUM DRAINING THE INDOORS UNIT AND THE REFRIGERA CUUM DRAINING THE INDOORS UNIT AND THE REFRIGERATING PIPES CUUM DRAINING THE INDOORS UNIT AND THE REFRIGERA CUUM DRAINING THE INDOORS UNIT AND THE REFRIGERA
The R407C charge is only contained in the outdoors unit.
The indoor unit contains a small quantity of neutral GAS. For this reason, after having
installed the pipe connections, it is imperative to proceed with vacuum draining the
connections and the indoor unit.

VACUUM DRAINING PROCEDURE

The outdoors unit has a valve provided for the installation to be vacuum drained (large valve).
1. Connect the refrigerating pipes between the indoors and the outdoors units.
2. Connect the vacuum pump to the FLARE connector of the outdoor unit equipped
with the service valve (large connector).
3. Start the vacuum pump and check that the vacuum gauge drops to -0.1Mpa
(-76cm Hg). The pump should be run for at least 15 minutes.
4. Before removing the vacuum pump, you must check that the vacuum gauge
remains stable for 5 minutes.
5. Disconnect the vacuum pump and close the service valve.
6. Remove the cap from the «GAS» and LIQUID» valves and open them with a
hexagonal spanner, in order to release the R407C refrigerant fluid contained in
the outdoor unit.
7. In the case where the refrigerant pipe connection of one way is longer than 4 m.
add an additional charge in accordance with the values stated in Table N° 1.
8. Check the seal on all the connections. Use an electronic leakage detector or a
soapy sponge.
9. Repeat these operations for connecting the 2
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TING PIPES TING PIPES TING PIPES TING PIPES
nd , 3 rd indoors units.