Thermor AEROMAX SPLIT 2 Manual De Instalación página 24

Warnings
4.3. Flushing with vacuum pump
• Remove the protective caps from the refill openings (Schrader). Connect the blue
hose of your manometer set to it (equip at the side with a valve tappet in good
condition). Connect a yellow hose with a valve to a vacuum pump with vacuum
meter and open the blue tap at your manometer set.
• Start the vacuum pump and open the valve at the yellow hose until the pressure
remaining in the circuit drops below 0.01 bar. Once the device has been fully
cleared, let the pump run for another 20 minutes.
• Shut the blue tap at your manometer set (manifold) and the valve of the yellow
hose, then shut off the outlet pump without pulling out the hoses applied.
• If after 10 minutes the pressure starts rising again, identify the leakage, seal and
repeat the steps above. The circuit is considered tight if the pressure indicated by
the vacuum meter remains unchanged for 10 minutes.
Vacuum flushing the refrigerant lines is ABSOLUTELY NECESSARY.
Drainage by shock ventilation is impermissible.
4.4. Filling
 Refrigerant lines of more than 15 meters are to be filled with additional refrige-
rant. Add the additional refrigerant before the valves are opened. Also refer to
"Amount of additional refrigerant".
• Remove the caps that provide access to the fixtures (2- and 3-way valves at the exter-
nal aggregate) and open these completely (anti-clockwise and without overstressing
the stop). Start with the 2-way valve.
• In order to clear the hoses from refrigerant, realize the hydraulic and electrical connec-
tion. Access "Service engineer > Menu > Tests" in the device's operating panel and
start the test "heat pump cold mode". Gradually shut off the 2-way valve to achieve
a pressure close to zero. Quickly remove the operating blue hose. If the installation
cannot be hydraulically and electrically connected upon its commissioning, use a
blue hose with valve to prevent the existing refrigerant from being flushed into the
hoses and the manifold. For recovery made by using a refrigerant-recovery- device,
proceed as described above.
• Fully open the 2-way valve.
• Reinstall the caps that provide access to the valves and tighten at 22 Nm.
• Reinstall the refilling opening's protective cap and tighten at 8 Nm.
• Once the covers have been reinstalled and retightened, check all connections for
leak tightness by using an HFC-compliant detector that provides accuracy of at least
5 gr/an.
• If the lines have been properly expanded with the expanding mandrel, there shouldn't
be any leakage. However, if any refrigerant escapes, lead the refrigerant back into
the external aggregate (as described in Section "Returning refrigerant"), the connect
again as described above.
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Presentation Installation