Olimpia splendid NEXYA S4 COMMERCIAL DUCT Serie Bedienungs- Und Installationsanleitung Seite 54

6.7 Vacuum with vacuum pump
1) Use the vacuum pump which vacuum level lower than -0.1MPa and the air discharge capacity above 40L/min.
2) The outdoor unit is not necessary to vacuum, don't open the outdoor unit gas and liquid pipe shut-off valves.
3) Make sure the vacuum pump could result as -0.1MPa or below after 2 hrs or above operation. If the pump operated 3
hrs or above could not achieve to -0.1MPa or below, please check whether water mix or gas leak inside of the pipe.
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Pipe gauge
6.35 15 ~ 16 Nm / (153 ~ 163 kgf cm)
9.52 25 ~ 26 Nm / (255 ~ 265 kgf cm)
12.7 35 ~ 36 Nm / (357 ~ 367 kgf cm)
15.9 45 ~ 47 Nm / (459 ~ 480 kgf cm)
19.1 65 ~ 67 Nm / (663 ~ 684 kgf cm)
Connect with vacuum pump
Perform the pump (last for 2 hrs or above)
When get the vacuum level -0.1MPa, the
pump should keep running for 20-60 mins
Shut down the vacuum pump
Place the vacuum state unused (1 hrs or above)
manuals search engine
Tightening torque
Fig. 6-12
Flare shape
90° ± 4
A
R 0.4~0.8
1. Close-off the valve of
vacuum meter.
2. Cut off the connection
between pressure meter
and vacuum pump.
3. Close the vacuum pump.