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• The through-wall height of drain hose shouldn’t be higher than the outlet pipe hole of indoor unit.
• For efficient drainage, the water outlet should not be submerged.
• Slant the drain hose slightly downwards; the drain hose can’t be curved, raised, wavy, etc.
VACUUM PUMPING
• Remove the valve caps on the liquid valve and
gas valve and the nut of refrigerant charging
vent.
• Connect the manometer charging hose to
the refrigerant charging vent of gas valve and
then connect the other charging hose to the
vacuum pump.
• Open the manometer completely and operate
for 10 to 15 minutes to check if the pressure of
manometer remains at -0.1 MPa.
• Close the vacuum pump and maintain this status for
1 to 2 minutes to check if the pressure remains at -0.1
MPa (less than 500 microns, it could take more dans 15
minutes). If the pressure decreases, there may be leakage.
• Open the liquid valve and gas valve completely with inner
hexagon spanner and remove the manometer (less than 500
microns).
• Tighten the screw caps of valves and refrigerant charging vent.
The drain hose can’t raise
upwards.
The drain hose must be straightened.
The drain hose can’t be wavy.
The water outlet can’t be
placed in the water.
Lo Hi
liquid valve piezometer
valve cap
vacuum pump
close
open
inner hexagon
spanner
gas valve
refrigerant
charging vent
nut of refrigerant
charging vent
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