Page 23
Vacuum Pumping Method (R410A
refrigerant evacuation must use the vacuum
pumping method).
Expelling the air
Before working on the air conditioner,
remove the cover of the stop valve (gas and
liquid valves) and be sure to retighten it
afterward. (to prevent potential air leakage)
1. To prevent air leakage and spilling tighten
all connecting nuts of all flare tubes.
2. Connect the stop valve, charge hose,
manifold valve, and vacuum pump.
3. Fully open the handle Lo of the manifold
valve and apply vacuum for at least 15
minutes and check that the compound
vacuum gauge reads -0.1MPa(-76cmHg).
4. After applying vacuum, fully open the stop
valve with a hex wrench.
5. Check that both indoor and outdoor
connections are free of air leakage.
When the unit is heating, the condensing
water and defrosting water can be let out
reliably through the drain house.
Installation:
Install the outdoor drain elbow in the Ø25
hole on the base plate, and join the drain
hose to the elbow so that the waste water
formed in the outdoor unit can be drained out
safely to a proper place.
Outdoor condensation drainage (Heat
pump type only)
To Next Page
Loading...
