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★Vacuum Pumping Method (R410A refrigerant evacuation must use the
vacuum pumping method)
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 the potential air leakage)
25 Outdoor condensation drainage(Heat pump type only)
7-4 Check after installation and test operation
1. Check after installation
★ Electrical Safety Check
① If the supply voltage is as required.
② If there is any faulty or miss connection in each of the power, signal and
grounding wires.
③ If the grounding wire of the air conditioner is securely grounded.
★ Installation Safety Check
① If the installation is secure.
1. To prevent air leakage and spilling tighten all connecting nut 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 out
reliably through the drain house.
Installation：
Install the outdoor drain elbow in Φ25
hole on the base plate, and joint the drain
hose to the elbow, so that the waste water
formed in the outdoor unit can be drained
out to a proper plate.
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