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Refrigerant Piping Connection
Before Test Run
Only perform test run after you have completed the following steps:
• Electrical Safety Checks – Confirm that the electrical system is safe and operating properly.
• Gas Leak Checks – Check all flare nut connections and confirm that the system is not leaking.
• Confirm that gas and liquid (high and low pressure) valves are fully open.
3
Post Installation Checks
List of Checks to Perform Possible Malfunctions PASS/FAIL
Is the main body installed securely?
The unit may fall down, vibrate or
produce noise.
Did you conduct a water leakage test?
Cooling capacity may become
inadequate if there is a leak.
Is the unit well insulated from heat?
Condensate, water droplets may
occur.
Does water drain properly from drain
hose?
Condensate, water droplets may
occur.
Is the voltage consistent with the
specifications stated on the nameplate?
The unit may fail or its components
may get burned.
Are the wires, piping, and valves
installed correctly?
The unit may fail or its components
may ignite.
Has the unit been safely grounded?
If not, there is a risk of electrical
leakage.
Do the wire specifications comply with
the requirements?
The unit may fail or its components
may ignite.
Are there any obstacles blocking the air
inlet or outlets of the units?
Cooling capacity could be affected if
there is an obstruction.
Have you recorded the length of
refrigerant pipe and the refrigerant
charge amount?
The refrigerant charging amount
cannot be controlled.
Outdoor (2): Indoor (2):
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