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2-1-1
Content check
Power supply cable
Connection cable between indoor
and outdoor unit
Earth wire
•
Is the wire set up and connected as described in the instructions? Check for any phase sequence.
•
Are the wire connection’s screws loose?
•
Is the open and close device / leakage breaker installed?
•
Is the power supply cable’s thickness and length appropriately measured as described in the instructions?
•
Is it earthed (grounded)?
•
Check that the insulation resistant value is more than 1M .
Use the 500 V mega-testers to measure the insulation.
Do not use the mega-tester for any other circuit except for voltage of 220-230-240V~ .
•
Are the wire connections for the indoor/outdoor units connected as described in the instructions? Are
there any looped wires?
Refrigerant pipe
•
Is the piping installed as described in the instructions?
•
Are the pipes sizes appropriate?
•
Does the pipe’s length adhere to the specifi cations?
•
Is the branch pipe slant being appropriately done as described in the instructions?
•
Was vacuum removal suffi ciently carried out?
•
Was the leak tightness test carried out with nitrogen gas? Use the testing pressure of 4.15 MPa.
•
Is the piping insulation material appropriately installed? (Insulation material is necessary for both gas
and liquid piping.)
•
Is the 2/3-way valve for the liquid side and gas side open?
•
Never switch the power supply ON until the installation has completed.
•
Supply electrical current through all indoor units and check the voltage.
•
Supply electrical current through all the outdoor units and check each inter-phase voltage.
•
Before the test run, ensure to check that the 2/3-way valve is open. Operating while the valve is closed causes the compressor to fail.
Check Before Test Run
2-1. Preparing for Test Run
U-36PZ3E5, U-50PZ3E5, U-60PZ3E5, U-71PZ3E5
SM830283-00_欧州向け R32シングル36-71形TD&SM.indb 1 2020/01/29 19:52:14
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