York J Series Installation Manual

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York J Series Installation Manual Manual pdf 11 page image

9EnglishVACUUMING AND CHARGINGPurging The Piping And The Indoor UnitExcept for the outdoor unit which is pre-chargedwith refrigerant, the indoor unit and therefrigerant connection pipes must be air-purgedbecause the air containing moisture that remainsin the refrigerant cycle may cause malfunctionof the compressor.• Remove the caps from the valve and theservice port.• Connect the center of the charging gauge tothe vacuum pump.• Connect the charging gauge to the serviceport of the 3-way valve.• Start the vacuum pump. Evacuate forapproximately 30 minutes. The evacuationtime varies with different vacuum pumpcapacity. Confirm that the charging gaugeneedle has moved towards -760mmHg.Caution• If the gauge needle does not move to-760mmHg, be sure to check for gas leaks(using the refrigerant detector) at flare typeconnection of the indoor and outdoor unitand repair the leak before proceeding to thenext step.Service port Outdoor unit 3 ways valveFlare nut Refrigerant pipingAllen key• Close the valve of the charging gauge andstop the vacuum pump.• On the outdoor unit, open the suction valve(3 way) and liquid valve (2 way) (in anti-clockwise direction) with 4mm key forhexagon sacked screw.• All wires must be firmly connected.• All wires must not touch the refrigerant piping, compressor or any moving parts of the fanmotor.• The connecting wires between the indoor and the outdoor unit must be clamped on the wireclamps.• The power supply cord must be equivalent to H05RN-F (245IEC57) which is the minimumrequirement.