Haier AU242FHBHA Installation Manual

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L1 6.35 Actual length of liquid piping(From outdoor unit to Electronic Expansion Valve Assembly);L2 9.52 Actual length of liquid piping(From outdoor unit to Electronic Expansion Valve Assembly);L3 12.7 Actual length of liquid piping(From outdoor unit to Electronic Expansion Valve Assembly);L4 6.35 Actual length of liquid piping(From electronic Expansion Valve Assembly to indoor unit);L5 9.52 Actual length of liquid piping(From electronic Expansion Valve Assembly to indoor unit);L1 6.35 Actual length of liquid piping;L2 9.52 Actual length of liquid piping;13Refrigerant chargeRefrigerant charge amount at filed = Actual length of liquid piping X Additional charge amount per 1m in liquid piping.9.5212.7Diameter of liquid piping6.35 0.030kg0.065kgAdditional charge amount of refrigerant per 1m0.120kgPiping insulationInsulate gas and liquid piping separately.Heat resisting of insulation material of gas piping should be above 120Valve openingOpen all the valves of outdoor unit.Input refrigerant through service port of gas and liquid side.In case of failing to fill up prescribed weight of refrigerant, open all of gas and liquid valves, then close the gas valve abit. Turn on the compressor and input refrigerant from the service port of the gas side. Use gas cylinder to regulate theflow of refrigerant to enable gasification when sucked by system.In case of refrigerant leakage and refrigerant insufficiency, refrigerant can be recover from the system and fill upprescribed weight of refrigerant again.Additional refrigerant chargeInstallation Procedures Connecting pipingFor example: Additional charge amount R(kg)=(L1x0.030kg/m)+(L2x0.065kg/m)+...After air purge, replace the vacuum pump with refrigerant pump to charge refrigerant.Calculation of refrigerant charge amountRefrigerant precharged at factory does not include the amount necessary for field using.The amount necessary for charging piping is according to the calculation result.Additional charge amount is according to the piping diameter and length in job site to calculate.The formula for Convertible Type and Cassette Type and Cabinet Type Indoor unit :The formula for Wall mounted Type and Ceiling concealed Type Indoor unit :For example: Additional charge amount R(kg)=(L1x0.030kg/m)+(L2x0.065kg/m)+(L3x0.120kg/m)+(L4x0.016kg/m)+(L5x0.035kg/m)