Samsung AR**HS Installation Manual

Contents

23EnglishInstallationStep 4.3 Performing final check andtrial operation1 Check the following:• Strength of the installation site• Tightness of pipe connection to detect gas leak• Electric wiring connection• Heat-resistant insulation of the pipe• Drainage• Grounding conductor connection• Correct operation (Take the following steps.)2 Press the (Power) button on the remote control tocheck the following:• The indicator on the indoor unit lights up.• The airflow blade opens and the fan gears up foroperation.3 Press the (Mode) button to select Cool or Heatmode. Then take the following sub-steps:• In Cool mode, use the Temperature button to setthe set temperature to 16 °C.• In Heat mode, use the Temperature button to setthe set temperature to 30 °C.• Check whether, approximately 3 to 5 minuteslater, the outdoor unit starts, and a cool or warmair blows out.• After 12 minutes of stationary condition, checkthe indoor unit air treatment.4 Press the (Air swing) button to check whether theairflow blades work properly.5 Press the (Power) button to stop the trial operation.Pumping down refrigerantPump-down is an operation intended to collect all thesystem refrigerant in the outdoor unit. This operation mustbe carried out before disconnecting the refrigerant tubingin order to avoid refrigerant loss to the atmosphere.1 Shut off the liquid valve with the Allen wrench.2 Turn on the air conditioner in cooling with fanoperating at high velocity. (Compressor willimmediately start, provided 3 minutes have elapsedsince the last stop.)3 After 2 minutes of operation, shut the suction valvewith the same wrench.4 Turn off the air conditioner and switch mains supplyoff.5 Disconnect tubing. After disconnection, protect valvesand tubing ends from dust.CAUTION• Compressor damage may occur if the compressor isrun at a negative suction pressure.Pumping down for removing the product1 Hold down the (Power) button on the indoor unitfor 5 seconds. Beep sounds immediately to indicatethat the product is ready for pump down procedure.2 Let the compressor run for more than 5 minutes.3 Release the valve caps on High and Low pressure side.4 Use L-wrench to close the valve on the high pressureside.5 After approximately 1 minute, close the valve on thelow pressure side.6 Stop operation of the air conditioner by pressingthe (Power) button on the indoor unit or remotecontrol.7 Disconnect the pipes.12Liquid service port Gas service portOff1 minute

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