Samsung SH07APG Technical Manual

Also see for SH07APG: Owner's instructions Installation manual Service manual

Contents

36 | SAMSUNGINSTALLATION5 Installation Diagram of Indoor Unit and Outdoor Unit (cont.)5-2-7. Air-Purge ProcedureThe outdoor unit is loaded with sufficient R22 refrigerant for 5 metres of piping. The air in the indoor unit and in the pipe must bepurged. If air remains in the refrigeration pipes, it will affect the compressor, reduce to cooling/heating capacity and could lead toa malfunction. Refrigerant for air purging is not charged in the outdoor unit. Use Vacuum Pump as shown at the figure.ABCDOutdoor unit Indoor unitGas pipe sideLiquid pipe sideVacuumPump1. Connect each assembly pipe to the appropriate valve onthe outdoor unit and tighten the flare nut.2. Referring to the illustration opposite, tighten the flare nut first manually and thenwith a wrench, applying the following torque.3. Connect the charging hose of low pressure side of manifold gauge to the packedvalve having a service port as shown at the figure.4. Open the valve of the low pressure side of manifold gauge counterclockwise.5. Purge the air from the system using vacuum pump for about 10 minutes. Close the valve of the low pressure side of manifold gaugeclockwise. Make sure that pressure gauge show -0.1MPa(-76cmHg)after about 10minutes.This procedure is very important in order to avoid gas leak. Turn off the vacuum pump Remove the hose of the low pressure side of manifold gauge.* The designs and shape are subject tochange according to the model.Adding RefrigerantRefrigerant must be added if the piping measures more than 7.5 metres in length.This operation can only be performed by a qualified refrigeration specialist.If you have used... Then...More than "A" metres "B" of refrigerant (R410A)of piping must be added for eachextra meter.Less than "A" metres The purge time is normal.of pipingRefer to the Service Manual for more details on this operation.6.35mm9.52mm12.70mm140~170250~280380~420Outer Diameter Torque(kg.cm)MODEL A BSH07/09A✴✴ 7.5 20SH12A✴✴ 7.5 30