Samsung AS18A1QC Owner's Instructions & Installation Manual

Contents

E-38Connecting Up and Purging the CircuitModel✴✴18✴✴✴✴24✴✴A0.2 oz0.3 ozABCDB(liquid)Outdoor unit Indoor unitGas pipe sideLiquid pipe sideStem capValve stemA(gas)Vacuum PumpThe outdoor unit is loaded with sufficient R-22 refrigerant for 16.4 feetof piping. The air in the indoor unit and in the pipe must be purged.If air remains in the refrigeration pipes, it will affect the compressor,reduce to cooling capacity and could lead to a malfuction.Refrigerant for air purging is not charged in the outdoor unit. Use VacuumPump as shown at the figure.1 Connect each assembly pipe to the appropriate valve on the outdoor unitand tighten the flare nut.2 Referring to the illustration opposite, tighten the flare nut first manuallyand then with a wrench, applying the following torque.Pipe Outer Diameter Torque (kg.cm)Liquid refrigerant 6.35 mm (1/4") 160Gas refrigerant 12.70 mm (1/2 ") 500Gas refrigerant 15.88 mm (5/8 ") 7003 Connect the charging hose of low pressure side of manifold gauge to thepacked valve having a service port as shown at the figure.4 Open the valve of the low pressure side of manifold gauge counter-clockwise.5 Purge the air from the system using vacuum pump for about 10 minutes.- Close the valve of the low pressure side of manifold gauge clockwise.- 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.6 Set valve cork of both liquid side and gas side of packed valve to the openposition.7 Mount the valve stem nuts and the service port cap to the valve, andtighten them at the torque of 18N•m with a torque wrench.8 Check for gas leakage.- At this time, especially check for gas leakage from the 3-way valve’sstem nuts, and from the service port cap.Adding RefrigerantRefrigerant must be added if the piping measures more than 5 metres in length(maximum of 10 metres). This operation can only be performed by a qualifiedrefrigeration specialist.☛ If you have used... Then...More than 16.4' “A” of refrigerant (R22)of piping must be added for eachextra foot.Less than 16.4' The purge time is normal.of pipingRefer to the Service Manual for more details on this operation.53(11 ft•lb)52(36 ft•lb)53(50 ft•lb)

/ 42

Related manuals for Samsung AS18A1QC