10.3.6. PIPE INSULATION1. Please carry out insulation at pipe connection portion asmentioned in Indoor/Outdoor Unit Installation Diagram.Please wrap the insulated piping end to prevent water fromgoing inside the piping.2. If drain hose or connecting piping is in the room (where dewmay form), please increase the insulation by using POLY-EFOAM with thickness 6 mm or above.CHECK THE DRAINAGE1. Pour a glass of water into the drain tray-styrofoam.2. Ensure if water flows out from drain hose of indoor unit.DISPOSAL OF OUTDOOR UNIT DRAIN WATER• If a drain elbow is used, the unit should be placed on astand which is taller than 3 cm.• If the unit is used in an area where temperature falls below0°C for 2 or 3 days in succession, it is recommended not touse a drain elbow, for the drain water freezes and the fanwill not rotate.EVALUATION OF THE PERFORMANCE1. Operate the unit at cooling operation mode for fifteenminutes or more.2. Measure the temperature of the intake and discharge air.3. Ensure the difference between the intake temperature andthe discharge is more than 8°C.CHECK ITEMSIs there any gas leakage at flare nut connections?Has the heat insulation been carried out at flare nutconnection?Is the indoor/outdoor connecting cable being fixed to terminalboard firmly?Is the indoor/outdoor connecting cable being clamped firmly?Is the drainage OK?(Refer to “Check the drainage” section)Is the earth wire connection properly done?Is the indoor unit properly hooked to the installation plate?Is the power supply voltage complied with rated value?Is there any abnormal sound?Is the cooling operation normal?Is the thermostat operation normal?Is the remote control’s LCD operation normal?Is the air purifying filter installed?50CS-A28BKP5/CU-A28BKP5