LG LCU240CP Service Manual - Page 26
Heat Insulation and pipings
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Installation 6. Heat Insulation and pipings HEAT INSULATION 1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C(248°F) ). 2. Precautions in high humidity circumstance: Fastening band (accessory) This air conditioner has been tested according to the "KS Standard Conditions with Mist" and con here is not any default. However, if it is operated for a long time in high humid atmosphere (dew point temperature: more than 23°C(73.4°F)), water drops are liable to fall. In this case, add heat insulation material according to the following procedure: Indoor unit Refrigerant piping Thermal insulator (accessory) • Heat insulation material to be prepared... Adiabatic glass wool with thickness 10 to 20mm(0.39 to 0.79inch). • Stick glass wool on all air conditioners that are located in ceiling atmosphere. • In addition to the normal heat insulation (thickness: more than 8mm(0.31inch)) for refrigerant piping (gas piping: thick piping) and drain piping, add further 10mm to 30mm(0.39inch to 1.18 inch) thickness material. FORM THE PIPINGS 1. Wrap the connecting portion of indoor unit with the Insulation material and secure it with two Plastic Bands. (for the right pipings) • If you want to connect an additional drain hose, the end of the drain-outlet should be kept at a distance from the ground. (Do not dip it into water, and fix it on the wall to avoid swinging in the wind.) In case of the Outdoor unit being installed below position of the Indoor unit. 2. Tape the Pipings, drain hose and Connecting Cable from bottom to top. 3. Form the pipings gathered by taping along the exterior wall and fix it to the wall by saddle or equivalent. Seal a small opening around the pipings with gum type sealer. Drain hose Taping Plastic Band Pipings Connecting cable Power supply cord Trap is required to prevent water from entering into electrical parts. 26 Ceiling Cassette Air Conditioner