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Leak check Ceiling support Discharge all the nitrogen to create a vacuum and charge the system. Insulation Once you have checked that there are no leaks in the system, you can insulate the piping and hose. 1. To avoid condensation problems, place T13.0 or thicker Acrylonitrile Butadien Rubber separately around each refrigerant pipe. Always make the seam of pipes face upwards.Note No gap Rubber NBR(T13.0 or thicker) 2. Wind insulating tape around the pipes and drain hose avoiding to compress the insulation too much. 3. Finish wrapping insulating tape around the rest of the pipes leading to the outdoor unit. 4. The pipes and electrical cables connecting the indoor unit with the outdoor unit must be fixed to the wall with suitable ducts. Drain pipe and Drain Hose Installation Insulation cover pipe ND...LH... Insulation pipe 1. Install the drain hose as short as possible. . In order to discharge condensation water, the drain hose should keep tilted. . Fix the drain hose with Cable-Tie, so that it will not separate from the machine. . The drain pump connection port is used when using a drain pump. Note 2. When there is no drain pump, Insulate and fix the drain hose according to the figure. . Lock steel ring of the drain hose according to the figure. . Wind and wrap steel ring and drain hose fully with thermal insulation sponge; fix both ends of external layer with ribbon for thermal insulation. Note Indoor unit Must fit tightly against body without any gap. Be sure to overlap the insulation All refrigerant connection must be accessible, in order to permit either unit maintenance or removing it completely. Metal clamp Cable tie Drain socket A-A’ Drain piping Drain hose 5. Select the insulation of the refrigerant pipe. . Insulate the gas side and liquid side pipe referring to the thickness according to the pipe size. . Indoor temperature of 30°C and humidity of 85% is the standard condition. If install in a high humidity condition,use one grade thicker insulator by referring to the table below. If installing in an unfavorable conditions,use thicker one. . Insulator’s heat-resistance temperature should be more than 120°C. Indoor unit Bonding Large sealing pad Pipe Pipe size Insulation Type(Heating/Cooling) Remarks Standard [30°C,85%] High humidity [30°C,over85%] EPDM,NBR Liqued .6.35~.9.52 9t 9t Internal temperature is higher than 120°C pipe .12.7~.50.80 13t 13t Gas Pipe .6.35 13t 19t .9.52 19t 25t .12.70 .15.88 .19.05 .22.23 .25.40 .28.58 32t .31.75 .38.10 .44.45 .50.80 25t 38t . Install the insulation not to get wider and use the adhesives on the connection part of it to prevent moisture from entering. . Wind the refrigerant pipe with insulation tape if it is exposed to outside sunlight. . Install the refrigerant pipe respecting that the insulation does not get thinner on the bent part or hanger of pipe. . Add the additional insulation if the insulation plate gets thinner. Hanger Additional insulation Refrigerant pipe insulation a a.3 Wiring Work Drainpipe Connection Without the drain pump 1. Install horizontal drainpipe with a slope of 1/100 or more and fix it by hanger space of 1.0~1.5m. 2. Install U-trap at the end of the drainpipe to prevent a nasty smell to reach the indoor unit. 3. Do not install the drainpipe to upward position. It may cause water flow back to the unit. Power and communication cable connection 1. Before wiring work, you must turn off all power source. 2. Indoor unit power should be supplied through the breaker(ELCB or MCCB+ELB) separated by the outdoor power. ELCB: Earth Leakage Circuit Breaker MCCB:Molded Case Circuit Breaker ELB:Earth Leakage Breaker 3. The power cable should be used only copper wires. 4. Connect the power cable{1(L), 2(N)} among the units within maximum length and communication cable(F1, F2) each. 5. Connect V1, V2(for DC12V) and F3, F4(for communication) when installing the wired remote Control. 1~1.5m Hanger Flexible hose Horizontal drainpipe more than 1/100 slope Ceiling NLNLNLNLELCBMCCB+ ELB Outdoor Unit With the drain pump Wired Remote Control 1. The drain pipe should be installed within 300mm to 550mm from the flexible hose and then lift down 20mm or more. 2. Install horizontal drainpipe with a slope of 1/100 or more and fix it by hanger space of 1.0~1.5m. 3 Install the air vent in the horizontal drainpipe to prevent water flow back to the indoor unit. You may not need to install it if there were proper sl...

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