20Installation ProcedureInstallation ProcedureEnglish5 Select the insulation of the refrigerant pipe.• Insulate the gas side and liquid side pipe, noting theinsulation thickness that must differ according to thepipe size.• Standard: Less than an indoor temperature of 30°C,with humidity at 85%. If installing in a high humidityenvironment, use one grade thicker insulator byreferring to the table below. If installing in anunfavourable environment, use thicker one.• The heat-resistance temperature of the insulator mustbe more than 120°C.Pipe Pipe sizeInsulation type(heating/cooling)RemarksStandard(Less than30°C, 85%)High humidity(Over 30°C,85%)EPDM, NBRLiquidpipeØ6.35 toØ9.52 9t 9tThe internaltemperatureis higher than120°C.Ø12.7 toØ19.05 13t 13tGaspipeØ6.35 13t 19tØ9.5219t 25tØ12.70Ø15.88Ø19.05• When installing insulation in the places andconditions below, use the same insulation that is usedfor high humidity conditions.High humidity locations such as shorelines, hot springs,lake or riversides, and ridges (when part of the building iscovered by earth and sand)Restaurant ceiling, sauna, swimming pool etc.Ceilings frequently exposed to moisture and cooling arenot covered. For example, pipes installed at a corridor of adormitory and studio or near an exit that opens and closesfrequently.Places (where the pipes are installed) that are highly humiddue to a lack of ventilation.Step 10 Installing the drain hose anddrain pipe1 Push the supplied drain hose as far as possible over thedrain socket.2 Tighten the metal clamp as shown in the picture.3 Wrap the supplied large sealing pad over the metalclamp and drain hose to insulate and fix it with clamps.4 Insulate the complete drain piping inside the building(field supply).If the drain hose cannot be sufficiently set on a slope, fitthe hose with drain raising piping (field supply).5 Push the drain hose up to insulation when connectingthe drain hose to drain socket.Metal clamp Drain socketDrain hoseBe sure to bond the drainhose and the main pipe.Drain pipeLarge seailng padDrain hosePVC Tube Joint+ VP25 (OD: 32 mm, ID: 25 mm)Drain pipe