Indoor Unit: 15/18/24 Class SiUS041111162 Removal Procedure2.5 Removal of Indoor Heat ExchangerProcedure Warning Be sure to wait for 10 minutes or more after turning off all power suppliesbefore disassembling work.Step Procedure Points1. Disconnect the refrigerantpiping.Preparation Remove the electrical boxaccording to the “Removal ofElectrical Box / PCBs / SwingMotors”.CautionIf the refrigerant leaks, repair thespot of leaking, then collect allrefrigerant from the unit. Afterconducting vacuum drying,recharge proper amount ofrefrigerant.CautionIn pump-down work, be sure tostop the compressor beforedisconnecting the refrigerantpipe. If the refrigerant pipe isdisconnected with thecompressor operating and thestop valve open, air may besucked in and may generate anover-pressure in refrigerationcycle, thus resulting in piperupture or accidental injury. Place a plastic sheet under thedrain pan to prevent fromwetting the floor with remainingdrain. If the drain hose is embedded inthe wall, disconnect the drainhose beforehand. Carry out the removal workswith 2 wrenches. When the pipings aredisconnected, protect both theopenings of pipe and unit fromentering of moisture.1 Hold the indoor unit upwith a piece of woodetc.2 Pull out the drain hose.3 Unscrew the flare nutfor gas piping with 2wrenches.4 Unscrew the flare nutfor liquid piping with 2wrenches.Drain hose(R2794)Liquid pipingGas piping(R2796)
