Toshiba RAV-SP420CT-UL, RAV-SP300CT-UL, RAV-SP180CT-UL, RAV-SP240CT-UL Under Ceiling Type

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Under Ceiling Type

Installation Manual

•Conform to the regulations of the local electric company when wiring the power supply. Inappropriate grounding may cause electric shock.

•For the refrigerant recovery work (collection of refrigerant from the pipe to the compressor), stop the compressor before disconnecting the refrigerant pipe.

If the refrigerant pipe is disconnected while the compressor is working with the valve open, the compressor sucks air and the refrigeration cycle is overpressurized, which may cause a burst or injury.

CAUTION

•THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT DESTROY OZONE LAYER.

•The characteristics of R410A refrigerant are ; easy to absorb water, oxidizing membrane or oil, and its pressure is approx. 1.6 times higher than that of refrigerant R22. Accompanied with the new refrigerant, refrigerating oil has also been changed. Therefore, during installation work, be sure that water, dust, former refrigerant, or refrigerating oil does not enter the refrigerating cycle.

•To prevent charging an incorrect refrigerant and refrigerating oil, the sizes of connecting sections of charging port of the main unit and installation tools are changed from those for the conventional refrigerant.

•Accordingly the exclusive tools are required for the new refrigerant (R410A).

•For connecting pipes, use new and clean piping designed for R410A, and please care so that water or dust does not enter.

•Tighten the flare nut with a torque wrench in the specified manner.

Excessive tightening of the flare nut may cause a crack in the flare nut after a long period, which may result in refrigerant leakage.

•Wear heavy gloves during the installation work to avoid injury.

•The installation fuse must be used for the power supply line of this conditioner.

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Contents RAV-SP180CT-UL RAV-SP240CT-UL RAV-SP300CT-UL AIR CONDITIONER SPLIT TYPERAV-SP360CT-UL RAV-SP420CT-UL EnglishADOPTION OF NEW REFRIGERANT ContentsUnder Ceiling Type 1 ACCESSORY PARTS„Accessory parts Under Ceiling Type 2 PRECAUTIONS FOR SAFETYUnder Ceiling Type „Installation space 3 SELECTION OF INSTALLATION PLACE„Height of ceiling Avoid installing in the following places„Before installation „Wireless remote control2 Removing wire guard Under Ceiling TypeInstallation Manual3 Removal of side panel „External view4 Removal of protective vinyl 5 Removal of protectorUnder Ceiling Type Installation Manual Unit in mm„Draw-outdirection of pipe/ wire „Installation of hanging bolts„Pipe knockout hole Using attached installation pattern„Installation of remote control Sold separately „Installation of indoor unitInstallation Manual There is ceiling material„Refrigerant Piping 4 REFRIGERANT PIPING AND EVACUATING„Pipe size „Permissible Piping Length and Height DifferenceTightening connection „EvacuationRefrigerant amount to be added Piping with outdoor unitREQUIREMENT Thermal insulation processUnder Ceiling Type „Piping/Heat insulating material 5 DRAIN PIPING WORK„Drain up Under Ceiling Type„Thermal insulating process „Connection of drain hose„Connection of drain pipe Under Ceiling TypeRemote control wiring 6 ELECTRICAL CONNECTIONWiring Under Ceiling TypeUnder Ceiling Type REQUIREMENT „Wire connectionUnder Ceiling Type Connected at upside Connected at backsideUnder Ceiling Type 19-EN„Remote Control Wiring „System interconnection Wires and Ground Wire„Wiring Diagram Single system7 APPLICABLE CONTROLS „Changing applicable control settingProcedure Procedure„Using wireless remote control „Installation to high ceiling1 → 2 → 3 → 4 → 5 → Procedure„To secure better effect of heating „Filter sign setting„Group control Procedure exampleProcedure ProcedureProcedure ProcedureProcedure ProcedureProcedure ProcedureUnder Ceiling Type „Remote control switch monitoring functionInstallation Manual 2, 4 1,5 8 TEST RUN„Before test run „Execute a test runProcedure Wireless remote controlProcedure Procedure„Confirmation of error history 9 TROUBLESHOOTING„Confirmation and check Procedure30-EN „Check codes and parts to be checkedUnder Ceiling Type 31-EN Under Ceiling Type32-EN Under Ceiling TypeEH99864801