Toshiba RAV-SM1403AT-E1 Safety During Installation/Servicing, Refrigerant Piping Installation

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6. REFRIGERANT R410A

This air conditioner adopts the new refrigerant HFC (R410A) which does not damage the ozone layer.

The working pressure of the new refrigerant R410A is 1.6 times higher than conventional refrigerant (R22). The refrigerating oil is also changed in accordance with change of refrigerant, so be careful that water, dust, and existing refrigerant or refrigerating oil are not entered in the refrigerant cycle of the air conditioner using the new refrigerant during installation work or servicing time.

The next section describes the precautions for air conditioner using the new refrigerant.

Conforming to contents of the next section together with the general cautions included in this manual, perform the correct and safe work.

6-1. Safety During Installation/Servicing

As R410A’s pressure is about 1.6 times higher than that of R22, improper installation/servicing may cause a serious trouble. By using tools and materials exclusive for R410A, it is necessary to carry out installation/servicing safely while taking the following precautions into consideration.

1.Never use refrigerant other than R410A in an air conditioner which is designed to operate with R410A.

If other refrigerant than R410A is mixed, pressure in the refrigeration cycle becomes abnormally high, and it may cause personal injury, etc. by a rupture.

2.Confirm the used refrigerant name, and use tools and materials exclusive for the refrigerant R410A.

The refrigerant name R410A is indicated on the visible place of the outdoor unit of the air conditioner using R410A as refrigerant.

To prevent mischarging, the diameter of the service port differs from that of R22.

3.If a refrigeration gas leakage occurs during installation/servicing, be sure to ventilate fully.

If the refrigerant gas comes into contact with fire, a poisonous gas may occur.

4.When installing or removing an air conditioner, do not allow air or moisture to remain in the refrigeration cycle.

Otherwise, pressure in the refrigeration cycle may become abnormally high so that a rupture or personal injury may be caused.

5.After completion of installation work, check to make sure that there is no refrigeration gas leakage.

If the refrigerant gas leaks into the room, coming into contact with fire in the fan-driven heater, space heater, etc., a poisonous gas may occur.

6.When an air conditioning system charged with a large volume of refrigerant is installed in a small room, it is necessary to exercise care so that, even when refrigerant leaks, its concentration does not exceed the marginal level.

If the refrigerant gas leakage occurs and its concentration exceeds the marginal level, an oxygen starvation accident may result.

7.Be sure to carry out installation or removal according to the installation manual.

Improper installation may cause refrigeration trouble, water leakage, electric shock, fire, etc.

8.Unauthorized modifications to the air conditioner may be dangerous. If a breakdown occurs please call a qualified air conditioner technician or electrician.

Improper repair may result in water leakage, electric shock and fire, etc.

6-2. Refrigerant Piping Installation

6-2-1. Piping Materials and Joints Used

For the refrigerant piping installation, copper pipes and joints are mainly used.

Copper pipes and joints suitable for the refrigerant must be chosen and installed.

Furthermore, it is necessary to use clean copper pipes and joints whose interior surfaces are less affected by contaminants.

1.Copper Pipes

It is necessary to use seamless copper pipes which are made of either copper or copper alloy and it is desirable that the amount of residual oil is less than 40 mg/10 m.

Do not use copper pipes having a collapsed, deformed or discolored portion (especially on the interior surface).

Otherwise, the expansion valve or capillary tube may become blocked with contaminants.

As an air conditioner using R410A incurs pres- sure higher than when using R22, it is necessary to choose adequate materials.

Thicknesses of copper pipes used with R410A are as shown in Table 6-2-1. Never use copper pipes thinner than 0.8mm even when it is available on the market.

NOTE

Refer to the “6-6. Instructions for Re-use Piping of R22 or R407C”.

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Contents RAV-SM1103AT-E1 RAV-SM1403AT-E1 Contents Original instruction Explanation of illustrated marks Explanation of indicationsWork undertaken Protective gear worn Indication ExplanationDescription Confirmation of warning label on the main unitPrecaution for Safety Undertake the work Refrigerant used by this air conditioner is the R410A Properly Relocation Explanations given to userModel names with a rating of 12 kW and below outdoor units DI seriesPipe Materials Safety Caution Concerned to New RefrigerantCopper pipe Piping Flare nutGeneral tools Conventional tools can be used ToolsDigital Inverter Outdoor UnitCapacity variation ratio according to temperature Operation Characteristic CurveOperation Characteristic Curve Digital Inverter Cooling HeatingRAV-SM1103AT-E1, RAV-SM1403AT-E1 Construction Views External ViewsModel RBC RBC-TWP30E2, RBC-TWP50E2 Simultaneous TwinOutdoor unit RAV-SM1103AT-E1 Wiring Diagram Specifications of Electric Parts Refrigerant Piping Installation Safety During Installation/ServicingPiping Materials and Joints Used Copper PipesFlare Processing Procedures and Precautions JointsProcessing of Piping Materials Flare and flare nut dimensions for R410A 3 Dimensions related to flare processing for R410A / R22Flare and flare nut dimensions for R22 R410A R22 R410A, R22 Clutch type Wing nut typeFlare Connecting Procedures and Precautions Nm kgfmWrenches available on the market Required Tools Recharging of RefrigerantFlux Reason why flux is necessary Low temperature brazing fillerBrazing of Pipes Materials for Brazing Silver brazing fillerTypes of flux Characteristics required for fluxPiping materials for brazing and used brazing filler/flux BrazingBasic Conditions Needed to Reuse the Existing Pipe Instructions for Re-use Piping of R22 or R407CRestricted Items to Use the Existing Pipes Branching Pipe for Simultaneous Operation SystemYES Final Installation ChecksReference outside diameter Wall thickness Handling of Existing PipeCN806 Outline of Main Controls Pulse Modulating Valve PMV control Discharge temperature release controlOutdoor fan control Current release controlCooling fan control Allocations of fan tap revolutions rpmHeating fan control Coil heating controlNormal time Defective to sensorCurrent release value shift control Defrost controlCurrent release control value At normal to At error to Zone High-pressure switchControl of compressor case thermo Start of heating operationBefore troubleshooting Summary of TroubleshootingTroubleshooting procedure Wired remote controller typeTrouble Confirmation of lamp display Wireless remote controller typeOutline of judgment TroubleshootingLamp indication Check code Cause of trouble occurrence Others Other than Check CodePushing Test button returns the status to the usual display ContentsIndication Check Code List OutdoorCentral control indication Remote controller TCJ Error mode detected by indoor unitAfter Error mode detected by outdoor unitAfter Series Operation of diagnostic function Judgment and measures Contents Error Display Display of the latest error Diagnostic Procedure for Each Check Code Outdoor UnitYES Case thermostat operation E04F06 Heat exchanger temp. sensor TE errorF12 Suction temp. sensor TS error F13 Heat sink temp. sensor TH errorF15 Miswiring of heat exchanger sensor TE, TS H02 Compressor lock H01 Compressor break downL10 P03 Discharge temp. errorPower supply error Vdc, High pressure protective operation High pressure SW system errorP15 Gas leak detection P07 Heat sink overheat errorWay valve reversal error Check Code P19 Outdoor Check and troubleshooting LED displayOpen valve fully Single operation check for outdoor fan MethodPosition detection circuit error TA, TC, TCJ, TE, TS, to sensors Representative value Temperature sensorTD, TL sensors Representative value TA, TC, TCJ, TE, TS, to sensorsTable Inspection of outdoor unit main parts Parts name Checking procedureResistance value PositionContents Calling of Error HistoryProcedure Group Control OperationBy feed unit Automatic address judgment „ Indoor unit power-ON sequenceInitial communication Usual regular CommunicationService switch SW800, SW801 operations Refrigerant recovery controlOutdoor Unit Service switch setting Case to return the setting to one at shipment from factory LED display switching Display switching list Error display ON, OFF, Slow flashing Once/second Open PMV Electronic expansion valve fully Applicable Control of Outdoor unit Address Setup Procedure Address SetupAddress Setup & Group Control System ConfigurationTerminology Only turning on source power supply Automatic completion Automatic Address Example from Unset Address No miswiringStandard One outdoor unit Single Twin Wiring diagram Remote Controller WiringAddress Setup Manual setting from remote controller Single system Simultaneous twin systemButton Confirmation of Indoor Unit No. PositionTo know the position of indoor unit body by address Maintenance/Check listSetting the jumper wires Installing the P.C. boardRemoving the P.C. board Exchange of Compressor Exchanging Procedure of Compressor OutlineDetachments Discharge port Part name Procedure Remarks Perform works of 1 of c, 2 of f Propeller fan When reconnecting the lead wires to Pulse Modulating Product Exploded Views and Parts List RAV Inverter assembly Toshiba Carrier Corporation

RAV-SM1403AT-E1 specifications

The Toshiba RAV-SM1403AT-E1 is a state-of-the-art air conditioning system designed for residential and commercial applications. Its advanced features and cutting-edge technology ensure optimal cooling and heating performance, making it a popular choice among consumers and businesses alike.

One of the standout characteristics of the RAV-SM1403AT-E1 is its energy efficiency. This model is equipped with a highly efficient inverter compressor that adjusts its output based on the cooling load required, which results in significant energy savings compared to traditional air conditioning systems. Its impressive Seasonal Energy Efficiency Ratio (SEER) ratings highlight its ability to provide effective climate control while minimizing electricity consumption.

The RAV-SM1403AT-E1 utilizes Toshiba’s innovative DC inverter technology, which allows for smoother and quieter operation. This means that users can enjoy a comfortable indoor environment without the disruptive noise often associated with conventional models. In addition to its quiet operation, this air conditioner also features an advanced air filtration system that helps to maintain indoor air quality by removing dust, allergens, and other pollutants.

Another major feature of this system is its versatility in installation. The RAV-SM1403AT-E1 can be installed in various configurations, allowing it to adapt to different spaces and design requirements. It supports multiple indoor units that can be connected to a single outdoor unit, providing flexibility for cooling or heating multiple areas simultaneously.

Smart technology is also integrated into the RAV-SM1403AT-E1. Users can take advantage of remote control options, including Wi-Fi capabilities that allow for convenient management of the air conditioning system via smartphones or tablets. This level of control ensures that users can adjust settings even when they are not present, increasing comfort and efficiency.

The build quality of the Toshiba RAV-SM1403AT-E1 reflects its durability and reliability. Designed to withstand varying environmental conditions, it includes corrosion-resistant features that extend the lifespan of the unit, making it a practical investment for both home and commercial use.

In summary, the Toshiba RAV-SM1403AT-E1 combines energy efficiency, advanced technology, and flexible installation options, making it an excellent choice for those seeking a high-performance air conditioning solution. With its innovative features and commitment to sustainability, this model stands out in the competitive HVAC market.
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