Toshiba RAV-SM1403AT-E1 Instructions for Re-use Piping of R22 or R407C, Curing of Pipes

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6-6. Instructions for Re-use Piping of R22 or R407C

Instruction of Works:

The existing R22 and R407C piping can be reused for our digital inverter R410A products installations.

NOTE)

Confirmation of existence of scratch or dent of the former pipes to be applied and also confirmation of reliability of the pipe strength are conventionally referred to the local site.

If the definite conditions can be cleared,

it is possible to update the existing R22 and R407C pipes to those for R410A models.

6-6-1. Basic Conditions Needed to Reuse the Existing Pipe

Check and observe three conditions of the refrigerant piping works.

1.

Dry

(There is no moisture inside of the pipes.)

2.

Clean

(There is no dust inside of the pipes.)

3.

Tight

(There is no refrigerant leak.)

6-6-2. Restricted Items to Use the Existing Pipes

In the following cases, the existing pipes cannot be reused as they are. Clean the existing pipes or ex- change them with new pipes.

1.When a scratch or dent is heavy, be sure to use the new pipes for the works.

2.When the thickness of the existing pipe is thinner than the specified “Pipe diameter and thickness” be sure to use the new pipes for the works.

The operating pressure of R410A is high

(1.6 times of R22 and R407C). If there is a scratch or dent on the pipe or thinner pipe is used, the pressure strength is poor and may cause break- age of the pipe at the worst.

Pipe diameter and thickness (mm)

Pipe outer diameter

Ø6.4

Ø9.5

Ø12.7

Ø15.9

Ø19.0

 

 

 

 

 

 

 

 

R410A

 

 

 

 

 

Thickness

 

0.8

0.8

0.8

1.0

1.0

R22

 

 

 

 

 

 

(R407C)

 

 

 

 

 

 

 

 

 

 

 

 

In case that the pipe diameter is Ø12.7 mm or less and the thickness is less than 0.7 mm, be sure to use the new pipes for works.

3.The pipes are left as coming out or gas leaks. (Poor refrigerant)

There is possibility that rain water or air including moisture enters in the pipe.

4.Refrigerant recovery is impossible.

(Refrigerant recovery by the pump-down operation on the existing air conditioner)

There is possibility that a large quantity of poor oil or moisture remains inside of the pipe.

5.A dryer on the market is attached to the existing pipes.

There is possibility that copper green rust generated.

6.Check the oil when the existing air conditioner was removed after refrigerant had been recovered.

In this case, if the oil is judged as clearly different compared with normal oil

The refrigerator oil is copper rust green :

There is possibility that moisture is mixed with the oil and rust generates inside of the pipe.

There is discolored oil, a large quantity of the remains, or bad smell.

A large quantity of sparkle remained wear-out powder is observed in the refrigerator oil.

7.The air conditioner which compressor was ex- changed due to a faulty compressor.

When the discolored oil, a large quantity of the remains, mixture of foreign matter, or a large quantity of sparkle remained wear-out powder is observed, the cause of trouble will occur.

8.Installation and removal of the air conditioner are repeated with temporary installation by lease and etc.

9.In case that type of the refrigerator oil of the existing air conditioner is other than the following oil (Mineral oil), Suniso, Freol-S, MS (Synthetic oil), alkyl benzene (HAB, Barrel-freeze), ester series, PVE only of ether series.

Winding-insulation of the compressor may become inferior.

NOTE)

The above descriptions are results of confirmation by our company and they are views on our air conditioners, but they do not guarantee the use of the existing pipes of the air conditioner that adopted R410A in other companies.

6-6-3. Branching Pipe for Simultaneous Operation System

In the concurrent twin system, when TOSHIBA- specified branching pipe is used, it can be reused. Branching pipe model name:

RBC-TWP30E2, RBC-TWP50E2

On the existing air conditioner for simultaneous operation system (twin system), there is a case of using branch pipe that has insufficient compressive strength. In this case please change it to the branch pipe for R410A.

6-6-4. Curing of Pipes

When removing and opening the indoor unit or outdoor unit for a long time, cure the pipes as follows:

Otherwise rust may generate when moisture or foreign matter due to dewing enters in the pipes.

The rust cannot be removed by cleaning, and a new piping work is necessary.

Place position

Term

Curing manner

 

 

 

Outdoors

1 month or more

Pinching

 

 

Less than 1 month

Pinching or taping

 

 

 

Indoors

Every time

 

 

 

 

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Contents RAV-SM1103AT-E1 RAV-SM1403AT-E1 Contents Original instruction Explanation of indications Explanation of illustrated marksWork undertaken Protective gear worn Indication ExplanationConfirmation of warning label on the main unit DescriptionPrecaution for Safety Undertake the work Refrigerant used by this air conditioner is the R410A Properly Explanations given to user RelocationModel names with a rating of 12 kW and below outdoor units DI seriesSafety Caution Concerned to New Refrigerant Pipe MaterialsCopper pipe Piping Flare nutTools General tools Conventional tools can be usedOutdoor Unit Digital InverterOperation Characteristic Curve Capacity variation ratio according to temperatureOperation Characteristic Curve Digital Inverter Cooling HeatingConstruction Views External Views RAV-SM1103AT-E1, RAV-SM1403AT-E1RBC-TWP30E2, RBC-TWP50E2 Simultaneous Twin Model RBCOutdoor unit RAV-SM1103AT-E1 Wiring Diagram Specifications of Electric Parts Safety During Installation/Servicing Refrigerant Piping InstallationPiping Materials and Joints Used Copper PipesJoints Flare Processing Procedures and PrecautionsProcessing of Piping Materials 3 Dimensions related to flare processing for R410A / R22 Flare and flare nut dimensions for R410AFlare and flare nut dimensions for R22 R410A R22 R410A, R22 Clutch type Wing nut typeNm kgfm Flare Connecting Procedures and PrecautionsWrenches available on the market Recharging of Refrigerant Required ToolsLow temperature brazing filler Flux Reason why flux is necessaryBrazing of Pipes Materials for Brazing Silver brazing fillerCharacteristics required for flux Types of fluxPiping materials for brazing and used brazing filler/flux BrazingInstructions for Re-use Piping of R22 or R407C Basic Conditions Needed to Reuse the Existing PipeRestricted Items to Use the Existing Pipes Branching Pipe for Simultaneous Operation SystemFinal Installation Checks YESHandling of Existing Pipe Reference outside diameter Wall thicknessCN806 Discharge temperature release control Outline of Main Controls Pulse Modulating Valve PMV controlCurrent release control Outdoor fan controlCooling fan control Allocations of fan tap revolutions rpmCoil heating control Heating fan controlNormal time Defective to sensorDefrost control Current release value shift controlCurrent release control value High-pressure switch At normal to At error to ZoneControl of compressor case thermo Start of heating operationSummary of Troubleshooting Before troubleshootingTroubleshooting procedure Wired remote controller typeWireless remote controller type Trouble Confirmation of lamp displayTroubleshooting Outline of judgmentOthers Other than Check Code Lamp indication Check code Cause of trouble occurrenceContents Pushing Test button returns the status to the usual displayCheck Code List Outdoor IndicationCentral control indication Remote controller Error mode detected by indoor unit TCJError mode detected by outdoor unit AfterAfter Series Operation of diagnostic function Judgment and measures Contents Error Display Diagnostic Procedure for Each Check Code Outdoor Unit Display of the latest errorCase thermostat operation E04 YESHeat exchanger temp. sensor TE error F06F13 Heat sink temp. sensor TH error F12 Suction temp. sensor TS errorF15 Miswiring of heat exchanger sensor TE, TS H01 Compressor break down H02 Compressor lockP03 Discharge temp. error L10High pressure SW system error Power supply error Vdc, High pressure protective operationP07 Heat sink overheat error P15 Gas leak detectionCheck Code P19 Outdoor Check and troubleshooting LED display Way valve reversal errorOpen valve fully Method Single operation check for outdoor fanPosition detection circuit error Temperature sensor TA, TC, TCJ, TE, TS, to sensors Representative valueTD, TL sensors Representative value TA, TC, TCJ, TE, TS, to sensorsParts name Checking procedure Table Inspection of outdoor unit main partsResistance value PositionCalling of Error History ContentsProcedure Group Control Operation„ Indoor unit power-ON sequence By feed unit Automatic address judgmentInitial communication Usual regular CommunicationRefrigerant recovery control Service switch SW800, SW801 operationsOutdoor 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 Address Setup ProcedureSystem Configuration Address Setup & Group ControlTerminology Automatic Address Example from Unset Address No miswiring Only turning on source power supply Automatic completionStandard One outdoor unit Single Twin Remote Controller Wiring Wiring diagramAddress Setup Manual setting from remote controller Single system Simultaneous twin systemConfirmation of Indoor Unit No. Position ButtonMaintenance/Check list To know the position of indoor unit body by addressInstalling the P.C. board Setting the jumper wiresRemoving the P.C. board Exchanging Procedure of Compressor Outline Exchange of CompressorDetachments 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.

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