Toshiba RAM-SM800AT-E Refrigerant Piping, Requirement, Tightening of Connecting Part

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4 REFRIGERANT PIPING

Tightening of Connecting Part

 

(Unit: N•m)

 

 

Outer dia. of copper pipe

Tightening torque

 

 

6.35mm (diam.)

14 to 18 (1.4 to 1.8kgf•m)

 

 

9.52mm (diam.)

33 to 42 (3.3 to 4.2kgf•m)

 

 

12.7mm (diam.)

50 to 62 (5.0 to 6.2kgf•m)

 

 

15.9mm (diam.)

63 to 77 (6.3 to 7.7kgf•m)

 

 

Flare at

indoor unit side

Flare at

outdoor unit side

Align the centers of the connecting pipes and tighten the flare nut strong as far as possible with your fingers.

Then fix the nut with a spanner and tighten it with torque wrench as shown in the figure.

Half union or packed valve

Flare nut

Externally

 

Internally

threaded side

 

threaded side

Fix with spanner.

Tighten with torque wrench.

As shown in the figure, be sure to use a double spanner to loosen or tighten the flare nut of the valve at gas side. If using a single spanner, the nut cannot be tightened with necessary tightening torque.

On the contrary, use a single spanner to loosen or tighten the flare nut of the valve at liquid side.

REQUIREMENT

1.Do not put the spanner on the cap. The valve may be broken.

2.If applying excessive torque, the nut may be broken according to some installation conditions.

After the installation work, be sure to check gas leak of connecting part of the pipes with nitrogen.

Cover

Pressure of R410A is higher than that of R22 (Approx. 1.6 times). Therefore, using a torque wrench, tighten the flare pipe connecting sections which connect the indoor/outdoor units at the speci- fied tightening torque. Incomplete connections may cause not only a gas leak, but also a trouble of the refrigeration cycle.

Do not apply refrigerating machine oil to the flared surface.

Cover

Cap

Piping valve

Loosened

Tightened

 

Flare nut

SM800 type valve at gas side

9

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Contents Split Type Way Air Discharge Cassette Type Installation Manual Outdoor Unit --------- RAV-SM800AT-E/RAV-SM800AT-EPrecautions for Safety New Refrigerant Air Conditioner InstallationTo Disconnect the Appliance from Main Power Supply Connect the connecting cable correctlyInappropriate grounding may cause electric shock Accessory and Refrigerant Selection of InstallationAccessory and Installation Parts Before installationInstallation Place Necessary Space for InstallationObstacle at rear side Upper side is free Obstacle at front side Upper side is freeSelection of Installation Installation of Outdoor UnitOptional Installation Parts Local Procure Refrigerant Piping ConnectionPiping connection Knockout procedure How to remove the front panelKnockout of Pipe Cover Refrigerant Piping Pipe Forming/End PositioningFlaring size a Unit mm FlaringTightening of Connecting Part Refrigerant PipingRequirement Evacuating Air PurgeVacuum pump Evacuating Open CloseSM560AT-E How to remove the valve cover How to wireStripping length power cord and connecting cable Electrical WorkFinal Installation Checks Check and Test OperationSelf-Diagnosis by LED Indication Changes in the product and components New tools for R410AAccessories Precautions for SafetyRemote controller Screws two pcs Standard 4-way cassette panel optional partsRAV-SM560UT-E RAV-SM800UT-E Parts Name Indoor unitOutdoor unit Parts Name of Remote Controller Display sectionOperation section Turn on the main power switch and/or the leakage breaker Correct UsagePreparation Stop StartPush button How to set up the wind direction How to start swingingHow to stop swinging Heat operationTimer Operation Timer operationCancel of timer operation Maintenance Hints for Economical OperationCleaning of panel and air filter Clean the panel and air filter with waterCleaning of Air Filters If you do not plan to use the unit for more than 1 monthCleaning of discharge flap Be careful to the direction of the flap when mountingAIR Conditioner Operations and Performance RE-INSTALLATION Do not install the air conditioner in the following placesTroubles and Causes Be careful with noise or vibrationsInoperative Page Accessory parts and Parts to be procured locally Separate sold partsPrecautions for Safety Precautions for Safety Selection of Installation Place Installation spaceAvoid installing in the following places Selection of Installation Place Selection of installation place Discharge directionAdvice Height list of ceiling possible to be installedExternal view Installation of hanging bolt Installation of ceiling opening and hanging boltInstallation of ceiling panel Sold separately Drain Piping Work Piping/Heat insulating materialFlexible hose Adhesive inhibitedConnection procedure Drain upCheck the draining Perform heat insulatingPermissible Piping Length and Heat Flaring dia meter size a Unit mmTightening connection Tightening torque of flare pipe connectionsUse a vacuum pump Open the valve fullyGas leak check Thermal insulation processPacked valve handling precautions For RAV-SM800AT-E modelSM800 type valve at gas side Be sure to connect earth wire. Grounding work Remote controller wiringThermal insulation to cabling connecting port Electrical WorkCable connection Cabling on the ceiling panelRemote Controller Cabling Cabling diagramCabling How to execute a test run Case of wired remote controllerTest RUN Before test runTroubleshooting Confirmation of error historyConfirmation and check Accessories RAV-SM560BT-E RAV-SM800BT-E Connecting duct Operation mode display Fan mode displayTest run display Fan mode button Button Unit and Auto flap button No function Operation lampFilter UP/DOWN button Correct Usage Automatic Operation Auto Changeover Clear of timer operation Do not open doors and windows more often than necessary Cleaning of Return grille Clean the Return grilles with waterAIR Conditioner Operations and Performance RE-INSTALLATION Air flow changes without FAN button set to Auto mode Auto RAV-SM560BT-E RAV-SM800BT-E Precautions for Safety Precautions for Safety Selection of installation place Installation of Indoor Unit Installation procedureDimension Hanging down of indoor unitInstallation of Indoor Unit Restriction to installationConcealed duct type Ledge ceiling concealed duct typeStatic pressure characteristics of each model AIR Ducting WorkConnecting method of the duct AIR Ducting WorkPoints at installation work General cautionsMounting of remote controller Hanging of indoor unitMounting of filter and canvas for suction port For referencePiping material Piping and cautionsConnection of the drain hose 13.2 13.0 12.7 16.6 16.2 15.9 19.7 19.4 SM800 type valve at gas side Electrical Work INSTALLATION/SERVICING Tools ToolsRemote controller RAV-SM560KRT-E RAV-SM800KRT-E Name and Functions of Indicators and Controls Display panelTemporary button Name and Operations of Indicators and Controls Set up temp. button Central indicationLouver operation button ON/OFF buttonTurn on the power switch When restarting the operation after stopPush ON/OFF button CoolingDRY Operation START/STOP buttonSTART/STOP button Adjusting AIR Flow Direction HOW the AIR Conditioner WorksAutomatic operation Air filter reset Cleaning of indoor unit and remote controllerTemporary Operation Temporary operationCleaning the air filter Clean the air filters as often as possibleCheck before operation Open the air inlet grilleHeating operation characteristics Preheating operation Cleaning the air inlet grilleMinute protection function Warm air controlProblems and Causes RecheckInoperative Does not cool well or heat wellWired remote Precautions for Safety Precautions for Safety Installation Procedure Installation Diagram of Indoor UnitMounting the Installation Plate When the installation plate is directly mounted on the wallGood location Bad location Piping and Drain Hose Installation Case of right-side exitCase of downward pipe exit Piping via left-hand connectionDrain Piping Work DrainagePermissible Piping Length and Head Evacuating 100 For RAV-SM560AT-E model101 Additional refrigerantAdd Only R410A Refrigerant to These Units Heat insulation Wiring between units Wiring connections102 Installation of Remote Controllers Precautions103 Flush wall mountingImproving System Efficiency Options104 Final Installation Checks 105Environmental Issues Product maintenanceEnvironment 106

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