Toshiba RAV-SP560AT-E, RAV-SP1400UT-E, RAV-SP1100AT-E, RAV-SP800AT-E service manual Valve at gas side

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4 REFRIGERANT PIPING

Tightening of Connecting Part

 

(Unit: N•m)

 

 

Outer dia. of copper pipe

Tightening torque

 

 

6.4 mm (diam.)

14 to 18 (1.4 to 1.8 kgf•m)

 

 

9.5 mm (diam.)

33 to 42 (3.3 to 4.2 kgf•m)

 

 

12.7 mm (diam.)

50 to 62 (5.0 to 6.2 kgf•m)

 

 

15.9 mm (diam.)

68 to 82 (6.8 to 8.2 kgf•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

Valve at gas side

57

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Contents Split Type Adoption of NEW Refrigerant Indoor Unit 4-Way Air Discharge Cassette Type New Refrigerant Air Conditioner Installation Precautions for SafetyTo Disconnect the Appliance from Main Power Supply Accessory and Installation Parts Refrigerant Piping Accessory and RefrigerantBefore installation Selection of InstallationNecessary Space for Installation Installation PlaceObstacle at rear side Upper side is free Obstacle at front side Upper side is freeInstallation of Outdoor Unit Refrigerant Piping Connection Optional Installation Parts Local ProcureFor Reference Piping connectionHow to remove the front panel Knockout procedureKnockout of Pipe Cover Pipe Forming/End Positioning Refrigerant PipingFlaring size a Unit mm Projection margin in flaring B Unit mm FlaringDo not apply refrigerating machine oil to the flared surface Tightening of Connecting PartAir Purge EvacuatingVacuum pump Evacuating How to open the valveHow to wire SM560AT-E How to remove the valve coverStripping length power cord and connecting cable Electrical WorkCheck and Test Operation Final Installation ChecksSelf-Diagnosis by LED Indication New tools for R410A Changes in the product and componentsPrecautions for Safety Accessory and Installation Parts SP1100AT-E, SP1400AT-E SP1100AT-E, SP1400AT-E onlyLength of refrigerant pipe SM1100AT-E, SM1400AT-E Single unitIn installation Moreor Liquid side Gas side Outer diameter Thickness Ø9.5 Ø15.9 Rigid Clutch type Projection margin in flaring B Unit mmValve at gas side Evacuating How to open the valve Model RAV SM1400AT-E Useful Functions Final Installation Checks

RAV-SP1100UT-E, RAV-SP800AT-E, RAV-SP1100AT-E, RAV-SP1400UT-E, RAV-SP560AT-E specifications

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