6-6-6. Handling of Existing Pipe

When using the existing pipe, carefully check it for the following:

•Wall thickness (within the specified range)

•Scratches and dents

•Water, oil, dirt, or dust in the pipe

•Flare looseness and leakage from welds

•Deterioration of copper pipe and heat insulator

Cautions for using existing pipe

•Do not reuse the flare to prevent gas leak.

Replace it with the supplied flare nut and then process it to a flare.

•Blow nitrogen gas or use an appropriate means to keep the inside of the pipe clean.

If discolored oil or much residue is discharged, wash the pipe.

•Check welds, if any, on the pipe for gas leak.

When the pipe corresponds to any of the follow- ing, do not use it. Install a new pipe instead.

•The pipe has been open (disconnected from indoor unit or outdoor unit) for a long period.

•The pipe has been connected to an outdoor unit that does not use refrigerant R22, R410A or R407C.

•The existing pipe must have a wall thickness equal to or larger than the following thickness.

Reference outside diameter

Wall thickness

(mm)

(mm)

 

 

Ø9.5

0.8

 

 

Ø15.9

1.0

 

 

Ø19.1

1.0

 

 

•Never use any pipe with a wall thickness less than these thicknesses due to insufficient pressure capacity.

•To use an existing Ø19.1 mm pipe, set bit 3 of SW802 (switch for existing pipe) on the P.C. board of the outdoor unit to ON. In this case, the heating performance may be reduced depending on the outside air temperature and room temperature.

SW802

When shipped from factory

When using existing pipe

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

 

2

 

 

ON

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6-6-7. Recovery Method of Refrigerant for RAV-SP1104AT-E, RAV-SP1404AT-E

•Use the refrigerant recovery switch SW801 on the P.C. board of the outdoor unit to recover refriger- ant when the indoor unit or outdoor unit is moved.

Operation method

1.Turn on the power of the air conditioner.

2.Select the FAN mode for indoor unit operation with the remote controller.

3.Set SW804 on the P.C. board of the outdoor unit to all OFF, and then push SW801 for one second or more.

The air conditioner enters the forced cooling mode for up to 10 minutes.

Operation or handling the valve to recover refrigerant during this time period.

4.Upon completion of refrigerant recovery, close the valve and push SW801 for at least one second to stop operation.

5.Turn off the power.

Refrigerant recovery

P.C. board

 

 

switch SW801

 

 

Optional connector

 

 

CN610

 

 

Special operation

 

 

select switch SW804

 

 

 

4

 

 

3

 

Existing pipe switch

ON 1 2

3 4

SW802

 

ON 1 2

 

 

DANGER

Take care for an electric shock because the P.C.board is electrified.

– 42 –

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Toshiba RAV-SP1404ATZ-E Handling of Existing Pipe, Operation method, Reference outside diameter Wall thickness, SW802
Page 41 Page 43

RAV-SP1104ATZG-E, RAV-SP1104ATZ-E, RAV-SP1404ATZ-E, RAV-SM804UT-E, RAV-SP1404AT-E specifications

Toshiba has long been a notable player in the air conditioning market, with a range of products designed to deliver effective cooling and heating solutions. Among its recent offerings are the RAV-SP1104AT-E, RAV-SM1404UT-E, RAV-SM1104UT-E, RAV-SP1104ATZ-E, and RAV-SP1404ATZ-E models. Each of these models is engineered for efficiency, performance, and user convenience.

The RAV-SP1104AT-E is designed for residential and commercial spaces alike, featuring advanced inverter technology. This model operates efficiently by adjusting compressor speed according to the required cooling load, resulting in reduced energy consumption and optimal performance. With a cooling capacity of 11 kW, it is suitable for medium to large spaces.

The RAV-SM1404UT-E model builds on this efficiency with enhanced features aimed at maximizing comfort. It includes a built-in Wi-Fi capability, allowing users to control the system remotely through a mobile app. This model boasts a high-energy efficiency rating, which translates into lower operating costs and a smaller environmental footprint.

Similarly, the RAV-SM1104UT-E emphasizes versatility and adaptability, adept at handling various climatic conditions. In addition to its robust cooling performance, it supports heating capabilities, making it an excellent choice for year-round use. The unit's quiet operation ensures comfort without the nuisance of disruptive noise, making it ideal for both residential and commercial settings.

The RAV-SP1104ATZ-E and RAV-SP1404ATZ-E models represent the pinnacle of Toshiba's innovation in multi-split systems. Both models utilize advanced refrigerant technology, ensuring rapid cooling and heating while minimizing energy loss. The RAV-SP1104ATZ-E offers a balanced performance with a focus on high efficiency, while the RAV-SP1404ATZ-E provides greater capacity, ideal for larger establishments requiring substantial climate control.

All these units feature Toshiba's cutting-edge technologies, including advanced filtration systems that improve indoor air quality by capturing dust, allergens, and other particulates. The robust design of these models ensures durability and longevity, making them a worthwhile investment for any property owner.

In summary, Toshiba’s RAV-SP1104AT-E, RAV-SM1404UT-E, RAV-SM1104UT-E, RAV-SP1104ATZ-E, and RAV-SP1404ATZ-E models reflect the brand's commitment to innovation and energy efficiency. These air conditioning solutions cater to a variety of needs while ensuring comfort, reduced environmental impact, and user-friendly operation.
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