Ø12.7 mm
50 to 62 (5.0 to 6.2 kgf•m)
Ø6.35 mm
Ø9.52 mm
Tightening torque
14 to 18 (1.4 to 1.8 kgf•m)
33 to 42 (3.3 to 4.2 kgf•m)
Outer dia. of copper pipe
• Tightening torque for connection of flare pipe
The pressure of R410A is higher than R22. (Approx. 1.6 times.) Therefore securely tighten the flare pipes which connect the outdoor unit and the indoor unit with the specified tightening torque using a torque wrench.
If any flare pipe is
Flare at
incorrectly connected,indoor unit
it may cause not onlyside a gas leakage but also trouble in the
refrigeration cycle.
Flare at
outdoor unit side
Fig. 10-4-8
10-4-4. Evacuating
After the piping has been connected to the indoor unit, perform the air purge.
AIR PURGE
Evacuate the air in the connecting pipes and in the indoor unit using a vacuum pump.
Do not use the refrigerant in the outdoor unit. For details, see the vacuum pump manual.
Fig. 10-4-7
CAUTION

Tightening Connection

Align the centers of the connecting pipes and tighten the flare nut as much as possible with your fingers. Then tighten the nut with a wrench and torque wrench as shown in the figure.

Half union

Flare nut

Externally

Internally

threaded side

threaded side

Use a wrench

Use a torque wrench

to secure.

to secure.

•Do not apply excessive force. Otherwise, the nut may break.

(Unit : N·m)

Use a vacuum pump

Be sure to use a vacuum pump with counter-flow prevention function so that oil inside the pump does not flow back into the air conditioner pipes when the pump stops. (If oil inside the vacuum pump enters into the air conditioner circuit which uses R410A, trouble with the refrigeration system may develop.)

1.Connect the charge hose from the manifold valve to the service port of the gas side packed valve.

2.Connect the charge hose to the port of the vacuum pump.

3.Open fully the low pressure side handle of the gauge manifold valve.

4.Operate the vacuum pump to begin evacuating. Perform evacuating for about 15 minutes if the piping length is 20 meters (15 minutes for 20 meters) (assuming a pump capacity of 27 liters per minute).

Confirm that the compound pressure gauge reading is –101 kPa (–76 cmHg).

5.Close the low pressure valve handle of gauge manifold.

6.Open fully the valve stem of the packed valves (both sides of Gas and Liquid).

7.Remove the charging hose from the service port.

8.Securely tighten the caps on the packed valves.

Compound Pressure gauge pressure

gauge

-101kPa (-76cmHg)

Handle Lo

Charge hose (For R410A only)

Connecting pipe

Manifold valve

Handle Hi

(Keep full closed)

Charge hose (For R410A only)

Vacuum pump adapter for counter-flow prevention

(For R410A only)

Vacuum pump

Packed valve at liquid side Packed valve at gas side

Service port

(Valve core (Setting pin))

Fig. 10-4-9

CAUTION

•IMPORTANT POINTS FOR PIPING WORK

1.Keep dust and moisture from entering the pipes.

2.Tighten connections carefully (between pipes and unit).

3.Evacuate the air in the connecting pipes using a VACUUM PUMP.

4.Check for gas leaks at all connections.

– 57 –

Page 56 Page 58
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Image 57
Toshiba RAS-13GAVP-E, RAS-B16GKVP-E, RAS-B13GKVP-E, RAS-B10GKVP-E, RAS-16GAVP-E Tightening Connection, Use a vacuum pump
Page 56 Page 58

RAS-10GAVP-E, RAS-16GAVP-E, RAS-13GAVP-E, RAS-B10GKVP-E, RAS-B13GKVP-E specifications

Toshiba has long been a renowned name in the world of air conditioning, delivering reliable and energy-efficient solutions that meet the demands of modern living. Among their innovative product line, the Toshiba RAS-B13GKVP-E, RAS-10GAVP-E, RAS-B10GKVP-E, RAS-16GKVP-E, and RAS-13GAVP-E stand out for their advanced features and cutting-edge technologies.

The RAS-B13GKVP-E is a powerful air conditioning unit designed for medium-sized rooms. It boasts a robust cooling capacity, ensuring comfort even during the hottest days. One of its standout features is the inverter technology, which optimizes energy consumption by adjusting the compressor speed according to the temperature, resulting in significant energy savings.

Next, the RAS-10GAVP-E is tailored for smaller spaces, offering efficient cooling and heating capabilities. It comes with an easy-to-use remote control and a user-friendly interface, allowing for effortless operation. The model also incorporates a quiet operation feature, making it suitable for bedrooms and study areas where noise can be a distraction.

The RAS-B10GKVP-E strikes a balance between size and efficiency, ideal for compact living spaces. Its dual cooling and heating function ensures year-round climate control. This model further enhances indoor air quality with its built-in filters, which capture dust and allergens, creating a healthier environment for occupants.

For larger areas, the RAS-16GKVP-E provides an impressive cooling capacity combined with turbo mode functionality. This feature enables rapid cooling of spaces during sweltering summer days. Its sleek design and compact form factor allow for easy installation, making this unit a popular choice for both residential and commercial applications.

Lastly, the RAS-13GAVP-E excels in energy efficiency with its eco-friendly refrigerant options. It is equipped with a smart control system that allows users to monitor and adjust settings remotely, adding convenience and flexibility to its operation. This model is particularly beneficial for users looking to minimize their carbon footprint while enjoying the comfort of climate control.

Overall, Toshiba's lineup of air conditioning units, including RAS-B13GKVP-E, RAS-10GAVP-E, RAS-B10GKVP-E, RAS-16GKVP-E, and RAS-13GAVP-E, promises high performance, energy efficiency, and advanced technology. These features affirm Toshiba's commitment to creating a comfortable indoor environment while ensuring sustainability and user satisfaction.
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