Ø12.7 mm
50 to 62 (5.0 to 6.2 kgf•m)
Ø9.52 mm
33 to 42 (3.3 to 4.2 kgf•m)
Ø6.35 mm
Tightening torque
14 to 18 (1.4 to 1.8 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 tighten.

•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.Prevent 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.

– 65 –

Page 64 Page 66
Page 65
Image 65
Toshiba RAS-10SAVP-E, RAS-B13SKVP-E, RAS-B10SKVP-E Tightening Connection, Use a vacuum pump, To secure To tighten
Page 64 Page 66

RAS-10SAVP-E, RAS-B10SKVP-E, RAS-B13SKVP-E specifications

Toshiba has established itself as a leader in the HVAC market, known for its innovative technologies and reliable performance. Among its range of air conditioning units, the Toshiba RAS-B10SKVP-E, RAS-10SAVP-E, and RAS-B13SKVP-E models stand out for their efficiency and advanced features.

The Toshiba RAS-B10SKVP-E is designed for optimal cooling and heating efficiency, making it an ideal choice for small to medium-sized rooms. One of its main features is the Super Hi-M-PAM inverter technology, which enhances energy savings by continuously adjusting the compressor speed to match the cooling demand. This results in lower energy consumption while maintaining a stable temperature. Additionally, the unit boasts a 4-in-1 operation mode that allows users to select cooling, heating, dehumidification, or ventilating modes, ensuring maximum comfort at all times.

Similarly, the RAS-10SAVP-E model incorporates advanced features such as an eco-friendly refrigerant, R32, which has a lower Global Warming Potential (GWP) compared to traditional refrigerants. This model is equipped with a high-efficiency filter that captures dust and allergens, ensuring cleaner air quality. The sleek design allows for easy integration into various interior styles, while its quiet operation makes it a preferred choice for residential environments.

The RAS-B13SKVP-E model takes performance to the next level with a robust cooling capacity, designed for larger spaces. This model utilizes Toshiba's unique DC Hybrid Inverter technology, which not only enhances cooling efficiency but also facilitates faster temperature control. A notable characteristic of this unit is its wide-angle air distribution system, which allows for even airflow throughout the room, enhancing comfort.

In addition to these features, all three models are equipped with smart controls that enable users to operate their air conditioning systems remotely via mobile devices. This connectivity adds convenience and ensures that users can manage their indoor climate at their fingertips. They also come with user-friendly interfaces and programmable timers, allowing for personalized comfort settings.

In conclusion, the Toshiba RAS-B10SKVP-E, RAS-10SAVP-E, and RAS-B13SKVP-E air conditioning units combine energy efficiency, innovative technology, and user-friendly features to deliver exceptional indoor comfort. With their advanced technologies, these models are ideal choices for anyone seeking reliable and effective climate control solutions.
Top Page Image Contents