4-way Air Discharge Cassette Type

 

Unit : ft•lbs (N•m)

Outer dia. of copper pipe

Tightening torque

 

 

1/4" (6.4 mm)

10 - 13 (14 - 18)

 

 

3/8" (9.5 mm)

24 - 31 (33 - 42)

 

 

1/2" (12.7 mm)

37 - 46 (50 - 62)

 

 

5/8" (15.9 mm)

46 - 57 (63 - 77)

 

 

▼Tightening torque of flare pipe connections

Pressure of R410A is higher than that of R22.

Installation Manual

REQUIREMENT

For the tools such as charge hose, etc., use those manufactured exclusively for R410A.

Refrigerant amount to be added

For addition of the refrigerant, add refrigerant “R410A” referring to the attached Installation Manual of outdoor unit.

(Approx. 1.6 times) Therefore, using a torque wrench, tighten the flare pipe connecting sections which connect the indoor and outdoor units of the specified tightening torque.

Incorrect connections may cause not only a gas leak, but also a trouble of the refrigeration cycle.

Flare at indoor unit side

Flare at outdoor unit side

Be sure to use a scale to charge the refrigerant of specified amount.

REQUIREMENT

•

Charging an excessive or too little amount of

 

refrigerant causes a trouble of the compressor.

 

Be sure to charge the refrigerant of specified

 

amount.

•

A personnel who charged the refrigerant should

 

write down the pipe length and the added

 

refrigerant amount in the nameplate attached to the

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

Half union Flare nut

Externally

Internally

threaded side

threaded side

Use a wrench to secure.

Use a torque wrench to tighten.

REQUIREMENT

Tightening with an excessive torque may crack the nut depending on installation conditions.

Tighten the nut within the specified tightening torque.

Piping with outdoor unit

•Shape of valve differs according to the outdoor unit. For details of installation, refer to the Installation Manual of the outdoor unit.

„Evacuation

Using a vacuum pump, perform vacuuming from the charge port of valve of the outdoor unit.

For details, follow to the Installation Manual attached to the outdoor unit.

•Never use the refrigerant sealed in the outdoor unit for air purge.

service panel of the outdoor unit. It is necessary to

troubleshoot the compressor and refrigeration cycle

malfunction.

Open the valve fully

Open the valve of the outdoor unit fully. A 4 mm hexagonal wrench is required for opening the valve. For details, refer to the Installation Manual attached to the outdoor unit.

Gas leak check

Check with a leak detector or soap water whether gas leaks or not, from the pipe connecting section or cap of the valve.

REQUIREMENT

Use a leak detector manufactured exclusively for HFC refrigerant (R410A, R134a, etc.).

Thermal insulation process

Apply thermal insulation for the pipes separately at liquid side and gas side.

For the thermal insulation to the pipes at gas side, be sure to use the material with heat-resisting temperature 248 °F (120 °C) or higher.

Using the attached thermal insulation material, apply the thermal insulation to the pipe connecting section of the indoor unit securely without gap.

REQUIREMENT

•Apply the thermal insulation to the pipe connecting section of the indoor unit securely up to the root

17-EN

– 17 –

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Toshiba RAV-SP180UT-UL installation manual „ Evacuation
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RAV-SP180UT-UL specifications

The Toshiba RAV-SP180UT-UL is a cutting-edge commercial air conditioning unit designed to deliver exceptional cooling and heating performance. As part of Toshiba's advanced lineup of air conditioning systems, this model caters to diverse applications such as offices, retail spaces, and other commercial environments, ensuring comfortable conditions year-round.

One of the standout features of the RAV-SP180UT-UL is its powerful inverter technology. This technology enables the unit to adjust its cooling or heating output based on the current load requirements, resulting in significant energy savings and improved efficiency compared to conventional systems. It operates with a high Seasonal Energy Efficiency Ratio (SEER) and a Heating Seasonal Performance Factor (HSPF), making it an environmentally friendly choice for businesses seeking to reduce their carbon footprint.

Another key characteristic of the RAV-SP180UT-UL is its ultra-quiet operation. The unit is designed to minimize noise levels, providing a serene indoor environment that is ideal for workplaces and customer-facing areas. This low-noise performance is achieved through advanced fan engineering and acoustic insulation, ensuring that disruptions to work or leisure activities are kept to a minimum.

The RAV-SP180UT-UL also features flexible installation options, allowing for wall-mounted or ceiling-mounted configurations to suit various spatial requirements. Its compact design means that it can be installed in tight spaces without compromising on performance or aesthetics. The unit is equipped with a remote control for added convenience, enabling users to easily adjust settings, set timers, and switch between modes.

Moreover, the Toshiba RAV-SP180UT-UL is built with durability in mind. It utilizes high-quality materials and components that ensure long-lasting performance, even in demanding environments. The unit is also equipped with advanced filtration systems that enhance indoor air quality by removing dust, allergens, and other contaminants, contributing to a healthier workplace.

In summary, the Toshiba RAV-SP180UT-UL is a reliable and efficient solution for commercial air conditioning needs. Its inverter technology, quiet operation, flexible installation, and emphasis on durability make it a compelling choice for businesses looking to enhance comfort while maintaining energy efficiency. Whether for heating or cooling, this unit delivers consistent performance that meets the demands of modern commercial settings.
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