Installation reference (Example for RAV-SM801BT model)

The air supply ducting work is classified in two ways, one is branched by the round ducts, and the other is branched by the square ducts. (Be sure to divide the air supply duct into three or more branches.)

<Round duct>

In case of the round duct, use the thermal insulator of thickness 25mm or more and inner diameter 150mm or more to the duct board.

(If the inner diameter is not enough, resistance increase, as the result, air does not flow smoothly and loss of the static pressure increases.) For the thermal insulator, use high-density glass wool of 24kg/m3 or equivalent.

<Square duct> (Reference for square duct)

When using the square duct, change the type of the air supply flange from round type to square flange at the local site.

In case of the square duct, apply the thermal insulator of thickness 25mm or more to the duct board. For the thermal insulator, use high-density glass wool of

25mm or more

Density of thermal insulator (glass wool) is 24 kg/m³ or equivalent.

weight 64kg/m3.

Ø150mm or more

Connecting method of the duct

1. Supply air side <Round duct>

Thermal insulator

Thermal insulator

with sticking material

at indoor unit side

(50mm-width, 6mm-thickness)

Stuck already at

 

Aluminum tape

(shipment from the factory)

(Seal : 50mm-width)

 

Duct board

 

 

 

 

 

 

 

 

Density of thermal

 

 

 

 

 

 

 

 

 

 

 

insulator (glass wool) is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

64 kg/m³ or equivalent.

 

 

 

 

 

 

 

 

 

 

 

25mm or more

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

<Square duct>

Thermal insulator with

Thermal insulator

sticking material

(50mm-width, 6mm (t))

at indoor unit side

 

Stuck already at

Aluminum tape

(shipment from the factory)

(Seal : 50mm-width)

 

Fit to the arrow direction by pushing.

Round duct

 

Thermal insulator

Flange

25mm-thickness,

 

(24kg/m³ or equivalent )

 

Screws

(6 pieces)

Seal/thermal insulator with sticking material (25mm-width, 6mm (t))

Fit to the arrow direction by pushing.

Attach by pushing to the arrow direction. (Outside corner direction)

Square duct board

(25mm-thickness, )

Screws

(6 pieces)

Indoor unit side

Flange (procured locally)

Seal/thermal insulator with sticking material (25mm-width, 6mm (t))

Fit the seal/thermal insulator (25mm-width, 6mm-thickness) by pushing to the arrow direction so that no gap can be found between the flange and the round duct.

Fig. 2 (a)

64kg/m³ or equivalent

Fig. 2 (b)

CAUTION

Incomplete thermal insulation of the supply air flange and sealing may cause dew drops.

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Toshiba R410A service manual Connecting method of the duct

R410A specifications

Toshiba R410A is a highly regarded refrigerant known for its efficiency and environmental benefits. This hydrofluorocarbon (HFC) mixture is widely used in various air conditioning and refrigeration applications due to its excellent thermodynamic properties. One of the standout features of R410A is its superior energy efficiency, which contributes to lower energy consumption and reduced CO2 emissions in HVAC systems.

One significant advantage of R410A over older refrigerants, such as R22, is its lower ozone depletion potential (ODP). R410A has an ODP of zero, making it a more environmentally friendly choice. This characteristic aligns with global initiatives aimed at protecting the ozone layer and promoting sustainable practices. The shift to R410A has been supported by government regulations in many countries, phasing out older, more harmful refrigerants.

Toshiba has incorporated advanced technologies in its R410A compatible products, enhancing performance and reliability. Among these technologies is the inverter technology that allows the compressor to operate at variable speeds. This functionality leads to improved temperature regulation, reduced noise levels, and further energy savings. Inverter systems provide precise control over the cooling and heating processes, allowing for a comfortable indoor environment while minimizing wastage of energy.

R410A also exhibits excellent heat transfer properties, which boosts cooling capacity. This feature makes it suitable for large-scale HVAC systems, including commercial and industrial applications. Its high-pressure characteristics enable the design of more compact and efficient components, allowing for smaller units and easier installation.

Furthermore, Toshiba's dedication to technological innovation is visible in its commitment to research and development. The company continuously strives to optimize systems that utilize R410A, focusing on reliability and longevity. This includes improved compressor designs, enhanced heat exchangers, and the integration of smart controls that adapt to the varying load conditions in real-time.

In terms of safety, R410A is classified as non-toxic and non-flammable under normal conditions, making it a safe choice for use in residential and commercial settings. However, it is important to note that R410A operates at higher pressures compared to traditional refrigerants, necessitating proper equipment design and handling procedures.

In conclusion, Toshiba R410A stands out in the market for its energy efficiency, environmental safety, and technological advancements. It is an ideal refrigerant for modern HVAC applications, contributing to both comfort and sustainability. As the industry continues to evolve, R410A remains a pivotal element in the quest for responsible and efficient refrigeration solutions.