4 AIR DUCTING WORK

Static pressure characteristics of each model

Fig. 1 RAV-SM561BT (Round duct)

Standard air volume 780m³/h

 

140

 

 

 

 

 

 

 

 

 

 

 

 

 

120

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

High

static

pressure

 

 

 

 

 

 

 

 

 

 

 

 

 

100

 

 

limit

 

 

 

2H

tap

 

 

Usable

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

High

 

 

 

 

 

 

 

 

(Pa)

 

 

 

 

static

 

 

 

 

 

 

80

 

 

 

 

pressure

 

 

 

 

 

 

 

 

 

 

1H

 

 

 

Static pressure

 

 

 

 

 

 

 

tap

 

 

 

 

 

 

 

 

 

 

 

 

volume limit (Min.)

 

 

 

 

 

 

 

 

volume limit (Max.)

60

 

 

Standard

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H

 

 

 

 

 

 

 

 

 

 

tap

 

 

 

 

40

Low

static

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Air

 

 

pressure

 

 

 

 

Air

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H

 

 

 

 

 

20

 

 

Standard

 

tap

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L

 

 

 

 

 

 

 

 

 

 

 

 

 

tap

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

500

 

 

 

700

 

780

 

 

 

900

Air volume m³/h

Fig. 3 RAV-SM801BT (Round duct)

 

140

 

 

 

 

Standard air volume 1140m³/h

 

 

 

 

 

 

 

 

 

 

120

 

 

 

 

 

 

 

 

 

 

 

 

 

 

High

 

 

 

 

 

 

 

 

 

static

 

 

 

 

 

 

 

 

 

pressure

 

 

100

 

 

 

 

 

 

2H

tap

 

 

 

 

 

 

 

 

 

 

 

limit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Usable

 

High

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

static

 

 

 

(Pa)

80

 

 

 

 

pressure

1H

tap

 

pressure

 

 

 

 

 

 

 

 

60

 

 

 

 

 

 

 

 

Static

(Min.)

 

 

Standard

 

 

(Max.)

 

 

 

 

 

 

 

 

 

 

 

H tap

 

 

 

 

40

limit

Low

static

 

 

limit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pressure

 

 

 

 

 

volume

 

 

 

H tap

 

 

volume

 

20

 

 

 

Standard L

 

 

 

 

Air

 

 

 

tap

 

 

Air

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

800

 

 

1000

1140

1200

1300

Air volume m³/h

Fig. 2 RAV-SM561BT (Square duct)

Standard air volume 780m³/h

 

140

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

High

static

pressure

 

 

120

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

limit

 

 

 

 

 

 

 

 

 

2H

tap

 

108

 

Usable

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100

 

High

static

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pressure

 

 

 

 

 

 

 

 

 

 

 

1H

tap

 

(Pa)

 

 

 

 

 

 

 

 

 

 

 

 

 

80

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pressure

 

(Min.)

 

Standard

 

 

 

 

 

 

 

(Max.)

60

 

 

 

 

H

tap

 

 

 

 

Static

volume limit

 

 

 

 

 

 

 

 

 

 

 

 

volume limit

 

 

Low

static

 

 

 

 

 

 

 

 

 

 

 

pressure

 

 

 

 

40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H

tap

 

 

 

Air

 

 

 

 

 

 

 

 

 

 

Air

 

 

 

 

Standard

 

 

 

 

 

 

 

20

 

 

 

L

tap

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

500

 

 

 

700

 

 

 

780

 

 

900

Air volume m³/h

Fig. 4 RAV-SM801BT (Square duct)

Standard air volume 1140m³/h

 

140

 

 

 

 

 

 

 

 

 

 

 

 

 

 

High

 

 

 

 

 

 

120

 

 

 

static

 

pressure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2H

tap

 

 

 

 

 

 

 

 

 

 

 

 

 

 

limit

 

 

 

 

 

 

 

100

 

Usable

 

High

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

static

 

 

 

 

 

 

 

 

 

 

pressure

 

 

 

 

 

 

 

 

 

 

1H

tap

 

 

 

 

 

 

 

 

 

 

 

(Pa)

80

 

 

 

 

 

 

 

 

 

Static pressure

 

limit (Min.)

 

 

Standard

 

 

 

 

limit (Max.)

60

 

 

H tap

 

 

 

 

 

 

 

 

 

 

 

 

Low

 

 

 

 

 

 

 

 

 

static

 

 

 

 

 

 

40

volume

 

 

pressure

H tap

 

volume

 

 

 

 

 

 

 

 

 

Standard L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Air

 

 

tap

 

 

Air

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

800

 

 

1000

 

1140

1200

 

1300

Air volume m³/h

53

Page 53
Image 53
Toshiba R410A service manual AIR Ducting Work, Static pressure characteristics of each model

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.