4.Wiring specifications

•Use 2-core with no polar wire.

•Match the length of wire to wire length of the central control system.

If mixed in the SMMS system, the wire length is lengthened with all indoor/outdoor inter-unit wire length at side.

•To prevent noise trouble, use 2-core shield wire.

No. of wires

Size

2Up to 1000m: twisted wire 1.25mm2

Up to 2000m: twisted wire 2.0mm2

•Connect the shield wire by closed-end connection and apply open process (insulating process) to the last terminal. Ground the earth wire to 1 point at indoor unit side. (In case of central controlling of digital inverter (DI, SDI) unit setup)

CAUTION

Central control device U1 U2

1)Closed-end connection of shield wire (Connect all the connecting parts of each indoor unit)

2)Apply open process to the last terminal (insulating process).

3)Ground earth wire to 1 point at indoor unit side.

Caution 2

Outdoor unit

1

2

3

Caution 1

1 2 3

Central control system wiring

1 2 3

Indoor unit

 

 

 

 

 

 

 

 

 

 

 

U3 U4

 

1

2

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A B

Remote controller

 

 

 

 

Header

 

 

 

 

 

 

 

Follower

 

 

 

 

 

 

 

unit

 

 

 

 

 

 

 

 

 

unit

 

 

 

 

 

 

U3

U4

 

1

 

2

3

 

 

 

U3

U4

 

1

 

2

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A B

A B

Remote controller

Remote controller

(Group operation)

: 1:1 model connection interface (This option)

5. P.C. board switch (SW01) setup

When performing collective control by DI or SDI only, the setup of terminator is necessary.

•Using SW01, set up the terminator.

•Set up the terminator to only the adapter connected to the indoor unit of least line address No.

Central control device

 

U1

U2

 

 

U3

U4

 

Central control device

 

U1

U2

 

 

U3

U4

 

Central control devices: Max. 10 units

Refrigerant line 1

Outdoor unit

1 2 3

Indoor unit

 

U3 U4

 

1

 

2

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A B

 

 

 

1:1 model connection interface ( This product ) sold separately

Remote controller

Refrigerant line 2

Central control

1

2

3

 

 

 

system wiring

 

 

 

 

 

 

Header

 

 

 

unit

U3 U4

1

2

3

A B

Remote controller

Refrigerant line 3

1 2 3

Indoor/outdoor inter-unit wire (AC230V serial)

Follower unit

1 2 3

A B

Remote controller wiring

Remote controller

 

 

 

 

 

 

Group operation (Max. 8 units)

 

 

 

 

 

 

 

 

Line address

 

1

 

 

 

2

 

SW01 Bit 1

 

ON

 

 

OF

(OFF at shipment from factory)

SW01 Bit 2

 

OFF

 

 

OFF

(OFF at shipment from factory)

Remarks

Turn SW01 Bit 1 to ON.

 

As status shipped from factory

 

(Reference) Setup contents of switch

 

 

 

 

 

 

 

 

 

 

SW01

 

Terminator

 

Remarks

Bit 1

Bit 1

 

 

 

 

 

 

 

 

OFF

OFF

 

None

 

Mixed with multi (Link wiring) at shipment from factory

ON

OFF

 

100Ω

 

Central control by digital inverter only

OFF

ON

 

75Ω

 

Spare

 

ON

ON

 

43Ω

 

Spare

 

– 63 –

Page 62 Page 64
Page 63
Image 63
Toshiba RAV-SM2802DT-E, RAV-SM2242DT-TR, RAV-SM2802DT-TR service manual Wiring specifications, C. board switch SW01 setup
Page 62 Page 64

RAV-SM2802DT-TR, RAV-SM2242DT-TR, RAV-SM2802DT-E specifications

Toshiba has long been a leader in heating, ventilation, and air conditioning (HVAC) technology, offering innovative solutions that cater to both residential and commercial needs. Among their impressive lineup, the Toshiba RAV-SM2802DT-E and RAV-SM2242DT-E stand out as exceptional models designed for efficiency, performance, and comfort.

The RAV-SM2802DT-E is a powerful unit ideal for larger spaces, boasting a cooling capacity of 28,000 BTU/h and a heating capacity of 31,000 BTU/h. This model features a highly efficient inverter compressor, which adjusts the power consumption based on the cooling or heating demand, ensuring optimal energy use. This inverter technology not only reduces energy consumption but also maintains a stable indoor temperature for enhanced comfort.

On the other hand, the RAV-SM2242DT-E is tailored for mid-sized applications with a cooling capacity of 22,000 BTU/h and a heating capacity of 25,000 BTU/h. This model also embraces inverter technology, promoting lower operational costs while delivering reliable performance. Both units come with a high energy efficiency rating, reducing environmental impact and saving on utility bills.

One of the key characteristics of these Toshiba models is their advanced filtration system. Equipped with a high-performance filtration mechanism, they can effectively reduce dust, allergens, and other pollutants, ensuring a healthier indoor environment. The units also operate quietly, contributing to a peaceful atmosphere, whether in a home, office, or commercial space.

Both the RAV-SM2802DT-E and RAV-SM2242DT-E are designed with user convenience in mind. They come with a user-friendly remote control, allowing for easy adjustments and settings from anywhere in the room. Compatibility with smart home systems further enhances user experience by enabling remote monitoring and control through smartphones or tablets.

Constructed with durability in mind, these units are built to withstand diverse weather conditions, making them suitable for various climatic environments. Additionally, their aesthetic design allows for seamless integration into any setting, ensuring that performance does not compromise on looks.

In summary, Toshiba's RAV-SM2802DT-E and RAV-SM2242DT-E offer a blend of superior technology, energy efficiency, and user-friendly features. With their inverter technology, advanced filtration systems, and durable designs, these models represent Toshiba's commitment to quality and innovation in the HVAC industry. Whether for residential or commercial applications, these units guarantee comfort and reliability all year round.
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