Once the repair work has been completed, check for refrigerant leaks, and check the insulation

 

resistance and water drainage.

 

Then perform a trial run to check that the air conditioner is running properly.

 

 

 

After repair work has finished, check there is no trouble. If check is not executed, a fire, electric

Check after

shock or injury may be caused. For a check, turn off the power breaker.

 

 

After repair work (installation of front panel and cabinet) has finished, execute a test run to check

repair

there is no generation of smoke or abnormal sound.

 

 

If check is not executed, a fire or an electric shock is caused. Before test run, install the front

 

panel and cabinet.

 

 

 

Check the following matters before a test run after repairing piping.

 

•

Connect the pipes surely and there is no leak of refrigerant.

 

•

The valve is opened.

Do not

 

Running the compressor under condition that the valve closes causes an abnormal high

operate the

 

pressure resulted in damage of the parts of the compressor and etc. and moreover if there is

unit with the

 

leak of refrigerant at connecting section of pipes, the air is suctioned and causes further

valve closed.

 

abnormal high pressure resulted in burst or injury.

 

Only a qualified installer (∗1) or qualified service person (∗1) is allowed to relocate the air

 

conditioner. It is dangerous for the air conditioner to be relocated by an unqualified individual

 

since a fire, electric shocks, injury, water leakage, noise and/or vibration may result.

 

 

 

Check the following items after reinstallation.

 

1) The earth wire is correctly connected.

 

2) The power cord is not caught in the product.

 

3) There is no inclination or unsteadiness and the installation is stable.

Check after

If check is not executed, a fire, an electric shock or an injury is caused.

reinstallation

 

 

When carrying out the pump-down work shut down the compressor before disconnecting the

 

 

refrigerant pipe.

 

Disconnecting the refrigerant pipe with the service valve left open and the compressor still

 

operating will cause air, etc. to be sucked in, raising the pressure inside the refrigeration cycle to

 

an abnormally high level, and possibly resulting in reputing, injury, etc.

 

 

 

When the service panel of the outdoor unit is to be opened in order for the compressor or the

 

area around this part to be repaired immediately after the air conditioner has been shut down, set

 

the circuit breaker to the OFF position, and then wait at least 10 minutes before opening the

 

service panel.

 

If you fail to heed this warning, you will run the risk of burning yourself because the compressor

 

pipes and other parts will be very hot to the touch. In addition, before proceeding with the repair

 

work, wear the kind of insulated heat-resistant gloves designed to protect electricians.

 

 

 

When the service panel of the outdoor unit is to be opened in order for the fan motor, reactor,

Cooling check

inverter or the areas around these parts to be repaired immediately after the air conditioner has

 

been shut down, set the circuit breaker to the OFF position, and then wait at least 10 minutes

 

before opening the service panel.

 

If you fail to heed this warning, you will run the risk of burning yourself because the fan motor,

 

reactor, inverter heat sink and other parts will be very hot to the touch.

 

In addition, before proceeding with the repair work, wear the kind of insulated heat-resistant

 

gloves designed to protect electricians.

 

 

 

Only a qualified installer (∗1) or qualified service person (∗1) is allowed to install the air

 

conditioner. If the air conditioner is installed by an unqualified individual, a fire, electric shocks,

 

injury, water leakage, noise and/or vibration may result.

 

 

 

Before starting to install the air conditioner, read carefully through the Installation Manual, and

 

follow its instructions to install the air conditioner.

 

 

 

Do not install the air conditioner in a location that may be subject to a risk of expire to a

 

combustible gas.

 

If a combustible gas leaks and becomes concentrated around the unit, a fire may occur.

 

 

Installation

Install the indoor unit at least 2.5 m above the floor level since otherwise the users may injure

themselves or receive electric shocks if they poke their fingers or other objects into the indoor unit

 

while the air conditioner is running.

 

 

 

Install a circuit breaker that meets the specifications in the installation manual and the stipulations

 

in the local regulations and laws.

 

 

 

Install the circuit breaker where it can be easily accessed by the qualified service person (∗1).

 

 

 

Do not place any combustion appliance in a place where it is directly exposed to the wind of air

 

conditioner, otherwise it may cause imperfect combustion.

 

 

 

– 10 –

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Toshiba CEILING TYPE, CONCEALED DUCK TYPE service manual Resistance and water drainage
Page 9 Page 11

CONCEALED DUCK TYPE, CEILING TYPE specifications

Toshiba has long been a name associated with innovative and efficient HVAC solutions, and their Concealed Duck Type, Ceiling Type air conditioning units exemplify this legacy. These units are designed to provide exceptional comfort while seamlessly integrating into a variety of interior spaces.

One of the main features of the Toshiba Concealed Duck Type, Ceiling Type system is its discreet installation method. Unlike traditional wall-mounted units, this system is installed within the ceiling, allowing for an unobtrusive appearance. The result is a clean and modern aesthetic, ideal for residential and commercial settings where design is a priority. With only the supply and return grilles visible, the units maintain the integrity of the interior decor.

The technology employed in Toshiba's air conditioning systems revolves around energy efficiency and user comfort. The units are equipped with inverter technology, which allows for precise temperature control and reduces energy consumption. The inverter adjusts the compressor speed to meet the cooling or heating demand, ensuring not only optimal comfort but also reduced operational costs.

Another significant characteristic of the Toshiba Concealed Duck Type units is their quiet operation. Designed with sound-dampening features, they operate at low noise levels, making them suitable for environments where noise can be a concern, such as offices, hotels, or residential spaces.

Toshiba's advanced air filtration system further enhances indoor air quality. Integrated filters capture dust and allergens, creating a healthier indoor environment. This is particularly beneficial for individuals with allergies or respiratory concerns, as the system works to reduce airborne pollutants.

The units also offer flexible control options. With the availability of remote control or smart home integration, users can easily adjust settings to suit their preferences. Additionally, some models come with programmable timers, allowing for energy savings when the space is unoccupied.

Furthermore, these units are designed for reliability and ease of maintenance. Toshiba emphasizes durability in their construction, and the concealed installation not only enhances aesthetics but also protects the unit from potential damage. Routine maintenance can be performed efficiently, ensuring longevity and sustained performance.

In summary, Toshiba's Concealed Duck Type, Ceiling Type air conditioning units deliver a blend of innovative technology, energy efficiency, and contemporary design. With features like inverter technology, quiet operation, advanced air filtration, and flexible control options, they offer a compelling choice for those seeking comfort without compromising style. These units stand as a testament to Toshiba's commitment to quality and customer satisfaction in the HVAC industry.
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