Toshiba RAS-5M34S3AV-E, RAS-4M27S3AV-E, RAS-3M26S3AV-E INSTALLATION MANUAL

AIR CONDITIONER (MULTI-SPLIT TYPE)

Installation Manual

Outdoor Unit

Model name:

RAS-5M34S3AV-E RAS-4M27S3AV-E RAS-3M26S3AV-E

* NOTE: Descriptions about operations for the E unit in this manual are

not applicable to RAS-4M27S3AV-E.

Descriptions about operations for the D unit and the E unit in

this manual are not applicable to RAS-3M26S3AV-E.

Installation Manual Outdoor Unit

English

Outdoor Unit Installation Manual

Contents

1 Precautions for safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2 Installation / service tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Speciﬁcations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4 Optional parts, accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

5 Installation of outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

6 Refrigerant piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

7 Electrical work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

8 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

9 Test run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Please read this Installation Manual carefully before installing the Air Conditioner.

• This Manual describes the installation method of the outdoor unit.

• For installation of the indoor unit, refer to the Installation Manual attached to the indoor unit.

IMPORTANT NOTICE

For details on how to install the indoor units, refer to the installation manual accompanying the indoor units.

Outdoor Unit Installation Manual

1 Precautions for safety

The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual. Be sure to read this installation manual carefully before installing. The supplied CD-ROM contains the installation manual translated into many languages. Recommend to the owner to perform maintenance periodically when using over long periods of time. This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved.

Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.

Be sure to follow the precautions provided here to avoid safety risks. The symbols and their meanings are shown below.

DANGER

WARNING

CAUTION

*1: A severe injury refers to blindness, injury, burns (hot or cold), electrical shock, bone

fracture, or poisoning that leaves after effects and requires hospitalization or extended out-patient treatment.

*2: Personal injury means a slight accident, burn, or electrical shock which does not

require admission or repeated hospital treatment.

*3: Property damage means greater damage which affects assets or resources.

It indicates that incorrect use of this unit can result in a high possibility of severe injury(*1) or death.

It indicates that incorrect use of this unit may cause severe injury or death.

It indicates that incorrect use of this unit may cause personal injury(*2), or property damage(*3).

For general public use

Power supply cord of parts of appliance for outdoor use shall be at least polychloroprene sheathed flexible cord (design H07RN-F) or cord designation 60245 IEC66 (2.5 mm2 or more). (Shall be installed in accordance with national wiring regulations.) This appliance is not intended for use by person (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.

Outdoor Unit Installation Manual

CAUTION

New refrigerant air conditioner installation

THIS AIR CONDITIONER USES THE NEW HFC REFRIGERANT (R410A), WHICH DOES NOT DESTROY THE OZONE LAYER. R410A refrigerant is apt to be affected by impurities such as water, oxidizing membranes, and oils because the pressure of R410A refrigerant is approx. 1.6 times of refrigerant R22. As well as the adoption of this new refrigerant, refrigerating machine oil has also been changed. Therefore, during installation work, be sure that water, dust, former refrigerant, or refrigerating machine oil does not enter the refrigeration cycle of a new-refrigerant air conditioner. To avoid mixing refrigerant and refrigerating machine oil, the sizes of charging port connecting sections on the main unit are different from those for the conventional refrigerant, and different size tools are also required. For connecting pipes, use new and clean piping materials with high pressure withstand capabilities, designed for R410A only, and ensure that water or dust does not enter. Moreover, do not use any existing piping as its pressure withstand may be insufficient and may contain impurities.

DANGER

• The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual.

• For use by qualified persons only.

• Means for disconnection from the supply having a contact separation of at least 3 mm in all poles must be incorporated in the fixed wiring.

• Turn off main power supply before attempting any electrical work. Make sure all power switches are off. Failure to do so may cause electric shock.

• Connect the connecting cables correctly. If the connecting cables are connected wrongly, electric parts may be damaged.

• Check the earth wire that it is not broken or disconnected before installation.

• Do not install near concentrations of combustible gas or gas vapors. Failure to follow this instruction can result in fire or explosion.

• To prevent overheating the indoor unit and causing a fire hazard, place the unit well away (more than 2 m) from heat sources such as radiators, heaters, furnace, stoves, etc.

• When moving the air conditioner for installing it in another place again, be very careful not to get the specified refrigerant (R410A) with any other gaseous body into the refrigeration cycle. If air or any other gas is mixed in the refrigerant, the gas pressure in the refrigeration cycle becomes abnormally high and it resultantly causes burst of the pipe and injuries on persons.

• In the event that the refrigerant gas leaks out of the pipe during the installation work, immediately let fresh air into the room. If the refrigerant gas is heated by fire or something else, It causes generation of poisonous gas.

• When installing or re-installing the air conditioner, do not inject air or other substances besides the designated refrigerant “R410A” into the refrigerating cycle. If air or other substances are mixed, an abnormal pressure can occur in the refrigerating cycle, and this can cause an injury due to a pipe rupture.

Outdoor Unit Installation Manual

WARNING

• Do not use any refrigerant different from the one specified for complement or replacement. Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which may result in a failure or explosion of the product or an injury to your body.

• Installation work must be requested from the supplying retail dealership or professional vendors. Self-installation may cause water leakage, electrical shock, or fire as a result of improper installation.

• Specified tools and pipe parts for model R410A are required, and installation work must be done in accordance with the manual. HFC type refrigerant R410A has 1.6 times more pressure than that of conventional refrigerant (R22). Use the specified pipe parts, and ensure correct installation, otherwise damage and/or injury may be caused. At the same time, water leakage, electrical shock, and fire may occur.

• Be sure to install the unit in a place which can sufficiently bear its weight. If the load bearing of the unit is not enough, or installation of the unit is improper, the unit may fall and result in injury.

• Electrical work must be performed by a qualified electrical engineer in accordance with the code governing such installation work, internal wiring regulations, and the manual. A dedicated circuit and the rated voltage must be used. Insufficient power supply or improper installation may cause electrical shock or fire.

• Use a cabtyre cable to connect wires in the indoor/outdoor units. Midway connection, stranded wire, and single-wire connections are not allowed. Improper connection or fixing may cause a fire.

• Wiring between the indoor unit and outdoor units must be well shaped so that the cover can be firmly placed. Improper cover installation may cause increased heat, fire, or electrical shock at the terminal area.

• Be sure to use only approved accessories or the specified parts. Failure to do so may cause the unit to fall, water leakage, fire or electrical shock.

• After the installation work, ensure that there is no leakage of refrigerant gas. If the refrigerant gas leaks out of the pipe into the room and is heated by fire or something else from a fan heater, stove or gas range, it causes generation of poisonous gas.

• Make sure the equipment is properly earthed. Do not connect the earth wire to a gas pipe, water pipe, lightning conductor, or telephone earth wire. Improper earth work may be the cause of electrical shock.

• Do not install the unit where flammable gas may leak. If there is any gas leakage or accumulation around the unit, it can cause a fire.

• Do not select a location for installation where there may be excessive water or humidity, such as a bathroom. Deterioration of insulation may cause electrical shock or fire.

• Installation work must be performed following the instructions in this installation manual. Improper installation may cause water leakage, electrical shock or fire. Check the following items before operating the unit.

- Be sure that the pipe connection is well placed and there are no leaks.

- Check that the service valve is open. If the service valve is closed, it may cause

overpressure and result in compressor damage. At the same time, if there is a leak in the connection part, it may cause air suction and overpressure, resulting in burst or injury.

• The following must be certainly done during pump down.

• Do not incorporate air into the refrigeration cycle.

• Close the 2 service valves. Stop the compressor and remove the refrigerant pipe. If the refrigerant pipe is removed when the compressor is operating and service valves are opened, the refrigerant cycle will inhale unwanted matter such as air and the pressure in the cycle becomes abnormally elevated. It may cause a burst or injury.

• Do not modify the power cable, connect the cable midway, or use a multiple outlet extension cable. Doing so may cause contact failure, insulation failure, or excess current, resulting in fire or electrical shock.

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