Toshiba CONCEALED DUCK TYPE, CEILING TYPE Refrigerant used by this air conditioner is the R410A

	The refrigerant used by this air conditioner is the R410A.
	Check the used refrigerant name and use tools and materials of the parts which match with it.
	For the products which use R410A refrigerant, the refrigerant name is indicated at a position on
	the outdoor unit where is easy to see.
	To prevent miss-charging, the route of the service port is changed from one of the former R22.
	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.
	For an air conditioner which uses R410A, never use other refrigerant than R410A.
	For an air conditioner which uses other refrigerant (R22, etc.), never use R410A.
	If different types of refrigerant are mixed, abnormal high pressure generates in the refrigerating
	cycle and an injury due to breakage may be caused.
	Do not charge refrigerant additionally.
	If charging refrigerant additionally when refrigerant gas leaks, the refrigerant composition in the
	refrigerating cycle changes resulted in change of air conditioner characteristics or refrigerant over
	the specified standard amount is charged and an abnormal high pressure is applied to the inside
	of the refrigerating cycle resulted in cause of breakage or injury.
Refrigerant	Therefore if the refrigerant gas leaks, recover the refrigerant in the air conditioner, execute
	vacuuming, and then newly recharge the specified amount of liquid refrigerant.
	In this time, never charge the refrigerant over the specified amount.
	When recharging the refrigerant in the refrigerating cycle, do not mix the refrigerant or air other
	than R410A into the specified refrigerant.
	If air or others is mixed with the refrigerant, abnormal high pressure generates in the refrigerating
	cycle resulted in cause of injury due to breakage.
	After installation work, check the refrigerant gas does not leak.
	If the refrigerant gas leaks in the room, poisonous gas generates when gas touches to fire such
	as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous.
	Never recover the refrigerant into the outdoor unit.
	When the equipment is moved or repaired, be sure to recover the refrigerant with recovering device.
	The refrigerant cannot be recovered in the outdoor unit; otherwise a serious accident such as
	breakage or injury is caused.
	After repair work, surely assemble the disassembled parts, and connect and lead the removed
	wires as before.
	Perform the work so that the cabinet or panel does not catch the inner wires.
Assembly/	If incorrect assembly or incorrect wire connection was done, a disaster such as a leak or fire is
Cabling	caused at user’s side.
	After the work has finished, be sure to use an insulation tester set (500V Megger) to check the
	resistance is 1MΩ or more between the charge section and the non-charge metal section
	(Earth position).
Insulator	If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s side.
check
	When the refrigerant gas leaks during work, execute ventilation.
	If the refrigerant gas touches to a fire, poisonous gas generates.
	A case of leakage of the refrigerant and the closed room full with gas is dangerous because a
Ventilation	shortage of oxygen occurs. Be sure to execute ventilation.
	When the refrigerant gas leaks, find up the leaked position and repair it surely.
	If the leaked position cannot be found up and the repair work is interrupted, pump-down and
	tighten the service valve, otherwise the refrigerant gas may leak into the room.
	The poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove
	though the refrigerant gas itself is innocuous.
	When installing equipment which includes a large amount of charged refrigerant such as a multi
	air conditioner in a sub-room, it is necessary that the density does not the limit even if the
	refrigerant leaks.
	If the refrigerant leaks and exceeds the limit density, an accident of shortage of oxygen is caused.

Tighten the flare nut with a torque wrench in the specified manner.

Compulsion	Excessive tighten of the flare nut may cause a crack in the flare nut after a long period, which may
	result in refrigerant leakage.

Nitrogen gas must be used for the airtight test.

The charge hose must be connected in such a way that it is not slack.

For the installation/moving/reinstallation work, follow to the Installation Manual.

If an incorrect installation is done, a trouble of the refrigerating cycle, water leak, electric shock or fire is caused.

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