Toshiba RAV-SP1404AT8Z-E 111, Electrical Work, How to open the valve, Replenishing refrigerant

– 111 –

Super Digital Inverter

￿How to open the valve

Open or close the valve.

Liquid side

Open the valve with a 4 mm hexagon wrench.

Gas side

Valve unit

Using a minus screwdriver, turn it counterclockwise by 90° until it hits the stopper. (Full open)

Charge port

Flare nut

Handle position

Closed completely Opened fully

Stopper pin

Movable part of valve (Stem)

Main stopper

￿Replenishing refrigerant

This model is a 30 m chargeless type that does not need to have its refrigerant replenished for refrigerant pipes up to

30 m. When a refrigerant pipe longer than 30 m is used, add the specified amount of refrigerant.

Refrigerant replenishing procedure

1. After vacuuming the refrigerant pipe, close the valves and then charge the refrigerant while the air conditioner is not working.

2. When the refrigerant cannot be charged to the specified amount, charge the required amount of refrigerant from the charge port of the valve on the gas side during cooling.

Requirement for replenishing refrigerant

Replenish liquid refrigerant.

When gaseous refrigerant is replenished, the refrigerant composition varies, which disables normal operation.

Adding additional refrigerant

31~75 m: L

40 g × (L-30)

•L: Pipe length

•To add additional refrigerant to twin and triple systems, refer to the installation manual supplied with the branching pipe (sold separately).

•The refrigerant need not be reduced for a 30 meter (or less) refrigerant pipe.

Super Digital Inverter

7 ELECTRICAL WORK

WARNING

1. Using the specified wires, ensure that the wires are connected, and fix wires securely so that the external tension to the wires does not affect the connecting part of the terminals.

Incomplete connection or fixation may cause a fire, etc.

2.Be sure to connect the earth wire. (grounding work) Incomplete grounding may lead to electric shock. Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone wires.

3.The appliance shall be installed in accordance with national wiring regulations.

Capacity shortages of the power circuit or an incomplete installation may cause an electric shock or fire.

CAUTION

•Wrong wiring may cause a burn-out of some electrical parts.

•Be sure to use the cord clamps attached to the product.

•Do not damage or scratch the conductive core or inner insulator of the power and inter-connecting wires when peeling them.

•Use the power and Inter-connecting wires with specified thicknesses, specified types and protective devices required.

•Remove the panel, and you can see electric parts on the front side.

•A metal pipe can be installed through the hole for wiring. If the hole size does not fit the wiring pipe to be used, drill the hole again to an appropriate size.

•Be sure to clamp the power wires and indoor/outdoor connecting wires with a banding band along the

connecting pipe so that the wires do not touch the compressor or discharge pipe.

(The compressor and the discharge pipe become hot.) Furthermore, be sure to secure these wires with the pipe valve fixing plate and cord clamps stored in the electric parts box.

Electric parts box

Panel

Pipe valve fixing plate

Cord clamp

Pipe hole

•While the valve is fully opened, after the screwdriver has reached the stopper, do not apply torque exceeding

5 N•m. Applying excessive torque may damage the valve.

Valve handling precautions

•Open the valve stem until it strikes the stopper. It is unnecessary to apply further force.

•Securely tighten the cap with a torque wrench.

Cap tightening torque

	Ø9.5 mm	33 to 42 N•m
		(3.3 to 4.2 kgf•m)
Valve size
	Ø15.9 mm	20 to 25 N•m
		(2.0 to 2.5 kgf•m)
Charge port		14 to 18 N•m
		(1.4 to 1.8 kgf•m)

￿Wiring between Indoor Unit and Outdoor Unit

The dashed lines show on-site wiring.

	Outdoor unit		Indoor unit
	L1		Wired remote controller
		1	1
	L2
Input power		2	2
	L3
380-415 V 3N~, 50Hz		3	3
	N

Leakage breaker

•Connect the indoor/outdoor connecting wires to the identical terminal numbers on the terminal block of each unit. Incorrect connection may cause a failure.

For the air conditioner, connect a power wire with the following specifications.

Model (RAV-SP Type)	110AT8	140AT8	160AT8
Power supply		380-415 V 3N~
		50 Hz
Maximum running current		16.4 A
Recommended field fuse		20 A
Power wire*		5 ⋅ 2.5 mm2 or more
		(H07 RN-F or 60245 IEC 66)
Indoor/outdoor connecting wires*		4 ⋅ 1.5 mm2 or more
		(H07 RN-F or 60245 IEC 66)
* Number of wire wire size

EN-20 20 21 21-EN