Toshiba RAS-13UKV-E2 Refrigerant piping connection Flaring, Copper pipe Tightening connection

9-3. Outdoor Unit

9-3-1. Installation place

•A place which provides the spaces around the outdoor unit as shown in the left diagram.

•A place which can bear the weight of the outdoor unit and does not allow an increase in noise level and vibration.

•A place where the operation noise and discharged air do not disturb users neighbors.

•A place which is not exposed to a strong wind.

•A place free of a leakage of combustible gases.

•A place which does not block a passage.

•When the outdoor unit is to be installed in an elevated position, be sure to secure its feet.

•An allowable length of the connecting pipe is up 15 m.

•An allowable height level is up to 10 m.

•A place where the drain water does not raise any problem.

CAUTION

1.Install the outdoor unit without anything blocking the air discharging.

2.When the outdoor unit is installed in a place exposed always exposed to strong wind like a coast or on a high storey of a building, secure the normal fan operation using a duct or a wind shield.

3.In particularly windy areas, install the unit such as to avoid admission of wind.

4.Installation in the following places may result in trouble.

Do not install the unit in such places.

•A place full of machine oil.

•A saline-place such as the coast.

•A place full of sulfide gas.

•A place where high-frequency waves are likely to be generated as from audio equipment, welders, and medical equipment.

Strong wind

Fig. 9-3-1

FILE NO. SVM-03008

9-3-2. Refrigerant piping connection

<Flaring>

1. Cut the pipe with a pipe cutter.

90° Obliquity Roughness Warp

Fig. 9-3-2

2.Insert a flare nut into the pipe, and flare the pipe.

• Projection margin in flaring : A (Unit : mm)

				A
Die			Pipe
	Fig. 9-3-3
Rigid (Clutch type)
Outer dia.		R410A			Conventional
of copper pipe		tool used			tool used
6.35		0 to 0.5			1.0 to 1.5
9.52		0 to 0.5			1.0 to 1.5
Imperial (wing nut type)
Outer dia.				R410A
of copper pipe
6.35				1.5 to 2.0
9.52				1.5 to 2.0

<Tightening connection>

Align the centers of the connecting pipes and tighten the flare nut as far as possible with your fingers. Then tighten the nut with a spanner and torque wrench as shown in the figure.

Half union	Flare nut
Externally	Internally
threaded side	threaded side
Use a wrench to secure.	Use a torque wrench to tighten.

Fig. 9-3-4

CAUTION

•Do not apply excess torque.

•Otherwise, the nut may crack depending on the conditions.

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