Справочник Пользователя для Toshiba RAV-SM1101AT-E

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1. If the outdoor units are to be mounted on a wall,

make sure that the supporting platform is
sufficiently strong.  The platform should be
designed and manufactured to maintain its strength
over a long period of time, and sufficient
consideration should be given to ensuring that the
outdoor unit will not fall.

(In case pipe size is Ø15.9, with 1.0mm or more.)

3. Flare nut and flare works are also different from

those of the conventional refrigerant.
Take out the flare nut attached to the main unit of
the air conditioner, and use it.

1. Remove dust and moisture from the inside of

the connecting pipes.

2. Tight connection (between pipes and unit)

3. Evacuate the air in the connecting pipes using

VACUUM PUMP.

4. Check the gas leakage. (Connected points)

They vary according to the outdoor unit. For details,
refer to the Installation Manual attached to the outdoor
unit.

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

As the flaring sizes of R410A differ from those of
refrigerant R22, the flare tools newly manufactured for
R410A are recommended.
However, the conventional
tools can be used by
adjusting projection
margin of the copper pipe.

B

A

Imperial (Wing nut type)

*

In case of flaring for R410A with the conventional
flare tool, pull it out approx.
0.5 mm more than that for R22 to
adjust to the specified flare size.
The copper pipe gauge is useful
for adjusting projection margin size.

• Do not apply excessive torque.  Otherwise, the

nut may crack depending on the conditions.

(Unit : N•m)

Pressure of R410A is higher than that of R22.
(Approx. 1.6 times) Therefore, using a torque
wrench, tighten the flare pipe connecting sections
which connect the indoor
and outdoor units of the
specified tightening torque.
Incorrect connections may
cause not only a gas
leak, but also a trouble
of the refrigeration cycle.

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.

Flare at 

indoor 

unit side

Flare at 

outdoor 

unit side

Half union

Flare nut

Externally 
threaded side

Internally 
threaded side

Use a wrench to secure.

Use a torque wrench to tighten.

6.4 to 15.9

R22

0 to 0.5 (Same as left)

R22

1.0 to 1.5

0.5 to 1.0

6.4 or 9.5

12.7 or 15.9

R22

1.5 to 2.0

1.0 to 1.5

2.0 to 2.5

1.5 to 2.0

 6.4

 9.5

12.7

15.9

R22

  9.1

  9.0

13.2

13.0

16.6

16.2

19.7

19.2

  6.4 mm (diam.)

  9.5 mm (diam.)

12.7 mm (diam.)

15.9 mm (diam.)

14 to 18 (1.4 to 1.8 kgf•m)

33 to 42 (3.3 to 4.2 kgf•m)

50 to 62 (5.0 to 6.2 kgf•m)

68 to 82 (6.8 to 8.2 kgf•m)

Rigid (Clutch type)