Daikin FVQ140CVEB Manual de instalación descargar pdf (Pagina 10)

English 9

• The outdoor unit is charged with refrigerant.

• The refrigerant piping can be taken out from the following side of

the unit.

Left side, Right side, Back side, Bottom side

You must decide from which side you intend to take out the

refrigerant piping.

• Be sure to use both a spanner and a torque wrench together as

shown in the drawing, when connecting or disconnecting pipes

to/from the unit. (Refer to Fig. 9)

*Using a tool other than a spanner can damage the head of the

flare nut, and gas leakage can occur due to tightening failure.

• Refer to “Table 2” for the dimensions for flaring.

• When connecting the flare nut, apply ester oil or ether oil to the

inside of flared section, and turn the nut spin 3-4 times by hand

before screwing in. (Refer to Fig. 10)

CAUTION

Be careful not to damage the flare section.

Table 2

• Refer to “Table 2” to determine the proper tightening torque.

CAUTION

Overtightening may damage the flare and cause a refrigerant leakage.

When you do not have a torque wrench, use Table 2 as a rule of thumb.

When you keep on tightening the flare nut with a spanner, there is a point where the tightening torque

suddenly increases.

From that point, further tighten and turn the flare nut the angle shown below. (Refer to Table 3)

After the work is finished, make sure to check that there is no leak.

Unless you tighten as instructed, (if it is loosely tightened), it may lead to the refrigerant leakage (slow

leak) and cause malfunction of the device (such as insufficient cooling or heating).

Table 3

Pipe size Tightening torque Flare dimensions A (mm) Flare

φ9.5 (3/8”) 32.7 - 39.9 N·m 12.8 - 13.2

φ15.9 (5/8”) 61.8 - 75.4 N·m 19.3 - 19.7

Pipe size Further tightening angle Recommended arm length of tool

φ9.5 (3/8”) 60 to 90 degrees Approx. 200mm

φ15.9 (5/8”) 30 to 60 degrees Approx. 300mm

Fig. 10

Apply ester or ether oil to this face.

Torque wrench

Spanner

Pipe union

Flare nut

Fig. 9

45˚2˚

R0.4-0.8

90˚ 2˚

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Daikin FVQ140CVEB Manual de instalación Pagina 10

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