Daikin FXCQ125AVEB [12/30] R0 4 0

11 English

Ta ble 2

CAUTION

Do not have oil adhere to the screw fixing part of resin parts.

If oil adheres, it may weaken the strength of screwed part.

Do not tighten flare nuts too tight.

If a flare nut cracks, the refrigerant may leak.

• If there is no torque wrench, use Table 3 as a rule of thumb.

When tightening a flare nut with a spanner harder and harder, there is a point where the tightening torque

suddenly increases.

From that position, tighten the nut additionally the angle shown in Table 3.

After the work is finished, check securely that there is no gas leak.

If the nut is not tightened as instructed, it may cause slow refrigerant leak and result in malfunction (such

as does not cool or heat).

Ta ble 3

• After leak test, referring to Fig. 9, insulate both the gas and liquid piping connection with the attached

joint insulating material (8) and (9) to prevent the pipings from getting exposed.

Then, tighten the both ends of insulating material with the clamp (4).

• Wrap the sealing material (Small) (11) around the joint insulating material (8) and (9) (flare nut section),

both the gas and liquid piping.

• Make sure to bring the seam of joint insulating material (8) and (9) to the top.

Piping size (mm) Tightening torque (N·m)

Dimension for processing

flare A (mm)

Flare shape

φ 6.4 15.7 ± 1.5 8.9 ± 0.2

φ 9.5 36.3 ± 3.6 13.0 ± 0.2

φ 12.7 54.9 ± 5.4 16.4 ± 0.2

φ 15.9 68.6 ± 6.8 19.5 ± 0.2

Piping size (mm) Tightening angle Recommended arm length of tool used

φ 6.4 60° - 90° approx. 150mm

φ 9.5 60° - 90° approx. 200mm

φ 12.7 30° - 60° approx. 250mm

φ 15.9 30° - 60° approx. 300mm

R0. 4-0.8

90˚±2˚

45˚±2˚

01_EN_3P249378-7M.fm Page 11 Wednesday, September 12, 2012 1:05 PM