Daikin FBQ20DAVMK [12/60] P370016 1_11 1

English11

Table 1

CAUTION

• Over-tightening the flare nut may break it and/or cause the refrigerant to leak.

Not recommendable but in case of emergency

You must use a torque wrench but if you are obliged to install the unit without a torque wrench, you may

follow the installation method mentioned below.

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

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

suddenly increases. From that position, further tighten the flare nut the angle shown below:

Unless followed the tightening instruction (it is loose tightening), it will lead to the refrigerant leakage (slow

leak) and the device malfunction (it does not sufficiently cool or heat).

CAUTION

For local insulation, be sure to insulate local piping all the way into the pipe connections inside the

machine.

Exposed piping may cause condensation or burns on contact.

• Make absolutely sure to execute heat insulation works on the pipe-connecting section after checking gas

leakage by thoroughly studying the following figure and using the attached heat insulating materials for

fit

ting (4) and (5). (Fasten both ends with the clamps (8).) (Refer to Fig. 8)

• Wrap the middle sealing material (7) around the insulation for fitting (4) and (5) for the joint (flare nut part).

• Make sure that the joint of the insulation for fitting (4) and (5) for the joint on the liquid piping and gas piping

side faces upward.

Pipe size Tightening torque (N·m)

Flare dimensions

A (mm)

Flare

φ 9.5 (3/8”) 32.7 – 39.9 12.8 – 13.2

φ 15.9 (5/8”) 61.8 – 75.4 19.3 – 19.7

Pipe siz

e Further tightening angle Recommended arm length of tool

φ mm002 .

xorppAseerged 09 ot 06)”8/3( 5.9

φ mm003 .xorppAseerged 06 ot 03)”8/5( 9.51

45˚

2˚

R0.4-0.8

90˚

2˚

01_EN_3PN06583-10W.fm Page 10 Thursday, March 24, 2011 9:03 AM