Manual Daikin ABQ 125 CV1 (page 7 of 84) (English, German, Dutch, Italian, Portuguese, Turkish, Spanish)

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English

Piping Works And Flaring Technique

Do not use contaminated or damaged copper tubing. If any

piping, evaporator or condenser had been exposed or had

been opened for 15 seconds or more, the system must be

vacuumed. Generally, do not remove plastic, rubber plugs

and brass nuts from the valves, fittings, tubings and coils

until it is ready for connection.

If any brazing work is required, ensure that the nitrogen

gas is passed through piping and joints while the brazing

work is being done. This will eliminate soot formation on

the inside walls of the copper tubings.

Cut the pipe stage by stage, advancing the blade of pipe

cutter slowly. Extra force and deep cut will cause more

distortion of pipe and therefore extra burr. See Fig. A

Remove burrs from cut edges of pipes with a remover as

shown in Fig. B. This will avoid unevenness on the flare

faces which will cause gas leak. Hold the pipe on top

position and burr remover at lower position to prevent metal

chips from entering the pipe.

•

1/4t

Cutting Copper Tube

Insert the flare nuts mounted on the connection parts of both

indoor and outdoor unit, into the copper pipes.

The exact length of pipe protruding from the face of the

swaging block is determined by the flaring tool. See Fig. C

Fix the pipe firmly on the swaging block. Match the centers

of both the flare die and the flaring punch, and tighten

flaring punch fully.

Piping Connection To The Units

Align the center of the piping and sufficiently tighten the

flare nut with fingers. See Fig. D

Finally, tighten the flare nut with torque wrench until the

wrench clicks.

When tightening the flare nut with the torque wrench,

ensure that the direction for tightening follows the arrow

on the wrench.

The refrigerant pipe connection are insulated by closed cell

polyurethane.

•

Copper Tube

Fig. A

Ø Tube, D A (mm)

Inch mm

Imperial

(Wing-nut Type)

Rigid

(Clutch Type)

1/4" 6.35 1.3 0.7

3/8" 9.52 1.6 1.0

1/2" 12.70 1.9 1.3

5/8" 15.88 2.2 1.7

3/4" 19.05 2.5 2.0

REFRIGERANT PIPING

Copper Tube

Swaging Block

Fig. B

Remove Burr

Fig. C

Fig. D

Flared Tube

Flare Joint

Flare Nut

Indoor Piping

Torque Wrench

Spanner

Pipe Size, mm (in) Torque, Nm / (ft-lb)

6.35 (1/4") 18 (13.3)

9.52 (3/8") 42 (31.0)

12.70 (1/2") 55 (40.6)

15.88 (5/8") 65 (48.0)

19.05 (3/4") 78 (57.6)

1 IM 5CCY-0411(4)SIESTA-EN.indd 51 IM 5CCY-0411(4)SIESTA-EN.indd 5 10/12/17 9:24:11 AM10/12/17 9:24:11 AM

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Daikin ABQ 125 CV1 Manual

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