Heat Controller DMH09SB-0 Flaring Work, Cut the pipes and the cable, Burrs removal, Flaring work

Installation

Flaring Work

Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the follow- ing procedure.

Cut the pipes and the cable.

1.Use the piping kit accessory or the pipes purchased locally.

2.Measure the distance between the indoor and the out- door unit.

3.Cut the pipes a little longer than measured distance.

4.Cut the cable 1.5m(59.1in) longer than the pipe length.

Copper		Slanted Uneven Rough
pipe	90°

Burrs removal

1.Completely remove all burrs from the cut cross section of pipe/tube.

2.Put the end of the copper tube/pipe in a downward direction as you remove burrs in order to avoid drop- ping burrs into the tubing.

Putting nut on

•Remove flare nuts attached to indoor and outdoor unit, then put them on pipe/tube having completed burr removal.

(not possible to put them on after flaring work)

Flaring work

• Carry out flaring work using flaring tool as shown below.

Outside diameter			A
mm	inch	mm		inch
Ø6.35	1/4	0~0.5		0~0.020
Ø9.52	3/8	0~0.5		0~0.020
Ø12.7	1/2	0~0.5		0~0.020
Ø15.88	5/8	0~1.0		0~0.039

Pipe

Reamer

Point down

Flare nut

Copper tube

Firmly hold copper pipe in a die in the dimen- sion shown in the table above.

	"A"	Handle
Bar		Bar
		Yoke
		Cone

Copper pipe

Clamp handle

Red arrow mark

Service Manual 19