FLARING WORK AND CONNECTION OF PIPING

Flaring work

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

ACut the pipes and the cable.

Use the piping kit accessory or the pipes purchased locally.

Measure the distance between the indoor and the outdoor unit.

Cut the pipes a little longer than measured distance.

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

Copper

 

Slanted Uneven Rough

pipe

90¡

BBurrs removal

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

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

Pipe

Reamer

Point down

CPutting 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)

Flare nut

DFlaring work

Carry out flaring work using flaring tool as shown below.

Outside diameter

A

 

 

 

mm

inch

mm

 

 

 

ø 6.35

1/4

0~0.5

 

 

 

ø 9.52

3/8

0~0.5

 

 

 

ø 12.7

1/2

0~0.5

 

 

 

ø 15.88

5/8

0~1.0

 

 

 

Firmly hold copper pipe in a die in the dimension shown in the table above.

 

"A"

 

Handle

Bar

Bar

 

 

Yoke

 

 

 

 

 

 

Cone

 

Copper pipe

 

 

 

Clamp handle

Red arrow mark

 

 

 

ECheck

Compare the flared work with figure below.

If flare is noted to be defective, cut off the flared section and do flaring work again.

Smooth all round

Inside is shiny without scratches

= Improper flaring =

Inclined Surface Cracked Uneven

damaged thickness

Even length

all round

Connection of piping -Indoor

ARemove the 2 screws of right side panel

Right side panel

Copper tube

6

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Heat Controller HMH30BS-1SINGLE-ZONE Flaring Work and Connection of Piping, Flaring work, Connection of piping -Indoor

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