Installation Manual 19
ENGLISH
Connecting Pipes
Main cause of gas leakage is defect in flaring
work. Carry out correct flaring work in the follow-
ing procedure.
Cut the pipes and the cable.
• Use the accessory piping kit or the pipes pur-
chased locally.
• Measure the distance between the indoor and
the outdoor unit.
• Cut the pipes a little longer than measured dis-
tance.
•
Cut the cable 1.5m longer than the pipe length.
Burrs removal
• Completely remove all burrs from the cut cross
section of pipe/tube.
•
Put the end of the copper tube/pipe to downward
direction as you remove burrs in order to avoid to
let burrs drop in the tubing.
Putting nut on
• Remove flare nuts attached to indoor and out-
door units, than 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 dedicated flaring tool
for R-410A as shown below.
Firmly hold copper tube in a bar(or die) as indicat-
ed dimension in the table above.
Check
• Compare the flared work with figure below.
• If flare is noted to be defective, cut off the flared
section and do flaring work again.
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