Service Manual 23
Flaring work and connection of piping
Put a couple drops of refrigerant oil on the face of
the flare before assembling taking care not to add
any contaminants.
Align the center of the pipings and sufficiently
tighten the flare nut by hand.
Finally, tighten the flare nut with torque wrench until the
wrench clicks.
• When tightening the flare nut with torque wrench,
ensure the direction for tightening follows the arrow on
the wrench.
mm inch kgf.cm
Ø6.35 1/4 180~250
Ø9.52 3/8 340~420
Ø12.7 1/2 550~660
Ø15.88 5/8 630~820
Ø19.05 3/4 980~1210
Outside diameter Torque

Outdoor unit

Liquid side piping
(Smaller diameter)
Gas side
piping
(Bigger
diameter)
Torque wrench
Connection of Piping -Outdoor