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INSTALLATION
20
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.
- If the piping and the drain hose are in com-
mon direction bundle the piping and the drain
hose together by wrapping them with vinyl
tape.
Smooth all round
Inside is shining without scratches
Inclined
Even length
all round
Connection pipe
Vinyl tape (wide)
Connecting cable
Vinyl tape(narrow)
Piping Connection
- Form the piping according to its routing.
Avoid bending and bending back the same
piping point more than three times. (This will
result in hardening the pipe.)
- After deforming the piping, align centers of
the union fitting of the indoor unit and the
piping, and tighten them firmly with wrench-
es.
- Connect pipe to the service valve or ball
valve which is located below the outdoor
unit.
- After completing the piping connection, be
sure to check if there is gas leakage in indoor
and outdoor connection.
= Improper flaring =
Surface
Cracked Uneven
damaged
thickness
Indoor unit pipe
Wrap with vinyl tape
Pipe
Liquid side
Outdoor
unit
Gas side
Flare connection
!
CAUTION
Use two wrenches and tighten with regu-
lar torque.
Flare nut fastening torque
Ø6.35mm
Ø9.52mm
Ø12.7mm
Ø15.88mm
Ø19.05mm
Spanner
Vacuum drying
After completing the piping connection, exe-
cute vacuum drying for the connecting piping
and the indoor unit.
The vacuum drying must be carried out using
the service ports of both the liquid and gas
side valves.
Indoor
unit
Flare connection
1.8~2.5 kgf.m
3.4~4.2 kgf.m
5.5~6.6 kgf.m
6.3~8.2 kgf.m
9.9~12.1 kgf.m
Torque
wrench
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