INSTALLATION
ENGLISH
21
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.
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.
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.
Inclined
Inside is shining without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked
Uneven
thickness
= Improper flaring =
Vinyl tape(narrow)
Connection pipe
Connecting cable
Vinyl tape (wide)
Wrap with vinyl tape
Indoor unit pipe
Pipe
Outdoor
unit
Liquid side
Flare connection
Flare connection
Gas side
Indoor
unit
CAUTION
Use two wrenches and tighten with regu-
lar torque.
!
Flare nut fastening torque
Ø6.35mm
1.8~2.5 kgf.m
Ø9.52mm
3.4~4.2 kgf.m
Ø12.7mm
5.5~6.6 kgf.m
Ø15.88mm
6.3~8.2 kgf.m
Ø19.05mm
9.9~12.1 kgf.m
Spanner
Torque
wrench
