37
11.3.4 Connect the Cable to the Outdoor Unit
1 Remove the control board cover from the unit
by loosening the screw.
2
Connection cable
between indoor unit and
outdoor unit shall be approved
polychloroprene sheathed 4
×
1.5 mm
2
(1.0 ~
1.75HP) or 4
×
2.5 mm
2
(2.0 ~ 2.5HP) flexible
cord, type designation 60245 IEC 57 or
heavier cord. Do not use joint connection
cable. Replace the wire if the existing wire
(from concealed wiring, or otherwise) is too
short. Allowable connection cable length of
each indoor unit shall be 30 m or less.
Terminals on the outdoor unit
Colour of wires
Terminals on the indoor unit
1
1
2
2
3
3
3 Secure the cable onto the control board with
the holder (clamper).
4 Attach the control board cover back to the
original position with screw.
5 For wire stripping and connection requirement,
refer to instruction 11.2.4 of indoor unit.
Earth Wire
longer than
others AC
wires for
safety reason
Terminal
Board
Holder
Indoor and outdoor
cable connection
Indoor Unit
WARNING
This equipment must be properly earthed.
Earth wire shall be Yellow/Green (Y/G) in colour
and longer than other AC wires for safety reason.
11.3.5 Piping
Insulation
1 Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation
Diagram. Please wrap the insulated piping end to prevent water from going inside the piping.
2 If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by
using POLY-E FOAM with thickness 6 mm or above.
11.3.5.1
Cutting and flaring the piping
1 Please cut using pipe cutter and then remove the burrs.
2 Remove the burrs by using reamer. If burrs are not removed, gas leakage may be caused. Turn the piping
end down to avoid the metal powder entering the pipe.
3 Please make flare after inserting the flare nut onto the copper pipes.
1. To cut
■
Improper
fl
aring
■
Inclined
damaged
Cracked
thickness
Surface
Uneven
3. To
fl
are
Bar
Red arrow mark
Handle
Core
Yoke
Clamp handle
Bar
0 – 0.5 mm
Copper
pipe
Reamer
2. To remove burrs
Point down
Pipe
When properly flared, the internal surface of the
flare will evenly shine and be of even thickness.
Since the flare part comes into contact with the
connections, carefully check the flare finish.
