64
WARNING
This equipment must be properly earthed.
Earth lead wire shall be Yellow/Green (Y/G) in
colour and should be longer than other lead wires
as shown in the figure for electrical safety in case
of slipping.
12.3.5 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 1/4" (6 mm) or above.
12.3.5.1
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.
12.3.6 Disposal of Outdoor Unit Drain Water
The unit should be mounted on a stand that suits to a local environmental requirement.
When the Drain elbow being used, please ensure to:-
o
Provide a minimum clearance of 2" (50mm) to access the bottom of base pan.
o
Seal the four 25/32" (20mm) diameter holes with Rubber caps (refer to illustration below).
o
Use a rigid or flexible PVC pipe (local supply) to dispose drained water from the elbow or use a stainless
steel tray (local supplied) to collect and dispose water.
If the unit is used in an area where temperature falls below 32°F (0°C) for 2 or 3 consecutive days, it is
recommended not to use the Drain elbow and Rubber caps, water from defrost process will trap, freeze up and
obstruct fan rotation. Water may drip from the basepan hole area during defrost function, do not stand or place
objects underneath.
Control Board
Cover (Metal)
Lock Nuts
Knockout
Holes
Front Panel
Connecting wires
Control Board
Cover (Resin)
Connectors
Particular
Plate
Particular
Plate’s
Opening hole
Plugs
Holder
Power
supply
cord
Indoor &
outdoor
connection
cable
Earth wire
longer
than other
AC wires
for safety
reasons
Earth wire
longer
than other
AC wires
for safety
reasons
Terminal
Board
Terminal
Board
Holder
1. To cut
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.
■
Improper flaring
■
Inclined Surface
damaged
Cracked Uneven
thickness
Bar
Handle
Core
Yoke
Clamp handle
Bar
0 –
1
/
32
" (0-0.5 mm)
Copper
pipe
Reamer
2. To remove burrs
3. To flare
Point down
Pipe
Red arrow mark
Drain
elbow
Rubber cap
x 4
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