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ELECTRICAL WIRING
2 When the left side drain piping connection is performed,
remove the cap of left side drain pipe, and then attach this
cap to the right side drain pipe in order to change drain
piping connection from right side to left side. If the cap is
fixed tightly, remove the cap by using the plier. (Perform this
procedure before the indoor unit is hung onto the wall.)
Drain
outlet cap
Drain outlet cap
Insert until
this line
3 Connecting drain piping
a. Provide a PVC piping with 16 mm outer diameter or
locally approved equivalent for the application.
b. When the drain hose is used, do not create rising part or
twist.
16 ELECTRICAL WIRING
!
D A N G E R
•
The electrical wiring work must be performed by authorized
installers. If not, it may cause an electric shock or a fire.
•
Perform the electrical work according to each regulation of
region and "Installation and Operation Manual ", and the
dedicated electrical circuit must be used. If not performing the
electrical wiring work completely or a capacity shortage of the
power circuit, it will cause an electric shock or a fire.
•
Use the specified cables for wiring between the outdoor unit and
indoor units. Selecting incorrect cables will cause an electric
shock or a fire.
•
Install an ELB (Earth Leakage Breaker) and CB (Circuit Breaker)
in the power source. If not used, it will cause an electric shock
or a fire.
•
Turn OFF the main power switch of the indoor unit and the
outdoor unit before an electrical wiring work or a periodical
check is performed. If not, it will cause an electric shock or a fire.
•
Turn completely OFF the power source to prevent an electrical
shock when opening the service cover to perform the electrical
work or the maintenance.
•
Check to ensure that the indoor fan and the outdoor fan have
stopped before electrical wiring work or a periodical check is
performed.
•
Protect the wires, drain pipe, electrical parts, etc. from rats or other
small animals. If not protected, rats may gnaw at unprotected
parts and at the worst, a fire will occur.
18
PMML0552 rev.1 - 02/2021 - A10635790A
Drain hose
Left side
Drain hose
Insert until
this line
Right side
Create down-slope
Wrap the vinyl tape
Connection
PVC pipe (VP16)
or locally approved
equivalent
c. Wrap surely the vinyl tape around the drain piping
connection.
d. Insulate surely the drain pipe after the vinyl chloride pipe
connection is completed.
4 Do not connect the drain pipe with sanitary or sewage piping
or any other drainage piping.
5 After the drain piping work is completed, check that water
flows smoothly by pouring water into the drain pan by a cup.
6 Wrap the field-supplied insulation around the drain pipe
running through the indoor.
7 When installing the pipe, do not tie the drain pipe and
refrigerant pipe together.
!
C A U T I O N
•
Pay attention not to splash water to the electrical parts such as the fan
motor or thermistors.
•
When the common drain piping is connected with other indoor units,
the connected position of each indoor unit must be higher than the
common piping. The size of common drain pipe must be large enough
according to the unit size and number of units.
•
Tighten screws according to the following torque.
M3.5: 1.2 N-m
M4: 1.0 to 1.3 N-m
•
Connect earth wires for the outdoor / indoor unit to prevent an
electrical shock or an unexpected accident. The earth resistance
must be less than 1 megohm. The earth work must be performed
by authorized installers.
•
Pay attention not to bite electrical wirings when attaching the
service cover. It may cause an electrical shock or fire.
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