8
(2) Check the smooth draining of the piping on completion of
the installation of the piping.
[Before electrical work]
•
•
A licensed electrical engineering technician must con-
duct electrical wiring work (including grounding work).
If no licensed electrical engineering technician is avail-
able, take steps 3 and 4 after the test operation of the air
conditioner is finished.
•
In order to ensure not to impose tension on the wire connec-
tions, perform clamping securely with the provided clamp (7)
specified in 3 in
10-1 CONNECTING POWER SUPPLY,
GROUND, REMOTE CONTROLLER, AND TRANSMIS-
SION WIRING
.
2.
Check that the el. compo. box lid is closed before turning
the air conditioner ON.
3.
Provide
approximately one liter of water
gradually into
the drain pan through the water inlet on the bottom of the
drain socket or the outlet. Make sure that the water is
not spilled onto the drain pump.
4.
The drain pump will operate with the power turned ON.
Check that the pump drains water smoothly. (The drain
pump will stop automatically in 10 minutes.)
The drainage can be checked with the water level change
in the drain pan through the water inlet.
•
Do not touch the drain pump.
Otherwise, an electric shock may be received.
•
Do not impose external force on the float switch.
Otherwise, a failure may result.
5.
On completion of the drainage check, shut off the power
supply and disconnect the power supply line.
6.
Put the el. compo. box lid to the original position.
[After electrical work]
•
After completion of
8. DUCT WORK
provide
approximately
one liter of water
gradually into the drain pan through the
water inlet on the bottom of the drain socket, and check that
the water is drained while the air conditioner is in cooling
operation according to
11. FIELD SETTING and 12. TEST
OPERATION .
Make sure that the water is not spilled onto
the electric parts of the drain pump and others.
Ceiling slab
1 - 1.5 m
300 mm max.
700 mm max.
Support bracket
Drain-up piping
(field supply)
Adjustable
(467 mm max.)
Metal clamp (1) (accessory)
Drain hose (2) (accessory)
Drain hose (2) (accessory)
Horizontal or
upward slope
If there is an air bank, noise may be generated
as a result of a water backflow when the drain
pump comes to a stop.
Locate the drain hose horizontally
or with a little upward gradient.
!
CAUTION
1.
Remove the el. compo. box lid,
and connect the single-
phase electric wires to terminals L and N of the termi-
nal block and the ground wire to the ground terminal
.
Perform wiring according to
10-1 CONNECTING POWER
SUPPLY, GROUND, REMOTE CONTROLLER, AND
TRANSMISSION WIRING
in
10. WIRING EXAMPLE
AND HOW TO SET THE REMOTE CONTROLLER
.
!
CAUTION
!
CAUTION
(3) Be sure to conduct heat insulation work on the following
portions, or otherwise water leakage may occur as a result of
dew condensation.
•
Drain piping indoors
•
Drain socket
Water inlet
Drain so
c
ket
Drain pan
El. compo. box lid
Terminal block for
power supply
Screw
El. compo. box
Refrigerant piping
Air outlet
Socket for maintenance
(with rubber cap)
Drain pump position
Water inlet lid
Plastic water container
Metal clamp (1)
(accessory)
•
On completion of the drainage check, refer to the following
illustration, and use the provided large sealing pad (
5
) and
heat insulate the metal clamp (1) and drain hose (2).
Make sure that the
seam faces upward.
Large sealing pad (
5
)
(accessory)
4 mm max.
Pay utmost attention to the following items and conduct
the duct work.
•
Check that the duct will not be in excess of the setting range
of external static pressure for the unit. (Refer to the technical
datasheet for the setting range. Each model has each setting
range of external static pressure.)
8
.
DUCT
WORK
