Daikin FXMQ20PAVE Manual De Instalación página 10

• Be sure to use the drain hose (2) and metal clamp (1).
Insert the drain hose (2) deep into the base of the
drain socket, and securely fasten the metal clamp (1)
within the taped part on the insertion front end of the
hose.
Be sure to fasten the screw of the metal clamp (1) until
the margin of the screw thread decreases to 4 mm or
less.
Metal clamp (1)
(accessory)
Tape
NOTE
Be sure to follow the instructions as below.
• Do not connect the drain piping directly to a sewer that
smells of ammonia.
The ammonia in the sewer may reach through the drain
piping and corrode the heat exchanger of the indoor unit.
• Do not bend or twist the provided drain hose (2) in order
not to impose excessive force on the hose. (Doing so
may result in water leakage.)
• Take the procedure shown in the following illustration to
perform concentrated drain piping.
Concentrated drain piping
Maintain a downward slope of at least
1/100 so that no air bank will be formed.
The drain piping will be clogged with water
and water leakage may result if the water is
accumulated in the drain piping.
• Select the diameter of the concentrated drain piping to
suit the capacity of equipment connecting to the
concentrated drain piping (see the equipment design
sheet).
Ceiling slab
300 mm max.
Metal clamp (1) (accessory)
Drain hose (2) (accessory)
Locate the drain hose horizontally
or with a little upward gradient.
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.
8
Drain hose (2)
(accessory)
1 - 1.5 m
Support bracket
Drain-up piping
(field supply)
Adjustable
(467 mm max.)
Drain hose (2) (accessory)
Horizontal or
upward slope
(2) Check the smooth draining of the piping on completion of
the installation of the piping.
[Before electrical work]
CAUTION
• A licensed electrical engineering technician must conduct
electrical wiring work (including grounding work).
• If no licensed electrical engineering technician is
available, take steps 3 and 4 after the test operation of
the air conditioner is finished.
1. Remove the control box lid, and connect the single-
phase electric wires to terminals L and N of the terminal
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
• In order not to impose tension on the wire connections,
perform clamping securely with the provided clamp (8)
specified in 3 in 10-1 CONNECTING POWER SUPPLY,
GROUND, REMOTE CONTROLLER, AND TRANSMISSION
WIRING.
2. Check that the control 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.
CAUTION
• 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 control 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.
(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
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