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• Do not deflect the drain hose (1) inside of the indoor unit.
(Refer to Fig. 27)
(It may cause abnormal noise such as bubbling noise.)
(If the drain hose (1) is deflected, it may damage the suc-
tion grille.)
• Install supports at a distance of 1 to 1.5m so that the pip-
ing may not deflect. (Refer to Fig. 23)
CAUTION
To prevent dust from entering the indoor unit, cover the gap
with the drain piping by putty or insulation (field supply) so
that no clearance is made.
However, when putting piping and remote controller wiring
through the same hole, cover the gap between the through
cover and the piping after ‘‘8. ELECTRIC WIRING WORK’’
is completed.
CAUTION
To avoid the attached drain hose (1) getting excessive
force, do not bend nor twist it. (It may cause water leakage.)
When conducting the centralized drain piping, follow the
instructions in Fig. 28. For the diameter of the centralized
drain piping, select the diameter matching the capacity of
the indoor unit to be connected. (Refer to technical guide-
book.).
• Connecting drain piping.
Do not connect the drain piping directly to the sewage
that gives off ammonia odor. The ammonia in the sewage
may go through the drain piping and corrode the heat
exchanger of the indoor unit.
• When installing the drain pump kit (optional accessory),
also refer to the installation manual included to the drain
pump kit.
(2) After piping is finished, check if the drain flows smoothly.
• Gradually put about 0.6 liter of water for drain confirma-
tion into the drain pan from the air outlet.
(Refer to Fig. 29)
• After the drain piping work, install the stay for packing and
delivering (reinforcing plate), which was removed in the
section of ‘‘6. REFRIGERANT PIPING WORK’’.
However, it is not necessary to install the stay for packing
and delivering at the right side (reinforcing plate).
(Refer to Fig. 30)
8.
ELECTRIC WIRING WORK
8-1
GENERAL INSTRUCTIONS
• Make certain that all electric wiring work is carried out by
qualified personnel according to the applicable legislation
and this installation manual, using a separate circuit. Insuffi-
cient capacity of the power supply circuit or improper electri-
cal construction may lead to electric shocks or a fire.
• Make sure to install an earth leakage breaker in accordance
with applicable legislation. Failure to do so may cause elec-
trical shock and a fire.
• Do not turn on the power supply (of the indoor unit) until all
the installation work is completed.
• Make sure to earth the air conditioner.
Earthing resistance should be according to applicable legis-
lation.
• Do not connect the earth wiring to gas or water piping, light-
ning conductor or telephone earth wiring.
• Gas piping ........... Ignition or explosion may occur if the
gas leaks.
• Water piping ........ Hard vinyl tubes are not effective
earths.
• Lightning conductor or telephone earth wiring
Electric potential may rise abnormally if struck by a light-
ning bolt.
• For electric wiring work, refer to also the “WIRING DIA-
GRAM” attached to the control box cover.
• Never connect the power supply wiring to the terminal block
for remote controller wiring, or otherwise the entire system
may be damaged.
• Carry out installation and wiring of the remote controller
according to the “installation manual” attached to the remote
controller.
• Do not touch the Printed Circuit Board assy during the wiring
work. Otherwise, it may cause damage.
• If the supply cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualified persons
in order to avoid a hazard.
Do not deflect
Fig. 27
Centralized drain piping
If water stagnates in the
drain piping, the piping
may be clogged.
100mm or more
Install with downward inclination
of 1/100 or more so that no air
will be stagnated.
Fig. 28
Plastic container for pouring water
(Tube length of 100mm is necessary)
100mm
or more
Air outlet
Fig. 29
Screw
Stay for packing and delivering
(reinforcing plate)
Fig. 30
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Summary of Contents for FHA100AVEB
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