5
Ducted Air Conditioners
Installation Manual
NOTE TO THE INSTALLER
Be sure to instruct the customer how to properly operate the system (especially cleaning filters, operating the
different functions and adjusting the temperature). It is recommended to ask the customer to carry out the
operations themselves while you instruct them and refer them to the applicable place in the operation manual.
FOR THE FOLLOWING ITEMS, TAKE SPECIAL CARE DURING CONSTRUCTION AND CHECK
AFTER INSTALLATION IS FINISHED.
(1) Items to be checked after completion of work.
Items to be checked
If not properly done, what is likely to occur
Check
Is the indoor unit fixed firmly?
The unit may drop, vibrate or make noise.
Is the gas leak test finished?
It may result in insufficient cooling or heating.
Does the unit require external insulation?
Condensate water may drip.
Does drainage flow smoothly?
Condensate water may drip.
Does the power supply voltage correspond to that shown
on the name plate?
The unit may malfunction or the components burn out.
Is the wiring and piping correct?
The unit may malfunction or the components burn out.
Is the unit safely grounded?
Dangerous during electric leakage.
Is the wiring size according to specification?
The unit may malfunction or the components burn out.
Is something blocking the air outlet or inlet of either the
indoor or outdoor units?
It may result in insufficient cooling or heating.
Are refrigerant piping length and additional refrigerant
charge noted down?
The refrigerant charge in the system is not clear.
Is the indoor unit positioned so that it is not in contact
with parts of the ceiling?
Vibration and noise can be transmitted into building.
Is the airflow within specification?
Poor performance or malfunction.
Is an air filter installed in the return air?
Blocked heat exchanger causing malfunction or
compressor failure.
Is an external drain tray installed?
Condensate water may drip.
(2) Items to be checked at completion
•
Did you show the customer how to operate the system while referring to the operation manual?
Detailed explanation about operation.
Review the safety consideration.
•
Did you hand the operation manual over to the customer?
SELECTING INSTALLATION SITE
(1) Select an installation site where the following
conditions are fulfilled and that meets your
customer’s
approval.
•
Where the indoor unit and remote controller are
not exposed to rain or moisture.
•
Where the casing of the unit does not contact
parts of the ceiling.
•
Where optimum air distribution can be ensured.
•
Where nothing blocks the air passage.
•
Where condensate can be properly drained.
•
Where the structure is strong enough to safely
bear the indoor unit weight.
•
Where sufficient clearance for maintenance and
service can be ensured. (see Fig. 1)
•
Where there is no risk of flammable gas leakage.
•
Where piping between indoor and outdoor units is
possible within the allowable limit. (Refer to the
installation manual for the outdoor unit.)
CAUTION
•
Keep the indoor unit, outdoor unit, power supply
wiring and transmission wiring at least 1 metre
away from televisions and radios. This is to
prevent image interference and noise in those
electrical appliances. (Noise may be generated
depending on the conditions under which the
electrical wave is generated, even if 1 metre is kept.)
(2) When using suspension bolts for installation, hanging
brackets should be installed. Confirm that the
ceiling is strong enough to support the weight of
the indoor unit.
