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English
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OPTIONAL ACCESSORIES
• There is one type of remote controller: wired.
NOTE
• If you wish to use a remote controller that is different from the
above, select a suitable remote controller after consulting
catalogs and technical materials.
FOR THE FOLLOWING ITEMS, TAKE SPECIAL
CARE DURING CONSTRUCTION AND CHECK
AFTER INSTALLATION IS FINISHED.
a. Items to be checked after completion of work
Also review the SAFETY CONSIDERATIONS.
b. Items to be checked at time of delivery
c. Points for explanation about operations
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NOTE TO INSTALLER
• Be sure to instruct customers how to properly operate the
unit (especially cleaning filters, operating different functions,
and adjusting the temperature) by having them carry out
operations themselves while looking at the manual.
3.
SELECTING INSTALLATION SITE
Hold the hanging brackets in the case of moving the
indoor and outdoor units at the time of and after opening
the packages. Do not impose undue force on other parts,
such as the refrigerant piping, drain piping, or flanges, in
particular.
Add heat insulation material to the indoor unit if the tem-
perature above the ceiling is likely to exceed 86°F (30°C)
and a relative humidity of 80%.
Make sure that the insulation material is made of glass wool
or polyethylene foam, has a minimum thickness of 3/8 in.
(10 mm), and can be accommodated in the opening on the
ceiling.
(1) Select an installation site where the following conditions are
fulfilled and that meets with your customer’s approval.
• A place where cool (warm) air is delivered to the entire
room.
• Where nothing blocks the air passage.
• Where condensate can be properly drained.
• If supporting structural members are not strong enough
to take the unit’s weight, the unit could fall out of place
and cause serious injury.
• Where the false ceiling is not noticeably on an incline.
• Where there is no risk of flammable gas leakage.
• Where sufficient clearance for maintenance and service
can be ensured.
(Refer to Fig. 2-1)
• Where piping between indoor and outdoor units is possi-
ble within the allowable limit. (Refer to the installation
manual of the outdoor unit.)
Items to be checked
If not properly done, what is
likely to occur.
Check
Are the indoor and outdoor
units fixed firmly?
The units may drop, vibrate
or make noise.
Was the installation of the
outdoor unit completed?
The unit may malfunction or
the components burn out.
Is the gas leak test
finished?
No cooling or heating.
Is the unit fully insulated?
(Refrigerant piping, drain
piping, and duct)
Condensate water may drip.
Dose drainage flow
smoothly?
Condensate water may drip.
Does the power supply volt-
age conform to the indica-
tion on the name plate?
The unit may malfunction or
the components burn out.
Are wiring and piping
correct?
The unit may malfunction or
the components burn out.
Is the air conditioner prop-
erly grounded?
Dangerous in case of cur-
rent leakage.
Is wiring size according to
specifications?
The unit may malfunction or
the components burn out.
Is something blocking the
air outlet or inlet of either
the indoor or outdoor units?
No cooling or heating.
Did you set the external
static pressure?
No cooling or heating.
Are refrigerant piping length
and additional refrigerant
charge noted down?
The refrigerant charge in
the system is not clear.
Did you check that no wiring
connection screws were
loose?
Electric shock or fire.
Items to be checked
Check
Are you sure the control box cover, air filter, air inlet grille,
and air outlet grille are mounted?
Did you explain about operations while showing the opera-
tion manual to your customer?
Did you deliver the operation manual along with the instal-
lation manual to the customer?
Did you explain the customer the handling and cleaning
methods of the field supplies (e.g., the air filter, air inlet
grilles, and air outlet grille)?
Did you deliver instruction manual, if any, for the field sup-
plies to the customer?
The items with
WARNING and
CAUTION marks in the operation
manual are the items pertaining to possibilities for bodily injury and
material damage in addition to the general usage of the product.
Accordingly, it is necessary that you make a full explanation about the
described contents and also ask your customers to read the opera-
tion manual.
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