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2. Items to be checked at time of delivery

∗

Also review the “SAFETY PRECAUTIONS”

Points for explanation about operations

2-4 NOTE TO THE 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.

SELECTING INSTALLATION SITE
AND AIR FLOW DIRECTION

3-1 Select an installation site where the following

conditions are fulfilled and that meets your
customer’s approval.

• In the upper space (including the back of the ceiling) of the

indoor unit where there is no possible dripping of water
from the refrigerant pipe, drain pipe, water pipe, etc.

• Where optimum air distribution can be ensured.
• Where nothing blocks air passage.
• Where condensate can be properly drained.
• Where the ceiling is strong enough to bear the indoor

unit weight.

• Where the false ceiling is not noticeably on an incline.
• Where sufficient clearance for maintenance and service

can be ensured.

• Where there is no risk of flammable gas leakage.
• Where piping between indoor and outdoor units is pos-

sible within the allowable limit.
(Refer to the installation manual for the outdoor unit.)

[CAUTION]

Only use the included parts or parts which match the speci-
fications when installing the unit.

• Install the indoor unit no less than 2.5m above the floor.

Where unavoidably lower, take what measures are nec-
essary to keep hands out of the air outlet.

** Space is required to attach/detach corner covers.

3-2 Air flow direction

Select the air flow direction that best suits the unit’s location. 2-
way and 3-way air flow must be set from the remote controller.
For details, see FIELD SETTING.

NOTE

• Restrictions are placed on piping direction, therefore select

flow direction from the below patterns.

[Air flow patterns] (Refer to Fig. 1)

(IIlustrations seen from ceiling)
A, B, C and D indicate drain pans.

Refrigerant pipe direction

To the rear (Straight pipe)

To the right (Elbow required)

Upward running refrigerant pipes are possible in all patterns.

3-3 Use suspension bolts for installation. Check

whether the ceiling is strong enough to support
the weight of the unit or not. If there is a risk,
reinforce the ceiling before installing the unit.

(Installation pitch is marked on the paper pattern for
installation. Refer to it to check for points requiring rein-
forcing.)

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 out-
door units?

It may result in insuffi-
cient cooling.

Are refrigerant piping
length and additional
refrigerant charge noted
down?

The refrigerant charge in
the system is not clear.

Items to be checked

Check

Did you explain about operations while showing the
instruction manual to your customer?

Did you hand the instruction manual over to your
customer?

The items with

WARNING and

CAUTION marks in

the instruction manual are the items pertaining to possi-
bilities 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 instruction manual.

Space required for installation

≥

1500

≥

1000

≥

2500

≥

1500

≥

∗∗

≥