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b. Items to be checked at time of delivery
Also review the “SAFETY CONSIDERATIONS”
c. Points for explanation about operations
2-4
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
Please attach additional thermal insulation material to the unit
body when it is believed that the relative humidity in the ceiling
exceeds 80%. Use glass wool, polyethylene foam, or similar with
a thickness of 3/8in. or more as thermal insulation material.
(1) Select an installation site where the following conditions are
fulfilled and that meets with 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 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
abd 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. 1)
• Where piping between indoor and outdoor units is possi-
ble within the allowable limit. (Refer to the installation
manual of the outdoor unit.)
CAUTION
• Install the indoor and outdoor units, power supply wiring and
connecting wires at least 3.3ft. away from televisions or
radios in order to prevent image interference or noise.
(Depending on the radio waves, a distance of 3.3ft. may not
be sufficient enough to eliminate the noise.)
(2) 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.
4.
PREPARATIONS BEFORE INSTALLATION
(1) Relative positions of indoor unit and suspension bolt.
(Refer to Fig. 2)
(2) Install a canvass duct to the air discharge outlet and air inlet
so that vibration from the machine body isn’t transmitted to
the duct or ceiling.
You should also apply acoustic (insulation material) to the
inside of the duct, and vibration insulation rubber to the sus-
pension bolts.
(3) Install suspension bolts.
(Use bolts of 3/8in. diameter.)
• Install the equipment where supporting structures are
strong enough to bear the equipment’s weight. Use
embedded inserts or anchor bolts with new buildings and
hole-in-anchors with old buildings.
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 instruc-
tion 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
instruction manual.
Fig. 1
Min. 25-9/16
(service space)
18-1/2
(length: in.)
Fig. 2
Indoor unit
Air outlet
Inspection hatch
23-5/8
51
Air inlet
Approx.
5-7/8
43-5/16
43-5/16 or more
45-3/16
54-5/16
(service space)
Suspension
bolt (× 4)
(length: in.)
25-9/16 or more
(service space)
Anchor
Indoor unit
Long nut or turn-buckle
Installation example
Note) All the above parts are field supplied.
Suspension bolt
Ceiling slab
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