English
5
5.
INDOOR UNIT INSTALLATION
〈
It may be easier to install accessories (sold separately)
before installing the indoor unit. Refer to the installation
manuals provided to the accessories as well.
〉
Be sure to use the accessories and specified parts for
installation work.
(1) Temporally install the indoor unit.
• Connect the hanging brackets to the hanging bolts. Be
sure to use and tighten the nut and washer (11) for each
hanging bracket from both upper and lower sides of the
hanging bracket.
(Refer to Fig. 3)
At that time, the fall of
the washer (11) for the hanging bracket can be pre-
vented if the washing fixing plate (9) is used.
CAUTION
•
During the installation work, perform the curing of the air
outlet and protect the resin drain pan of the indoor unit
from the intrusion of foreign substances, such as weld-
ing spatters.
Otherwise, water leakage may occur as a result of damage,
such as hole damage, to the resin drain pan.
(2) Make adjustments so that the unit will be in the right posi-
tion.
(3) Check the level of the unit.
(4) Remove the washer fixing plates for the falling prevention of
the washers for the hanging brackets, tighten the nuts on
the upper side, and securely fix the unit.
CAUTION
• Use the level and check that the unit is installed horizontally.
(4-directions)
• In the case of using a vinyl tube in place of the level, put the
both edges of the vinyl tube in close contact with the bottom
of the product to make levelness adjustment.
If the unit is installed at a slant with the drain pipe side set
high, in particular, the float switch will not operate normally
and water leakage may result.
6.
REFRIGERANT PIPING WORK
〈
As for the refrigerant piping of the outdoor unit, refer to the
installation manual provided to the outdoor unit.
〉
〈
Perform heat insulation work on both gas piping and liquid
piping, or otherwise water leakage may result.
〉
〈
Use the insulation material that withstands a temperature
of 120°C.
〉
〈
Reinforce the insulation material for the refrigerant piping if
the ambient temperature is high, or otherwise dew conden-
sation may result on the surface of the insulation material.
〉
〈
Make sure that the refrigerant is R410A before refrigerant
piping work. If the refrigerant is different, the air condi-
tioner will not operate normally.
〉
CAUTION
This product uses new refrigerant (R410A) only. Be sure to
keep the items on the right-hand side and conduct the
installation work.
•
Use a dedicated pipe cutter and flare tool for R410A.
•
When connecting the flare, apply ether oil or ester oil
only to inner side of the flare.
•
Be sure to use the flare nut provided with the unit. (Do
not use a different flare nut (such as a type-1 flare nut),
or otherwise refrigerant leakage may result.)
•
Perform the curing of the piping with pinching or taping
of the piping in order to prevent the intrusion of dirt,
dust, and moisture into the piping.
CAUTION
•
Be sure to use the specified type of refrigerant for the
refrigeration cycle and do not contaminate the refriger-
ant with air.
•
Ventilate the room in case of refrigerant leakage during
installation work.
(1) Connect the piping.
• The outdoor unit is filled with refrigerant.
• When connecting or disconnecting piping to or from the
unit,
be sure to use two spanners and two torque
wrenches. (Refer to Fig. 4)
Washer (11) (accessory)
Part to be procured in the field
Washer fixing plate (9)
(accessory)
Insert
Tighten from above and below
(Double nut)
[Fixing hanging brackets]
[Fixing method of washers]
Fig. 3
Nut on the upper side
Hanging bracket
Bottom of product
Level
Vinyl tube
Torque wrench
Spanner
Piping union
Flare nut
Fig. 4
01_EN_3PN06583-7N.fm Page 5 Saturday, February 28, 2009 3:02 PM
