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4.3.4 Mounting the Indoor Unit
(1) Mount the nuts and washers to the suspension bolts.
Suspension Bolt (field-supplied)
Nut (field-supplied)
(The nut is unnecessary if the unit
is installed against the ceiling)
*Washer with Insulation (accessory)
Suspension Blacket (attached indoor unit)
(2) Lift the Indoor Unit by hoist, and do not put any force on the resin covers.
(3) Secure the indoor unit using the nuts, washers.
(4) Adjusting of the Unit Level
(a) Check to ensure that foundation is flat, taking into account the maximum foundation gradient.
Install the unit with an incline of at least 10mm towards the rear of the unit to ensure proper
condensate drainage.
Install the unit with an incline of at least 10mm towards the drain outlet side to ensure proper
condensate discharge.
View from Right
(b) Tighten the bolts of the sling nuts with the suspension brackets after adjustment is completed.
5. Refrigerant Piping Work
DANGER
!
•
Use refrigerant R32 in the refrigerant cycle. Do not charge oxygen, acetylene or other flammable and
poisonous gases into the refrigerant cycle when performing a leakage test or an air-tight test. These
types of gases are extremely dangerous and cause an explosion. It is recommended that dry nitrogen
be used for these types of tests.
Washer (accessory)
Nut (field-supplied)
Fig.4.5 Mounting Nuts and Washers
Fig.4.6 Inclination of Unit for Drain for ceiling installation
(mm)
View from Front
-11-
5. Refrigerant Piping Work
drain piping
connection
side
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