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12.1.3.2.3 Refrigerant piping
See Refrigerant piping under Exposed Installation.
12.1.3.3 Concealed installation
Only item peculiar to this installation method are given here. See Exposed installation for additional instructions.
12.1.3.3.1 Preparation
Install the unit according to the instructions below. Failure to do so may cause lead to both cooling and heating
failure and the condensation inside the house.
1 Allow enough space between the main unit and ceiling not to obstruct the flow of cool/warm air.
2 Use remote controller to change the upward air flow limit restriction. When the unit in standby mode, follow
the steps below:
o Press continuously for more than 5 seconds to enter special setting mode.
o Press to choose function 69, and then press or to set “01”
o Press to activate “Up/down air swing upper limit restriction”
12.1.3.3.2 Refrigerant piping
Left bottom piping Right bottom piping
70
10
80
Hole location
5
Wall
45
50
Wall
Right/left side piping
Unit piping position
(Unit: mm)
SET
T 5secs
Special setting mode
(Function
no.)
(Options)
Activate or deactivate
“Air swing upper limit
restriction”
CAUTION
If there is an obstruction to upward air ow, it is recommanded to turn on upward air ow limit restriction. Failure to
do so may cause incomplete cooling/heating and formation of condensation inside the house.
50 or more 50 or more
70 or more
Left bottom piping Right bottom piping
45
60
70
Hole location
Right/left side piping
45
35
80
(Unit: mm)
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