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12. Installation Instruction
12.1 Select the Best Location
12.1.1
Indoor Unit
Do not install the unit in excessive oil fume area
such as kitchen, workshop and etc.
There should not be any heat source or steam
near the unit.
There should not be any obstacles blocking the air
circulation.
A place where air circulation in the room is good.
A place where drainage can be easily done.
A place where noise prevention is taken into
consideration.
Do not install the unit near the door way.
Ensure the spaces indicated by arrows from the
wall, ceiling, fence or other obstacles.
Recommended installation height for indoor unit is
at 1.8 m or more from the floor.
12.1.2
Outdoor Unit
If an awning is built over the unit to prevent direct
sunlight or rain, be careful that heat radiation from
the condenser is not obstructed.
There should not be any animal or plant which
could be affected by hot air discharged.
Keep the spaces indicated by arrows from wall,
ceiling, fence or other obstacles.
Do not place any obstacles which may cause a
short circuit of the discharged air.
If piping length is over the [piping length for
additional gas], additional refrigerant should be
added as shown in the table.
Table A
Piping size
Capacity
Model
W
Gas
(HP)
NZ25***
1.0HP
9.52 mm
"
(3/8
)
NZ35***
1.5HP
12.7 mm
NZ50***
2.0HP
"
(1/2
)
(*) Systems with total refrigerant charge, m
Example: For NZ25***
If the unit is installed at 10 m distance, the quantity of additional refrigerant should be 25 g .... (10-7.5) m × 10 g/m =
25 g.
A
= (m
/ (2.5 × (LFL)
min
c
A
= Required minimum room area, in m
min
m
= Refrigerant charge in appliance, in kg
c
LFL
= Lower flammability limit (0.307 kg/m
h
= Installation height of the appliance (1.8 m for wall mounted)
0
SF
= Safety factor with a value of 0.75
** The required minimum room area, A
A
= m
min
c
The higher value shall be taken when determining the room area.
Max
Std.
Elevation
Length (m)
Liquid
(m)
10
10
6.35 mm
5
"
(1/4
)
15
, lower than 1.84kg are not subjected to any room area requirements.
c
(5/4)
2
× h
))
0
2
3
)
, shall also be governed by the safety factor margin formula below :
min
/ (SF × LFL × h
)
0
12.1.3
50 mm
or more
This illustration is for explanation purposes only.
The indoor unit will actually face a different way.
Min.
Max.
Piping
Additional
Piping
Piping
Length
Refrigerant
Length
Length
for add.
(g/m)
(m)
(m)
gas (m)
3
20
10
3
20
10
3
20
15
** not less than safety factor margin
37
Indoor/Outdoor Unit Installation
Diagram
P
p i
n i
g
i d
e r
t c
o i
n
t A
e t
t n
o i
n
n
t o
up drain hose
(Front side)
Right
Right
Rear
Left
Right
bottom
( * )
(Left and right are identical)
Insulation of piping connections
•
Carry out insulation after
checking for gas leaks and
secure with vinyl tape.
Vinyl tape
Attaching the remote control holder to the wall
Remote control holder fi xing screws 6
Remote
control 3
Remote control holder 5
It is advisable to
avoid more than 2
blockage directions.
For better ventilation
& multiple-outdoor
installation, please
consult authorized
dealer/specialist.
(*) If holder at the rear of
chassis (Refer column
"12.2.3 Indoor Unit Installation" )
need to be used to prop up
the unit, this distance shall
be 65 mm or more.
Max.
Refrigerant
Indoor
2
Charge
A
(m
min
(kg)
7.5
0.95
Not applicable (*)
7.5
0.95
Not applicable (*)
7.5
1.32
Not applicable (*)
o t
b
e
n
d
Installation parts you
should purchase ( )
Installation plate 1
Bushing-Sleeve ( )
Sleeve ( )
Putty ( )
(Gum Type Sealer)
Bend the pipe as
closely on the wall as
possible, but be careful
that it doesn't break.
In case of indoor
power supply
Power supply cord ( )
Flare connection
Vinyl tape (wide) ( )
•
Apply after
carrying out a
drainage test.
•
To carry out the
drainage test,
remove the air
fi lters and pour
water into the heat
exchanger.
Saddle ( )
In case of outdoor
power supply
Power supply cord ( )
Connection cable
Liquid side piping ( )
Gas side piping ( )
Additional drain hose ( )
)
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