4 Installation
Installation manual
7
RXF50+60A2V1B
R32 split series
3P512025-3 – 2017.11
b
a
b
c
a
Baffle plate
b
Prevailing wind direction
c
Air outlet
The outdoor unit is designed for outdoor installation only, and for
ambient temperatures ranging from –10 to 46°C in cooling mode and
from –15 to 24°C in heating mode.
3.1.2
Additional installation site requirements
of the outdoor unit in cold climates
Protect the outdoor unit against direct snowfall and take care that the
outdoor unit is NEVER snowed up.
a
b
c
c
d
a
Snow cover or shed
b
Pedestal
c
Prevailing wind direction
d
Air outlet
In any case, provide at least
300
mm of free space below the unit.
Additionally, make sure the unit is positioned at least
100
mm above
the maximum expected level of snow. See
"4.2
Mounting the
outdoor unit" on page
7
for more details.
In heavy snowfall areas it is very important to select an installation
site where the snow will NOT affect the unit. If lateral snowfall is
possible, make sure that the heat exchanger coil is NOT affected by
the snow. If necessary, install a snow cover or shed and a pedestal.
3.2
Preparing refrigerant piping
3.2.1
Refrigerant piping requirements
▪
Piping material:
Phosphoric acid deoxidised seamless copper.
▪
Piping diameter:
Liquid piping
Ø6.4 mm (1/4")
Gas piping
Ø12.7 mm (1/2")
▪
Piping temper grade and thickness:
Outer diameter
(Ø)
Temper grade
Thickness (t)
(a)
6.4 mm (1/4")
Annealed (O)
≥0.8 mm
t
Ø
12.7 mm (1/2")
(a) Depending on the applicable legislation and the unit's
maximum working pressure (see "PS High" on the unit
name plate), larger piping thickness might be required.
3.2.2
Refrigerant piping length and height
difference
What?
Distance
Maximum allowable pipe length
30 m
Minimum allowable pipe length
1.5 m
Maximum allowable height distance
20 m
3.2.3
Refrigerant piping insulation
Pipe outer diameter
(Ø
p
)
Insulation inner
diameter (Ø
i
)
Insulation thickness
(t)
6.4 mm (1/4")
8~10 mm
≥10 mm
12.7 mm (1/2")
14~16 mm
Ø
i
Ø
i
t
Ø
p
Ø
p
If the temperature is higher than 30°C and the humidity is higher
than
RH
80%, the thickness of the insulation materials should be at
least
20
mm to prevent condensation on the surface of the
insulation.
4
Installation
4.1
Opening the units
4.1.1
To open the outdoor unit
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
1×
1
2
2
4.2
Mounting the outdoor unit
4.2.1
To provide the installation structure
Prepare 4 sets of M8 or M10 anchor bolts, nuts and washers (field
supply).
