7 Charging refrigerant
Installation manual
13
AZAS100~140MUV/Y
Sky Air Active-series
4P743507-1 – 2023.08
6 HP
b
c
a
a
Internal service port
b
Stop valve with service port (liquid)
c
Stop valve with service port (gas)
Typical workflow – Completely recharging refrigerant typically
consists of the following stages:
1 Determining how much refrigerant to charge.
2 Charging refrigerant.
3 Filling in the fluorinated greenhouse gases label, and fixing it to
the inside of the outdoor unit.
7.2
About the refrigerant
This product contains fluorinated greenhouse gases. Do NOT vent
gases into the atmosphere.
Refrigerant type: R32
Global warming potential (GWP) value: 675
Periodical inspections for refrigerant leaks may be required
depending on the applicable legislation. Contact your installer for
more information.
WARNING: MILDLY FLAMMABLE MATERIAL
The refrigerant inside this unit is mildly flammable.
WARNING
▪ The refrigerant inside the unit is mildly flammable, but
normally does NOT leak. If the refrigerant leaks in the
room and comes in contact with fire from a burner, a
heater, or a cooker, this may result in fire, or the
formation of a harmful gas.
▪ Turn OFF any combustible heating devices, ventilate
the room, and contact the dealer where you purchased
the unit.
▪ Do NOT use the unit until a service person confirms
that the part from which the refrigerant leaked has been
repaired.
WARNING
The appliance shall be stored in a room without
continuously operating ignition sources (example: open
flames, an operating gas appliance or an operating electric
heater).
WARNING
▪ Do NOT pierce or burn refrigerant cycle parts.
▪ Do NOT use cleaning materials or means to accelerate
the defrosting process other than those recommended
by the manufacturer.
▪ Be aware that the refrigerant inside the system is
odourless.
7.3
Completely recharging refrigerant
7.3.1
To determine the complete recharge
amount
To determine the complete recharge amount (kg)
Model
Length
5~30 m
AZAS100-125
2.6 kg
AZAS140
2.9 kg
7.3.2
To activate/deactivate the vacuum mode
field setting
Description
To perform vacuum drying or a complete recharge of the outdoor
unit’s internal refrigerant piping it is necessary to activate the
vacuum mode which will open required valves in the refrigerant
circuit so the vacuuming process or recharge of refrigerant can be
done properly.
To activate vacuum mode:
Activating the vacuum mode is done by operating the push buttons
BS* on the PCB (A1P) and reading the feedback from the 7‑segment
displays.
Operate the switches and push buttons with an insulated stick (such
as a closed ball-point pen) to avoid touching of live parts.
1
When the unit is powered on and not running, hold down the
BS1 pushbutton for 5 seconds.
Result:
You will reach the setting mode, the 7 segment display
will show '2 0 0'.
2
Press the BS2 button until you reach page
2–28
.
3
When
2–28
is reached, press the BS3 button once.
4
Change the setting to '
1
' by pressing the BS2 button once.
5
Push the BS3 button once.
6
When the display is not blinking anymore, press the BS3 button
again to activate vacuum mode.
To deactivate vacuum mode:
After charging or vacuuming the unit, please deactivate the vacuum
mode by changing the setting back to '
0
'.
Make sure to reattach the electronic component box cover and to
install the front cover after the job is finished.
NOTICE
Make sure that all outside panels, except for the service
cover on the switch box, are closed while working.
Close the lid of the switch box firmly before turning on the
power.
