6 Installation
Installer reference guide
22
RZAG71~Y1
Sky Air Alpha-series
4P486046-1A – 2017.08
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 electrical component box, are closed while
working.
Close the lid of the electrical component box firmly before
turning on the power.
6.6.10
To completely recharge refrigerant
WARNING
▪ Only use R32 as refrigerant. Other substances may
cause explosions and accidents.
▪ R32 contains fluorinated greenhouse gases. Its global
warming potential (GWP) value is 675. Do NOT vent
these gases into the atmosphere.
▪ When charging refrigerant, always use protective
gloves and safety glasses.
CAUTION
To avoid compressor breakdown, do NOT charge more
than the specified amount of refrigerant.
Prerequisite:
Before completely recharging refrigerant, make sure
the system is pumped down, the outdoor unit's
external
refrigerant
piping is checked (leak test, vacuum drying) and vacuum drying on
the outdoor unit's
internal
refrigerant piping is performed.
1
If not already done (for vacuum drying of the unit), activate the
vacuum mode (see
"6.6.9 To activate/deactivate the vacuum
mode field setting" on page 21
)
2
Connect the refrigerant cylinder to the service port of the liquid
stop valve.
3
Open the liquid stop valve.
4
Charge the complete refrigerant amount.
5
Deactivate the vacuum mode (see
the vacuum mode field setting" on page 21
6
Open the gas stop valve.
6.6.11
To fix the fluorinated greenhouse gases
label
1
Fill in the label as follows:
b
Contains fluorinated greenhouse gases
2
1
1
1
2
2
kg
tCO
2
eq
GWP × kg
1000
=
=
+
kg
=
kg
=
GWP: XXX
RXXX
a
f
c
d
e
a
If a multilingual fluorinated greenhouse gases label is
delivered with the unit (see accessories), peel off the
applicable language and stick it on top of
a
.
b
Factory refrigerant charge: see unit name plate
c
Additional refrigerant amount charged
d
Total refrigerant charge
e
Greenhouse gas emissions
of the total refrigerant charge
expressed as tonnes CO
2
-equivalent
f
GWP = Global warming potential
NOTICE
In Europe, the
greenhouse gas emissions
of the total
refrigerant charge in the system (expressed as tonnes
CO
2
-equivalent) is used to determine the maintenance
intervals. Follow the applicable legislation.
Formula to calculate the greenhouse gas emissions:
GWP value of the refrigerant × Total refrigerant charge [in
kg] / 1000
2
Fix the label on the inside of the outdoor unit. There is a
dedicated place for it on the wiring diagram label.
6.7
Connecting the electrical wiring
6.7.1
About connecting the electrical wiring
Typical workflow
Connecting the electrical wiring typically consists of the following
stages:
1
Making sure the power supply system complies with the
electrical specifications of the units.
2
Connecting the electrical wiring to the outdoor unit.
3
Connecting the electrical wiring to the indoor units.
4
Connecting the main power supply.
6.7.2
About electrical compliance
RZAG71~140M7V1B
Equipment complying with EN/IEC 61000‑3‑12 (European/
International Technical Standard setting the limits for harmonic
currents produced by equipment connected to public low-voltage
systems with input current >16 A and ≤75 A per phase.).
RZAG71~140M7Y1B
Equipment
complying
with
EN/IEC
61000‑3‑2
(European/
International Technical Standard setting the limits for harmonic
currents produced by equipment connected to public low-voltage
systems with input current ≤16 A per phase.).
6.7.3
Precautions when connecting the
electrical wiring
INFORMATION
Also read the precautions and requirements in the
following chapters:
▪ General safety precautions
▪ Preparation
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
CAUTION
For use of units in applications with temperature alarm
settings it is recommended to foresee a delay of 10
minutes for signalling the alarm in case the alarm
temperature is exceeded. The unit may stop for several
minutes during normal operation for "defrosting the unit", or
when in "thermostat stop" operation.
WARNING
Do not interchange the supply conductors L and the
neutral conductor N.
