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Refrigerant piping installation (see
installation" [ 4 17])
WARNING
▪ Only use R744 (CO
may cause explosions and accidents.
▪ When installing, charging refrigerant, maintaining or
performing service, ALWAYS use personal protective
equipment, such as safety shoes, safety gloves and
safety glasses.
▪ If the unit is installed indoors (for example, in a
machine room), ALWAYS use a portable CO
▪ If the front panel is open, ALWAYS beware of the
rotating fan. The fan will continue rotating for a while,
even after the power switch has been turned off.
CAUTION
Do NOT reuse piping from previous installations.
CAUTION
Install the refrigerant piping or components in a position
where they are unlikely to be exposed to any substance
which may corrode components containing refrigerant,
unless the components are constructed of materials that
are inherently resistant to corrosion or are suitably
protected against corrosion.
WARNING
▪ Use K65 piping for high-pressure applications with a
working pressure of 120 bar or 90 bar, depending on its
location in the system.
▪ Use K65 unions and fittings approved for a working
pressure of 120 bar or 90 bar, depending on its location
in the system.
▪ Only brazing is allowed for connection of pipes. No
other types of connections are allowed.
▪ Expanding of pipes is not allowed.
INFORMATION
To complete the refrigerating system, additional charging
of
refrigerant
is
refrigerant" [ 4 31].
For the user
3
User safety instructions
Always observe the following safety instructions and regulations.
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit and capacity up unit
4P605461-1B – 2020.08
"13 Piping
) as refrigerant. Other substances
2
detector.
2
required.
See
"15
Charging
3 User safety instructions
Electrical installation (see
"14 Electrical
WARNING
▪ If the power supply has a missing or wrong N-phase,
equipment might break down.
▪ Establish proper earthing. Do NOT earth the unit to a
utility pipe, surge absorber, or telephone earth.
Incomplete earthing may cause electrical shock.
▪ Install the required fuses or circuit breakers.
▪ Secure the electrical wiring with cable ties so that the
cables do NOT come in contact with sharp edges or
piping, particularly on the high-pressure side.
▪ Do NOT use taped wires, stranded conductor wires,
extension cords, or connections from a star system.
They can cause overheating, electrical shock or fire.
▪ Do NOT install a phase advancing capacitor, because
this unit is equipped with an inverter. A phase
advancing capacitor will reduce performance and may
cause accidents.
WARNING
▪ All wiring MUST be performed by an authorised
electrician and MUST comply with the applicable
legislation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on-site and all electrical
construction
MUST
legislation.
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
Use an all-pole disconnection type breaker with at least
3 mm between the contact point gaps that provide full
disconnection under overvoltage category III.
WARNING
If the supply cord is damaged, it MUST be replaced by the
manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
INFORMATION
A wiring diagram can be found on the applicance and its
description of the connections and wiring to external
control devices and supply cord can be found in
"19.3 Wiring diagram: Outdoor
INFORMATION
The method of connection of the appliance to the electrical
supply and interconnection of separate components is
described in
"14.2 Field wiring:
INFORMATION
Details of type and rating of fuses, or rating of circuit
breakers are described in
installation" [ 4 25])
comply
with
the
applicable
unit" [ 4 42].
Overview" [ 4 26].
installation" [ 4 25].
"14 Electrical
Installation and operation manual
5
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