4 About the system
Installation and operation manual
8
LRYELRNUN5A7Y1
CO
₂
Conveni-Pack outdoor unit and capacity up unit
4P605461-1B – 2020.08
WARNING
The R744 refrigerant (CO
2
) inside the
unit is odourless, non-flammable and
normally does NOT leak.
If the refrigerant leaks in high
concentrations in the room, it may have
negative effects on its occupants such
as asphyxiation and carbon dioxide
poisoning. 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.
9])
WARNING
Stop operation and shut off the
power if anything unusual occurs
(burning smells etc.).
Leaving the unit running under such
circumstances may cause breakage,
electric shock or fire. Contact your
dealer.
4
About the system
The indoor units can be used for heating/cooling and refrigerating
applications. The type of indoor units which can be used depends on
the outdoor units series.
WARNING
Do NOT modify, disassemble, remove, reinstall or repair
the unit yourself as incorrect dismantling or installation may
cause an electric shock or fire. Contact your dealer.
NOTICE
Do NOT use the system for other purposes. In order to
avoid any quality deterioration, do NOT use the unit for
cooling precision instruments or works of art.
NOTICE
Do NOT use the system for cooling water. It may freeze.
NOTICE
For future modifications or expansions of your system:
A full overview of allowable combinations (for future
system extensions) is available in technical engineering
data and should be consulted. Contact your installer to
receive more information and professional advice.
4.1
System layout
INFORMATION
The following illustration is an example and might NOT
match your system layout.
a
b
e
e
d
c
f
h
i
j
k
h
l
i
j
k
l
g
a
Main outdoor unit (LRYEN10*)
b
Capacity up unit (LRNUN5*)
c
Communication box (BRR9B1V1)
d
Fan (indoor unit for air conditioning)
e
Showcase (indoor unit for refrigeration)
f
Blower coil (indoor unit for refrigeration)
g
Safety valve
h
CO
2
control panel
i
CO
2
detector
j
CO
2
alarm
k
CO
2
ventilator
l
Shut off valve
5
Operation
5.1
Operation range
Use the system in the following temperature ranges for safe and
effective operation.
Refrigeration
A/C cooling
A/C heating
Outdoor
temperature
–20~43°C DB
–5~43°C DB
–20~16°C WB
Indoor
temperature
—
14~24°C WB
15~27°C DB
5.2
Design pressure
Always keep the following design pressures in mind:
