Installer and user reference guide
CO₂ Conveni-Pack outdoor unit
LRYEN10A7Y1 LRNUN5A7Y1
Table of contents
Table of contents
1 About the documentation 5
1.1 About this document ...................................................................................................................................................... 5
2 General safety precautions 6
2.1 About the documentation .............................................................................................................................................. 6
2.1.1 Meaning of warnings and symbols ................................................................................................................ 6
2.2 For the installer............................................................................................................................................................... 7
2.2.1 General ........................................................................................................................................................... 7
2.2.2 Installation site ............................................................................................................................................... 8
2.2.3 Refrigerant — in case of R744........................................................................................................................ 10
2.2.4 Electrical ......................................................................................................................................................... 11
3 Specific installer safety instructions 13
For the user 17
4 User safety instructions 18
4.1 General............................................................................................................................................................................ 18
4.2 Instructions for safe operation....................................................................................................................................... 19
5 About the system 23
5.1 System layout.................................................................................................................................................................. 23
6 Before operation 25
7 Operation 27
7.1 Operation range.............................................................................................................................................................. 27
7.2 Design pressure............................................................................................................................................................... 27
8 Energy saving and optimum operation 28
9 Maintenance and service 29
9.1 Maintenance before a long stop period......................................................................................................................... 29
9.2 Maintenance after a long stop period............................................................................................................................ 30
9.3 About the refrigerant...................................................................................................................................................... 30
9.4 Recommended maintenance and inspection ................................................................................................................ 30
10 Troubleshooting 32
10.1 Error codes: Overview .................................................................................................................................................... 34
11 Relocation 35
12 Disposal 36
For the installer 37
13 About the box 38
13.1 Overview: About the box ................................................................................................................................................ 38
13.2 Outdoor unit ................................................................................................................................................................... 38
13.2.1 To unpack the outdoor unit ........................................................................................................................... 38
13.2.2 To handle the outdoor unit............................................................................................................................ 39
13.2.3 To remove the accessories from the outdoor unit........................................................................................ 40
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14 About the units and options 41
14.1 Identification ................................................................................................................................................................... 41
14.1.1 Identification label: Outdoor unit .................................................................................................................. 41
14.2 About the outdoor unit................................................................................................................................................... 42
14.2.1 Labels on outdoor unit ................................................................................................................................... 43
14.3 System layout .................................................................................................................................................................. 46
14.4 Combining units and options .......................................................................................................................................... 47
14.4.1 Possible combinations of indoor units........................................................................................................... 47
14.4.2 Possible options for the outdoor unit............................................................................................................ 48
14.5 Indoor unit constraints ................................................................................................................................................... 48
14.5.1 Constraints for air conditioning ..................................................................................................................... 48
14.5.2 Constraints for refrigeration .......................................................................................................................... 49
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
Table of contents
15 Unit installation 50
15.1 Preparing the installation site......................................................................................................................................... 50
15.1.1 Installation site requirements of the outdoor unit........................................................................................ 50
15.1.2 Additional installation site requirements of the outdoor unit in cold climates............................................ 53
15.1.3 Additional installation site requirements for CO₂ refrigerant....................................................................... 53
15.2 Opening and closing the unit.......................................................................................................................................... 58
15.2.1 About opening the units................................................................................................................................. 58
15.2.2 To open the outdoor unit............................................................................................................................... 58
15.2.3 To open the electrical component box of the outdoor unit ......................................................................... 59
15.2.4 To close the outdoor unit............................................................................................................................... 60
15.3 Mounting the outdoor unit............................................................................................................................................. 61
15.3.1 About mounting the outdoor unit ................................................................................................................. 61
15.3.2 Precautions when mounting the outdoor unit.............................................................................................. 61
15.3.3 To provide the installation structure ............................................................................................................. 61
15.3.4 To install the outdoor unit on the installation structure............................................................................... 63
15.3.5 To provide drainage........................................................................................................................................ 63
16 Piping installation 64
16.1 Preparing refrigerant piping ........................................................................................................................................... 64
16.1.1 Refrigerant piping requirements.................................................................................................................... 64
16.1.2 Refrigerant piping material ............................................................................................................................ 65
16.1.3 Refrigerant piping length and height difference ........................................................................................... 65
16.1.4 To select the piping size ................................................................................................................................. 67
16.1.5 To select refrigerant branch kits .................................................................................................................... 69
16.1.6 To select expansion valves for refrigeration.................................................................................................. 70
16.2 Using stop valves and service ports................................................................................................................................ 71
16.2.1 Overview stop valves for refrigeration and air-conditioner.......................................................................... 71
16.2.2 Overview stop valves for maintenance.......................................................................................................... 71
16.2.3 To handle the stop valve ................................................................................................................................ 72
16.2.4 To handle the service port ............................................................................................................................. 74
16.2.5 Tightening torques ......................................................................................................................................... 75
16.3 Connecting the refrigerant piping .................................................................................................................................. 75
16.3.1 About connecting the refrigerant piping ....................................................................................................... 75
16.3.2 Precautions when connecting the refrigerant piping.................................................................................... 76
16.3.3 To remove the spun pipes.............................................................................................................................. 77
16.3.4 To connect the refrigerant piping to the outdoor unit ................................................................................. 78
16.3.5 To braze the pipe end..................................................................................................................................... 80
16.3.6 Guidelines to connect T-joints ....................................................................................................................... 81
16.3.7 Guidelines to install a dryer............................................................................................................................ 82
16.3.8 Guidelines to install safety valves .................................................................................................................. 83
16.3.9 Guidelines to install blow off piping............................................................................................................... 83
16.4 Checking the refrigerant piping ...................................................................................................................................... 83
16.4.1 About checking the refrigerant piping........................................................................................................... 84
16.4.2 Checking refrigerant piping: General guidelines ........................................................................................... 84
16.4.3 Checking refrigerant piping: Setup ................................................................................................................ 85
16.4.4 To perform a leak test .................................................................................................................................... 85
16.4.5 To perform vacuum drying............................................................................................................................. 86
16.5 Insulating the refrigerant piping ..................................................................................................................................... 87
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
17 Electrical installation 88
17.1 About electrical compliance ........................................................................................................................................... 88
17.2 Field wiring: Overview .................................................................................................................................................... 89
17.3 Guidelines when knocking out knockout holes.............................................................................................................. 90
17.4 Guidelines when connecting the electrical wiring ......................................................................................................... 90
17.5 Specifications of standard wiring components .............................................................................................................. 92
17.6 Connections to the outdoor unit .................................................................................................................................... 93
17.6.1 Low voltage wiring – Outdoor unit ................................................................................................................ 93
17.6.2 High voltage wiring – Outdoor unit................................................................................................................ 95
17.7 Connections to the capacity up unit............................................................................................................................... 96
17.7.1 Low voltage wiring – Capacity up unit ........................................................................................................... 97
17.7.2 High voltage wiring – Capacity up unit .......................................................................................................... 99
18 Charging refrigerant 101
18.1 About charging refrigerant ............................................................................................................................................. 101
18.2 About the refrigerant...................................................................................................................................................... 101
18.3 Precautions when charging refrigerant.......................................................................................................................... 102
18.4 To determine additional refrigerant amount ................................................................................................................. 104
18.5 To charge refrigerant ...................................................................................................................................................... 106
19 Finishing the outdoor unit installation 107
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Table of contents
19.1 To check the insulation resistance of the compressor .................................................................................................. 107
20 Configuration 108
20.1 Overview: Configuration ................................................................................................................................................. 108
20.2 Making field settings ....................................................................................................................................................... 108
20.2.1 About making field settings............................................................................................................................ 108
20.2.2 To access the field setting components......................................................................................................... 108
20.2.3 Field setting components............................................................................................................................... 109
20.2.4 To access mode 1 or 2.................................................................................................................................... 110
21 Commissioning 112
21.1 Overview: Commissioning .............................................................................................................................................. 112
21.2 Precautions when commissioning .................................................................................................................................. 112
21.3 Checklist before commissioning ..................................................................................................................................... 113
21.4 About the test run........................................................................................................................................................... 114
21.5 To perform a test run (7-segment display) .................................................................................................................... 114
21.5.1 Test run checks............................................................................................................................................... 115
21.5.2 Correcting after abnormal completion of the test run.................................................................................. 118
21.6 Operating the unit........................................................................................................................................................... 118
21.7 Logbook ........................................................................................................................................................................... 118
22 Hand-over to the user 120
23 Maintenance and service 121
23.1 Overview: Maintenance and service .............................................................................................................................. 121
23.2 Maintenance safety precautions .................................................................................................................................... 121
23.2.1 To prevent electrical hazards......................................................................................................................... 121
23.3 To release refrigerant ..................................................................................................................................................... 122
24 Troubleshooting 123
24.1 Overview: Troubleshooting ............................................................................................................................................ 123
24.2 Precautions when troubleshooting ................................................................................................................................ 123
24.3 Solving problems based on error codes ......................................................................................................................... 123
24.3.1 Error codes: Overview.................................................................................................................................... 124
25 Disposal 128
26 Technical data 129
26.1 Service space: Outdoor unit ........................................................................................................................................... 129
26.2 Piping diagram: Outdoor unit ......................................................................................................................................... 132
26.3 Piping diagram: Capacity up unit .................................................................................................................................... 133
26.4 Wiring diagram: Outdoor unit ........................................................................................................................................ 134
27 Glossary 139
Installer and user reference guide
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LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
1 About the documentation
1.1 About this document
Target audience
Authorised installers + end users
INFORMATION
This appliance is intended to be used by expert or trained users in shops, in light
industry and on farms, or for commercial use by lay persons.
Documentation set
This document is part of a documentation set. The complete set consists of:
▪ General safety precautions:
- Safety instructions that you must read before installing
- Format: Paper (in the box of the outdoor unit)
1 | About the documentation
▪ Installation and operation manual of the outdoor unit:
- Installation and operation instructions
- Format: Paper (in the box of the outdoor unit)
▪ Installer and user reference guide of the outdoor unit:
- Preparation of the installation, reference data,…
- Detailed step-by-step instructions and background information for basic and
advanced usage
- Format: Digital files on http://www.daikineurope.com/support-and-manuals/
product-information/
Latest revisions of the supplied documentation may be available on the regional
Daikin website or via your dealer.
The original documentation is written in English. All other languages are
translations.
Technical engineering data
▪ A subset of the latest technical data is available on the regional Daikin website
(publicly accessible).
▪ The full set of latest technical data is available on the Daikin Business Portal
(authentication required).
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
Installer and user reference guide
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2 | General safety precautions
2 General safety precautions
2.1 About the documentation
▪ The original documentation is written in English. All other languages are
translations.
▪ The precautions described in this document cover very important topics, follow
them carefully.
▪ The installation of the system, and all activities described in the installation
manual and in the installer reference guide MUST be performed by an authorised
installer.
2.1.1 Meaning of warnings and symbols
DANGER
Indicates a situation that results in death or serious injury.
DANGER: RISK OF ELECTROCUTION
Indicates a situation that could result in electrocution.
DANGER: RISK OF BURNING/SCALDING
Indicates a situation that could result in burning/scalding because of extreme hot or
cold temperatures.
DANGER: RISK OF EXPLOSION
Indicates a situation that could result in explosion.
WARNING
Indicates a situation that could result in death or serious injury.
WARNING: FLAMMABLE MATERIAL
CAUTION
Indicates a situation that could result in minor or moderate injury.
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NOTICE
Indicates a situation that could result in equipment or property damage.
INFORMATION
Indicates useful tips or additional information.
Symbols used on the unit:
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
Symbol Explanation
Before installation, read the installation and operation
manual, and the wiring instruction sheet.
Before performing maintenance and service tasks, read the
service manual.
For more information, see the installer and user reference
guide.
The unit contains rotating parts. Be careful when servicing or
inspecting the unit.
Symbols used in the documentation:
Symbol Explanation
Indicates a figure title or a reference to it.
Example: " 1–3 Figure title" means "Figure 3 in chapter 1".
Indicates a table title or a reference to it.
Example: " 1–3 Table title" means "Table 3 in chapter 1".
2 | General safety precautions
2.2 For the installer
2.2.1 General
If you are NOT sure how to install or operate the unit, contact your dealer.
DANGER: RISK OF BURNING/SCALDING
▪ Do NOT touch the refrigerant piping, water piping or internal parts during and
immediately after operation. It could be too hot or too cold. Give it time to return
to normal temperature. If you must touch it, wear protective gloves.
▪ Do NOT touch any accidental leaking refrigerant.
WARNING
Improper installation or attachment of equipment or accessories could result in
electrical shock, short-circuit, leaks, fire or other damage to the equipment. Only use
accessories, optional equipment and spare parts made or approved by Daikin.
WARNING
Make sure installation, testing and applied materials comply with applicable
legislation (on top of the instructions described in the Daikin documentation).
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
CAUTION
Wear adequate personal protective equipment (protective gloves, safety glasses,…)
when installing, maintaining or servicing the system.
WARNING
Tear apart and throw away plastic packaging bags so that nobody, especially
children, can play with them. Possible risk: suffocation.
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2 | General safety precautions
In accordance with the applicable legislation, it might be necessary to provide a
logbook with the product containing at least: information on maintenance, repair
work, results of tests, stand-by periods,…
WARNING
Provide adequate measures to prevent that the unit can be used as a shelter by small
animals. Small animals that make contact with electrical parts can cause
malfunctions, smoke or fire.
CAUTION
Do NOT touch the air inlet or aluminium fins of the unit.
CAUTION
▪ Do NOT place any objects or equipment on top of the unit.
▪ Do NOT sit, climb or stand on the unit.
NOTICE
Works executed on the outdoor unit are best done under dry weather conditions to
avoid water ingress.
2.2.2 Installation site
Also, at least, following information MUST be provided at an accessible place at the
product:
▪ Instructions for shutting down the system in case of an emergency
▪ Name and address of fire department, police and hospital
▪ Name, address and day and night telephone numbers for obtaining service
In Europe, EN378 provides the necessary guidance for this logbook.
▪ Provide sufficient space around the unit for servicing and air circulation.
▪ Make sure the installation site withstands the weight and vibration of the unit.
▪ Make sure the area is well ventilated. Do NOT block any ventilation openings.
▪ Make sure the unit is level.
Do NOT install the unit in the following places:
▪ In potentially explosive atmospheres.
▪ In places where there is machinery that emits electromagnetic waves.
Electromagnetic waves may disturb the control system, and cause malfunction of
the equipment.
▪ In places where there is a risk of fire due to the leakage of flammable gases
(example: thinner or gasoline), carbon fibre, ignitable dust.
Instructions for equipment using R744 refrigerant
Installer and user reference guide
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▪ In places where corrosive gas (example: sulphurous acid gas) is produced.
Corrosion of copper pipes or soldered parts may cause the refrigerant to leak.
WARNING
▪ Do NOT pierce or burn refrigerant cycle parts.
▪ Be aware that the refrigerant inside the system is odourless.
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
2 | General safety precautions
WARNING
The appliance shall be stored so as to prevent mechanical damage and in a wellventilated room without continuously operating ignition sources (example: open
flames, an operating gas appliance or an operating electric heater) and have a room
size as specified below.
WARNING
Make sure installation, servicing, maintenance and repair comply with instructions
from Daikin and with applicable legislation (for example national gas regulation) and
are executed only by authorised persons.
WARNING
If one or more rooms are connected to the unit using a duct system, make sure:
▪ there are no operating ignition sources (example: open flames, an operating gas
appliance or an operating electric heater) in case the floor area is less than the
minimum floor area A (m²).
▪ no auxiliary devices, which may be a potential ignition source, are installed in the
duct work (example: hot surfaces with a temperature exceeding 700°C and
electric switching device);
▪ only auxiliary devices approved by the manufacturer are used in the duct work;
▪ air inlet AND outlet are connected directly to the same room by ducting. Do NOT
use spaces such as a false ceiling as a duct for the air inlet or outlet.
NOTICE
▪ Precautions shall be taken to avoid excessive vibration or pulsation to
refrigeration piping.
▪ Protection devices, piping and fittings shall be protected as far as possible against
adverse environmental effects.
▪ Provision shall be made for expansion and contraction of long runs of piping.
▪ Piping in refrigerating systems shall be designed and installed such as to minimise
the likelihood of hydraulic shock damaging the system.
▪ The indoor equipment and pipes shall be securely mounted and guarded such
that accidental rupture of equipment or pipes cannot occur from events such as
moving furniture or reconstruction activities.
CAUTION
Do NOT use potential sources of ignition in searching for or detection of refrigerant
leaks.
NOTICE
▪ Do NOT re-use joints and copper gaskets which have been used already.
▪ Joints made in installation between parts of refrigerant system shall be accessible
for maintenance purposes.
Installation space requirements
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
NOTICE
▪ Pipework shall be protected from physical damage.
▪ Installation of pipework shall be kept to a minimum.
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2 | General safety precautions
2.2.3 Refrigerant — in case of R744
See the installation manual or installer reference guide of your application for
more information.
NOTICE
Make sure refrigerant piping installation complies with applicable legislation. In
Europe, EN378 is the applicable standard.
NOTICE
Make sure the field piping and connections are NOT subjected to stress.
WARNING
During tests, NEVER pressurize the product with a pressure higher than the
maximum allowable pressure (as indicated on the nameplate of the unit).
WARNING
Take sufficient precautions in case of refrigerant leakage. If refrigerant gas leaks,
ventilate the area immediately. Possible risks:
▪ Carbon dioxide poisoning
▪ Asphyxiation
NOTICE
After all the piping has been connected, make sure there is no gas leak. Use nitrogen
to perform a gas leak detection.
NOTICE
▪ To avoid compressor breakdown, do NOT charge more than the specified amount
of refrigerant.
▪ When the refrigerant system is to be opened, refrigerant MUST be treated
according to the applicable legislation.
WARNING
Make sure there is no oxygen in the system. Refrigerant may only be charged after
performing the leak test and the vacuum drying.
Possible consequence: Self-combustion and explosion of the compressor because of
oxygen going into the operating compressor.
CAUTION
A vacuumed system will be under triple point. To avoid solid ice, ALWAYS start
charging with R744 in vapour state. When the triple point is reached (5.2 bar
absolute pressure or 4.2bar gauge pressure), you may continue charging with R744
in liquid state.
Installer and user reference guide
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▪ In case recharge is required, see the nameplate of the unit. It states the type of
refrigerant and necessary amount.
▪ The unit is factory charged with refrigerant and depending on pipe sizes and pipe
lengths some systems require additional charging of refrigerant.
▪ Only use R744 (CO2) as refrigerant. Other substances may cause explosions and
accidents.
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
2.2.4 Electrical
2 | General safety precautions
▪ Do NOT charge liquid refrigerant directly from a gas line. Liquid compression
could cause compressor operation failure.
▪ Only use tools exclusively for the refrigerant type used in the system, this to
ensure pressure resistance and prevent foreign materials from entering into the
system.
▪ Open refrigerant cylinders slowly.
CAUTION
When the refrigerant charging procedure is done or when pausing, close the valve of
the refrigerant tank immediately. If the valve is NOT closed immediately, remaining
pressure might charge additional refrigerant. Possible consequence: Incorrect
refrigerant amount.
DANGER: RISK OF ELECTROCUTION
▪ Turn OFF all power supply before removing the switch box cover, connecting
electrical wiring or touching electrical parts.
▪ Disconnect the power supply for more than 10minutes, and measure the voltage
at the terminals of main circuit capacitors or electrical components before
servicing. The voltage MUST be less than 50VDC before you can touch electrical
components. For the location of the terminals, see the wiring diagram.
▪ Do NOT touch electrical components with wet hands.
▪ Do NOT leave the unit unattended when the service cover is removed.
WARNING
If NOT factory installed, a main switch or other means for disconnection, having a
contact separation in all poles providing full disconnection under overvoltage
categoryIII condition, MUST be installed in the fixed wiring.
WARNING
▪ ONLY use copper wires.
▪ Make sure the field wiring complies with the applicable legislation.
▪ All field wiring MUST be performed in accordance with the wiring diagram
supplied with the product.
▪ NEVER squeeze bundled cables and make sure they do NOT come in contact with
the piping and sharp edges. Make sure no external pressure is applied to the
terminal connections.
▪ Make sure to install earth wiring. Do NOT earth the unit to a utility pipe, surge
absorber, or telephone earth. Incomplete earth may cause electrical shock.
▪ Make sure to use a dedicated power circuit. NEVER use a power supply shared by
another appliance.
▪ Make sure to install the required fuses or circuit breakers.
▪ Make sure to install an earth leakage protector. Failure to do so may cause
electrical shock or fire.
▪ When installing the earth leakage protector, make sure it is compatible with the
inverter (resistant to high frequency electric noise) to avoid unnecessary opening
of the earth leakage protector.
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
Installer and user reference guide
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2 | General safety precautions
CAUTION
▪ When connecting the power supply: connect the earth cable first, before making
the current-carrying connections.
▪ When disconnecting the power supply: disconnect the current-carrying cables
first, before separating the earth connection.
▪ The length of the conductors between the power supply stress relief and the
terminal block itself must be as such that the current-carrying wires are tautened
before the earth wire is in case the power supply is pulled loose from the stress
relief.
NOTICE
Precautions when laying power wiring:
▪ Do NOT connect wiring of different thicknesses to the power terminal block (slack
in the power wiring may cause abnormal heat).
▪ When connecting wiring which is the same thickness, do as shown in the figure
above.
▪ For wiring, use the designated power wire and connect firmly, then secure to
prevent outside pressure being exerted on the terminal board.
▪ Use an appropriate screwdriver for tightening the terminal screws. A screwdriver
with a small head will damage the head and make proper tightening impossible.
▪ Over-tightening the terminal screws may break them.
WARNING
▪ After finishing the electrical work, confirm that each electrical component and
terminal inside the electrical components box is connected securely.
▪ Make sure all covers are closed before starting up the unit.
NOTICE
Only applicable if the power supply is three‑phase, and the compressor has an ON/
OFF starting method.
If there exists the possibility of reversed phase after a momentary black out and the
power goes on and off while the product is operating, attach a reversed phase
protection circuit locally. Running the product in reversed phase can break the
compressor and other parts.
Installer and user reference guide
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LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
3 | Specific installer safety instructions
3 Specific installer safety instructions
Always observe the following safety instructions and regulations.
CAUTION
Do NOT insert fingers, rods or other objects into the air inlet or outlet. When the fan
is rotating at high speed, it will cause injury.
General installation requirements
WARNING
▪ Make sure to install all necessary countermeasures in case of refrigerant leakage
according to standard EN378 (see "15.1.3 Additional installation site
requirements for CO₂ refrigerant"[453]).
▪ Make sure to install a CO
refrigerant piping, air conditioning units, showcases or blower coils, and enable
the function for refrigerant leak detection (see the installation manual of the
indoor units).
WARNING
Make sure installation, servicing, maintenance, repair and applied materials follow
the instructions from Daikin and, in addition, comply with applicable legislation and
are performed by qualified persons only. In Europe and areas where IEC standards
apply, EN/IEC 60335-2-40 is the applicable standard.
leak detector (field supply) in every room with
2
Installation site (see
CAUTION
Appliance not accessible to the general public, install it in a secured area, protected
from easy access.
This unit, both indoor and outdoor, is suitable for installation in a commercial and
light industrial environment.
WARNING
All installed safety valves MUST ventilate to the outdoor space and NOT into a closed
area.
CAUTION
If the safety valve operates, CO2 gas may concentrate inside the casing of the
outdoor unit. Therefore, you should ALWAYS take a distance for your own safety. You
can close the outdoor unit if your portable CO2 detector confirmed that the
concentration of CO2 is at an acceptable level. For example, if 7kg CO2 is released
inside the casing, it takes around 5 minutes until the concentration of CO2 is low
enough.
WARNING
Do NOT place objects below the indoor and/or outdoor unit that may get wet.
Otherwise condensation on the main unit or refrigerant pipes, air filter dirt or drain
blockage may cause dripping, and objects under the unit may get dirty or damaged.
"15.1Preparing the installation site"[450]
)
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
WARNING
Install the unit only in locations where the doors of the occupied space are not tight
fitting.
Installer and user reference guide
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3 | Specific installer safety instructions
NOTICE
Serious injury and/or damage can result from blow off of the liquid receiver safety
valve (see "26.2Piping diagram: Outdoor unit"[4132]):
▪ NEVER service the unit when the pressure at the liquid receiver is higher than the
set pressure of the liquid receiver safety valve (86 barg±3%). If this safety valve
releases refrigerant, it can cause serious injury and/or damage.
▪ If the pressure > set pressure, ALWAYS discharge from pressure relief devices
before servicing.
▪ It is recommended to install and secure blow off piping to the safety valve.
▪ Remove the refrigerant before altering the safety valve position.
NOTICE
Adverse effects shall be considered. For example, danger of water collecting and
freezing in discharge pipes for pressure relief devices, accumulation of dirt and
debris, or blockage of the discharge pipes by solid CO2 (R744).
INFORMATION
Instructions on how to fix the unit in a correct way can be found in "15 Unit
installation"[450].
Refrigerant piping installation (see
NOTICE
During brazing or welding, refrigerant shall be removed from parts of the system
affected by the heat from brazing or welding. It is recommended that such
components are shipped without refrigerant charge.
WARNING
▪ ONLY use R744 (CO
accidents.
) as refrigerant. Other substances may cause explosions and
2
▪ 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 CO2 detector.
▪ 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.
"16Piping installation"[464]
)
Installer and user reference guide
14
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.
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
3 | Specific installer safety instructions
WARNING
▪ Use K65 piping for high-pressure applications with a working pressure of 120bar
or 90bar, depending on its location in the system.
▪ Use K65 unions and fittings approved for a working pressure of 120bar or 90bar,
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.
NOTICE
Piping outside a machinery room or enclosure shall be protected against possible
accidental damage.
NOTICE
Refrigerant piping shall be protected or enclosed to avoid damage.
NOTICE
Refrigerant piping passing through fire resistant walls and ceilings shall be sealed in
such a way as to be consistent with the fire rating of the partition.
NOTICE
Piping shall be suitably supported according to its size and service weight. For more
information, see European Standard EN378.
INFORMATION
To complete the refrigerating system, additional charging of refrigerant is required.
See "18Charging refrigerant"[4101].
Electrical installation (see
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.
"17Electrical installation"[488]
)
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
Installer and user reference guide
15
3 | Specific installer safety instructions
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 comply
with the applicable legislation.
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
Use an all-pole disconnection type breaker with at least 3mm 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
"26.4Wiring diagram: Outdoor unit"[4134].
INFORMATION
The method of connection of the appliance to the electrical supply and
interconnection of separate components is described in "17.2 Field wiring:
Overview"[489].
INFORMATION
Details of type and rating of fuses, or rating of circuit breakers are described in
"17Electrical installation"[488].
Installer and user reference guide
16
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
For the user
For the user
For the user
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
Installer and user reference guide
17
4 | User safety instructions
4 User safety instructions
Always observe the following safety instructions and regulations.
4.1 General
WARNING
If you are NOT sure how to operate the unit, contact your
installer.
WARNING
Children aged from 8 years and above and persons with
reduced physical, sensory or mental capabilities or lack of
experience and knowledge can only use this appliance if
they have been given supervision or instruction concerning
the use of the appliance by a person responsible for their
safety.
Children MUST NOT play with the appliance.
Cleaning and user maintenance MUST NOT be carried out
by children without supervision.
WARNING
To prevent electrical shocks or fire:
▪ Do NOT rinse the unit.
▪ Do NOT operate the unit with wet hands.
▪ Do NOT place any objects containing water on the unit.
CAUTION
▪ Do NOT place any objects or equipment on top of the
unit.
▪ Do NOT sit, climb or stand on the unit.
Installer and user reference guide
18
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
4 | User safety instructions
▪ Units are marked with the following symbol:
This means that electrical and electronic products may NOT be mixed with
unsorted household waste. Do NOT try to dismantle the system yourself: the
dismantling of the system, treatment of the refrigerant, of oil and of other parts
must be done by an authorized installer and must comply with applicable
legislation.
Units must be treated at a specialized treatment facility for reuse, recycling and
recovery. By ensuring this product is disposed of correctly, you will help to
prevent potential negative consequences for the environment and human
health. For more information, contact your installer or local authority.
▪ Batteries are marked with the following symbol:
This means that the batteries may NOT be mixed with unsorted household
waste. If a chemical symbol is printed beneath the symbol, this chemical symbol
means that the battery contains a heavy metal above a certain concentration.
Possible chemical symbols are: Pb: lead (>0.004%).
Waste batteries must be treated at a specialized treatment facility for reuse. By
ensuring waste batteries are disposed of correctly, you will help to prevent
potential negative consequences for the environment and human health.
4.2 Instructions for safe operation
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.
CAUTION
If this unit is installed indoors, it must ALWAYS be
equipped with an electrically powered safety measure
such as a CO2 refrigerant leak detector (field supply). In
order to be effective, the unit must ALWAYS be electrically
powered after installation.
If for any reason the CO2 refrigerant leak detector is
powered OFF, ALWAYS use a portable CO2 detector.
CAUTION
Do NOT insert fingers, rods or other objects into the air
inlet or outlet. When the fan is rotating at high speed, it
will cause injury.
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
Installer and user reference guide
19
4 | User safety instructions
CAUTION
▪ NEVER touch the internal parts of the controller.
▪ Do NOT remove the front panel. Some parts inside are
dangerous to touch and appliance problems may
happen. For checking and adjusting the internal parts,
contact your dealer.
WARNING
This unit contains electrical and hot parts.
WARNING
Before operating the unit, be sure the installation has been
carried out correctly by an installer.
CAUTION
It is unhealthy to expose your body to the air flow for a
long time.
CAUTION
To avoid oxygen deficiency, ventilate the room sufficiently
if equipment with burner is used together with the system.
CAUTION
Do NOT operate the system when using a room
fumigation-type insecticide. Chemicals could collect in the
unit, and endanger the health of people who are
hypersensitive to chemicals.
CAUTION
NEVER expose little children, plants or animals directly to
the airflow.
WARNING
Installer and user reference guide
20
Do NOT place objects below the indoor and/or outdoor
unit that may get wet. Otherwise condensation on the
main unit or refrigerant pipes, air filter dirt or drain
blockage may cause dripping, and objects under the unit
may get dirty or damaged.
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
4 | User safety instructions
WARNING
Do NOT place a flammable spray bottle near the air
conditioner and do NOT use sprays near the unit. Doing so
may result in a fire.
Maintenance and service (see
WARNING: System contains refrigerant under
very high pressure.
The system MUST be serviced by qualified persons only.
CAUTION: Pay attention to the fan!
It is dangerous to inspect the unit while the fan is running.
Be sure to turn off the main switch before executing any
maintenance task.
WARNING
NEVER replace a fuse with a fuse of a wrong ampere
ratings or other wires when a fuse blows out. Use of wire
or copper wire may cause the unit to break down or cause
a fire.
CAUTION
"9Maintenance and service"[429]
)
After a long use, check the unit stand and fitting for
damage. If damaged, the unit may fall and result in injury.
CAUTION
Before accessing terminal devices, make sure to interrupt
all power supply.
DANGER: RISK OF ELECTROCUTION
To clean the air conditioner or air filter, be sure to stop
operation and turn all power supplies off. Otherwise, an
electric shock and injury may result.
WARNING
Be careful with ladders when working in high places.
WARNING
Do NOT let the indoor unit get wet. Possible consequence:
Electric shock or fire.
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
Installer and user reference guide
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4 | User safety instructions
About the refrigerant (see
WARNING
▪ Do NOT pierce or burn refrigerant cycle parts.
▪ Be aware that the refrigerant inside the system is
odourless.
WARNING
The R744 refrigerant (CO2) inside the unit is odourless,
non-flammable and normally does NOT leak.
If the unit is installed indoors, ALWAYS install a CO
detector according to the specifications of standard
EN378.
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.
"9.3About the refrigerant"[430]
)
2
Do NOT use the unit until a service person confirms that
the part from which the refrigerant leaked has been
repaired.
Troubleshooting (see
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.
"10Troubleshooting"[432]
)
Installer and user reference guide
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LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
5 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.
5 | About the system
5.1 System layout
INFORMATION
The following illustration is an example and might NOT match your system layout.
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
Installer and user reference guide
23
5 | About the system
ab
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 Indoor unit for air conditioning
e Indoor unit for refrigeration (showcase)
f Indoor unit for refrigeration (blower coil)
g Safety valve
h CO2 control panel
i CO2 detector
j CO2 alarm
k CO2 ventilator
l Shut off valve
Installer and user reference guide
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LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
6 Before operation
WARNING
This unit contains electrical and hot parts.
WARNING
Before operating the unit, be sure the installation has been carried out correctly by
an installer.
NOTICE
NEVER inspect or service the unit by yourself. Ask a qualified service person to
perform this work.
WARNING
NEVER use a flammable spray such as hair spray, lacquer or paint near the unit. It
may cause a fire.
6 | Before operation
WARNING
Do NOT keep flammable materials inside the unit. They may cause an explosion or a
fire.
CAUTION
It is unhealthy to expose your body to the air flow for a long time.
CAUTION
To avoid oxygen deficiency, ventilate the room sufficiently if equipment with burner
is used together with the system.
CAUTION
Do NOT operate the system when using a room fumigation-type insecticide.
Chemicals could collect in the unit, and endanger the health of people who are
hypersensitive to chemicals.
NOTICE
Be sure to turn ON the power 6 hours before operation in order to have power
running to the crankcase heater and to protect the compressor.
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
Operation modes:
▪ Refrigeration only
▪ Cooling only
▪ Cooling and refrigeration
▪ Heating and refrigeration:
- With fully heat recovery
- With outdoor heat exchanger as gas cooler
- With outdoor heat exchanger as evaporator
▪ Heating only
Installer and user reference guide
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6 | Before operation
Dedicated functions exist depending on the type of indoor unit, refer to dedicated
installation/operation manual for more information.
Installer and user reference guide
26
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
7 Operation
7.1 Operation range
Use the system in the following temperature ranges for safe and effective
operation.
Outdoor
temperature
7 | Operation
Refrigeration A/C cooling A/C heating
–20~43°CDB
(a)
–5~43°CDB –20~16°CWB
Indoor
temperature
(a)
7.2 Design pressure
Always keep the following design pressures in mind:
Side Design pressure
Refrigeration 90bar
Air conditioning 120bar
— 14~24°CWB 15~27°CDB
For low load restrictions, see "14.5.2Constraints for refrigeration"[449].
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
Installer and user reference guide
27
8 | Energy saving and optimum operation
8 Energy saving and optimum operation
Observe the following precautions to ensure the system operates properly.
▪ Adjust the air outlet properly and avoid direct air flow to room inhabitants.
▪ Adjust the room temperature properly for a comfortable environment. Avoid
excessive heating or cooling.
▪ Adjust the room temperature properly for a comfortable environment. Avoid
excessive heating or cooling. Notice that it may take some time for the room
temperature to reach the set temperature. Consider using the timer setting
options.
▪ Adjust the evaporating temperature for refrigeration properly in the settings of
the outdoor unit.
▪ Prevent direct sunlight from entering a room during cooling operation by using
curtains or blinds.
▪ Ventilate often. Extended use requires special attention to ventilation.
▪ Keep doors and windows closed. If the doors and windows remain open, air will
flow out of your room causing a decrease in the cooling or heating effect.
▪ Be careful NOT to cool or heat too much. To save energy, keep the temperature
setting at a moderate level.
▪ NEVER place objects near the air inlet or the air outlet of the unit. Doing so may
cause a reduced heating/cooling effect or stop operation.
▪ Turn off the main power supply switch to the unit when the unit is not used for
longer periods of time. If the switch is on, it consumes electricity. Before
restarting the unit, turn on the main power supply switch 6 hours before
operation to ensure smooth running. (Refer to "Maintenance" in the indoor unit
manual.)
▪ When the display shows (time to clean the air filter), ask a qualified service
person to clean the filters. (Refer to "Maintenance" in the indoor unit manual.)
Installer and user reference guide
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LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
9 Maintenance and service
NOTICE
NEVER inspect or service the unit by yourself. Ask a qualified service person to
perform this work.
WARNING
NEVER replace a fuse with a fuse of a wrong ampere ratings or other wires when a
fuse blows out. Use of wire or copper wire may cause the unit to break down or
cause a fire.
CAUTION
Do NOT insert fingers, rods or other objects into the air inlet or outlet. Do NOT
remove the fan guard. When the fan is rotating at high speed, it will cause injury.
CAUTION: Pay attention to the fan!
It is dangerous to inspect the unit while the fan is running.
Be sure to turn off the main switch before executing any maintenance task.
9 | Maintenance and service
CAUTION
After a long use, check the unit stand and fitting for damage. If damaged, the unit
may fall and result in injury.
NOTICE
Do NOT wipe the controller operation panel with benzine, thinner, chemical dust
cloth, etc. The panel may get discoloured or the coating peeled off. If it is heavily
dirty, soak a cloth in water-diluted neutral detergent, squeeze it well and wipe the
panel clean. Wipe it with another dry cloth.
9.1 Maintenance before a long stop period
E.g., at the end of the season.
▪ Let the indoor units run in fan only operation for about half a day in order to dry
the interior of the units. See the operation manual of the indoor unit.
▪ Turn off the power. The user interface display disappears.
WARNING
When turning the power OFF for a long stop period, ALWAYS remove the refrigerant
from the units. If you cannot remove the refrigerant for any reason, ALWAYS keep
the power turned ON.
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
▪ Clean air filters and casings of indoor units. Contact your installer or maintenance
person to clean air filters and casings of the indoor unit. Maintenance tips and
procedures for cleaning are provided in the installation/operation manuals of
dedicated indoor units. Make sure to install cleaned air filters back in the same
position.
Installer and user reference guide
29
9 | Maintenance and service
9.2 Maintenance after a long stop period
E.g., at the beginning of the season.
▪ Check and remove everything that might be blocking inlet and outlet vents of
indoor units and outdoor units.
▪ Clean air filters and casings of indoor units. Contact your installer or maintenance
person to clean air filters and casings of the indoor unit. Maintenance tips and
procedures for cleaning are provided in the installation/operation manuals of
dedicated indoor units. Make sure to install cleaned air filters back in the same
position.
▪ Clean showcase and unit cooler. Maintenance tips and procedures for cleaning
are provided in the installation/operation manuals of dedicated indoor units.
▪ Turn on the power at least 6 hours before operating the unit in order to ensure
smoother operation. As soon as the power is turned on, the user interface
display appears.
9.3 About the refrigerant
This product contains refrigerant gases.
Refrigerant type: R744 (CO2)
WARNING
▪ Do NOT pierce or burn refrigerant cycle parts.
▪ Be aware that the refrigerant inside the system is odourless.
WARNING
The R744 refrigerant (CO2) inside the unit is odourless, non-flammable and normally
does NOT leak.
If the unit is installed indoors, ALWAYS install a CO2 detector according to the
specifications of standard EN378.
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.
9.4 Recommended maintenance and inspection
Installer and user reference guide
30
Since dust collects when using the unit for several years, performance of the unit
will deteriorate to some extent. As taking apart and cleaning interiors of units
requires technical expertise and in order to ensure the best possible maintenance
of your units, we recommend to enter into a maintenance and inspection contract
on top of normal maintenance activities. Our network of dealers has access to a
permanent stock of essential components in order to keep your unit in operation
as long as possible. Contact your dealer for more information.
When asking your dealer for an intervention, always state:
▪ The complete model name of the unit.
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
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