Daikin BEV2 How to use

Installer reference guide
CO₂ Conveni-Pack: BEV2 unit
BEV2N112A7V1B

Table of contents
Installer reference guide
2
BEV2N-A
CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
Table of contents
1 About the documentation 3
1.1 About this document ...................................................................................................................................................... 3
2 General safety precautions 4
2.1 About the documentation .............................................................................................................................................. 4
2.1.1 Meaning of warnings and symbols ................................................................................................................ 4
2.2 For the installer............................................................................................................................................................... 5
2.2.1 General ........................................................................................................................................................... 5
2.2.2 Installation site ............................................................................................................................................... 6
2.2.3 Refrigerant — in case of R744........................................................................................................................ 6
2.2.4 Electrical ......................................................................................................................................................... 8
3 Specific installer safety instructions 10
4 About the box 13
4.1 To unpack and handle the unit....................................................................................................................................... 13
4.2 To remove the accessories ............................................................................................................................................. 13
5 About the unit 14
5.1 System layout.................................................................................................................................................................. 14
5.2 Compatibility................................................................................................................................................................... 15
6 Unit installation 16
6.1 Preparing the installation site......................................................................................................................................... 16
6.1.1 Installation site requirements of the unit ...................................................................................................... 16
6.1.2 Additional installation site requirements for CO₂ refrigerant ....................................................................... 18
6.2 Mounting the unit........................................................................................................................................................... 18
6.2.1 Guidelines when installing the unit................................................................................................................ 18
6.2.2 To mount the unit........................................................................................................................................... 19
7 Piping installation 21
7.1 Preparing refrigerant piping ........................................................................................................................................... 21
7.1.1 Refrigerant piping requirements.................................................................................................................... 21
7.1.2 Refrigerant piping insulation.......................................................................................................................... 22
7.2 Connecting the refrigerant piping .................................................................................................................................. 22
7.2.1 About connecting the refrigerant piping ....................................................................................................... 22
7.2.2 Precautions when connecting the refrigerant piping.................................................................................... 23
7.2.3 Guidelines when connecting the refrigerant piping...................................................................................... 24
7.2.4 To connect the refrigerant piping to the indoor unit .................................................................................... 24
8 Electrical installation 26
8.1 About connecting the electrical wiring .......................................................................................................................... 26
8.1.1 Precautions when connecting the electrical wiring....................................................................................... 26
8.1.2 Guidelines when connecting the electrical wiring......................................................................................... 27
8.2 To connect the electrical wiring to the BEV2 unit.......................................................................................................... 28
9 Commissioning 31
9.1 Checklist before commissioning..................................................................................................................................... 31
10 Disposal 32
11 Technical data 33
11.1 Wiring diagram................................................................................................................................................................ 33
11.1.1 Unified wiring diagram legend ....................................................................................................................... 33
12 Glossary 36

1 | About the documentation
Installer reference guide
3
BEV2N-A
CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
1 About the documentation
1.1 About this document
Target audience
Authorised installers
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.
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.
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 indoor unit)
▪Installation manual:
-Installation instructions
-Format: Paper (supplied in the kit)
▪Installer reference guide:
-Preparation of the installation, good practices, reference data,…
-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).

2 | General safety precautions
Installer reference guide
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BEV2N-A
CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
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.
NOTICE
Indicates a situation that could result in equipment or property damage.
INFORMATION
Indicates useful tips or additional information.
Symbols used on the unit:

2 | General safety precautions
Installer reference guide
5
BEV2N-A
CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
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".
2.2 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).
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.

2 | General safety precautions
Installer reference guide
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BEV2N-A
CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
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.
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,…
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.
2.2.2 Installation site
▪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.
▪In places where corrosive gas (example: sulphurous acid gas) is produced.
Corrosion of copper pipes or soldered parts may cause the refrigerant to leak.
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.

2 | General safety precautions
Installer reference guide
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BEV2N-A
CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
NOTICE
Make sure the field piping and connections are NOT subjected to stress.
WARNING
During tests, NEVER pressurise 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 4.2bar gauge pressure), you may continue charging with R744
in liquid state.
▪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.
▪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.

2 | General safety precautions
Installer reference guide
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BEV2N-A
CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
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.
2.2.4 Electrical
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 10minutes, and measure the voltage
at the terminals of main circuit capacitors or electrical components before
servicing. The voltage MUST be less than 50VDC 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
categoryIII 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.
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.

2 | General safety precautions
Installer reference guide
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BEV2N-A
CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
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.
Install power cables at least 1 meter away from televisions or radios to prevent
interference. Depending on the radio waves, a distance of 1meter may NOT be
sufficient.
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.

3 | Specific installer safety instructions
Installer reference guide
10
BEV2N-A
CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
3 Specific installer safety instructions
Always observe the following safety instructions and regulations.
Unit installation (see "6Unit installation"[ 4
16])
WARNING
Installation shall be done by an installer, the choice of materials and installation shall
comply with the applicable legislation. In Europe, EN378 is the applicable standard.
WARNING
▪Make sure to install all necessary countermeasures in case of refrigerant leakage
according to standard EN378 (see "6.1.2Additional installation site requirements
for CO₂ refrigerant"[418]).
▪Make sure to install a CO2 leak detector (field supply) in every room with
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.
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.
Refrigerant piping installation (see "7Piping installation"[ 4
21])
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.

3 | Specific installer safety instructions
Installer reference guide
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BEV2N-A
CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
CAUTION
NEVER bend high pressure piping! Bending can reduce the pipe thickness and thus
weaken the piping. ALWAYS use K65 fittings.
Electrical installation (see "8Electrical installation"[ 4
26])
WARNING
ALWAYS use multicore cable for power supply cables.
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
▪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 into
contact with sharp edges or piping, particularly on the high-pressure side.
▪Use the included cables (in the box of the indoor unit) and make sure that there is
no strain on the terminal connections or wires. Improper connections or
improper securing of wires can cause overheating, electrical shock or fire.
▪Do NOT use taped wires, stranded conductor wires, extension cords, or
connections from a star system. They can cause overheating, electrical shock or
fire.
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.
WARNING
Keep the interconnection wiring away from copper pipes without thermal insulation
as such pipes will be very hot.

3 | Specific installer safety instructions
Installer reference guide
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BEV2N-A
CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
Commissioning (see "9Commissioning"[ 4
31])
WARNING
Make sure that the service cover is closed after completing the installation of the
indoor unit, BEV2 unit, and outdoor unit.

4 | About the box
Installer reference guide
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BEV2N-A
CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
4 About the box
NOTICE
Before installation, check the packaging and parts for damage. Make sure that the
shipment is complete.
4.1 To unpack and handle the unit
Use a sling of soft material or protective plates together with a rope when lifting
the unit in order to avoid damage or scratches to the unit.
1Lift the unit by holding on to the hanger brackets without exerting any
pressure on other parts, especially on refrigerant piping, drain piping and
other resin parts.
1 2
4.2 To remove the accessories
4× 2×6×
1×
b c da
aBEV unit installation manual
bTie wrap (short)
cTie wrap (long)
dInsulation for fitting

5 | About the unit
Installer reference guide
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CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
5 About the unit
INFORMATION
The BEV2 unit is an extension for the indoor unit containing external expansion
valves. It is mandatory for some units using CO2 refrigerant; see the Daikin catalogue
for combinations.
5.1 System layout
INFORMATION
The following illustration is an example and might NOT match your system layout.
ab
f f
d
e
c
g
i
j
k
l
i
m
j
k
l
m
h
aMain outdoor unit (LRYEN10*)
bCapacity up unit (LRNUN5*)
cCommunication box (BRR9B1V1)
dBEV2 unit
eIndoor unit for air conditioning
fIndoor unit for refrigeration (showcase)
gIndoor unit for refrigeration (blower coil)
hSafety valve
iCO2 control panel
jCO2 detector
kCO2 alarm
lCO2 ventilator
mShut-off valve

5 | About the unit
Installer reference guide
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BEV2N-A
CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
INFORMATION
▪The maximum installation distance between the indoor unit and the BEV2 unit
depends on the length of the included transmission and power supply cables.
▪Make sure to install the units so the cables reach both units terminals.
▪The maximum installation height difference between the indoor unit and the
BEV2 unit is ≤0.5m.
5.2 Compatibility
Combine the EV unit BEV2N112A7V1B with the following indoor units:
▪FXFN50A2VEB
▪FXFN71A2VEB
▪FXFN112A2VEB
For a full list of compatible units, refer to the option list.

6 | Unit installation
Installer reference guide
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BEV2N-A
CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
6 Unit installation
WARNING
Installation shall be done by an installer, the choice of materials and installation shall
comply with the applicable legislation. In Europe, EN378 is the applicable standard.
WARNING
▪Make sure to install all necessary countermeasures in case of refrigerant leakage
according to standard EN378 (see "6.1.2Additional installation site requirements
for CO₂ refrigerant"[418]).
▪Make sure to install a CO2 leak detector (field supply) in every room with
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).
In this chapter
6.1 Preparing the installation site ................................................................................................................................................ 16
6.1.1 Installation site requirements of the unit.............................................................................................................. 16
6.1.2 Additional installation site requirements for CO₂ refrigerant............................................................................... 18
6.2 Mounting the unit................................................................................................................................................................... 18
6.2.1 Guidelines when installing the unit ....................................................................................................................... 18
6.2.2 To mount the unit .................................................................................................................................................. 19
6.1 Preparing the installation site
Choose an installation location with sufficient space for carrying the unit in and out
of the site.
Avoid installation in an environment with a lot of organic solvents such as ink and
siloxane.
Do NOT install the unit in places often used as work place. In case of construction
works (e.g. grinding works) where a lot of dust is created, the unit MUST be
covered.
6.1.1 Installation site requirements of the unit
INFORMATION
Also read the general installation site requirements. See the ""2 General safety
precautions"[44]" chapter.
INFORMATION
The sound pressure level is less than 70dBA.
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.

6 | Unit installation
Installer reference guide
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CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
NOTICE
This is a class A product. In a domestic environment this product may cause radio
interference in which case the user may be required to take adequate measures.
NOTICE
The equipment described in this manual may cause electronic noise generated from
radio-frequency energy. The equipment complies to specifications that are designed
to provide reasonable protection against such interference. However, there is no
guarantee that interference will NOT occur in a particular installation.
It is therefore recommended to install the equipment and electric wires in such a
way that they keep a proper distance from stereo equipment, personal computers,
etc.
In places with weak reception, keep distances of 1 m or more to avoid
electromagnetic interference of other equipment and use conduit tubes for power
and transmission lines.
Do NOT install the unit in the following places:
▪In places where a mineral oil mist, spray or vapour may be present in the
atmosphere. Plastic parts may deteriorate and fall off or cause water leakage.
▪Sound sensitive areas (e.g. near a bedroom), so that the operation noise will
cause no trouble.
It is NOT recommended to install the unit in the following places because it may
shorten the life of the unit:
▪Where the voltage fluctuates a lot
▪In vehicles or vessels
▪Where acidic or alkaline vapour is present
▪Ceiling insulation. When conditions in the ceiling exceed 30°C and a relative
humidity of 80%, or when fresh air is inducted into the ceiling, then additional
insulation is required (minimum 10mm thickness, polyethylene foam).
▪Ceiling strength. Check whether the ceiling is strong enough to support the
weight of the unit. If there is a risk, reinforce the ceiling before installing the unit.
-For existing ceilings, use anchors.
-For new ceilings, use sunken inserts, sunken anchors or other field supplied
parts.
▪Spacing. Mind the following requirements:
(mm)
≥250
≥250
≥50 ≥65
ab
aOutdoor unit side
bIndoor units side
▪Service space. Be sure to install the inspection door at the control box side.

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Installer reference guide
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4P677928-1 – 2021.10
450
300
450 (mm)
b
c
a
aControl box
bService space
cInspection door
INFORMATION
▪The maximum installation distance between the indoor unit and the BEV2 unit
depends on the length of the included transmission and power supply cables.
▪Make sure to install the units so the cables reach both units terminals.
▪The maximum installation height difference between the indoor unit and the
BEV2 unit is ≤0.5m.
6.1.2 Additional installation site requirements for CO₂ refrigerant
INFORMATION
For units using R744 refrigerant, additional installation site requirements apply. For
more information, see the reference guide or installation manual of the indoor unit.
6.2 Mounting the unit
6.2.1 Guidelines when installing the unit
▪Orientation of the unit. Install the unit according to labels on the sides of the
unit "TO ODU" (facing the outdoor unit) and "TO IDU" (facing the indoor unit).
TO ODU
TO IDU
TO ODU Install this side facing to outdoor unit
TO IDU Install this side facing to indoor unit
▪Suspension bolts and unit. Use M8~M10 suspension bolts for installation. Attach
the hanger bracket to the suspension bolt. Fix it securely using a nut and washer
on the top and bottom of the hanger bracket.
a: 428 a: 219

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Installer reference guide
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CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
aSuspension bolt pitch
▪Hanger bracket. Make sure to support the connection piping around the unit
using hanger brackets installed within 1 meter of the side of the unit. Avoid
putting excessive weight on the hanger bracket; otherwise the unit may fall and
cause injuries.
≤1 m ≤1 m
a
b
e
c
d
aUnit
bAnchor
cLong nut or turnbuckle
dSuspension bolt
eHanger bracket
6.2.2 To mount the unit
Changing the installation position of the control box
Prerequisite: The position of the control box can be changed if necessary.
180°
2
1
4, 7
3, 8
6
910
a b
c
d
b a
5
5
b e e eb ef f f f
aControl box lid
bControl box
cTop panel
dCoil cover
eWire clip
fTie wrap
1Remove the control box lid (2 screws).
2Remove the control box (2 screws).
3Remove the top panel (4 screws).
4Remove the coil cover (1 screw).
5Change the pull out direction of the wire (motorised valve coil) between the
unit body and the control box.

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CO₂ Conveni-Pack: BEV2 unit
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6Rotate the coil cover and top panel 180°.
7Reinstall the coil cover (1 screw).
8Reinstall the top panel (4 screws)
9Reinstall the control box in the new position (2 screws).
10 Reinstall the control box cover in the new position.
Mount the indoor unit on the suspension bolts
1Attach the hooks to the suspension bolts. Be sure to use:
▪3 nuts (M8/M10) in 4 locations
▪2 washers (for M8: outside diameter 24~28 mm, for M10: outside diameter
30~34mm) in 4locations.
(mm)
a1
ce
10~15
b
b
a2
d
a1 Nut (field supply)
a2 Double nut (field supply)
bWasher (field supply)
cHanger bracket
dSuspension bolt (field supply)
eUnit