Immergas AUDAX PRO 4 V2 Product manual

AUDAX PRO
4 - 6 - 9 V2
Outdoor
Condensing
Unit
IE
Instructions and warnings
Installer and
Maintenance technician
*1.044631ENG*
*1.044631ENG*

2
INDEX
Dear Customer,................................................................................. 3
General warnings ............................................................................. 4
Safety symbols used.......................................................................... 6
Personal protective equipment....................................................... 6
1 Product specications. ....................................................... 7
1.1 Product range....................................................................... 7
1.2 Accessories............................................................................ 7
2 Outdoor unit specications. .............................................. 8
3 Main components. .............................................................. 9
4 Installation of the unit....................................................... 10
4.1 Outdoor unit installation position. ................................. 10
4.2 Installation guide near the sea. ........................................ 10
4.3 Preparation of re extinguisher. ...................................... 12
4.4 Free ignition sources. ........................................................ 12
4.5 Ventilation of the area....................................................... 12
4.6 Leak detection methods.................................................... 12
4.7 Labelling.............................................................................. 12
4.8 Recovery.............................................................................. 13
4.9 Installation place requirements........................................ 13
4.10 Moving the outdoor unit with wire ropes. ..................... 13
4.11 Clearance requirements for the outdoor unit................ 14
4.12 Installing the outdoor unit. .............................................. 16
4.13 Mount of outdoor unit...................................................... 16
4.14 Drain.................................................................................... 17
4.15 Positioning the unit in a rigid climate.............................19
5 Electrical connections....................................................... 20
5.1 General conguration of the system............................... 20
6 Connection of the cable.................................................... 21
6.1 Power cable specications. ............................................... 21
6.2 Specications of connecting cables. ............................... 21
6.3 Specications of single phase terminal block. ............... 21
6.4 Power cable connection diagram..................................... 22
6.5 Connection of power terminal......................................... 24
6.6 Installation of earthing wire............................................. 24
6.7 How to connect extension cables..................................... 25
7 Checking correct earthing................................................ 27
8 Installation of chiller lines. ............................................... 28
8.1 Allowed length of the refrigerant pipe and
installation examples......................................................... 28
8.2 Selection of refrigerant pipe. ............................................ 29
8.3 Keep the refrigerant pipe clean and dry.......................... 29
8.4 Cutting and anging of pipes........................................... 30
8.5 Choose the insulation of the refrigerant pipe. ............... 32
8.6 Insulating the refrigerant pipe. ........................................ 32
8.7 Braze welding the pipe...................................................... 32
8.8 Testing for refrigerant gas leaks. ...................................... 33
8.9 Creating vacuum................................................................ 34
8.10 Select the additional refrigerant charge.......................... 35
8.11 Recharging the refrigerant................................................ 35
8.12 Adding refrigerant............................................................. 37
8.13 Closing the valve stem....................................................... 38
8.14 Opening the valve stem.....................................................38
9 Cooling cycle diagrams..................................................... 39
9.1 Audax Pro 4-6 V2 diagram............................................... 39
9.2 Audax Pro 9 V2 diagram. ................................................. 39
10 Wiring diagrams................................................................ 40
10.1 Audax Pro 4-6 V2 wiring diagram. ................................. 40
10.2 Audax Pro 9 V2 wiring diagram...................................... 41
11 Microswitch and key function settings. ......................... 42
11.1 Audax Pro 4-6 V2 testing operations.............................. 42
11.2 Audax Pro 9 V2 testing operations.................................. 44
12 “Pump down” execution. .................................................. 47
12.1 Purpose of “Pump down”.................................................. 47
12.2 Important warnings for “Pump down” execution......... 47
12.3 Collect the refrigerant in a specic vessel before
“Pump down”...................................................................... 48
13 Completion of installation................................................ 49
14 Final inspections and test operation. .............................. 50
14.1 Inspection prior to test operation.................................... 50
14.2 Test operation..................................................................... 50

3
e manufacturer declines all liability due to printing or transcription errors, reserving the right to make any modications to its
technical and commercial documents without forewarning.
e company IMMERGAS S.p.A., with registered oce in via Cisa Ligure 95 42041 Brescello (RE), declares that the design, manu-
facturing and aer-sales assistance processes comply with the requirements of standard UNI EN ISO 9001:2015.
For further details on the product CE marking, request a copy of the Declaration of Conformity from the manufacturer, specifying the
appliance model and the language of the country.
Dear Customer,
Congratulations for having chosen a top-quality Immergas product, able to assure well-being and safety for a long period of time. As an
Immergas Customer, you can also count on a qualied aer-sales service, prepared and updated to guarantee constant eciency of your
heat pump. Read the following pages carefully: you will be able to draw useful tips on the proper use of the device, compliance with which
will conrm your satisfaction with the Immergas product.
For assistance and routine maintenance, contact Authorised Service Centres: they have original spare parts and are specically trained
directly by the manufacturer.
Correct disposal of the product
(Waste electrical and electronic equipment)(Applicable in Countries with separate waste collection systems)
When this symbol is applied on the product, on the accessories or on its documentation, it means that the product and relative
electronic accessories must not be disposed of with other waste at the end of its life cycle. To avoid damaging the environment or
health due to incorrect waste disposal, the user is recommended to separate the product and the above-mentioned accessories from
other types of waste and to recycle them responsibly by sending them to authorised facilities in compliance with local standards.
Household users are encouraged to contact the dealer where they purchased the product or the competent authorities to receive
all of the information regarding the separate waste collection of these products so that they may be disposed of properly without
harming the environment.
Corporate users should contact their supplier and verify the terms and conditions of the purchase contract. is product and
relative electronic accessories must not be disposed of together with other commercial waste.

4
GENERAL WARNINGS
• Carefully follow the precautions listed below as they are crucial to guarantee the safety of the product.
ATTENTION:
- always disconnect power to the condensing unit before performing maintenance on it or
accessing the components inside the unit.
- Make sure that installation and inspection operations are carried out by qualied personnel.
- ey must comply with the precautions and other important warnings to avoid seriously dam-
aging the system and injuring the users.
•Carefully read the content of this manual before installing the condensing unit and keep it in a safe place so that it can be referred
to aer installation.
•For greater safety, the installers should always read the following warnings with the utmost attention.
•Store the use and maintenance manual in a safe place and remember to hand it over to the new owner should the condensing unit
be sold or transferred.
•is manual explains how to install the condensing unit. Using other types of units with dierent control systems can damage the
units and invalidate the warranty. e manufacturer will not be held liable for damage resulting from improper use of the unit.
•e manufacturer cannot be held liable for damage resulting from unauthorised changes or improper connection of the electric and
hydraulic lines. Failure to comply with these instructions or with the requirements set forth in the “Operating limits” table, including
those in the manual, immediately invalidates the warranty.
•Failure to comply with the instructions indicated in the production specications immediately invalidates the warranty.
•Do not use the units if you notice any damage on them or if you perceive something strange, such as a loud noise or burnt smell.
•To prevent electrocution, re or injury, always switch o the unit, disable the protective switch and, if smoke escapes or if the unit is
extremely noisy, contact the Authorised Technical Service Centre.
•Remember to inspect the unit at regular intervals, including the electrical connections, the refrigerant pipes and the protections.
•ese operations must only be done by qualied personnel.
•e unit contains moving and electric parts which must always be kept out of the reach of children.
•Do not have unauthorised personnel attempt to repair, move, modify or reinstall the unit. ese operations could cause damage to
the product, electric shocks and re.
•Do not place liquid containers or other objects on the unit.
•All the materials used to manufacture and package the condensing unit are recyclable.
•e packaging material and the dead batteries of the remote control (optional) must be disposed of in compliance with local standards.
•e refrigerant in the condensing unit must be disposed of as special waste. At the end of its life, the condensing unit must be disposed
of in an Authorised Assistance Centre or returned to the shop so that it can be disposed of correctly and safely.
•Wear protective gloves to unpack, move, install and repair the unit so that its edges do not injure your hands.
•Do not touch the internal parts (water pipes, refrigerant pipes, heat exchanger, etc.) while the unit is operating. If it needs to be
adjusted, leave it as long as necessary to cool o and make sure to put on protective gloves.
•In case of refrigerant leaks, try not to come into contact with the refrigerant as this could cause serious injury.
•If the condensing unit is installed in a small room, consider adequate ventilation to avoid a leak level beyond the maximum allowed
limit. In that case, there is the risk of death by suocation.

5
•Make sure to dispose of the packaging materials safely. e packaging items, such as nails and other metals or wooden pallets can
cause injuries to children.
•Inspect the shipped product and make sure it was not damaged during transport. If you notice any damage, DO NOT INSTALL
THE PRODUCT and immediately report any damage to the carrier or dealer (if the installer or authorised technician withdrew the
material from the dealer).
•Our units must be installed according to the clearance spaces described in the installation manual so that both sides are accessible
and to allow for repairs and maintenance to be performed. If the units are installed without complying with the procedures described
in the manual, additional costs could be required since special wiring, ladders, scaolds or any other elevation system for repairs are
NOT considered covered by the warranty and are therefore charged to the end customer.
•Always make sure that the power supply complies with local safety standards.
•Check that the supply voltage and frequency comply with the specications and that there is sucient input power to guarantee
operation of any other household appliance connected to the same power lines. Always make sure that the on-o switches and circuit
breakers are selected appropriately.
•Always check that the electrical connections (cable inlet, wire cross-section, protections, etc.) comply with the electrical specications
and with the instructions in the wiring diagram. Always check that all of the connections comply with the regulations applicable to
installation of the heat pumps. e devices not connected to the power supply must be completely disconnected according to the
conditions envisaged by the overvoltage categories.
•Do not connect the earth wire to the gas piping, to the water piping, to the lightning rod, to the overvoltage absorber or to the tele-
phone cable. An electric shock or a re could occur if earthing is not complete.
•Make sure to install both the earth leakage detector and the circuit switch of the capacity specied in compliance with local and
national standards in force. If they are not installed properly, they can cause electric shocks and res.
•Make sure that condensate exits properly from the unit at low room temperature. Do not allow frost or ice to form on the drain pipe
or on the heater. If the drain is not done properly for release of condensate, the units could be damaged by ice blocks and the system
could be stopped, covered with ice.
•Install the power cable and the communication cable between the indoor and outdoor unit at least 1 m from the household appliance.
•Protect the appliance against mice or small animals. If an animal creates a contact with electric parts, it could cause malfunctioning,
smoke or res. Inform the customer to keep the area around the unit clean.
•Do not disassemble or modify the heater on your own initiative.
•is appliance is not intended to be used by persons (including children) with reduced physical, sensory or mental capabilities or
lacking experience and the necessary knowledge, unless they are supervised or trained on use of the appliance by someone in charge
of their safety. Children must be supervised to make sure they do not play with the appliance.
•For use in Europe: this appliance may be used by children at least 8 years old or by persons with reduced physical, sensory or mental
capabilities or lacking experience and basic notions, as long as they are supervised or properly trained on safe use of the appliance and
are aware of the risks posed by it. Do not allow children to play with the appliance. e appliance must not be cleaned and serviced
by children without the supervision of an adult.
•Make sure not to modify the power cable, to make extensions or connections with several wires.
•is could cause electrocutions or re due to connections or insulation made improperly or exceeding the current limit. If extensions
need to be made due to damage along the power line, see chapter “How to connect extension cables” in the installation manual.
•Do not use means to speed up the defrosting operation or to clean other than those recommended by Immergas.
•Do not puncture or burn.
•Be aware that refrigerants are odourless.

6
SAFETY SYMBOLS USED.
GENERIC HAZARD
Strictly follow all of the indications next to the pictogram. Failure to follow the indications can generate hazard situa-
tions resulting in possible harm to the health of the operator and user in general.
ELECTRICAL HAZARD
Strictly follow all of the indications next to the pictogram. e symbol indicates the appliance’s electrical components
or, in this manual, identies actions that can cause an electrical hazard.
LOW FLAMMABILITY MATERIAL
e symbol indicates that the appliance contains low ammability material.
WARNING FOR INSTALLER
Read the instruction booklet carefully before installing the product.
NOTE FOR INSTALLER
Indicates useful tips or additional information for the installer.
WARNING FOR USER
Read the instruction booklet carefully before using the product.
READ AND UNDERSTAND THE INSTRUCTIONS
Read and understand the appliance’s instructions before performing any operation, carefully following the indications
provided.
INFORMATION
Indicates useful tips or additional information in general.
SAFETY GLOVES
PERSONAL PROTECTIVE EQUIPMENT.
SAFETY GOGGLES
SAFETY FOOTWEAR
e user must not dispose of the appliance at the end of its service life as municipal waste, but send it to appro-
priate collection centres.

1 2
AUDAX PRO 4 V2 - AUDAX PRO 6 V2 AUDAX PRO 9 V2
7
1PRODUCT SPECIFICATIONS.
1.1 PRODUCT RANGE.
1.2 ACCESSORIES.
Keep the supplied accessories at hand until installation is nished.
Give the installation manual to the customer at the end of installation. e amounts are indicated in brackets.
e outdoor condensing unit of the basic heat pump for interiors works according to the outside climate.
Installation manual (1) Drain plug (2) Rubber feet (4) Drain plug (3)

8
Type Unit Audax Pro 4 V2 Audax Pro 6 V2 Audax Pro 9 V2
Power supply - 1P, 220~240 VAC, 50 Hz
Compressor - Twin Rotary
Oil compressor - POE
Fan - Unit number 1
Fan - Air ow CMM 40 43 66
Refrigerant load Kg 1.2 1.4
Type of refrigerant R32
Refrigerant control method EEV
Chiller line section - liquid phase ø1/4”
Chiller line section - gaseous phase ø5/8”
Sound pressure level (central heating /cooling) dB(A) 44 /46 47 /47 49 /49
Sound power level (central heating /cooling) dB(A) 58 /61 60 /62 64 /63
Operating eld (central heating /cooling) °C -25~35/10~46
Weight (net /gross) kg 46.5 /49.5 73.0 /81.5
Dimensions (L x H x D, overall clearance) mm 880 x 638 x 310 940 x 998 x 330
2OUTDOOR UNIT SPECIFICATIONS.

4
3
26
15
139
211
638
358
361
880 310
229
934
231
LP
GP
342
375
25
360
998
620
973
940
19
330
40
384
LP
GP
9
General dimensions in mm Audax Pro 4-6 V2
General dimensions in mm Audax Pro 9 V2
3MAIN COMPONENTS.

5
10
Sea breeze
Outdoor
unit
Sea Sea
Outdoor
unit
Sea breeze
Sea
Protective
wall
Sea breeze
Outdoor
unit
4INSTALLATION OF THE UNIT.
4.1 OUTDOOR UNIT INSTALLATION POSITION.
Determine the installation site considering the following condi-
tions and get the user’s approval.
- e outdoor unit must not be positioned on its side or upside
down, as the lubricating oil of the compressor could enter the
cooling circuit and seriously damage the unit.
- Choose a dry and sunny position, though not exposed to direct
sunlight or to strong wind.
- Do not block passages or exit routes.
- Choose a position where the noise of the condensing unit during
operation or the discharge air do not disturb neighbours.
- Choose a position where the pipes and cables can be easily con-
nected to another hydraulic system.
- Install the outdoor unit on a at and stable surface capable of
bearing its weight and which does not generate any useless noise
and vibrations.
- Position the outdoor unit so that the air ow is directed outdoors.
- Position the outdoor unit where there are no trees or animals
which could impair its operation.
- Leave sucient space around the outdoor unit, especially for
radios, computers, stereo systems, etc.
4.2 INSTALLATION GUIDE NEAR THE SEA.
Make sure to follow these guidelines for installation along the
sea coast.
1. Do not install the appliance where it is directly exposed to sea
water or breeze.
- Install the product behind a structure (like a building) which
can block the sea breeze.
- Even when it is inevitable to install the appliance along the
seacoast, make sure it is not exposed directly to the sea breeze
by installing a protective wall.
2. Consider that the saline particles which adhere to the external
panels must be suciently washed.
3. Since residual water at the bottom of the outdoor unit signif-
icantly promotes corrosion, make sure the slope does not aect
drainage.
- Keep the oor level so that rain does not make any puddles.
- Be careful not to obstruct the drain hole with foreign substances
4. When the appliance is installed on the beach, clean it regularly
with water to remove any attached salinity.
5. Make sure to install the appliance where water can be drained
conveniently. In particular, make sure that the part of the base
drains well.
6. If the appliance is drained during installation or maintenance,
make sure to restore it.
7. Regularly check the condition of the product.
- Check the installation site every 3 months and perform an
anti-corrosion treatment with grease and water-repellent wax
according to the conditions of the appliance.
- Take appropriate measures to cover the product when it needs
to be stopped for a long period of time, for example peak hours.
8. e product requires a special anti-corrosion treatment if
installed within 500 m from the sea.
For further information, contact the Authorised Technical As-
sistance Centre.
e protective wall must be built with solid and stur-
dy material capable of blocking the sea breeze and
its height and width must be 1.5 times larger than
those of the outdoor unit. (To guarantee ventilation,
the protective wall must be at least 700 mm from the
outdoor unit).

11
ATTENTION:
depending on the power supply condi-
tions, power instability or voltage can
cause malfunctioning of the parts or
of the control system. (On ships or in
places powered by an electric generator, etc.).
Do not install the condensing unit in the following places.
- Places where there is mineral oil or arsenic acid. Parts could
be damaged by burnt resin. e capacity of the heat exchanger
could be reduced or the condensing unit could fail.
- Places where exhaust fans eject corrosive gases such as sulphuric
acid. Copper pipes or connection pipes would be corroded with
subsequent refrigerant leaks.
- Places with the risk of leaks of combustible gases, carbon bres
or ammable dust. Places where thinners or petrol are handled.
ATTENTION:
this device must be installed according
to current electrical standards.
If the outdoor unit has a net weight over
60 kg, we suggest not to install it on the
wall but on the oor.
- If the outdoor unit is installed at a certain height, make sure that
its base is rmly fastened in place.
- Make sure that the condensate water collected by the drain hose
is disposed of properly and safely.
- When the outdoor unit is installed on the road, it must be in-
stalled 2 m higher or in such a way that the heat emitted by the
outdoor unit does not come into direct contact with passers-by.
(Refer to standards in force relating to structures in the con-
struction eld).
- During installation or transfer of the product, do not mix the
refrigerant with other gases, including air or unspecied refrig-
erant. Otherwise it could cause an increase in pressure, causing
ruptures or injury.
- Do not cut or burn the container or the refrigerant pipes.
- Use clean parts, such as pressure gauge, vacuum pump and
exible hose to charge the refrigerant.
- Installation must be carried out by personnel qualied to handle
the refrigerant. Also consult the regulations and laws.
- Do not allow foreign substances (lubricating oil, refrigerant other
than R-32, water, etc.) to penetrate into the pipes.
- When mechanical ventilation is required, the vents must be kept
clear of obstacles.
- Follow the local laws and standards to dispose of the product.
- Do not work in a closed area.
- e work area must be blocked.
- e refrigerant pipes must be installed in a position where there
are no substances which can cause them to corrode.
- e following checks must be carried out for installation:
- e fan devices and the outlets work properly and are not
obstructed.
- e signs and signals on the equipment must be visible and
legible.
- Air out the room if any refrigerant leaks. Toxic gas could be
generated if the refrigerant leak is exposed to re.
- Make sure there are no ammable substances in the work area.
- Use a vacuum pump to bleed the air in the refrigerant.
- e refrigerant is odourless.
- e units are not explosion-proof. erefore they must be in-
stalled in areas without risk of explosion.
- is product contains uorinated gases which contribute to the
global greenhouse eect. For this reason do not release the gases
into the environment.
- To perform installation involving handling the refrigerant (R-32),
use dedicated tools and materials of the pipes.
- Maintenance and installation must be carried out according
to the manufacturer’s instructions. If other qualied persons
participate in maintenance, it must be carried out under the su-
pervision of personnel competent in handling slightly ammable
refrigerants.
- For maintenance of units containing slightly ammable refrig-
erants, safety checks must be performed to minimise the risk of
re.
- Maintenance must be carried out according to the control
procedure to minimise the risk of refrigerant or ammable gas
leakage.
- Do not install in places where there is the risk of combustible
gas escaping.
- Do not install near sources of heat.
- Pay attention not to generate sparks as follows:
- Do not remove the fuses while the unit is on.
- Do not unplug the unit while it is on.
- It is recommended to install the outlet high up. Lay the cables
in such a way that they do not get tangled.
- Aer installation, check for leaks. Toxic gases could be generated
in case of ignition with sources such as thermal fan, stove and
cylinders. Use only specic refrigerant gas recovery cylinders.
- is could cause serious injury from freezing.
- Never touch any accidental refrigerant leak directly.

12
4.3PREPARATION OF FIRE EXTINGUISHER.
- If hot work needs to be carried out, prepare adequate re-ghting
equipment.
- Set up a dry powder or CO2extinguisher in the vicinity of the
charging area.
4.4 FREE IGNITION SOURCES.
- Make sure to store the units in a place without ignition sources
in continuous operation (for example naked ames, gas-red
appliances or electric stoves).
- Maintenance technicians must not use ignition sources that
generate the risk of re or explosion.
- Potential ignition sources must be kept away from the work
area where the ammable refrigerant could be released in the
surrounding environment.
- e work area must be controlled to make sure that there are
no ammable substance hazards or risks of ignition. A “No
smoking” sign must be axed.
- Under no circumstances must potential ignition sources be used
during leak detection.
- Make sure that the gaskets and sealing materials are not worn.
- Safe parts are those with which personnel can work in a am-
mable environment. Other parts can cause ignition due to leaks.
- Only replace the components with the parts specied by the
supplier. Other parts can cause ignition of refrigerant in the
environment due to leaks.
4.5 VENTILATION OF THE AREA.
- Make sure that the work area is well ventilated before performing
hot work.
- Ventilation must also be carried out during work.
- Ventilation must safely disperse all of the released gases and
preferably expel them into the atmosphere.
4.6 LEAK DETECTION METHODS.
- e leak detector must be calibrated in an environment without
refrigerant.
- Make sure that the detector is not a potential source of ignition.
- e leak detector must be set at LFL (lower ammability limit).
- Detergents containing chlorine must not be used for cleaning
as the chlorine can react with the refrigerant and corrode the
piping.
- Remove naked ames if you suspect any leaks.
- If the leak is detected during braze welding, all of the refrigerant
must be recovered from the product or isolated (for example
using shut-o valves). It must not be released directly into the
environment. Oxygen-free nitrogen (OFN) must be used to
purge the system before and during the braze welding process.
- e work area must be controlled with an appropriate refrigerant
liquid detector before and during work.
- Make sure that the leak detector is suitable to be used with
ammable refrigerants.
4.7LABELLING.
- e parts must be labelled to guarantee that they have been
dismantled and refrigerant emptied.
- e labels must bear the date.
- Make sure that specic labels are applied on the system to inform
that it contains ammable refrigerant.

6 7
AUDAX PRO 4-6 V2 AUDAX PRO 9 V2
13
4.8RECOVERY.
- When the refrigerant is removed from the system to perform
maintenance or decommissioning, remove all of it (refer to
legislation in force in the country of destination).
- When the refrigerant is transferred to cylinders, make sure that
cylinders with refrigerant recovery are used, specic for slightly
ammable gas.
- All of the cylinders used for the recovered refrigerant must be
labelled.
- e cylinders must be equipped with pressure limiting valves
and shut-o valves in the correct order.
- e recovery system must work normally according to the spec-
ied instructions and must be suitable for refrigerant recovery.
- Furthermore, the calibration scales must work normally.
- e couplings of the exible hoses must not leak.
- e parts must be labelled to guarantee that they have been
decommissioned and refrigerant emptied. Consult the manu-
facturer if you suspect any leaks.
- e recovered refrigerant must be sent back to the supplier in
recovery cylinders with the Waste Transfer Note attached.
- Do not mix refrigerants in recovery units or cylinders.
- If compressors or compressor oils must be removed, make sure
that they have been evacuated to an acceptable level to guarantee
that no ammable refrigerant remains in the lubricant.
- e evacuation procedure must be performed before sending
the compressor to the supplier.
- Only electrical heating of the compressor body is allowed to
speed up the process.
- e oil must be safely drained from the system.
- Never install a motorised appliance to avoid ignition.
- Empty recovery cylinders must be vacuum and cooled before
recovery.
4.9 INSTALLATION PLACE REQUIREMENTS.
- e outdoor unit must be installed in an open space always
ventilated.
- Local regulations on gas must be complied with.
- For installation inside a building (whether the indoor unit or
outdoor unit installed inside) a minimum surface of the con-
ditioned area is mandatory according to IEC 60335-2-40: 2018
(see the reference table in the installation manuals of the indoor
or outdoor unit).
- To handle, bleed or dispose of the refrigerant or to interrupt the
refrigerant circuit, personnel must be in possession of a certicate
supplied by an accredited authority in the sector.
- Do not install the indoor unit if there are drainage issues.
4.10 MOVING THE OUTDOOR UNIT WITH WIRE
ROPES.
Fasten the outdoor unit with two wire ropes, 8 m or larger as
shown in gures 6 and 7. Insert a piece of cloth between the out-
door unit and the cables to protect it from damage or scratches,
then move the unit.
Cord Wire rope
Protective
cloth of the
panel
Protective
cloth

8
14
4.11 CLEARANCE REQUIREMENTS FOR THE OUTDOOR UNIT.
Installation of a single outdoor unit
When the air outlet is opposite the wall
When 3 sides of the outdoor unit are blocked by the wall
e top of the outdoor unit and the air outlet are opposite
the wall
e top of the outdoor unit and the air outlet are towards
the wall
When the front and rear parts of the outdoor unit are
towards the wall
When the air outlet is towards the wall
300 or more
300 or more
600 or more
1500 or more
1500 or more 300 or more
1500 or more
300 or more
300 or more
600 or more
2000 or more
(Unit: mm)

9
15
ATTENTION:
the units must be installed complying
with the specied distances so that it can
be accessed from both sides and to guarantee
the proper operation, maintenance and repair
of the appliance. e parts of the unit must be
able to be completely reached and removed it
safe conditions (or persons or objects).
Installation of several outdoor units
When the air outlet is towards the wall
1500 or more
(Unit: mm)
When 3 sides of the outdoor unit are blocked by the wall
300 or more
300 or more 600 or more
600 or more
1500 or more 3000 or more 3000 or more 300 or more600 or more
600 or more
600 or more 600 or more
When the front and rear parts of the outdoor unit are
towards the wall
When the front and rear parts of the outdoor unit are towards the wall
1500 or more 300 or more
500 or more500 or more
e top of the outdoor unit and the air outlet
are opposite the wall
300 or more
300 or more

10 11
12 13
660
880
310 340
364
620
940
328 344
384
20 mm
AUDAX PRO 4-6 V2 AUDAX PRO 9 V2
16
4.12 INSTALLING THE OUTDOOR UNIT.
e outdoor unit must be installed on a rigid and stable base to
prevent any increase in noise or vibration. In particular if the
outdoor unit needs to be installed in a position exposed to strong
winds or at a certain height, it must be appropriately secured to
the structure which supports it (oor or wall).
e anchor bolt must be at least 20 mm from the base
surface.
ATTENTION:
- when tightening the anchor bolt,
tighten the rubber washer so that
the connection part of the bolt to the
outdoor unit is not subject to corrosion.
- Make a discharge hole around the base for
drainage of the outdoor unit.
- If the outdoor unit is installed on the roof,
you must check the resistance of the ceiling
and waterproof the unit.
4.13MOUNT OF OUTDOOR UNIT.
Outdoor unit installed on the wall with mount.
- Make sure that the wall is capable of bearing the weight of the
mount and of the outdoor unit.
- Install the mount as near as possible to the column.
- Install an adequate gasket to reduce noise and residual vibration
transferred from the outdoor unit to the wall.
(Unit: mm) (Unit: mm)
Anchor bolt hole
Rubber feet
Anchor bolt hole
Outdoor
unit
Anchor bolt
Base
surface
Mount of
outdoor
unit

14 15
16
≥100 mm
30 mm
13mm
AUDAX PRO 4-6 V2 AUDAX PRO 9 V2
17
4.14 DRAIN.
General Area
When the condensing unit is running in central heating mode, ice
could start to build up on the external nned coil. To prevent the
ice from increasing, the system enters defrost mode, transforming
the ice on the surface into water. e water dripping on the external
nned coil is eliminated by making drainage holes to prevent the
ice from growing at low temperatures.
Additional drainages are required if there is not sucient space
to drain the unit. Follow the instructions below.
- Leave more than 100 mm between the bottom of the outdoor
unit and the ground to install the drain pipe.
- Insert the drain sleeve in the hole on the bottom side of the
outdoor unit.
- Connect the drain pipe to the drain sleeve.
- Make sure that no dust or small branches clog the drain pipe.
ATTENTION:
insucient drainage could downgrade
performance and damage the system.
1. Prepare a water discharge channel around the base, to drain
the water around the unit.
2. If the water does not drain easily, li the unit onto a cement
block base, etc. (the height of the foundation should be maximum
150 mm).
3. When installing the unit in a place subject to frequent snow-
falls, pay special attention to elevate the base as high as possible.
4. If the unit is installed on a frame, assemble a waterproof plate
(supplied on site) (within 150 mm from the lower side of the
unit) to prevent the drain water from dripping. (See gure 15):
Drain plug (4 pc)
Drain plug (1 pc)
Air vent ange
Drain sleeve
(1 pc) Drain plug (3 pc)Drain connector (1 pc)
Drain hole ø20 (4 pc)
Air exhaust side

17 18
80
mm
18
Area with intense snowfalls (natural drain)
Ice can build up when using the air conditioner in central heating
mode. During de-icing, the condensate water must be drained
safely. For the air conditioner to work properly, follow the in-
structions below.
- Leave more than 80 mm between the bottom of the outdoor unit
and the ground for the installation (see gure 17).
- If the product is installed in a region with heavy snowfalls, leave
sucient space between the product and the ground (see gure
18).
- When you install the product, make sure that the mount is not
positioned below the drain hole.
- Make sure that the drain water ows out correctly and safely.
Snow-proof roof
Frame
Ground
Estimated snowfall
ATTENTION:
- in zones subject to heavy snowfalls,
the snow buildup could block in the
air vents. To avoid this occurrence, install
a frame higher than the estimated level of
the snow. Furthermore install a snow-proof
roof to prevent the snow from piling up on
the outdoor unit.
- In zones subject to snowfalls, do not install
the discharge outlet and the drain plug in the
outdoor unit. ey could make the ground
freeze. erefore, take appropriate measures
to prevent it.

19
20 21
1
2
AUDAX PRO 4-6 V2 AUDAX PRO 9 V2
19
4.15 POSITIONING THE UNIT IN A RIGID CLIMATE.
To operate the appliance in low temperature outside
environmental conditions, follow the instructions
below.
- To avoid exposure to wind, install the unit with the intake side
facing the wall.
- Do not install the unit in a place where the intake side can be
directly exposed to the wind.
- To avoid exposure to the wind, install a deector on the air
exhaust side of the unit.
- In areas subject to heavy snowfalls, it is very important to choose
an installation site where snow does not aect the unit. If blow-
ing lateral snowfalls are possible, check that the coil of the heat
exchanger is not aected by the snow (if necessary, build a side
snow cover, see gure 19):
- Install the unit high enough above the ground so that it cannot
be buried in the snow.
- e fan inside the outdoor unit runs regularly, as established,
to prevent snow from building up inside the outdoor unit (see
Snow accumulation prevention control page 46).
- e outdoor unit must be installed considering the direction of
strong winds. ese can turn the unit. erefore the side of the
unit, and not the front, should face the wind (see gures 20 and
21).
Gust of air Exhaust air
Strong wind Strong wind Strong wind Strong wind
1. Build a large roof.
2. Build a pedestal.

22
20
ATTENTION:
- install the electric panel close to the
outdoor unit to make servicing and
emergency operation convenient.
- Make sure to install the switch with
protection against overcurrent and electric
leakage.
5ELECTRICAL CONNECTIONS.
5.1 GENERAL CONFIGURATION OF THE SYSTEM.
Connection of power cable (single phase 2 wires)
Distribution board
Single-phase with
2 wires
220V - 240V ~
Protection
switch
Communication cable
Outdoor unit Indoor unit
Unit supply
voltage
System integrating resistance
supply voltage
Single-phase with
2 wires
220V - 240V ~
Single-phase with
2 wires
220V - 240V ~
Earth