Carrier AquaForce 30XAV 500 Manual

INSTALLATION, OPERATION AND
MAINTENANCE INSTRUCTIONS
Variable-Speed Air-Cooled Screw Chillers
30XAV 500 - 1150
Original document
Nominal cooling capacity : 500 - 1150 kW
50 Hz

CONTENTS
1 - INTRODUCTION ..................................................................................................................................................................... 4
1.1 - Installation safety considerations ........................................................................................................................................... 4
1.2 - Equipment and components under pressure ........................................................................................................................ 5
1.3 - Maintenance safety considerations ........................................................................................................................................ 5
1.4 - Repair safety considerations................................................................................................................................................... 7
2 - PRELIMINARY CHECKS ...................................................................................................................................................... 8
2.1 - Check equipment received...................................................................................................................................................... 8
2.2 - Moving and siting the unit....................................................................................................................................................... 8
2.3 - Actual start-up .......................................................................................................................................................................... 9
3 - DIMENSIONS, CLEARANCES........................................................................................................................................... 10
3.1 - 30XAV 500-600 without hydronic kit .................................................................................................................................. 10
3.2 - 30XAV 500-600 with hydronic kit ........................................................................................................................................ 10
3.3 - 30XAV 700 ............................................................................................................................................................................ 11
3.4 - 30XAV 800 .............................................................................................................................................................................. 11
3.5 - 30XAV 950 .............................................................................................................................................................................. 12
3.6 - 30XAV 1050 ............................................................................................................................................................................ 12
3.7 - 30XAV 1150 ............................................................................................................................................................................ 13
3.8 - Multiple chiller installation ................................................................................................................................................... 13
3.9 - Distance to the wall................................................................................................................................................................ 13
4 - PHYSICAL AND ELECTRICAL DATA FOR 30XAV UNITS...................................................................................... 14
4.1 - Physical data 30XAV ............................................................................................................................................................. 14
4.2 - Electrical data 30XAV........................................................................................................................................................... 15
4.3 - Short-circuit stability current for 30XAV units .................................................................................................................. 15
4.4 - Electrical data, optional hydronic module .......................................................................................................................... 16
4.5 - Compressor electrical data 30XAV...................................................................................................................................... 17
4.6 - Compressor usage per circuit(A, B).....................................................................................................................................17
5 - ELECTRICAL CONNECTION............................................................................................................................................ 18
5.1 - Power supply........................................................................................................................................................................... 18
5.2 - Voltage phase imbalance (%) .............................................................................................................................................. 18
5.3 - Power connection/disconnect switch.................................................................................................................................... 18
5.4 - Recommended wire sections ................................................................................................................................................ 18
5.5 - Power cable entry................................................................................................................................................................... 18
5.6 - Field control wiring ................................................................................................................................................................ 19
5.7 - Electric and power reserve for the user............................................................................................................................... 19
6 - APPLICATION DATA ........................................................................................................................................................... 20
6.1 - Operating range...................................................................................................................................................................... 20
6.2 - Minimum chilled water ow (units without hydronic module) ........................................................................................ 20
6.3 - Maximum chilled water ow (units without hydronic module) ....................................................................................... 20
6.4 - Variable ow evaporator ....................................................................................................................................................... 21
6.5 - System minimum water volume ........................................................................................................................................... 21
6.6 - Evaporator water ow rate ................................................................................................................................................... 21
6.7 - Evaporator pressure drop curve.......................................................................................................................................... 21
7 - WATER CONNECTIONS...................................................................................................................................................... 22
ATTENTION: BEFORE CARRYING OUT ANY WATER CONNECTIONS INSTALL THE WATER BOX DRAIN
PLUGS (ONE PLUG PER WATER BOX IN THE LOWER SECTION - SUPPLIED IN THE CONTROL BOX).. 22
7.1 - Operating precautions ........................................................................................................................................................... 22
7.2 - Victaulic water connections................................................................................................................................................... 23
7.3 - Flow detection ........................................................................................................................................................................ 25
7.4 - Evaporator water box bolt tightening..................................................................................................................................25
7.5 - Freeze protection.................................................................................................................................................................... 25
7.6 - Protection against cavitation (with option 116).................................................................................................................. 25
7.7 - Operation of two units in master/slave mode (option 58)................................................................................................. 26
8 - UNIT WITH HYDRONIC KIT ............................................................................................................................................. 27
8.1 - Available static pressure for the system............................................................................................................................... 27
8.2 - NPSH (Net Positive Suction Head) required ; Hydronic module option........................................................................ 28
8.3 - Flow rate and cooling capacity calculations........................................................................................................................ 28

The images shown on the cover page and in this document are for illustrative purposes only and are not contractual.
The manufacturer reserves the right to change the design at any time without notice.
9 - MAJOR SYSTEM COMPONENTS AND OPERATION DATA.................................................................................. 29
9.1 - Compressor ............................................................................................................................................................................ 29
9.2 - Oil lter ................................................................................................................................................................................... 29
9.3 - Refrigerant..............................................................................................................................................................................29
9.4 - Lubricant ................................................................................................................................................................................. 29
9.5 - Oil supply solenoid valve.......................................................................................................................................................29
9.6 - Suction and economiser screens........................................................................................................................................... 29
9.7 - Pressure vessels....................................................................................................................................................................... 29
9.8 - High-pressure safety switch .................................................................................................................................................. 30
9.9 - Condensers.............................................................................................................................................................................. 30
9.10 - Fans ........................................................................................................................................................................................ 30
9.11 - Electronic expansion valve (EXV) .................................................................................................................................... 31
9.12 - Moisture indicator................................................................................................................................................................ 31
9.13 - Filter drier ............................................................................................................................................................................. 31
9.14 - Sensors................................................................................................................................................................................... 31
9.15 - Service valve (option 92)..................................................................................................................................................... 32
9.16 - Variable frequency drive...................................................................................................................................................... 32
10 - OPTIONS ............................................................................................................................................................................... 33
11 - STANDARD MAINTENANCE.......................................................................................................................................... 35
11.1 - Level 1 maintenance ............................................................................................................................................................ 35
11.2 - Level 2 maintenance ............................................................................................................................................................ 35
11.3 - Level 3 (or higher) maintenance ........................................................................................................................................ 35
11.4 - Tightening torques for the main electrical connections................................................................................................... 36
11.5 - Tightening torques for the main bolts and screws..........................................................................................................................36
11.6 - Condenser coil ...................................................................................................................................................................... 36
11.7 - Evaporator maintenance..................................................................................................................................................... 37
11.8 - Compressor maintenance.................................................................................................................................................... 37
11.9 - Variable frequency drive maintenance ............................................................................................................................. 37
12 - CHECKLIST TO BE MADE BY THE INSTALLER BEFORE CALLING CARRIER SERVICE
COMMISSIONING UNIT ........................................................................................................................................................... 38

4

The 30XAV Aquaforce units are designed to cool water for
the air conditioning of buildings and industrial processes.
Prior to the initial start-up of the 30XAV units, the people
involved in the on-site installation, start-up, operation, and
maintenance of this unit should be thoroughly familiar with
these instructions and the specific project data for the
installation site.
The 30XAV liquid chillers are designed to provide a very high
level of safety during installation, start-up, operation and
maintenance. They will provide safe and reliable service if
used within their application range.
They are designed for an operating life of 15 years by
assuming a 75% utilisation factor; that is approximately
100,000 operating hours.
Always ensure that all required safety measures are followed,
including those in this document, such as: wearing protective
clothing (gloves, ear defenders, safety glasses and shoes), using
appropriate tools, employing qualied and skilled technicians
(electricians, refrigeration engineers) and following local
regulations.
To find out, if these products comply with European
directives (machine safety, low voltage, electromagnetic
compatibility, equipment under pressure etc.) check the
declarations of conformity for these products.

Access to the unit must be restricted to authorised personnel,
trained and qualified in monitoring and maintenance
procedures. Access limitation is the responsibility of the
customer.
After the unit has been received, when it is ready to be
installed or reinstalled, and before it is started up, it must be
inspected for damage. Check that the refrigerant circuit(s)
is (are) intact, especially that no components or pipes have
shifted (e.g. following a shock). If in doubt, carry out a leak
tightness check and verify with the manufacturer that the
circuit integrity has not been impaired. If damage is detected
upon receipt, immediately le a claim with the shipping
company.
Carrier strongly recommends employing a specialised
company to unload the machine.
Do not remove the skid or the packaging until the unit is
in its nal position. These units can be moved with a fork
lift truck, as long as the forks are positioned in the right
place and direction on the unit.
The units can also be lifted with slings, using only the
designated lifting points marked on the unit.
Use slings with the correct capacity, and always follow the
lifting instructions on the certied drawings supplied with
the unit.
Safety is only guaranteed, if these instructions are carefully
followed. If this is not the case, there is a risk of failure and
injuries to personnel.
DO NOT COVER ANY PROTECTION DEVICES. This
applies to fuse plugs and relief valves (if used) in the
refrigerant or heat transfer medium circuits. Check if the
original protection plugs are still present at the valve outlets.
These plugs are generally made of plastic and should not be
used. If they are still present, please remove them. Install
devices at the valve outlets or drain piping that prevent the
penetration of foreign bodies (dust, building debris, etc.) and
atmospheric agents (water can form rust or ice). These
devices, as well as the drain piping, must not impair
operation and not lead to a pressure drop that is higher than
10% of the control pressure.
Classication and control:
In accordance with the Pressure Equipment Directive and
national usage monitoring regulations in the European
Union, the protection devices when tted to these machines
are classied as follows:






High-pressure switch X
External relief valve*** X
Rupture disk X
Fuse plug X

External relief valve**** X X
* Classiedforprotectioninnormalservicesituations.
** Classiedforprotectioninabnormalservicesituations.
*** The instantaneous over-pressure limited to 10% of the operating pressure does not apply
tothisabnormalservicesituation.Thecontrolpressurecanbehigherthantheservice
pressure.Inthiscaseeitherthedesigntemperatureorthehigh-pressureswitchensures
thattheservicepressureisnotexceededinnormalservicesituations.
**** Theclassicationofthesereliefvalvemustbemadebythepersonnelthatcompletesthe
wholehydronicinstallation.
Do not remove valves / fusible plugs, even if the re risk is
under control for a particular installation. There is no
guarantee that the accessories are re-installed if the
installation is changed or for transport with a gas charge.
When the unit is subjected to re, safety devices prevent
rupture due to over-pressure by releasing refrigerant. The
uid may then be decomposed into toxic residues when
subjected to the ame:
• Stay away from the unit.
• Set up warnings and recommendations for personnel
in charge to stop the re.
• Fire extinguishers appropriate to the system and the
refrigerant type must be easily accessible.
All factory -installed relief valves are lead-sealed to prevent
any calibration change. The external relief valves must
always be connected to vent pipes for units installed in a
closed room. Refer to the installation regulations, for
example those of European standard EN 378 and EN 13136.
These pipes must be installed in a way that ensures that
people and property are not exposed to vented refrigerant.
As the uids can be diffused in the air, ensure that refrigerant
is discharged away from building air intakes, relief valves
must be checked periodically. See paragraph “Maintenance
safety considerations”
Provide a drain in the vent pipe, close to each relief valve, to
avoid an accumulation of condensate or rain water.
All precautions concerning handling of refrigerant must be
observed in accordance with local regulations.

5
Ensure good ventilation, as accumulation of refrigerant in
an enclosed space can displace oxygen and cause
asphyxiation or explosions.
Inhalation of high concentrations of vapour is harmful and
may cause heart irregularities, unconsciousness, or death.
Vapour is heavier than air and reduces the amount of oxygen
available for breathing. These products cause eye and skin
irritation. Decomposition products are hazardous.

These products incorporate equipment or components under
pressure, manufactured by Carrier or other manufacturers.
Ensure that you are familiar with the appropriate national
regulations / guidance for the ownership,use and maintenance
of such systems. The characteristics of this equipment/these
components are given on the nameplate or in the required
documentation, supplied with the products.
These units comply with the European Pressure Equipment
Directive.
The units are intended to be stored and operate in an
environment where the ambient temperature must not be less
than the lowest temperature indicated on the nameplate. Do
not introduce high static and dynamic pressure compared with
the existing operating pressures used during operation or for
tests in the refrigerant circuit or in the heat exchange circuits.
NOTES: Monitoring during operation, re-qualication,
retesting, exemption from retesting:
• Follow local regulations on the monitoring of pressure-
containing equipment.
• The user or the operator is usually requested to create
and maintainx a monitoring and maintenance register.
• In absence of regulation or in addition to the
regulations, follow the guidance in EN 378.
• Follow the local professional recommendations,
whenever they exist.
• Regularly monitor the surface of the components to
detect cavernous corrosion. To do this, check an
uninsulated part of the pressure vessel or at a joint in
the insulation.
• Regularly check for possible presence of impurities (e.g.
silicon grains) in the heat exchange fluids. These
impurities can cause wear and/or pitting corrosion.
• Filter the heat exchange uid.
• The reports of the periodical checks by the user or the
operator must be included in the monitoring and
maintenance register.
REPAIR:
Any repair or modification of a pressurised vessel is
prohibited.
Only the replacement of the vessel by an original part from
the manufacturer is allowed. In this case, the replacement
must be carried out by a qualied operator.
The replacement of the vessel must be entered in the
monitoring and maintenance register.
RECYCLING:
The pressure equipment can be recycled in whole or in part.
After use they may contain refrigerant vapours and oil
residue. Some parts are painted.

Carrier recommends the following drafting for a logbook
(the table below should not be considered as reference and
does not involve Carrier responsibility):
 







  (1)
(1) Maintenance,repairs,regularverications(EN378),leakage,etc.
Engineers working on the electrical or refrigeration
components must be authorised, trained and fully qualied to
do so.
All refrigerant circuit work must be carried out by a trained
person, fully qualied to work on these units. He/she must
have been trained and be familiar with the equipment and
the installation. All welding operations must be carried out
by qualied specialists.
Any manipulation (opening or closing) of a shut-off valve
must be carried out by a qualied and authorised engineer,
observing applicable standards (e.g. during draining
operations). The unit must be switched off during
maintenance.
NOTE: The unit must never be left shut down with the liquid
line valve closed, as liquid refrigerant can be trapped between
this valve and the expansion device and lead to the risk of
a pressure increase. This valve is situated on the liquid line
before the lter drier box.
During any handling, maintenance and service operations
the engineers working on the unit must be equipped with
safety gloves, glasses, shoes and protective clothing.
Never work on any of the electrical components, until the
general power supply to the unit has been cut using the
disconnect switch(es) in the control box(es).
If any maintenance operations are carried out on the unit,
lock the power supply circuit in the open position ahead of
the machine.
CAUTION: The variable frequency drives used in the
30XAV units are equipped with capacitor batteries with a
discharge time of twenty (20) minutes after disconnecting
the power supply. After disconnecting the power supply of
the control box, wait twenty minutes before opening the
control box. Before any intervention, verify that there is no
voltage present at any accessible conducting parts of the
power circuit.
If the work is interrupted, always ensure that all circuits
are still deenergised before resuming the work.
ATTENTION: Even if the unit has been switched off, the
power circuit remains energised, unless the unit or circuit
disconnect switch is open. Refer to the wiring diagram for
further details. Attach appropriate safety labels.
When working in a fan area, specically if the grilles have
to be removed, isolate the power supply to the fans to prevent
their operation

6
OPERATING CHECKS:
IMPORTANT INFORMATION REGARDING THE
REFRIGERANT USED:
• This product contains fluorinated greenhouse gas
covered by the Kyoto protocol.
• Fluid type: R134a
• Global Warming Potential (GWP): 1430
CAUTION:
1. Any intervention on the refrigerant circuit of this
product should be performed in accordance with the
applicable legislation. In the EU, the regulation is
called F-Gas, N°517/2014.
2. Ensure that the refrigerant is never released to the
atmosphere during installation, maintenance or
equipment disposal.
3. The deliberate gas release into the atmosphere is not
allowed.
4. If a refrigerant leak is detected, ensure that it is stopped
and repaired as quickly as possible.
5. Only a qualied and certied personnel can perform
installation operations, maintenance, refrigerant
circuit leak test as well as the equipment disposal and
the refrigerant recovering.
6. The gas recovery for recycling, regeneration or
destruction is at customer charge.
7. Periodic leak tests have to be carried out by the
customer or by third parties. The EU regulation set the
periodicity here after
SystemWITHOUTleakage
detection
No
check
12 months 6 months 3months
SystemWITHleakage
detection
No
check
24 months 12 months 6 months
Refrigerant charge/circuit
(CO2equivalent)
< 5 tons 5≤charge
< 50 tons
50≤charge
< 500 tons
Charge
> 500
tons*
Refrigerant
charge/circuit
(kg)
R134a
(GWP
1430)
Charge
<3.5kg
3.5≤charge
<34.9kg
34.9≤charge
<349.7kg
Charge
>349.7kg
R407C
(GWP
1774)
Charge
<2.8kg
2.8≤charge
<28.2kg
28.2≤charge
<281.9kg
Charge
>281.9kg
R410A
(GWP
2088)
Charge
<2.4kg
2.4≤charge
<23.9kg
23.9≤charge
<239.5kg
Charge
>239.5kg
HFO’s :
R1234ze No requirement
*From01/01/2017,unitsmustbeequippedwithaleakagedetectionsystem
8. A logbook must be established for equipments subject
to periodic leak tests. It should contain the quantity
and the type of uid present within the installation
(added and recovered), the quantity of recycled uid,
regenerated or destroyed, the date and output of the
leak test, the designation of the operator and its
belonging company, etc.
9. Contact your local dealer or installer if you have any
questions.
Information on operating inspections given in EN 378
standard can be used when similar criteria do not exist in the
national regulation.
PROTECTION DEVICE CHECKS:
• If no national regulations exist, check the protection
devices on site in accordance with standard EN 378:
once a year for the high-pressure switches, every ve
years for external relief valves.
The company or organisation that conducts a pressure switch
test must establish and implement a detailed procedure to
x:
- Safety measures
- Measuring equipment calibration
- Validating operation of protective devices
- Test protocols
- Recommissioning of the equipment.
Consult Carrier Service for this type of test. Carrier mentions
here only the principle of a test without removing the
pressure switch:
- Verify and and record the set-points of pressure
switches and relief devices (valves and possible rupture
discs)
- Be ready to switch-off the main disconnect switch of
the power supply if the pressure switch does not trigger
(avoid over-pressure or excess gas in case of valves on
the high-pressure side with the recovery condensers)
- Connect a pressure gauge protected against pulsations
(lled with oil with maximum pointer if mechanical),
preferably calibrated (the values displayed on the user
interface may be inaccurate in an instant reading
because of the scanning delay applied in the control)
- Complete an HP Test as provided by the software (refer
to the Control IOM for details).
CAUTION: If the test leads to replacing the pressure switch,
it is necessary to recover the refrigerant charge, these pressure
switches are not installed on automatic valves (Schraeder
type).
At least once a year, visually inspect the protection devices
(valves, pressure switches).
If the machine operates in a corrosive environment, inspect
the protection devices more frequently.
Check regularly for leaks and repair immediately. Ensure
regularly that the vibration levels remain acceptable and
close to those at the initial unit start-up.
After an equipment failure, carry out a refrigerant analysis
at a specialist laboratory. If required, change the refrigerant
following a procedure such as that described in NF E29-795.
If the refrigerant circuit remains open after an intervention
(such as a component replacement, etc.):
• Seal the openings if the duration is less than a day
• If more than 1 day, charge the circuit with oxygen free
nitrogen (inertia principle).
The objective is to prevent penetration of atmospheric
humidity and the resulting corrosion.

7

All installed parts must be maintained by the personnel in
charge, in order to avoid deterioration and injury. Faults and
leaks must be repaired immediately.The authorised technician
must have the responsibility to repair the fault immediately.
After each repair of the unit, check the operation of the
protection devices and record their correct operation in the
maintenance log.
Comply with the regulations and recommendations in unit
and HVAC installation safety standards, such as: EN 378,
ISO 5149, etc.
If a leak occurs or if the refrigerant becomes contaminated
(e.g.by a short circuit in a motor) remove the complete charge
using a recovery unit and store the refrigerant in mobile
containers. The compressors do not allow to transfer the
refrigerant charge and can be broken if they are used to pump
down. The refrigerant charge should not be transferred to
the high-pressure side.
Repair the leak, detect and recharge the circuit with the total
R-134A charge, as indicated on the unit name plate. Certain
parts of the circuit can be isolated. Only charge liquid
refrigerant R-134A at the liquid line.
Always ensure you are using the correct refrigerant type
before recharging the unit. Charging any refrigerant other
than the original type (R-134A) will impair machine
operation and can even lead to a destruction of the
compressors.The compressors operating with this refrigerant
type are lubricated with a synthetic polyolester oil.
RISK OF EXPLOSION:
Never use air or a gas containing oxygen during leak tests to
purge lines or to pressurise a machine. Pressurised air mixtures
or gases containing oxygen can be the cause of an explosion.
Only use dry nitrogen for leak tests, possibly with an
appropriate tracer gas.
If the recommendations above are not observed, this can
have serious or even fatal consequences and damage the
installation.
Never exceed the specied maximum operating pressures.
Verify the allowable maximum high- and low- side test
pressures by checking the instructions in this manual and the
pressures given on the unit name plate.
Do not unweld or amecut the refrigerant lines or any
refrigerant circuit component until all refrigerant (liquid and
vapour) as well as the oil have been removed from chiller.
Traces of vapour should be displaced with dry nitrogen.
Refrigerant in contact with an open ame produces toxic
gases.
The necessary protection equipment must be available, and
appropriate fire extinguishers for the system and the
refrigerant type used must be within easy reach.
Do not siphon refrigerant.
Avoid spilling liquid refrigerant on skin or splashing it into
the eyes. Use safety goggles and safety gloves.Wash any spills
from the skin with soap and water.If liquid refrigerant enters
the eyes, immediately and abundantly ush the eyes with
water and consult a doctor.
The accidental releases of the refrigerant, due to small leaks
or signicant discharges following the rupture of a pipe or
an unexpected release from a relief valve, can cause
frostbites and burns to personnel exposed. Do not ignore
such injuries. Installers, owners and especially service
engineers for these units must:
-Seek medical attention before treating such injuries.
-Have access to a rst-aid kit, especially for treating
eye injuries.
We recommend to apply standard EN 378-3 Annex 3.
Never apply an open ame or live steam to a refrigerant
container. Dangerous overpressure can result. If it is
necessary to heat refrigerant, use only warm water.
During refrigerant removal and storage operations follow
applicable regulations. These regulations, permitting
conditioning and recovery of halogenated hydrocarbons
under optimum quality conditions for the products and
optimum safety conditions for people, property and the
environment are described in standard NF E29-795.
Any refrigerant transfer and recovery operations must be
carried out using a transfer unit. A 3/8” SAE connector on
the manual liquid line valve is supplied with all units for
connection to the transfer station. The units must never be
modied to add refrigerant and oil charging, removal and
purging devices.All these devices are provided with the units.
Please refer to the certied dimensional drawings for the
units.
Do not re-use disposable (non-returnable) cylinders or
attempt to rell them. It is dangerous and illegal. When
cylinders are empty, evacuate the remaining gas pressure,
and move the cylinders to a place designated for their
recovery. Do not incinerate.
ATTENTION: Only use refrigerant R134a, in accordance
with 700 AHRI (Air conditioning, Heating and Refrigera-
tion Institute). The use of any other refrigerant may expose
users and operators to unexpected risks.
Do not attempt to remove refrigerant circuit components
or ttings, while the machine is under pressure or while it
is running. Be sure pressure is at 0 kPa and that the unit
has been shut-down and de-energised before removing
components or opening a circuit.
When the refrigerant circuit is opened for repair, it is
mandatory to plug all openings of the circuit if the repair
exceeds 30 minutes; this is to avoid moisture absorbed in
the circuit, especially in the oil. If the scheduled intervention
is longer, the circuit must be charged with nitrogen.
Do not attempt to repair or recondition any safety devices
when corrosion or build-up of foreign material (rust, dirt,
scale, etc.) is found within the valve body or mechanism. If
necessary, replace the device.
Do not install relief valves in series or backwards.

8
ATTENTION: No part of the unit must be used as a walk-
way, rack or support. Periodically check and repair or if
necessary replace any component or piping that shows signs
of damage.
The refrigerant lines can break under the weight and release
refrigerant, causing personal injury.
Do not climb on a machine. Use a platform, or staging to
work at higher levels.
Use mechanical lifting equipment (crane, hoist, winch, etc.)
to lift or move heavy components. For lighter components,
use lifting equipment when there is a risk of slipping or losing
your balance.
Use only original replacement parts for any repair or
component replacement. Consult the list of replacement
parts that corresponds to the specication of the original
equipment.
Do not drain water circuits containing industrial brines,
without informing the technical service department at the
installation site or a competent body rst.
Close the entering and leaving water shutoff valves and drain the
unit water circuit, before working on the components installed on
the circuit (screen lter, pump, water ow switch, etc.).
Do not loosen the water box bolts until the water boxes have
been completely drained.
Periodically inspect all valves, fittings and pipes of the
refrigerant and hydronic circuits to ensure that they do not
show any corrosion or any signs of leaks.
It is recommended to wear ear defenders, when working near
the unit and the unit is in operation.


• Check that the unit has not been damaged during
transport and that no parts are missing. If the unit has
been damaged or the shipment is incomplete, send a
claim to the shipping company.
• Compare the name plate data with the order. The name
plate is attached in two places to the unit:
- On one of the unit sides on the outside
- On the control box door on the inside.
• The unit name plate must include the following
information:
- Version number
- Model number
- CE marking
- Serial number
- Year of manufacture and test date
- Refrigerant used and refrigerant class
- Refrigerant charge per circuit
- Containment uid to be used
- PS:Min./max. allowable pressure (high and low pressure
side)
- TS: Min./max. allowable temperature (high and low
pressure side)
- Pressure switch cut-out pressure
- Unit leak test pressure
- Voltage, frequency, number of phases
- Maximum current drawn
- Maximum power input
- Unit net weight
• Confirm that all accessories ordered for on-site
installation have been delivered and are complete and
undamaged.
The unit must be checked periodically during its whole
operating life to ensure that no shocks (handling accessories,
tools etc.) have damaged it. If necessary, damaged parts must
be repaired or replaced. See also chapter 8 - “Standard
maintenance”.

2.2.1 - Moving
See chapter 1.1 “Installation safety considerations”.
2.2.2 - Placing the unit
The machine must be installed in a place that is not accessible
to the public or protected against access by non-authorised
persons.
In case of extra-high units the machine environment must
permit easy access for maintenance operations.
Always refer to the chapter 3 “Dimensions, clearances” to
conrm that there is adequate space for all connections and
service operations. For the centre of gravity coordinates, the
position of the unit mounting holes, and the weight
distribution points, refer to the certied dimensional drawing
supplied with the unit.
The support points under the chassis must have at least the
size of the chassis opening at the lifting point (minimum 220
x 180 mm) in order to prevent a deformation of the chassis.
Typical applications of these units are in refrigeration
systems, and they do not require earthquake resistance.
Earthquake resistance has not been veried.
CAUTION: Only use slings at the designated lifting points
which are marked on the unit.
Before siting the unit check that:
• The permitted loading at the site is adequate or that
appropriate strenghtening measures have been taken.
• The unit is installed level on an even surface (maximum
tolerance is 5 mm in both axes).
• There is adequate space above the unit for air ow and
to ensure access to the components.
• If the support structure is sensitive to vibration and/or
noise transmission, it is advisable to insert anti-vibration
mounts (elastomeric mounts or springs) between the
unit and the structure.Selection of these devices is based
on the system characteristics and the comfort level
required and should be made by technical specialists.
• The number of support points is adequate and that they
are in the right places.
• The location is not subject to ooding.
• For outdoor installations, where heavy snowfall is likely
and long periods of sub-zero temperatures are normal,
provision has to be made to prevent snow accumulating
by raising the unit above the height of drifts normally

9
experienced.
• Bafes may be necessary to deect strong winds. They
must not restrict air ow into the unit.
CAUTION: Before lifting the unit, check that all casing
panels are securely xed in place. Lift and set down the unit
with great care. Tilting and jarring can damage the unit and
impair unit operation.
If 30XAV units are hoisted with rigging, it is advisable to
protect coils against crushing while a unit is being moved.
Use struts or spreader bar to spread the slings above the unit.
Do not tilt a unit more than 15°.
WARNING: Never push or lever on any of the enclosure
panels of the unit. Only the base of the unit frame is designed
to withstand such stresses.
No force or effort must be applied to pressurised parts,
especially via pipes connected to the evaporator.
2.2.3 - Checks before system start-up
Before the start-up of the refrigeration system, the complete
installation, including the refrigeration system must be
verified against the installation drawings, dimensional
drawings, system piping and instrumentation diagrams and
the wiring diagrams.
Heat exchange fluid temperatures above the maximum
recommended can lead to an increase in the refrigerant
pressure and can cause a loss of refrigerant due to the relief
valve discharge.
For these checks national regulations must be followed. If
the national regulation does not specify any details, refer to
standard EN 378 as follows:
External visual installation checks:
• Compare the complete installation with the refrigeration
system and power circuit diagrams.
• Check that all components comply with the design
specications.
• Check that all protection documents and equipment
provided by the manufacturer (dimensional drawings,
P&ID, declarations, etc.) to comply with the regulations
are present.
• Verify that the environmental safety and protection
devices and arrangements provided by the manufacturer
to comply with the regulations are in place.
• Verify that all documents for pressure containers, certicates,
name plates, les, instruction manuals provided by the
manufacturer to comply with the regulations are present.
• Verify the free passage of access and safety routes.
• Check that ventilation in the plant room is adequate.
• Check that refrigerant detectors are present.
• Verify the instructions and directives to prevent the
venting removal of refrigerant gases that are harmful to
the environment.
• Verify the installation of connections.
• Verify the supports and fixing elements (materials,
routing and connection).
• Verify the quality of welds and other joints.
• Check the protection against mechanical damage.
• Check the protection against heat.
• Check the protection of moving parts.
• Verify the accessibility for maintenance or repair and
to check the piping.
• Verify the status of the valves.
• Verify the quality of the thermal insulation and of the
vapour barriers.

Never be tempted to start the chiller without reading fully,
and understanding, the operating instructions and without
having carried out the following pre-start checks:
• Check the chilled water circulation pumps, the air
handling equipment and any other device connected to
the evaporator.
• Refer to the manufacturer instructions.
• Refer to the electrical diagram delivered with the unit.
• Ensure that there is no refrigerant leak.
• Check the tightening of xing clamps of all pipes.
• Check the power supply at the main connection point
and the order of phases.
• Check the correct operation of the heaters and check
that they are correctly energised.
WARNING: Commissioning and start-up of the chiller must
be supervised by a qualied refrigeration engineer.
• Start-up and operating tests must be carried out with
a thermal load applied and water circulation in the
evaporator.
• All set-point adjustments and control tests must be
carried out before the unit is started up.
• Refer to the Service guide 30XAV.
Proceed with the unit commissioning.
Ensure that all safety devices are operational, especially
that the high pressure switches are functioning and that any
alarms have been acknowledged and corrected.
NOTE: If the Carrier instructions (power and water
connections and installation) are not observed, the Carrier
warranty becomes invalid.

10




Alldimensionsaregiveninmm.
Required clearances for maintenance (see note)
Recommendedspaceforevaporatortuberemoval
Water inlet for standard unit
Foroptions5,6,100A,100C,107refertothecertieddrawing.
Water outlet for standard unit
Foroptions5,6,100A,100C,107refertothecertieddrawing.
Airoutlet–donotobstruct
Power supply and control connection
CControlcircuitconnectionforoption158
NOTES:
• Drawings are not contractually binding.
• Before designing an installation, consult the certied
dimensional drawings, available on request.
• For the positioning of the fixing points, weight
distribution and centre of gravity coordinates please
refer to the dimensional drawings.
• If any unit(s) are close to walls, please refer to chapters
3.8 - 3.9 - “Distance to the wall” of this document to
determine the space required.

11
3.3 - 30XAV 700
3.4 - 30XAV 800

Alldimensionsaregiveninmm.
Required clearances for maintenance (see note)
Recommendedspaceforevaporatortuberemoval
Water inlet for standard unit
Foroptions5,6,100A,100C,107refertothecertieddrawing.
Water outlet for standard unit
Foroptions5,6,100A,100C,107refertothecertieddrawing.
Airoutlet–donotobstruct
Power supply and control connection
CControlcircuitconnectionforoption158
NOTES:
• Drawings are not contractually binding.
• Before designing an installation, consult the certied
dimensional drawings, available on request.
• For the positioning of the fixing points, weight
distribution and centre of gravity coordinates please
refer to the dimensional drawings.
• If any unit(s) are close to walls, please refer to chapters
3.8 - 3.9 - “Distance to the wall” of this document to
determine the space required.

12
3.5 - 30XAV 950
3.6 - 30XAV 1050

Alldimensionsaregiveninmm.
Required clearances for maintenance (see note)
Recommendedspaceforevaporatortuberemoval
Water inlet for standard unit
Foroptions5,6,100A,100C,107refertothecertieddrawing.
Water outlet for standard unit
Foroptions5,6,100A,100C,107refertothecertieddrawing.
Airoutlet–donotobstruct
Power supply and control connection
CControlcircuitconnectionforoption158
NOTES:
• Drawings are not contractually binding.
• Before designing an installation, consult the certied
dimensional drawings, available on request.
• For the positioning of the fixing points, weight
distribution and centre of gravity coordinates please
refer to the dimensional drawings.
• If any unit(s) are close to walls, please refer to chapters
3.8 - 3.9 - “Distance to the wall” of this document to
determine the space required.

13
3.7 - 30XAV 1150

It is recommended to install multiple chillers in a single row,
arranged as shown in the example below, to avoid recycling
of warm air from one unit to another.
1.5m
mini
1.5m
mini
If the situation at the site does not permit this arrangement,
contact your Carrier distributor to evaluate the various
possible arrangements. In certain situations an accessory
(supplied loose at the time of purchase) can be added.

To ensure correct operation for most cases:
If h < H (2.3 m), minimum S = 3 m
If h > H or S < 3 m, contact your Carrier distributor to
evaluate the various possible arrangements. In certain
situations an accessory (supplied loose at the time of
purchase) can be added.
HS
h
Wall
Anti-vibration
mounts

Alldimensionsaregiveninmm.
Required clearances for maintenance (see note)
Recommendedspaceforevaporatortuberemoval
Water inlet for standard unit
Foroptions5,6,100A,100C,107refertothecertieddrawing.
Water outlet for standard unit
Foroptions5,6,100A,100C,107refertothecertieddrawing.
Airoutlet–donotobstruct
Power supply and control connection
CControlcircuitconnectionforoption158
NOTES:
• Drawings are not contractually binding.
• Before designing an installation, consult the certied
dimensional drawings, available on request.
• For the positioning of the fixing points, weight
distribution and centre of gravity coordinates please
refer to the dimensional drawings.
• If any unit(s) are close to walls, please refer to chapters
3.8 - 3.9 - “Distance to the wall” of this document to
determine the space required.

14


30XAV 500 600 700 800 950 1050 1150


Sound power level*** dB(A) 102 103 103 103 105 106 106
Sound pressure level at 10 m**** dB(A) 70 70 70 70 72 73 73

Sound power level*** dB(A) 99 100 100 100 102 103 103
Sound pressure level at 10 m**** dB(A) 67 68 68 67 69 70 70

Sound power level*** dB(A) 96 97 97 97 99 100 100
Sound pressure level at 10 m**** dB(A) 63 65 64 64 66 67 67

Length mm 6092 6092 7186 8380 9573 10767 11962
Width mm 2253 2253 2253 2253 2253 2253 2253
Height mm 2297 2297 2297 2297 2297 2297 2297

Standard unit kg 4831 5219 5767 6420 6806 7687 8076

Circuit A 1 1 1 1 1 1 1
Circuit B 1 1 1 1 1 1 1
 
Circuit A kg 50 52 56 64 79 80 84
teqCO271.5 74.4 80.1 91.5 113.0 114.4 120.1
Circuit B kg 43 54 58 67 71 82 87
teqCO261.5 77.2 82.9 95.8 101.5 117.3 124.4
 
Minimum capacity***** % 10 10 10 10 10 10 10
 All aluminium Micro Channel Heat Exchanger (MCHE)
 AxialFLYING-BIRDIVfanswithrotatingshroud
Quantity 910 12 14 16 18 20
Maximumtotalairow l/s 40608 45120 54144 63168 72192 81216 90240
Maximum rotational speed rps 15.7 15.7 15.7 15.7 15.7 15.7 15.7
 Flooded multi-pipe type
Water volume l 75 90 90 110 120 134 146
Max water-side operating pressure 1000 1000 1000 1000 1000 1000 1000
 
Diameter inch566668 8
Outsidetubediameter mm 141.3 168.3 168.3 168.3 168.3 219.1 219.1
 Colourcode:RAL7035
* Options:257=lowsoundlevel,279=compressorenclosure
** Valuesareguidelinesonly.Refertotheunitnameplate.
*** IndBref=10-12W,(A)weighting.DeclareddualnumbernoiseemissionvaluesinaccordancewithISO4871(withanassociateduncertaintyof+/-3dB(A)).MeasuredinaccordancewithISO
9614-1andcertiedbyEurovent.
**** IndBref20μPa,(A)weighting.DeclareddualnumbernoiseemissionvaluesinaccordancewithISO4871(withanassociateduncertaintyof+/-3dB(A)).Forinformation,calculatedfromthe
soundpowerlevelLw(A).
***** Forstandardconditions.Dependingonoperatingconditions,unitmighthaveadierentminimumcapacityorcycle.

15

30XAV 500 600 700 800 950 1050 1150

Voltagerange V-ph-Hz 400-3-
50±10%
 24Vviainternaltransformer
 NotApplicable(lessthantheoperatingcurrent)
 -
Maximum*** 0.91-0.93
Cosine phi >0.98
Total harmonic distortion %35-45

Circuit 1†kW 223 255 293 186 231 231 255
Circuit 2†kW - - - 186 186 231 255
Option81 kW - - - 373 417 461 510
 ††
Circuit 1†A 260 306 346 218 264 264 293
Circuit 2†A - - - 218 218 264 293
Option81 A - - - 436 482 528 586

Circuit 1 A 352 400 458 290 362 362 402
Circuit 2 A - - - 290 290 362 402
Option81 A - - - 580 652 724 804

Circuit 1†A373 424 484 304 387 387 430
Circuit 2†A - - - 304 304 387 430
Option81 A - - - 608 691 774 860
* Instantaneousstart-upcurrent
** May vary depending on the intensity ratio of short circuit / maximum intensity transformer installation
*** Valuesobtainedatoperationwithmaximumunitpowerinput.
**** Valuesobtainedatoperationwithmaximumunitpowerinput.Valuesgivenontheunitnameplate.
† When the machines are equipped with two power supplies, circuit 1 is intended to supply the refrigerant circuit A and circuit 2 supplies the refrigerant circuit B
†† ValuesobtainedatstandardEuroventoperatingcondition:Air35°C,water12/7°C.


30XAV 500 600 700 800 950 1050 1150


Circuit 1 kA - 8/37 10/40 7.5/30 13/37 13/37 14/40
Circuit 2 kA - - - 7.5/30 7,5/30 13/37 14/40

Circuit 1 kA 50 - - - - - -

Circuit 1 A - 630 630 400 500 500 630
Circuit 2 A - - - 400 400 500 630

Circuit 1 kA - 50 50 50 50 50 50
Circuit 2 kA - - - 50 50 50 50


Circuit 1 kA* - 50 50 50 50 50 50
Circuit 2 kA* - - - 50 50 50 50
Option81 kA* - - - 50 50 50 50
* TN system (earthing system type)

16

The pumps that are factory-installed in these units comply with the European Ecodesign directive ErP. The additional
electrical data required* is as follows:

   30XAV
500 600
1Nominaleciencyatfullloadandnominalvoltage %89,4 89,4
1Nominaleciencyat75%ratedloadandnominalvoltage %88,9 88,9
1Nominaleciencyat50%ratedloadandnominalvoltage %86,7 86,7
2Eciencylevel -IE3 IE3
3Year of manufacture - This information varies depending on the manufacturer and model
atthetimeofincorporation.Pleaserefertothemotornameplates.
4Manufacturer'snameandtrademark,commercialregistrationnumberandplaceof
manufacturerw
-Sameasabove
5Product'smodelnumber -Sameasabove
6Numberofmotorpoles - 2 2
7-1 Ratedshaftpoweroutputatfullloadandnominalvoltage(400Vw) kW 5,5 5,5
7-2 Maximumpowerinput†(400V) kW 6,15 6,15
8Rated input frequency Hz 50 50
9-1 Rated voltage V 3x400 3x400
9-2 Maximumcurrentdrawn††(400V) A9,7 9,7
10 Rated speed r/s - rpm 49-2930 49-2930
11 Productdisassembly,recyclingordisposalatendoflife -Disassemblyusingstandardtools.Disposalandrecyclingusingan
appropriatecompany.
12 Operatingconditionsforwhichthemotorisspecicallydesigned
I.Altitudesabovesealevel m < 1000****
II.Ambientairtemperature °C <40*(upto50°Cwithreducedwaterow)
III.Maximumairtemperature °C Please refer to the operating conditions given in this manual or in
thespecicconditionsintheCarrierselectionprograms.
IV.Potentiallyexplosiveatmosphere - Non ATEX environment

   30XA
500 600
1Nominaleciencyatfullloadandnominalvoltage %91,3 91,3
1Nominaleciencyat75%ratedloadandnominalvoltage %91,4 91,4
1Nominaleciencyat50%ratedloadandnominalvoltage %90,3 90,3
2Eciencylevel -IE3 IE3
3Year of manufacture - This information varies depending on the manufacturer and model
atthetimeofincorporation.Pleaserefertothemotornameplates.
4Manufacturer'snameandtrademark,commercialregistrationnumberandplaceof
manufacturer
-Sameasabove
5Product'smodelnumber -Sameasabove
6Numberofmotorpoles - 2 2
7-1 Ratedshaftpoweroutputatfullloadandnominalvoltage(400V) kW 11 11
7-2 Maximumpowerinput†(400V) kW 12 12
8Rated input frequency Hz 50 50
9-1 Rated voltage V 3x400 3x400
9-2 Maximumcurrentdrawn††(400V) A18.7 18.7
10 Rated speed r/s - rpm 49-2945 49-2945
11 Productdisassembly,recyclingordisposalatendoflife -Disassemblyusingstandardtools.Disposalandrecyclingusingan
appropriatecompany.
12 Operatingconditionsforwhichthemotorisspecicallydesigned
I.Altitudesabovesealevel m < 1000****
II.Ambientairtemperature °C <40*(upto50°Cwithreducedwaterow)
III.Maximumairtemperature °C Please refer to the operating conditions given in this manual or in
thespecicconditionsintheCarrierselectionprograms.
IV.Potentiallyexplosiveatmosphere - Non ATEX environment
* Requiredbyregulation640/2009withregardtotheapplicationofdirective2009/125/EContheeco-designrequirementsforelectricalmotors
** Itemnumberimposedbyregulation640/2009,annexI2b
*** Descriptiongivenbyregulation640/2009,annexI2b
**** Above1000m,adegradationof3%foreach500mshouldbetakenintoconsideration
† Toobtainthemaximumpowerinputforaunitwithhydronicmodule,addthemaximumunitpowerinputfromtheelctricialdatatabletothepumppowerinput
†† Toobtainthemaximumunitoperatingcurrentdrawforaunitwithhydronicmodule,addthemaximumunitcurrentdrawfromelectricaldatatabletothepumpcurrentdraw

17

 

  MHA 
06TSA186 380V-60Hz 108 142 151 0.91
06TTA266 380V-60Hz 157 199 211 0.92
06TTA301 380V-60Hz 176 223 237 0.92
06TTA356 380V-60Hz 224 270 287 0.92
06TUA483 380V-60Hz 260 360 374 0.92
06TUA554 380V-60Hz 285 395 424 0.92
* Average value for the range (unit at Eurovent conditions)
** Valueatmaximumcapacityandnominalvoltage(380V)
MHAMaximumcompressoroperatingcurrent,limitedbytheunit(currentgivenformaximumcapacityat360V)

 30XAV
500 600 700 800 950 1050 1150
06TSA186 B ——————
06TTA266 A AB — — — — —
06TTA301 ——AB————
06TTA356 — — — AB B — —
06TUA483 — — — — A AB —
06TUA554 ——————AB

• 30XAV0500to0700unitshaveasinglepowerconnectionpointlocatedimmediately
upstreamofthemainswitch(es).Standardunits0800to1150,havetwopower
connectionpointslocatedintheimmediateupstreamofthemainswitches.
• Withtheexceptionofsize0500andtheunitsthatareequippedwith81and70D
options,antishort-circuitsdeviceisnotprovidedasstandard.Itmustbeinstalledatthe
facilityinaccordancewiththeinstructionsgiveninthisdocument.
• Thecompressorandcondenserfanmotorsarecontrolledandprotectedbyvariable
frequencydrivesinstalledonthemachineframe.
• 
-Amaindisconnectswitchfortheentiremachinefor0600and0700sizes.A
disconnectswitchforeachrefrigerationcircuitfor0500and0800to1150sizes.
-All or part of the protection equipment against short-circuits for the circuits inside the
machine
-Switch gear and protection for heaters and hydraulic pumps
-Controldevices.
• 
• Allconnectionstothesystemandtheelectricalinstallationsmustbeinaccordancewith
allapplicablecodes.
• TheCarrier30XVunitsaredesignedandbuilttoensureconformancewiththesecodes.
TherecommendationsofEuropeanstandardEN60204-1(correspondstoIEC
60204-1) (machine safety - electrical machine components - part 1: General
regulations)arespecicallytakenintoaccount,whendesigningtheelectrical
equipment**.
• AppendixBofstandardEN60204-1speciestheelectricalcharacteristicsusedforthe
operationofthemachines.Thosespeciedbelowareappliedto30XAVunitsinaddition
to other information given in this document:
1. Physicalenvironment***;Theclassicationoftheenvironmentisspeciedinstandard
EN60721(equivalenttoIEC60721):
-Outdoor installation
-Ambienttemperaturerange:Minimumtemperature-20°Cupto+48°C.
-Altitude: Lower than or equal to 2000 m
-Presenceofhardsolid:Class4S2(nosignicantdustpresent)
-Presenceofcorrosiveandpollutingsubstances,class4C2(negligible)
2. Powersupplyfrequencyvariation:±2Hz
3. Theneutral(N)linemustnotbeconnecteddirectlytotheunit(ifnecessaryusea
transformer).
4. Overcurrentprotectionofthepowersupplyconductorsisnotprovidedwiththeunit.
5. Thefactoryinstalleddisconnectswitch(es)/circuitbreaker(s)is(are)ofatypesuitable
forpowerinterruptioninaccordancewithEN60947-3(correspondstoIEC60947-3).
6. TheunitsaredesignedforconnectiontoTNnetworks(IEC60364).InITnetworkstheuseof
noiseltersintegratedintothevariablefrequencydrive(s)makesmachineuseunsuitable.In
addition,theshort-circuitholdingcurrentcharacteristicsaremodied.Providealocalearth,
consultcompetentlocalorganisationstocompletetheelectricalinstallation.
7. Electromagneticenvironment:Classicationoftheelectromagneticenvironmentis
describedinstandardEN61800-3(correspondstoIEC61800-3):
-Immunitytoexternalinterferencedenedbythesecondenvironment****
-InterferenceemissionasdenedincategoryC3†
• Theharmoniccurrentsgeneratedbythevariablefrequencydrivesintegratedinthe
30XAVunitareasourceofinterference.Ananalysismayberequiredtoverifyifthese
interferencesexceedthecompatibilitylimitsoftheotherdevicesconnectedtothesame
powersupplynetwork.Thecompatibilitylevelsinsideanelectricalinstallation,thatmust
bemetatthein-plantcouplingpoint(IPC)towhichotherloadsareconnectedare
describedinstandard61000-2-4.
• Two characteristics are required for this analysis:
-The short-circuit ratio (Rsce) of the installation calculated at the in-plant coupling
point(IPC).
-Thetotalharmoniccurrentdistortionrate(THDI),calculatedforthemachineat
maximumcapacity.
• Leakagecurrents:Ifprotectionbymonitoringtheleakagecurrentsisnecessaryto
ensure the safety of the installation, the presence of additional leakage currents
introducedbytheuseofvariablefrequencydrivesintheunitmustbeconsidered.In
particulartheseprotectiondevicesshallbeofreinforcedimmunitytypesandhavea
thresholdnotlowerthan150mA.



* Dependingonthesizeoroptionsselectedforthemachine
** GenerallytherecommendationsofIEC60364areacceptedascompliance
withtherequirementsoftheinstallationdirectives.Conformancewith
EN60204-1isthebestmeansofensuringcompliancewiththeMachinery
Directive.
*** TherequiredprotectionlevelforthisclassisIP43BW(accordingtoreferencedocument
IEC60529).All30XAVunitsareIP44CWandfullthisprotectioncondition.
**** Exampleofinstallationsofthesecondenvironment:Industrialzones,
technical locations supplied from a dedicated transformer
† CategoryC3issuitableforuseinanindustrialenvironmentandisnot
designedforuseinapubliclow-voltagesystemthatsuppliesresidential
locations.Asanoption,conformitywithcategoryC2permitsthistypeof
installation.

18

Please refer to the certied dimensional drawings, supplied
with the unit.

The power supply must conform to the specication on the
chiller nameplate. The supply voltage must be within the
range specied in the electrical data table. For connections
refer to the wiring diagrams and the certied dimensional
drawings.
WARNING: Operation of the chiller with an improper
supply voltage or excessive phase imbalance constitutes
abuse which will invalidate the Carrier warranty. If the
phase imbalance exceeds 2% for voltage, or 10% for current,
contact your local electricity supply at once and ensure that
the chiller is not switched on until corrective measures have
been taken.

100 x max. deviation from average voltage
Average voltage
Example:
On a 400 V - 3 ph - 50 Hz supply,the individual phase voltages
were measured to be:
AB = 406 V; BC = 399; AC = 394 V
Average voltage = (406 + 399 + 394)/3 = 1199/3
= 399.7 say 400 V
Calculate the maximum deviation from the 400 V average:
(AB) = 406 - 400 = 6
(BC) = 400 - 399 = 1
(CA) = 400 - 394 = 6
The maximum deviation from the average is 6 V.The greatest
percentage deviation is: 100 x 6/400 = 1.5 %
This is less than the permissible 2% and therefore acceptable.

Standard:
- 30XAV 0500 to 0700 units have one connection point.
- 30XAV 0800 to 1150 units have two connection points
(one with option 81).

Wire sizing is the responsibility of the installer, and depends
on the characteristics and regulations applicable to each
installation site.The following is only to be used as a guide-line,
and does not make Carrier in any way liable.After wire sizing
has been completed, using the certied dimensional drawing,
the installer must ensure easy connection and dene any
modications necessary on site.
The connections provided as standard for the eld-supplied
power entry cables to the general disconnect/isolator switch
are designed for the number and type of wires, listed in
column 2 of the table on the next page.
The calculations are based on the maximum machine current
(see electrical data tables).
The calculations of favourable and unfavourable cases are
based on the maximum current for each unit (see electrical
data tables). For the design the standardised installation
methods in accordance with IEC 60364 are used: PVC
(70 °C) or XLPE (90 °C) insulated cables with copper core;
arrangement to comply with table 52c of the above standard.
The maximum temperature is 46 °C.The given maximum length
is calculated to limit the voltage drop to 5%.
IMPORTANT: Before connection of the main power cables
(L1 - L2 - L3) on the terminal block, it is imperative to check
the phase rotation of the 3 phases before proceeding to the
connection on then terminal block or the main disconnect/
isolator switch.

The power cables can enter the 30XAV control box from
below or from the unit side:refer to unit drawings. For 30XAV
unit sizes 500 to 1150 the control box that includes the power
supply cable connection terminal is located in the lower part
of the unit. In this case the control box is raised by 120 mm
compared to the lowest point of the chassis.
The cable entry point depends on the unit conguration:
1. Unit raised from the ground (e.g.installation on support
rails): It is recommended to enter the power cables from
below the control box. A removable aluminium plate
below the control box allows introduction of the cables.
2. Unit placed on the ground: For power cable entry from
below the control box ensure that the cable bend radius
is compatible with the connection space available in the
control box. If not, an aluminium plate on the control
box face allows introduction of the cables.
For units with three circuits with option 81 (single power
connection point) the connection must be made from below
the unit.
IMPORTANT: Check the cable bend radius for cable entry
into a control box, located in the lower part of the unit.
Refer to the certied dimensional drawing for the unit.
Motor

19

IMPORTANT: Field connection of interface circuits may
lead to safety risks: Any control box modication must
maintain equipment conformity with local regulations.
Precautions must be taken to prevent accidental electrical
contact between circuits supplied by different sources:
• The routing selection and/or conductor insulation
characteristics must ensure dual electric insulation.
• In case of accidental disconnection, conductor xing
between different conductors and/or in the control box
prevents any contact between the conductor ends and
an active energised part.
Refer to the 30XAV Touch Pilot control manual and the
certied electric wiring diagram provided with the unit for
the eld control wiring of the following features:
• Remote on/off switch
• Demand limit external switch
• Remote dual set point
• Alarm, alert and signals
• Evaporator pump control
• Heat reclaim condenser pump control (option)
• Set point reset via outside air temperature sensor
• Various interlocks on the Energy Management Module
(EMM) board.
Connections to the client communication bus
• The connection to the CCN bus is carried out using
connectors provided for this purpose inside the control
box. Two connectors are provided to allow both
permanent and service connections.
• Permanent connections to an Ethernet bus or to a USB
port are made via the connectors on the touch screen
interface.
A shielding clamp for the cable from the system is provided
near the permanent bus connectors.

After all possible options have been connected, the TC
transformer ensures a power supply reserve of 1 A under 24
Vac that can be used for the on-site control cabling.
As an option, a second TC transformer powers a 230V, 50Hz
circuit can be used for charging a laptop battery (maximum
current 0.8 A). A standard CEE7/17, type E connector is
provided. This circuit is protected by a 10mA earth leakage
detector.
Table of minimum and maximum wire sections (per phase) for connection to 30XAV units
30XAV 


 





  



 


   


500 2x240 1x185 260 XLPE 2x185 450 PVC
600 2x240 1x240 280 XLPE 2x240 480 PVC
700 2x240 1x240 250 XLPE 2x185 350 XLPE
800 2x240/2x240 1x150/1x150 260 XLPE 2x185/2x185 550 PVC
950 2x240 / 2x240 1 x 240 / 1 x 150 240 XLPE 2x185/2x120 380 XLPE
1050 2x240 / 2x240 1 x 240 / 1 x 240 240 XLPE 2x185/2x185 410 XLPE
1150 2x240 / 2x240 2 x 120 / 2 x 120 260 XLPE 2 x2 40 / 2x 240 450 XLPE

800 - 1150 
* Connectioncapacitiesactuallyavailableforeachmachine,denedaccordingtotheconnectionterminalsize,thecontrolboxaccessopeningsizeandtheavailablespaceinsidethecontrolbox.
** Selectionsimultationresultconsideringthehypothesisindicated.
*** IfthemaximumcalculatedsectionisforanXLPEcabletype,thismeansthataselectionbasedonaPVCcabletypecanexceedtheconnectioncapacityactuallyavailable.Specialattentionmust
begiventotheselection.

20



-20
-10
0
10
20
30
40
50
2 4 6 8 10 12 14 16
Leavingevaporatorwatertemperature,(°C)
Enteringairtemperature,(°C)
Partial load > 50%
Partial load < 50%
Full load
   
- Evaporator∆T=5K 
- Theserangesaregivenbywayofindication.VerifytheoperatingrangefromtheCarrier
electroniccatalogue.  

 Operatingrange,standardunit30XAV
 Below0°Cairtemperaturetheunitmusteitherbeequippedwiththeevaporatorfreeze
protectionoption41A,orthewaterloopmustbeprotectedagainstfreezebyusinga
freezeprotectionsolution(bytheinstaller).
 Forstart-upswithairtemperaturebelow-5°C,themachinemustbeequippedwith
option41A.
   
Entering water temperature at start-up - 45**
Leaving water temperature during
operation
6.8 21
Water outlet in operation 3.3* 15
 Theuseofbrineorantifreezeprotectionoptionisrequiredifthewateroutlettemperature
isbelow4°C
 
Storage -20°C 68

Standard unit -20°C*** 50**
Iftheairtemperatureisbelow0°C,aglycol/watersolutionorthefreezeprotectionoption
mustbeused.
* According to the type of installation and air temperature
** Operatingatpartialload.
*** Option41Amandatoryforstart-upsbelow-5°C.


The minimum chilled water ow is shown in the table on the
next page. If the system ow is less than this, the evaporator
ow can be recirculated, as shown in the diagram.

1
2

1 Evaporator
2 Recirculation


The maximum chilled water ow is shown in the table on the
next page. If the system ow exceeds the maximum value, it
can be bypassed as shown in the diagram.

1
2

1 Evaporator
2 Bypas