“IP” RANGE

Use & Maintenance Manual

“IP”series
I N D U S TR I AL W A T E R C H I L L E R

Use & Maintenance

Manual
IPE - IPC
IP

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CONFORMITY

DECLARATION OF CONFORMITY

The Company:
Euroklimat S.p.A.
with registered office in Via Liguria, 8
27010 SIZIANO (PV)

DECLARES
Under ist own responsability

that the INDUSTRIAL WATER CHILLERS of the range “IP” are in conformity with:

- Machinery Directive 98/37/EC.

- Low Voltage Directive 73/23/EC.
- Electromagnetic Compatibilità Directive 89/336/EC.
- Pressure Equipment Directive 97/23/CE - Module H
n°0496
Name: MICHELE
Surname: BEDIN
Position in Company: MANAGING DIRECTOR

Date: March 2006 Signature

DESCRIPTION

The liquid chillers of “IP” range have been made to meet the needs of industrial processes or plants where the production of
chilled water is required.

A variety of models and powers are available to cover a vast range of applications, with inlet water temperatures between
-30° and + 25 °C.

Cold water is produced through a chilling cycle, as shown in the diagram given later in this booklet.

MACHINE CODE IDENTIFICATION

The model of the machine, write on the rating plate (CE), it’s very easy to recognize it by the name (see example).

Name of range
IP E XX 151 / Version
PC heat pump
Air condensing ventilation D tropical (hot clima - over +40°C)
Gold high efficiency (gas R134a)
E axial fan LT low temperature (gas R404a)
C radial fan Size

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CONTENTS

Identification ------------------------------------------------------- page 4

Warranty ------------------------------------------------------- page 4
General reccomendations ------------------------------------------------------- page 4
Basic safety use ------------------------------------------------------- page 5
Qualified operators ------------------------------------------------------- page 6
Specialized maintenance electrician ------------------------------------------------------- page 6
Speciaized maintenance mechanic ------------------------------------------------------- page 6
Refrigeration technician ------------------------------------------------------- page 6
Transport operator ------------------------------------------------------- page 6
Person assigned to switching ON/OFF ------------------------------------------------------- page 6
Safety officer ------------------------------------------------------- page 6
Conditions of use ------------------------------------------------------- page 6
Storage ------------------------------------------------------- page 7
Transportation and handling ------------------------------------------------------- page 7
Example of lifting with a lift truck ------------------------------------------------------- page 7
Example of lifting with ropes ------------------------------------------------------- page 8
Operating spaces ------------------------------------------------------- page 8
Installation ------------------------------------------------------- page 8
Water connections ------------------------------------------------------- page 9
Hydraulic connections dimension ------------------------------------------------------- page 10
Safety valves installation ------------------------------------------------------- page 10
Electrical connections ------------------------------------------------------- page 11
Safety system connections ------------------------------------------------------- page 11
Power supply ------------------------------------------------------- page 11
Check of protective devices and unit ------------------------------------------------------- page 12
Filling the water circuit ------------------------------------------------------- page 12
Starting and use ------------------------------------------------------- page 14
Controls ------------------------------------------------------- page 14
Unit starting ------------------------------------------------------- page 14
Check of cooling ------------------------------------------------------- page 17
Check of safety devices ------------------------------------------------------- page 17
Compressor START/STOP ------------------------------------------------------- page 17
Standby ------------------------------------------------------- page 17
Switching off ------------------------------------------------------- page 17
Control panel ------------------------------------------------------- page 18
Display ------------------------------------------------------- page 18
Remote control panel (optional)\ ------------------------------------------------------- page 19
Set point modification ------------------------------------------------------- page 20
Routine maintenance ------------------------------------------------------- page 22
General safety rules ------------------------------------------------------- page 22
Checking the belt tension (IPC 81…802) ------------------------------------------------------- page 22
Checking the condensing coil ------------------------------------------------------- page 22
Checking the electrical equipment ------------------------------------------------------- page 22
Extraordinary maintenance ------------------------------------------------------- page 23
Adjusting the belt tension (IPC 81…802) ------------------------------------------------------- page 23
Replacing the belt (IPC 81…802) ------------------------------------------------------- page 23
Adjusting the velocity ratio (IPC 81…802) ------------------------------------------------------- page 23
Cleaning the coil ------------------------------------------------------- page 24
Reset of oil press. switch (mod. 251...802) ------------------------------------------------------- page 24
Seasonal stop ------------------------------------------------------- page 24
Seasonal start ------------------------------------------------------- page 24
Troubleshooting ------------------------------------------------------- page 25
List of alarms µchiller² ------------------------------------------------------- page 25
List of warnings µchiller² ------------------------------------------------------- page 25
Programming parameters ------------------------------------------------------- page 31
R407c gas chemical data sheet ------------------------------------------------------- page 44
R404a gas chemical data sheet ------------------------------------------------------- page 47
R134a gas chemical data sheet ------------------------------------------------------- page 50

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IDENTIFICATION

The units may be identified through: Rating plate (CE)

This gives the technical and performance data of the unit and is located on the fittings side of the unit.

It’s advisable to take note of the SERIAL NUMBER of the unit and to conserve it with care.
The serial number is indispensable for spare parts and assistance support.

If the plate has become detached and is missing, request a copy from the Euroklimat S.p.A. Service Department.

WARRANTY

The unit described in this guide is subject to the The supplier shall not be under any liability to
following form of warranty, which is considered as compensate for direct or consequential damage of any
automatically accepted and undersigned by the customer nature or due to any reason whatsoever.
at the time of placing the order with Euroklimat. The warranty is automatically rendered invalid should the
The supplier guarantees the workmanship and good units in respect of which complaint is made have been
quality of the material of the supply, undertaking during repaired or altered in any way whatsoever.
the warranty period specified below to repair or replace, The foregoing warranty and conditions are subject to the
at its discretion, as quickly as possible those parts that buyer’s obligations as to payment having been performed
are shown to the company’s satisfaction to be defective and to compliance by the buyer with contractual
due to faulty materials, construction or workmanship, obligations.
which make them unsuitable for the use for which they No employee, sales representative or After-Sales Service
are designed. The foregoing provided there is no Centre of Euroklimat, or any other person is authorised
negligence by the buyer, damage caused by natural wear to grant any form of exception to the foregoing warranty
and tear, negligence or misuse by the user, damage and conditions.
caused by third parties, force majeure or in any case For further details refer to the terms of the agreement
damage from other causes not attributable to defects in entered into at the time of purchase, which are the only
constructional quality. valid conditions.

GENERAL WARNINGS

Before starting to use the units, the contents of this own qualified technical personnel to provide all the
manual must have been fully read and understood. necessary indications.

This operating and maintenance manual describes To make it easier to identify and recognise the units
the construction, operation and directions for use it is important that the technical data printed on the
and maintenance of the units made by Euroklimat label applied to the exterior of the units and in
S.p.A. particular the serial number are always quoted.

Euroklimat S.p.A. is relieved of all and any liability The unit must not be made to operate other than
for damage or injury due to failure to comply with the under design conditions, even for a short time.
instructions in this manual.
Under no circumstances may parts be inserted that
If in doubt of any kind whatsoever or in need of do not guarantee safety.
explanations, Euroklimat S.p.A. is ready with its

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BASIC SAFETY RULES

The unit must be fitted with an emergency stop by

the installer. The user must check that this has been Some recommendations are given below for the
done before starting the unit. USER, who should avoid abnormal conditions of
use. Any condition of use other than those expressly
The unit is fitted with fixed guards to protect its described in this manual must be avoided.
components. When installed outdoors, a canopy
must be provided to protect the unit from snow,
which could create risks during operation if it freezes
on the fan blades. Respect the indication of the Do not climb onto the unit;
Chapter “Installation”.
Operate with the unit correctly installed in the
Replace any damaged or missing supply lines of the recommended position;
various energy sources.
Operate with the unit correctly installed in the
The refrigerant fluids could are R407c, R134a or recommended position;
R404a depending by the version. They are not
harmful if inhaled. They only become dangerous if Do not start the unit without the fixed guards
they saturate the environment. Under certain correctly mounted;
conditions some fluids are inflammable. See safety
data sheet at the end of the manual for the Do not remove the guards when the unit is in
specifications of each fluid. operation;

The lubricating oil in the compressor is not Do not remove the guards when the unit is powered;
dangerous. Gloves must be worn, however, when
handling it and it should not be swallowed.
Do not clean the unit when it is in operation.
For all work concerned with installation,
commissioning, equipping, use, alterations to the Do not install the unit in corrosive or explosive
conditions of use and working methods, routine environments;
maintenance, inspection and periodic maintenance,
comply with the procedures given in the relative Do not disconnect or remove safety parts or devices;
sections of this manual. The manual must be kept to
hand for ready reference The unit may not be used other than in the
conditions described in this manual.
The unit must be used in the conditions envisaged in
this operating and maintenance manual.

Euroklimat S.p.A. declines every responsibility for eventual damages that can directly or
indirectly derive to persons or things in consequence to the lacked observance the
present instructions.

Any assembly/disassembly carried out by the USER that is not contemplated in this
manual or authorised by “Euroklimat”, will be considered as tampering, thereby
jeopardising the safety functions and invalidating the warranty of the unit.

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QUALIFIED OPERATORS

Only the following professionals may operate the unit after having received all the necessary instructions contained in this
manual:

Specialised maintenance electrician

The electrician must have general experience with Transport operator
switchboards and specific experience with the control The transport operator may only carry out the specific
panel and electrical components of chillers or similar operations indicated in this manual, scrupulously
appliances in the air-conditioning sector. following the relative instructions.
The electrician may only carry out the specific operations
indicated in this manual, scrupulously following the Person assigned to switching on and off
relative instructions. (Ordinary and mechanical operator)
After having read the information in this manual the
Specialised maintenance mechanic ordinary operator may manually operate the unit with
The mechanic must have general experience with regard to the following functions: switching on, switching
mechanics in general and specific experience with off, display of alarms.
chillers or similar appliances in the air-conditioning In any case this operator may only carry out the specific
sector. operations indicated in this manual, scrupulously
The mechanic may only carry out the specific operations following the relative instructions.
indicated in this manual, scrupulously following the
relative instructions. Safety officer
The safety officer is responsible for protection and the
Refrigeration technician prevention of occupational risks as set forth in European
The refrigeration technician must have specific Directive 89/391/EEC (Safety in the workplace).
qualifications from a suitable school for similar appliances The safety officer shall make certain that all the persons
or work under the supervision of instructed personnel. who operate the unit have received all applicable
The refrigeration technician may only carry out the instructions which are contained in this manual, including
specific operations indicated in this manual, scrupulously the initial installation and commissioning operations.
following the relative instructions.

CONDITIONS OF USE

The unit in standard version (gas R407c) has been designed for operation according to the following parameters:

- liquid: water or water + ethylene glycol;

- inlet water temperature range: -5 / +20 °C for standard version; (-25 / +15°C for LT version)

Mixture Mixture
% ethylene glycol % ethylene glycol
temperature temperature
Standard version (R407c – R134a) Low temp. version LT (R404a)
+20 °C - -5 °C 25%
+15 °C - -10 °C 30%
+10 °C 5% (suggested) -15 °C 35%
+5 °C 10% -20 °C 40%
0 °C 15% -25 °C 45%
-5 °C 25% -30 °C 50%

- Range of ammisible temperature: -5 / +40 °C (+45 °C for D version _ tropical)

For all that concerns:

- model;
- power supply;
- load and type of refrigerant;
- weight;
- serial number;

refer to the rating plate positioned on the hydraulic side of the machine.

Under normal conditions the working life of the unit is estimated to be approx. 25.000 hours of operation and in any
case no more than ten years. At the end of this time a general overhaul is recommended to refurbish the unit so
that it may still be used in all safety.

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STORAGE

Store away from:

- Direct sunlight, rain, sand and wind

- Temperature: max.60°C / min. –10°C
- Maximum rel. humidity: 90%

TRANSPORT and HANDLING

The courier is always liable for any damage during Preferably remove the packaging at the actual
transit to the goods that have been entrusted to place of installation.
the same. Before preparing the unit for installation Internal handling must be carried out with the
and commissioning, a thorough visual inspection utmost care, without using unit components as
must therefore be carried out to check that the handholds. To avoid damage it is essential when
packaging is intact and that the unit presents no moving the units that they always remain in the
visible damage nor oil or refrigerant leak. Also position envisaged for their operation.
ensure that the units correspond to the order that
was placed. Do not leave packaged units in places exposed to
strong sunlight, since the internal temperature
Any damage or complaints should be reported to could reach safety device tripping values.
Euroklimat and to the carrier by recorded delivery
letter within 8 days from receiving the goods. The water circuit must be fully drained before
handling the unit in any way whatsoever.
Should one or more components be damaged, do
not proceed with starting up the unit and inform Lifting should preferably be carried out with a lift
Euroklimat of the problem, agreeing with the latter truck. Use a spreader beam if belts or ropes are
the actions to be taken. used for slinging, making sure that there is no
pressure on the upper edges of the units or the
packaging.

Example of lifting with a lift truck:

- Insert protection for the outer structure of the unit, for example a sheet of cardboard or polystyrene (A).

- Make sure that the forks of the lift truck project at least 100 mm (B) from the other side of the unit.

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Example of lifting with ropes:

- Place the lifting pipes like the figure.

- Place rigid structures on the upper edges of the unit so
as to ensure it is not damaged (only in the case of one
- point at which the force acts).
- Tighten the hoisting straps gradually, ensuring that
they are correctly positioned.
- Begin hoisting the unit.

OPERATING SPACES

The customer should check that the strength of the supporting

surface is suitable for the weight of the unit.

It is unnecessary to fix the unit to the floor for correct operation.

If the floor is rough, to ensure a level surface and prevent even
the smallest of vibrations, it is advisable to insert a continuous
rubber sheet the same size as the base supports.
It is also advisable to make sure the unit is level. Should this
be impossible or difficult to accomplish, the unit must not tilt
more than 0.5°.

For a correct operation and for maintenance interventions

respect the free space around the unit (see figure).

INSTALLATION

The units must be installed without obstructing the air intakes.

When installing under a canopy roof, this roof must be at least 3 meters above the top of the unit.

Examples of correct installation are shown in the figures.

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WATER CONNECTIONS

Authorised personnel: Maintenance mechanic

Before carrying out the water connections to the user positions on the water circuit, the installed piping must be flushed
through to eliminate machining residues and in any case to reveal any leaks.

Water drain
This outlet is fitted with a hose connecting tap suitable for
attaching, and securing with a hose clamp, a plastic hose
with an inside diameter of 13 mm. It allows the filling of
the tank connetting it to the water net. During the unfilling
of the inside tank (if present), it allows to drain the water
to the extern.

Air purge
This outlet is fitted with a hose connecting tap suitable for
attaching, and securing with a hose clamp, a plastic hose
with an inside diameter of 13 mm. During the unfilling of
the inside tank (if present), it allows to drain the water to
the extern.

Water outlet
This connection is male and has a diameter that changes
by the size of the unit as for following table. Connect the
outlet pipe of the chilled water to the plant.
The diameter of the pipe must be equal or major of
the diameter of the outlet connection.

Water inlet
This connection is male and has a diameter that changes
by the size of the unit as for following table. Connect the
intlet pipe of the heated water from the plant.
The diameter of the pipe must be equal or major of
the diameter of the outlet connection.

Condensate drain
“IP” chiller has got a special condesate water recipient
positioned under the air condenser; Since the tray
collects rainwater it is not compulsory for the outlet to be
connected to a drain. In any case the water may be
drained off with a plastic hose secured with a hose
clamp, the value of the hose diameter being given in the
table.

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“IP” range Hydraulic connections dimensions

Condensate
Size Water drain Air purge Water outlet Water inlet
drain
M2 – M4
½” ½”
M10 –15 – 20 19 mm

31 – 51 1” 1”
81 – 101 – 121 – 151 1”¼ 1”¼
13 mm 13 mm
201 – 251 1”½ 1”½
301 – 351 – 401 2” 2” 28 mm
502 – 602 3” 3”
702 – 802 4” 4”

Safety valves installation

All the units are fitted with a safety valve on the water side. The purpose of this valve is to drain to the outside through a
pipe. It is therefore advisable to connect the valve to a pipe of at least the same diameter in order to convey any discharge
from the valve to the outside. This pipe must be located so that the discharge can cause no damage to property or injury to
persons. The pipe must also be suitably supported so that it does not weigh on the valve.
The installation must be in conformity with current safety regulations.

If units are not used during the winter, fully drain the water system of all units installed outdoors. If operation is
envisaged also in this period or in any case with low ambient temperatures, antifreeze mixtures must be used.
With indoor installations, drainage is in any case necessary when the room temperature falls to
below 0°C.

For installation diagrams, refer to the examples given in the section “Installation”.
Always fit ball shutoff valves on the water inlet and outlet.
If it is possible that the water may be dirty, also install a “Y” filter on the water inlet.
For more information please contact the After Sales Department of Euroklimat S.p.A..

If the USER needs to disassemble some parts for which the procedure is not given in this manual, it is indispensable to
request permission and the relevant procedure from “Euroklimat”.

Any assembly/disassembly carried out by the USER that is not contemplated in this manual or authorised by “Euroklimat”,
will be considered as tampering, thereby jeopardising the safety functions and invalidating the warranty of the unit.

During construction of the unit all necessary measures are taken to ensure cleanliness in all the parts. After installation,
clean the unit removing the protective substances. Use soft cloths and harmless detergent substances for cleaning, which
do not damage the surfaces.

The unit is always tested and inspected in the factory prior to delivery and requires no further controls.

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ELECTRICAL CONNECTIONS

Safety system connections

Authorised personnel: Maintenance electrician

The unit must be fitted with an emergency stop, which the

installer must put in an easily accessible position. Should
just one activation point be considered insufficient,
several emergency stops in various points may be
installed.

This device is available as an accessory from

Euroklimat.

There is just one version for all models.

Power supply
Authorised personnel: Maintenance electrician

Carry out all the electrical connections, scrupulously

observing the wiring diagrams supplied with the units.
The components onboard the unit are protected by the
equipment inside the switchboard. It is the end user’s
responsibility to ensure the correct size and capacity of
the power supply cable of the unit in relation to the total
input indicated on the wiring diagram and the length of
the same. This cable must also be protected by a safety
device installed on the user’s electrical system.

MONOPHASE 230/1/50 power supply connection (mod. M2 / M4 / M10):

Connect the line to terminal L on the circuit breaker.

Connect the neutral to terminal N. The earth wire (yellow-
green) is connected to a special terminal inside the
electrical panel.

3-PHASE power supply connection

(mod. 15-20-31-51-81-101-121-151-201-251-301-351-
401-502-602-702-802):

Connect the phase wires to the unit's circuit breaker,

respecting the sequence of the phases L1 L2 L3.
The neutral is not needed.
The earth is connected to the special terminal inside the
electrical panel.
The picture to the side shows an example of connection
of the cables.
Power supply from below.

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Check of protective devices and unit operations before switching on

Authorised personnel: Safety officer

Should any abnormality be found when checking The air intake and outlet sides have no
the unit, inform “Euroklimat” and do not operate obstructions of any kind whatsoever that could
the unit. jeopardise efficient operation.

Before switching on for the first time, the unit must The fluid circuit connections present no
be visually inspected, checking that: obstructions such as: clogged filters, closed
manual or automatic shutoff valves, etc.
No electrical wires are loose, especially at
connection points, and that there is no possibility Check that all the fixed guards are mounted and
of doubtful contacts. properly bolted in position and that the mobile
protective elements are closed.
The fluid circuit connections have been carried out
correctly and show no visible leaks or damage.

Filling the water circuit

Authorised personnel: Maintenance mechanic

Before to start up the unit it’s necessary to fill the water circuit

Water / mixture temperature for filling = MAX. 25°C

Filling with water Mod. MICRO2 – MICRO4

Open the tap (A) positioned on the upper part of the unit.
Connect the water drain outlet (B) to the water net.
Opening it the water fills.
The level of the water in the tank is visible through the
indicator on the front of the unit; when the level reach
“MAX” close the water filling from the net.

Warning:

After having filled the plant and after the pump

running, check the water level which it does not
decrease under “MIN” level; in this case it’s
necessary to fill again water using the manual fill
by tap A up to reach “MAX” level.

Warning: in this way the unit runs in “open to close the 2 ball valvs positioned inside the unit close
vessel” mode (circuit without pressure). tho the tank and and to install obsolutely a closed
The unit is designed also for use with “close vessel” expansion vessel and the pressure reducing valve.
mode (circuit with pressure): in this case it’s necessariy

Filling with antifreeze mixture Mod. MICRO2 – MICRO4

If it is necessary to use antifreeze mixtures, filling must be carried out with a solution prepared according to the water
temperature, as specified in the section “Conditions of Use”.

If a ready solution is unavailable, it must be prepared in a container to be connected to the unit water outlet, as described
above.

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Water filling (Mod. M2-M4 excluded)

Warning:

Open the air valve (and connect it to a drainage Once the system has been filled and after having made
well using a plastic hose) so that any air present the pump circulate for some time, check for residual air. If
in the circuit will be discharged during filling, there is still air present, the circuit must be bled and filled
which will consequently be quicker. Take care up with the missing water. With the system inoperative, it
that any water that sprays out when the circuit is also necessary to ensure that the pressure in the circuit
has been filled does not create a hazardous is only just above zero. This indication is visible through
situation. If there are any points in the system the pressure gauge mounted on the unit.
circuit higher than the unit air valve, another air
valve, if possible automatic, must be inserted at
the highest point to ensure complete filling of the
circuit.

Connect the unit water outlet tap to the mains

water system.
Open the mains water supply to fill the circuit.
When water comes out of the hose
connected to the air valve, the circuit has
been filled.

Warning: WHEN THE FILLING IS FINISHED YOU HAVE TO CLOSE THE WATER DRAIN TO AVOID
THAT THE PRESSURE IN THE CIRCUIT INCREASES.
(Not for versions with closed vessel, which is equipped with pressure reducing valve).

Filling with antifreeze mixture

If it is necessary to use antifreeze mixtures, filling must be carried out with a solution prepared according to the water
temperature, as specified in the section “Conditions of Use”.

If a ready solution is unavailable, it must be prepared in a container to be connected to the unit water outlet, as described
above.

Closed or open tank filling kits, as shown in the following diagrams, are available on request by the customer.

For more information please contact the After Sales Department of Euroklimat S.p.A..

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STARTING AND USE

Controls
The professionals involved in this section are:
The Operator, who must always operate with the fixed The Safety officer, who must check that the Operator
guards correctly mounted and check that under no and the Maintenance men have received all the
circumstances have they been tampered with. necessary information as per this manual. He will check
in particular that all the fixed guards have been correctly
The Maintenance men, who must always operate with mounted, are in proper working order and have not been
the unit at a standstill and after having carried out the tampered with.
required operations, check that all the protective devices
are correctly remounted, closed and in proper working
order.

Door interlock.

Microprocessor for unit start and control.

Compressor ON/OFF switch.

Compressor SUMMER/WINTER switch.

(only “heat pump” switch)

Warning:

Check compliance with instructions up to this point. Check that the compressor ON/OFF switch is put to
It is only possible to operate the unit or its parts with off
the front panel closed and the power on/off switch Put the door interlock switch to on
put to on.

Unit starting

- Check the compressor ON/OFF switch is off (position “0”).

- Turn the door interlock in position “1” (ON).

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When switching on for the first time, the oil

must be preheated in the models indicated in the
table. This requirement is also identified on the unit
by the following plate. The procedure is carried out
when starting the unit for the first time and whenever
the unit has been switched off by means of the power
on/off switch for longer than 4 hours. Do not proceed
with other operations until this procedure has been
completed, otherwise the compressors could be
damaged.

Only for models (IPE-IPC):

201 – 251 – 301 – 351 – 502 – 602 – 702 – 802 (with reciprocating semihermetic compressor)

Euroklimat S.p.A. declines every responsibility for eventual damages that can directly or
indirectly derive to persons or things in consequence to the lacked observance the
present instructions.

Put to ON. Working from the microprocessor, press the

button for 5 seconds (for the models with heat pump
press the SUMMER/WINTER switch).

The water pump (if present) starts.

When starting for the first time, check the correct

direction of rotation of the pump. To do this, close the ball
valve fitted at the unit water inlet and outlet, as described
in the paragraph “water connections” in the section
“Commissioning”. Fully open the by-pass. Using the
pressure gauge on the unit check that the circuit is
pressurised. If it is not, switch off the unit using the power
on/off switch and invert the connection phases at the
on/off switch input, paying attention to the possible
presence of current. Then check the working pressure
with the pressure gauge on the unit. Make sure that there
are no automatic valves, which could reduce the flow,
and that the circuit shutoff valves are fully open. Use the
handle of the by-pass valve to adjust the pressure until
the liquid pressure gauge indicator is in the appropriate
sector. This sector is specific for each type of pump
(standard or uprated) and for each model. The table
below indicates the operating range for each
combination.

“IP” pump operating range Standard Pump [bar] Uprated pump [bar]
Size min max min max
MICRO2 – MICRO 4 2,8 4,3 non disponibile
M10 2,8 3,8 4,8 5,9
15 2,9 4,4 4,3 5,9
20 3,0 4,8 4,6 6,2
31 – 51 2,3 3,7 4,6 5,3
81 – 101 – 121 – 151 2,3 3,1 4,5 5,0
201 3,1 3,7 5,4 5,9
251 – 301 – 351 3,3 3,6 5,3 5,8
401 – 502 – 602 – 702 - 802 2,5 3,2 4,3 5,2

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Enable the compressors by putting the relative switch to

position 1 (ON).

Only for “heat pump” version

Select operating mode, SUMMER (cooling) / WINTER
(heating) using the switch.

COOLING mode – all the versions

If the temperature of the water (see value of the display)
is lower than r01 (Summer/cooling set point) value
(default is 7.0°C), the compressor is OFF.
The water pump (if present) runs.

If the temperature of the water (see value of the display)

is higher than r01 + r02 (differential) value (default is
3.0°C), the compressor is ON and the cooling starts and
runs valore di set point r01.

HEATING mode – only “heat pump” version

If the temperature of the water (see value of the display)
is lower than r03 (Winter/heating set point) value
(default is 40.0°C) the compressor is ON and the
heating starts and runs up to reach r03 value. The water
pump (if present) runs.

If the temperature of the water is higher than r03 + r04

(differential) value (default is 3.0°C) the compressor is
OFF.

FOR SET POINT MODIFICATION (r01 and/or r03) SEE CHAPTER “CONTROL PANEL”

In the units with SCROLL compressor, it is Do not persist in operating with reverse rotation or
also necessary to check the direction of rotation of the compressor could be irreparably damaged.
the compressor. An accentuated noise level and
almost total lack of efficiency are signs of reverse
rotation. Two of the compressor power supply
phases must therefore be inverted to obtain the
correct direction of rotation, which is shown by a
clearly lower noise level and correct efficiency.
Having inverted the phases, restart.

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Check of cooling
The chiller normally works with a difference of approx. 5° between the evaporator water inlet and outl et (with by-pass valve
closed), which may be checked with contact thermometers.

Check for any alarm warnings.

Checking the safety devices

The unit, connected as described in the section “Commissioning” under the paragraph “Connection of Safety Devices”, must
guarantee safety functions in an emergency. The emergency stop button must therefore be pressed to check that all the
motors stop. If operation is correct, reset the emergency button and continue with the switching on procedure as described
previously.

Check correct activation of the protective and safety devices (mushroom-head pushbutton).

Compressor START/STOP
This switch is used to cut out compressor operation and Posizione “0”: Compressor off
allow the unit to work with the pump only whenever Position “1”: Compressor on
working conditions so require.
Under normal working conditions compressor starting
and stopping is automatic and is controlled entirely by the
microprocessor.

The unit is equipped with a safety that doesn’t permit more than 1 (one) START/STOP every 3 minutes from the
first.

Standby
- Press button for 5 seconds.

- Press button for 5 seconds

(“heat pump” version).

Since the compressor and the pump are timed and work together, before stopping they finish the cycle in progress.
A certain interval may therefore be necessary before the unit comes to a total stop. In this condition the unit is in
stand-by and may be restarted by just pressing the button for 5 seconds.

S During stand-by preheating of the oil for models from 201 to 802 is unnecessary.

Switching off
This operation should always be carried out after having
put the unit in stand-by and after all the components have
come to a stop.

Put the door interlock switch to OFF.

If the unit has been at a standstill for more than 4 hours, before restarting the oil must be preheated where
indicated (or size 201 – 251 – 301 – 351 – 401 – 502 – 602 – 702 – 802).

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CONTROL PANEL

2
“IP” water chillers are fitted with a compact electronic control (µchiller ), having the size of a normal thermostat, for complete
control of the unit; The device has:

Meaning Reference
Symbol Colour refrigerant
with LED on with LED flashing
circuit
1;2 Amber Compressor 1 and/or 2 ON Start up request 1

3;4 Amber Compressor 3 and/or 4 ON Start up request 2

Amber At least one compressor ON - 1/2

Amber Pump ON (if present) Start up request 1/2

Amber Not used - 1/2
Amber Defrost ON (only “heat pump”) Defrost request (only “heat pump”) 1/2

Amber Heater ON (if present) - 1/2

Red Alarm active - 1/2

Heating mode Heating mode request
Amber 1/2
(only “heat pump”) (only “heat pump”)
Amber Cooling mode (chiller) Cooling mode request (chiller) 1/2

Main functions
- water temperature control Controlled devices
- complete alarm management - compressor
- set-up for serial line for supervision/remote - condensing fans
servicing - water circulating pump
- a connectable external terminal (optional) - safety and timing devices, alarms
- self-diagnosis

Display
The 3-digit display automatically shows the decimal point between -19.9 and +19.9 °C. Outside this ran ge the value is
automatically displayed without the decimal point (although the unit always operates inside considering the decimal part). In
the normal operating mode the displayed value corresponds to the temperature read by the sensor.
In the event of alarm, the sensor value is displayed alternately with the codes of the active alarms. During programming the
parameter codes and their value appear on the display.
The visualization and the configuration of the unit is possible also using a remote control panel (available on request).

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Remote control panel (available on request)

The remote control panel (available on request) is an

electronic device that allows the remote control of the
unit.

The functions allowed are the same as those available on

2
the display and the local keypad of the µChiller installed
on the unit.

The connection between the remote control panel and

the unit is possible using a pin-to-pin phone cable (max.
length = 40 meters).

For more longer applications please contact the

Euroklimat S.p.A. Customer Service.

There are 2 versions of the remote control panel (available on request):

- version for panel installation
- version for wall-mounting installation

Panel installation
This version has been designed for panel installation,
with the drilling template measuring 127 x 69 mm with 2
circular holes, diameter 4 mm, as shown in figure.
For installation proceed as follows:

- connect the telephone cable;

- insert the terminal, without the front frame, in the
opening, and use the countersunk screws to
fasten the device to the panel;
- finally, apply the click-on frame.

Version for wall-mounting installation

The version of the terminal for wall-mounting requires the
rear of the case A to be fastened (see figure) using a
standard 3-module switch box.
- fasten the rear of the case to the box using the
round-head screws;
- connect the telephone cable;
- rest the front panel on the rear of the case and
fasten the assembly using the countersunk
screws, as shown in figure;
- finally, apply the click-on frame.

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To install the remote terminal, no configuration is required

2
on the µChiller .

When first switched on the display will show the firmware

2
version of the µChiller .

After around 4 s the main screen will be displayed,

with the symbols that represent
2
the status of the µChiller .

Now it’s possible to obtain all the functions managed by

the control installed on board of the chiller unit.

Set point modification (outlet water temperature) in COOLING mode ( all the versions)
The manufacturer set point setting is 7.0°C ; the range of possible values is +5 / +25°C for standard version, -30, / +20°C for
LT version (low temperature).

Normal condition:
When starting or during the operation, the display shows
the water temperature (es.: 14,0°C).

Press SEL button for 5 seconds

The display shows - / -

Press button for 2 times

The display shows –r–

Press SEL button

The display shows r01

Press SEL button

The display shows the actual value of set point (7.0°C)

Press button the increase the value;

Press button to decrease the value.

The display shows the new value (es.: 12.5°C)

Press SEL button

Press PRG button for 3 times to save the new value

and to come back to the standard visualization (water
outlet temperature)

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Set point modification (outlet water temperature) in HEATING mode (only “heat pump”)
The manufacturer set point setting is 40.0°C ; the range of possible values is +30 / +50°C

Normal condition:
When starting or during the operation, the display shows
the water temperature (es.: 40,0°C).

Press SEL button for 5 seconds

The display shows - / -

Press button for 2 times

The display shows –r–

Press SEL button

The display shows r01

Press button for 2 times

The display shows r03

Press SEL button

The display shows the actual value of set point (40.0°C)

Press button the increase the value;

Press button to decrease the value.

The display shows the new value (es.: 42.5°C)

Press SEL button

Press PRG button for 3 times to save the new value

and to come back to the standard visualization (water
outlet temperature)

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ROUTINE MAINTENANCE

General safety rules

Before carrying out inspections, maintenance and For operations not contemplated in this manual, contact
controls, scrupulously comply with all that is specified Euroklimat.
below: For constant efficiency and a long working life of the unit,
- check that the power on/off switch is put to off it must be periodically controlled and maintained. A
(position ‘0’) and padlocked in that position; thorough visual inspection of the equipment and general
- check that there are no moving parts; cleaning are always of the utmost importance for trouble-
- observe the accident-prevention regulations in free operation.
force;
- put on adequate personal protective equipment Relatively simple, inexpensive operations and checks fall
(gloves, goggles, etc.) before carrying out any within this category of work, which on the one hand
operation. ensures good operation over a period of time and on the
other allows possible faults to be forestalled that, if
Except for visual inspections, all the operations are to be neglected, could become considerably problematic
carried out solely by specialised and expert personnel,
otherwise the warranty is rendered invalid.
- once the unit has stopped, open the upper front
Checking the belt tension (IPC mod. 81 802) panel;
- press on the drive belt with fingers in the points
Authorised personnel: maintenance mechanic
indicated in the figure.
Frequency: once a month
Checks: after a certain number of hours of operation
- check the centrifugal fan belt tension. It could
have slackened and therefore start to slip on the
pulleys.
Should such a situation persist, it would cause
overheating with consequent wear and breaking of the
belt.
Belt tension is acceptable when the belt can be pushed
down, in the halfway point between the two pulleys, by
approx. 20mm.
For the check, proceed as follows:
- switch off the unit by putting the switch to ‘0’ and
padlock it in that position;
- check that there are no moving parts;

Checking the condensing coil

Authorised personnel: maintenance mechanic
Frequency: once a month
Checks:
- visually check from outside the unit if there is any dirt, such as paper, dry leaves or simply dust, on the coil. The
presence of such deposits causes a reduction in the air flow with a consequent reduction of efficiency and the
possibility that the high pressure switch could trip resulting in the unit stopping.

Checking the electrical equipment

Authorised personnel: maintenance electrician
Frequency: once a month
Checks:
- check the wiring to ensure that there are no loose wires at connection points and no possibility of doubtful contacts.
For the check, proceed as follows:
- switch off the unit by putting the switch to ‘0’;
- check that there are no moving parts;
- once the unit has stopped, open the electrical panel;
- gently tug the wires of the contacts to check that the wiring up is secure;
- if necessary tighten the screws using a screwdriver.

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EXTRAORDINARY MAINTENANCE

Adjusting the belt tension (IPC mod. 81 802)

Authorised personnel: maintenance mechanic.
Frequency: after checking the correct tension if necessary.
Work:
- switch off the unit by putting the switch to ‘0’ and padlock it in that position;
- once the unit, including all its parts, has stopped, remove the upper front panel;
- the motor is mounted on a belt-tightening slide with an adjusting screw in the centre, which may be adjusted using
a hexagon wrench as shown in the figure. The slide may thus be moved until the belt is taut;
- replace the panel;
- restart the unit, following the starting procedure.

Replacing the belt (IPC mod. 81 802)

Authorised personnel: maintenance mechanic.
Frequency: after checking the correct tension if necessary.
Work:
- switch off the unit by putting the switch to ‘0’ and padlock it in that position;
- once the unit, including all its parts, has stopped, remove the upper front panel;
- remove the broken belt and any fragments of the same;
- the motor is mounted on a belt-tightening slide with an adjusting screw in the centre, which may be adjusted using
a hexagon wrench as shown in the figure. The slide may thus be moved until the new belt can be inserted;
- once the new belt has been mounted, adjust as described above;
- replace the panel;
- restart the unit, following the starting procedure.

Adjusting the velocity ratio (IPC mod. 81 802)

Authorised personnel: maintenance mechanic.
Frequency: if a change in the air flow is required.
Work:
- this adjustment allows the air flow of the fan to
be changed by approx. 10 % more or less using
the variable pitch pulley of the motor.
Procedure:
- switch off the unit by putting the switch to ‘0’ and
padlock it in that position;
- once the unit, including all its parts, has
stopped, remove the upper front panel;
- using a hexagon wrench, loosen the belt
adjusting screw in order to free the pulleys;
- loosen the security dowel located on the mobile
part of the pulley;
- loosen (decrease of pitch diameter and increase
of flow rate) or tighten (increase of pitch
diameter and decrease of flow rate) the mobile
part of the pulley;
- upon completion of adjustment, tighten the
security dowel on the mobile part;
- replace the belt and adjust the belt tension;
- check alignment of the pulleys;
- replace the panel;
- restart the unit, following the starting procedure.

If the fan thermal cut out trips with the unit closed, this is
a sign of absorption in excess of the rating plate value.
Reset the conditions prior to adjustment or create a
resistance on the fan delivery to bring the absorption
values to below the rating plate value.

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Cleaning the coil

Authorised personnel: maintenance mechanic.
Frequency: after visual inspection if necessary and at least once a year.
Work:
- switch off the unit by putting the on/off switch to ‘0’ and padlock it in that position;
- once the unit, including all its parts, has stopped, remove the perforated protective panel from the coil;
- clean the fins using a bristle (not wire) brush, proceeding vertically in the direction of the fins and taking care not to
exert too much pressure, which could otherwise damage the fins. In the event of stubborn dirt, use detergent
products or compressed air, blowing the latter in the reverse direction to the normal airflow;
- replace the panel;
restart the unit, following the starting procedure.

Reset of the oil pressure switch differential (mod. 201 802)

Authorised personnel: maintenance mechanic.
Frequency: in case of alarm C1 only (see alarms table).
Work:
- switch off the unit by putting the switch to ‘0’;
- once the unit, including all its parts, has stopped, remove the lower front panel;
- reset the pressure switch by pressing the key to be found on the actual switch, as shown in the figure to the side;
- replace the panel;
- restart the unit, following the starting procedure.

Seasonal stop
Authorised personnel: maintenance mechanic and electrician.
Frequency: once a year.
Procedure:
- close the water circuit water supply valve;
- if the system risks being exposed to freezing temperatures during the period of inactivity, fully drain the water
circuit;
- disconnect from the electricity supply by means of the power on/off switch, ensuring that the switch cannot be put
to “on” again during the period of inactivity of the system.

Seasonal start
Authorised personnel: maintenance mechanic and electrician.
Frequency: once a year.
Procedure:
- open the water supply tap;
- if the system has been drained, refill the water circuit;
- Carry out all checks and procedures as with the first time of starting.

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TROUBLESHOOTING

Authorised personnel: maintenance mechanic, electrician and refrigeration technician.

In the event of unit malfunction, the display starts to blink

and the buzzer activates.

The alarm identification code appears on the display for a

few seconds, while the buzzer continues.

Press the PRG key to mute the buzzer. The display

continues to blink and the alarms are not reset.

Remove the causes that have generated the

alarm.

Press the keys and simultaneously for a few

seconds to reset.

The display stops blinking and the normal screen display

returns.

List of ALARMS µchiller2

“IP” range Action
ALARM code Description Reset
Size Compress. Fan Pump
HP1 High pressure alarm (circuit 1) all manual OFF OFF -
HP2 High pressure alarm (circuit 2) 502 802 manual OFF OFF -
manual
LP1 Low pressure alarm (circuit 1) M2 401 OFF OFF -
M2-M4: auto
manual
LP2 Low pressure alarm (circuit 2) 502 802 OFF OFF -
M2-M4: auto
tP General overload alarm M2 401 manual OFF OFF OFF
tC1 Circuit 1 overload alarm 502 802 manual OFF OFF OFF
tC2 Circuit 2 overload alarm 502 802 manual OFF OFF OFF
FL Water flow alarm all manual OFF OFF OFF
E1 E8 E1÷ E8 probe alarm all automat. OFF OFF OFF
EPr EEPROM error during operation all automat. - - -
EPb EEPROM error at the start-up all automat. OFF OFF OFF
ESP Expansion error 502 802 automat. OFF OFF OFF
A1 Antifreeze alarm all manual OFF OFF -

List of WARNING µchiller2

“IP” range Action
ALARM code Description Reset
Size Compress. Fan Pump
Ht High temperature plant warning tutte manual - - -
Lt Low temperature plant warning tutte manual - - -
AHt High temp. plant at the start-up tutte manual - - -
ALt Low temp. plant at the start-up tutte manual - - -
ELS Low supply voltage tutte automat. - - -
ELH High supply voltage tutte automat. - - -
Defrost circuit 1 M2 401 - - - -
D1
“heat pump”

Defrost circuit 2 502 802 - - - -

D2
“heat pump”

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High pressure alarm Description:

HP1 (circuit 1) The alarm leads to the immediate stopping of the compressor and the
HP2 (circuit 2) fan, activation of the buzzer and the alarm relay, and blinking of the
display.

CAUSE CHECK AUTHORIZED PERSONNEL

Check for obstructions near or on the air intake and

outlet.
Airflow rate too low. Maintenance mechanic.
Check the condensing coil for fouling.

Measure the inlet air temperature and compare it with

design values.
(ver. ST= standard
max. +40°C)
Air inlet temperature too high. Refrigeration technician.
(ver. /D= tropical
max. +45°C)

Eliminate any recirculation of expelled air.

Check that the condensation control systems are in

proper working order.

Check the fan motor and the electrical circuit for breaks
or faults. Replace the defective piece. Maintenance mechanic.
Condensing fans do not start.
Maintenance electrician.
Check if the fan thermal cutout has tripped and if
necessary check its absorption.

Check the direction of rotation of the fans.

Refrigerant circuit too full. Check and bring it to within the recommended limits. Refrigeration technician.

Check correct operation of its contact; check the

Faulty high pressure switch operation. connecting capillary for obstruction or crushing and if Refrigeration technician.
necessary replace.

Compressor delivery valve partially

Check its state and if necessary open the valve. Refrigeration technician.
closed.

Check the motor winding and the charge level. Replace

if necessary.

Check that the winding resistance is correct and there is

no short circuit. Replace the compressor if necessary.

The compressor is mechanically jammed or has

gripped. Replace the compressor.
Compressor thermal cutout trips due to Maintenance mechanic.
motor overheating. Absorption is too high. Check operating conditions Maintenance electrician.
(water and expansion tank temperatures, condensation,
overheating, supercooling, etc.).

The motor is operating with single-phase instead of

three-phase power supply. Check the power supply
voltage and correct electrical connection.

Check continuity of the single windings.

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Low pressure alarm Description:

LP1 (circuit 1) The alarm is detected with the compressor on or off and leads to the
LP2 (circuit 2) immediate stopping of the compressor or its non-start. The buzzer and
the alarm relay activate and the display blinks.

CAUSE CHECK AUTHORIZED PERSONNEL

Check the water circuit for closed valves, obstructed

filters or obstructions of any kind.
No water. Refrigeration technician.
Check the pump for the direction of rotation and correct
operation.

Check the sensitive bulb and its capillary for leaks and if
it is therefore empty. Check the external equaliser for
Faulty thermostatic valve. Refrigeration technician.
obstruction or crushing and that overheating is within
correct values. Replace if necessary.

Check the overheating values and re-calibrate if

Thermostat valve out of calibration. Refrigeration technician.
necessary.

Condensation pressure too low. Check operation of the condensation control systems. Refrigeration technician.

Search for any gas leaks. Repair and restore correct

No gas in refrigerant circuit. Refrigeration technician.
gas load.

Obstructed filter on liquid line. Replace the filter. Refrigeration technician.

Check correct operation of its contact; check the

Faulty low pressure switch operation. connecting capillary for obstruction or crushing and if Refrigeration technician.
necessary replace.

Overload alarm Description:

tP (general) The alarm leads to the immediate stopping of the compressor and the
tC1 – tC2 (circuit 1-2) fan, activation of the buzzer and the alarm relay, and blinking of the
display.

CAUSE CHECK AUTHORIZED PERSONNEL

Test the winding resistance of the motor and if abnormal

replace the compressor.

The compressor is mechanically jammed or has

gripped. Replace the compressor.

Intervention of the magnetothermal The absorption is too high. Check operating conditions
Maintenance electrician.
protection of the compressor. (water temperature, evaporating pressure, condensing
pressure, superheating, subcooling, etc…).

Check the power supply voltage and correct electrical

connection.

Check the continuity of the single windings.

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Flow switch alarm Description:

Pump thermal cut-out The alarm is detected irrespective of the pump and compressor status.
FL The compressor, pump and fan stop, while the buzzer and alarm relay
activate and the display blinks.

CAUSE CHECK AUTHORIZED PERSONNEL

Check the water circuit for any closed valves, obstructed

filters or obstructions of any kind.
No water. Refrigeration technician.
Check the pump for the direction of rotation and correct
operation.

Test the winding resistance and if abnormal replace the

pump.
Pump winding short-circuited. Maintenance electrician.
The pump is mechanically jammed or has gripped.
Replace the pump.

Check operating conditions in terms of flow rate and

Pump current absorption too high. delivery pressure. If necessary re-calibrate pump Maintenance electrician.
operation using the by-pass valve.

Pump motor operating with single- Check the power supply voltage and correct electrical
phase instead of three-phase power connection.
Maintenance electrician.
supply.
(ver. MICRO2 – MICRO4 excluded) Check the continuity of the single windings.

Incorrect calibration of flow switch or Check instrument calibration and operation and replace
Refrigeration technician.
mechanical failure. if necessary.

Description:

Probe alarm These alarms are also detected with the unit in stand-by. The values read
E1 …. E8 by a sensor are outside normal values. The presence of a sensor alarm
leads to deactivation of the compressor, the condensing fans and the
pump. The buzzer and alarm relay activate and the display blinks.

CAUSE CHECK AUTHORIZED PERSONNEL

Check the wiring between the sensor and the

Probe damaged or fault. Maintenance electrician.
microprocessor for breaks or faults.

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Description:
EEPROM error
during operation The microprocessor continues to perform the control of the unit with the
EPr data present in the random memory (RAM). After the first power supply
failure the configuration will be lost.

CAUSE CHECK AUTHORIZED PERSONNEL

Turn OFF the unit. Wait for some seconds.

Microprocessor error. Turn ON the unit. If after the autocontrol the alarm will Maintenance electrician.
be shows again, replace the regulator.

EEPROM error Description:

at the start-up 2
At the start-up of the µchiller it blocks and the diciture appears on the
EPb display.

CAUSE CHECK AUTHORIZED PERSONNEL

Turn OFF the unit. Wait for some seconds.

Microprocessor error. Turn ON the unit. If the alarm will be shows again, Maintenance electrician.
replace the regulator.

Communication error with Description:

expansion card 2
If the control µchiller loses communication with the expansion card, the
ESP
entire system will be stopped to avoid affecting the unit. The alarm leads
to the immediate stopping of the compressor and the fan, activation of the
(mod. 502 – 602 – 702 – 802) buzzer and the alarm relay, and blinking of the display.

CAUSE CHECK AUTHORIZED PERSONNEL

Turn OFF the unit. Wait for some seconds.

Communication data error. Turn ON the unit. If the alarm will be shows again, Maintenance electrician.
contact Euroklimat SpA.

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Descrption:

Antifreeze alarm The alarm is detected through the water sensor in the tank when the
A1 evaporator outlet water temperature is below the set antifreeze threshold.
The compressor and the condensing fans stop immediately, the buzzer
and the alarm relay activate and the display blinks.

CAUSE CHECK AUTHORIZED PERSONNEL

Check the water circuit for closed valves, obstructed

filters or obstructions of any kind.
No water. Refrigeration technician.
Check the pump for the direction of rotation and correct
operation.

Water temperature too low. Check operating set point calibration. Refrigeration technician.

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display

default
PROBE setting parameters (/) range Models “IP” range – all the versions

Parameter description MIN MAX M2 - M4 M10...201 251…401 501…602 702 - 802 custom
Probe type B1
/01 0 1 1 1 1 1 1 1
0= not present 1= present

Probe type B2
/02 0 1 0 1 1 1 1 1
0= not present 1= present

Probe type B3
0= not present 1= NTC cond. probe /03 0 2 0 0 0 0 0 0
2=NTC ext. probe.
Probe type B4
/04 0 3 0 0 0 0 0 0
0= not present 1= present
Probe type B5
/05 0 1 0 0 0 0 0 0
0= not present 1= present
Probe type B6
/06 0 1 0 0 0 0 0 0
0= not present 1= present
Probe type B7
/07 0 2 0 0 0 0 0 0
0= not present 1= present
Probe type B8 (expansion)
0= not present 1= ON/OFF /08 0 3 0 0 0 0 0 0
2= NTC ext. probe 3= ratiometric probe cond. 5Vdc
Minimum value voltage input /09 0 /10 50 50 50 50 50 50
Maximum value voltage input /10 /09 500 450 450 450 450 450 450
Pressure min. value /11 0 /12 0 0 0 0 0 0
Pressure max. value /12 /11 99.9 34.5 34.5 34.5 34.5 34.5 34.5
Probe B1 calibration /13 -12.0 12.0 0.0 0.0 0.0 0.0 0.0 0.0
Probe B2 calibration /14 -12.0 12.0 0.0 0.0 0.0 0.0 0.0 0.0
Probe B3 calibration /15 -12.0 12.0 0.0 0.0 0.0 0.0 0.0 0.0
Probe B4 calibration /16 -12.0 12.0 0.0 0.0 0.0 0.0 0.0 0.0
Probe B5 calibration /17 -12.0 12.0 0.0 0.0 0.0 0.0 0.0 0.0
Probe B6 calibration /18 -12.0 12.0 0.0 0.0 0.0 0.0 0.0 0.0
Probe B7 calibration /19 -12.0 12.0 0.0 0.0 0.0 0.0 0.0 0.0
Probe B8 calibration /20 -12.0 12.0 0.0 0.0 0.0 0.0 0.0 0.0
Digital filter /21 1 15 4 4 4 4 4 4
Input limitatio /22 1 15 8 8 8 8 8 8
Unit of measure 0=°C 1=°F /23 0 1 0 0 0 0 0 0

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ANTIFREEZE/AUXILIARY HEATER

display

default
range Models “IP” range – all the versions
setting parameters (A)
Parameter description MIN MAX M2 - M4 M10...201 251…401 501…602 702 - 802 custom

3.0 3.0 3.0 3.0

Antifreeze A01 A07 A04 3.0 3.0 (-32.0) (-32.0) (-32.0) (-32.0)
ver. LT ver. LT ver. LT ver. LT

Differential for antifreeze/low ambient temperature alarm A02 0.3 122.0 5.0 4.0 4.0 4.0 4.0 4.0

Bypass time for antifreeze alarm/low ambient temp. when

A03 0 150 0 0 0 0 0 0
turning on the unit in heating mode

5.0 5.0 5.0 5.0

Set point for the activation of antifreeze heater A04 A01 r16 5.0 5.0 (-30.0) (-30.0) (-30.0) (-30.0)
ver. LT ver. LT ver. LT ver. LT

Differential for antifreeze heater A05 0.3 50.0 1.0 1.0 1.0 1.0 1.0 1.0

Auxiliary heater probe

A06 0 1 0 0 0 0 0 0
0= control probe 1= antifreeze probe

Antifreeze alarm set point limit A07 -40.0 176.0 -40.0 -40.0 -40.0 -40.0 -40.0 -40.0

Auxiliary heater set point in heating mode A08 A01 r15 25.0 25.0 25.0 25.0 25.0 25.0

Auxiliary heater differential in heating mode A09 0.3 50.0 3.0 3.0 3.0 3.0 3.0 3.0

Antifreeze automatic start up

0= disabled function
1= heaters and pump on at the same time on A4/A8 A10 0 3 0 0 0 0 0 0
2= heaters and pump on indipendently on A4/A8
3= heaters ON on A4/A8

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PROBE reading parameter (b) range Models “IP” range – all the versions

Parameter description MIN MAX M2 - M4 M10...201 251…401 501…602 702 - 802 custom

Config. of probe to be shown on the display

0= probe B1 1= probe B2
2= probe B3 4= probe B4
5= probe B5 6= probe B6
b00 0 10 0 0 0 0 0 0
7= probe B7 8= probe B8
8= set point without compensation
9= set point (dinamic) with possible compensation
10= remote ON/OFF digital input status

Value read by probe B1 b01 - - - - - - - -

Value read by probe B2 b02 - - - - - - - -
Value read by probe B3 b03 - - - - - - - -
Value read by probe B4 b04 - - - - - - - -
Value read by probe B5 b05 - - - - - - - -
Value read by probe B6 b06 - - - - - - - -
Value read by probe B7 b07 - - - - - - - -
Value read by probe B8 b08 - - - - - - - -
Driver 1 evaporator temperature b09 - - - - - - - -
Driver 1 evaporator pressure b10 - - - - - - - -
Driver 1 superheating b11 - - - - - - - -
Driver1 saturation temperature b12 - - - - - - - -
Driver 1 valve position b13 0 100.0 - - - - - -
Driver 2 evaporator temperature b14 - - - - - - - -
Driver 2 evaporator pressure b15 - - - - - - - -
Driver 2 superheating b16 - - - - - - - -
Driver 2 saturation temperature b17 - - - - - - - -
Driver 2 valve position b18 0 100.0 - - - - - -
Temp. probe at the outlet of the external coil C1 b19 - - - - - - - -
Temp. probe at the outlet of the external coil C2 b20 - - - - - - - -

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COMPRESSOR setting parameter (c) range Models “IP” range – all the versions

Parameter description MIN MAX M2 - M4 M10...201 251…401 501…602 702 - 802 custom

Min. compressor ON time c01 0 999 60 120 120 120 120 120

Min. OFF time compressor c02 0 999 60 240 240 240 240 240

Delay between 2 starts of the same compressor c03 0 999 360 360 360 360 360 360

Delay between starts of the 2 compressors c04 0 999 10 - - - 30 30

Delay between 2 shut-downs of the 2 compressors c05 0 999 0 - - - 30 30

Delay at start-up c06 0 999 0 0 0 0 0 0

Delay in switching ON the compressor after switching OFF

c07 0 150 20 20 20 20 20 20
the pump

Delay in switching OFF the compressor after switching OFF

c08 0 150 1 1 1 1 1 1
the pump

Max. compressor operating time in tandem c09 0 60 0 0 0 0 0 0

Compressor 1 timer c10 0 800.0 0 0 0 0 0 0

Compressor 2 timer c11 0 800.0 0 - - -

Compressor 3 timer c12 0 800.0 0 - - - - -

Compressor 4 timer c13 0 800.0 0 - - - - -

Operation timer threshold c14 0 100 0 0 0 0 0 0

Hour counter evaporator pump c15 0 800.0 0 0 0 0 0 0

Hour counter condenser backup pump c16 0 800.0 0 0 0 0 0 0

Min. time between 2 pump starts c17 0 150 30 30 30 30 30 30

Min. pump ON time c18 0 15 3 3 3 3 3 3

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DEFROST setting parameters (d) range Models “IP” range – all the versions

Parameter description MIN MAX M2 - M4 M10...201 251…401 501…602 702 - 802 custom

Defrosting cycle/Condenser antifreeze

d01 0 1 0 0 0 0 0 0
0= no 1= yes, with shared defrosting

Defrost type
0= time 1= temperature + pressure d02 0 2 0 - - - - -
2= start in presssure, end in temperature
Start defrosting temperature -40.0 d04 -5.0
Condenser antifreeze alarm set point d03 - - - - -
Start defrosting pressure /11 d04 3.5
End defrosting temperature d03 176.0 20.0
End defrosting pressure
d04
d03 /12 14.0
- - - - -

Min. time to start a defrosting cycle d05 10 150 10 - - - - -

Min. duration of a defrosting cycle d06 0 150 0 - - - - -
Max. duration of a defrosting cycle d07 1 150 5 - - - - -
Delay between 2 defrosting cycle requests within the same
circuit
d08 10 150 30 - - - - -

Defrosting delay between the 2 circuits d09 0 150 10 - - - - -

Defrost by external contact
0= disables function 1= external contact start
2= external contact end
d10 0 3 0 - - - - -
3= external contact start and end
Antifreeze heaters activated while defrosting
0= not present 1= present
d11 0 1 0 - - - - -

Waiting time before defrosting d12 0 3 0 - - - - -

Waiting time after defrosting d13 0 3 0 - - - - -
End defrosting with 2 refrigerating circuits
0= indipendent
1= if both at end defrost
d14 0 2 0 - - - - -
2= if at least one at end defrost
Start defrosting with 2 refrigerating circuits
0= indipendent
1= if both at end defrost
d15 0 2 0 - - - - -
2= if at least one at end defrost
Forced ventilation time at the end of the defrosting d16 0 360 0 - - - - -
Defrost with compressor OFF d17 0 80.0 0 - - - - -

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DEFROST setting parameters (d) range Models “IP” range – only versions “heat pump” IP*/PC

Parameters description MIN MAX M2 - M4 M10...201 251…401 501…602 702 - 802 custom

Defrosting cycle/Condenser antifreeze

d01 0 1 0 1 1 1 1 1
0= no 1= yes, with shared defrosting
Defrost type
0= time 1= temperature + pressure d02 0 2 0 0 0 0 0 0
2= start in presssure, end in temperature
Start defrosting temperature -40.0 d04 -5.0 -5.0 -5.0 -5.0 -5.0 -5.0
Condenser antifreeze alarm set point d03
Start defrosting pressure /11 d04 3.5 3.5 3.5 3.5 3.5 3.5
End defrosting temperature d03 176.0 20.0 20.0 20.0 20.0 20.0 20.0
d04
End defrosting pressure d03 /12 14.0 14.0 14.0 14.0 14.0 14.0
Min. time to start a defrosting cycle d05 10 150 10 10 10 10 10 10
Min. duration of a defrosting cycle d06 0 150 0 0 0 0 0 0
Max. duration of a defrosting cycle d07 1 150 5 5 5 5 5 5
Delay between 2 defrosting cycle requests within the same
d08 10 150 30 30 30 30 30 30
circuit
Defrosting delay between the 2 circuits d09 0 150 10 10 10 10 10 10
Defrost by external contact
0= disables function 1= external contact start
d10 0 3 0 0 0 0 0 0
2= external contact end
3= external contact start and end

Antifreeze heaters activated while defrosting

d11 0 1 0 0 0 0 0 0
0= not present 1= present
Waiting time before defrosting d12 0 3 0 0 0 0 0 0
Waiting time after defrosting d13 0 3 0 0 0 0 0 0
End defrosting with 2 refrigerating circuits
0= indipendent
d14 0 2 0 0 0 0 0 0
1= if both at end defrost
2= if at least one at end defrost
Start defrosting with 2 refrigerating circuits
0= indipendent
d15 0 2 0 0 0 0 0 0
1= if both at end defrost
2= if at least one at end defrost
Forced ventilation time at the end of the defrosting d16 0 360 0 0 0 0 0 0
Defrost with compressor OFF d17 0 80.0 0 0 0 0 0 0

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FANS setting parameters (F) range Models “IP” range – all the versions

Parameter description MIN MAX M2 - M4 M10...201 251…401 501…602 702 - 802 custom

Fan output
F01 0 1 0 0 0 0 0 0
0= absent 1= present

Fan operating mode

0= always ON
1= depending ON the compressor (in parallel oper. mode) F02 0 3 0 - - - - -
2= depending ON the compressor in ON/OFF control
3= depending ON the compressor in speed control mode
Min. voltage threshold for Triac F03 0 F04 35 - - - - -
Max. voltage threshold for Triac F04 F03 100 75 - - - - -
Temp. value for min. speed Cooling -40.0 176.0 35.0
F05 - - - - -
Pressure value for min. speed Cooling /11 /12 13.0

Differential value for max. speed Cooling 0 50.0 10.0

F06 - - - - -
Pressure value for max. speed Cooling 0 300 3.0

Fan shut-down differential in Cooling mode 0 50.0 15.0

F07 - - - - -
Fan shut-down pressure in Cooling mode 0 F5 5.0

Temp. value for min. speed Heating -40.0 176.0 35.0

F08 - - - - -
Pressure value for min. speed Heating /11 /12 13.0

Differential value for max. speed Heating 0 50.0 5.0

F09 - - - - -
Pressure value for max. speed Heating 0 F08 4.0

Fan shut-down differential in Heating mode 0 F08 5.0

F10 - - - - -
Fan shut-down pressure in Heating mode 0 30.0 3.0
Fan starting time F11 0 120 0 - - - - -
Triac impulse duration (fan start) F12 0 10 2 - - - - -

Fan management in defrost mode

0= disabled fans
F13 0 2 0 - - - - -
1= fan in chiller mode
2= max speed after defrost

Fan on time when starting in high condensing temperature F14 0 999 0 - - - - -

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FANS setting parameters (F) range
versions with fan speed control / LT versions
Parameter description MIN MAX M2 - M4 M10...201 251…401 501…602 702 - 802 custom

Fan output
F01 0 1 0 1 1 1 1 1
0= absent 1= present

Fan operating mode

0= always ON
1= depending ON the compressor (in parallel oper. mode) F02 0 3 0 0 0 0 0 0
2= depending ON the compressor in ON/OFF control
3= depending ON the compressor in speed control mode
Min. voltage threshold for Triac F03 0 F04 35 35 35 35 35 35
Max. voltage threshold for Triac F04 F03 100 75 75 75 75 75 75
Temp. value for min. speed Cooling -40.0 176.0 35.0 35.0 35.0 35.0 35.0 35.0
F05
Pressure value for min. speed Cooling /11 /12 13.0 13.0 13.0 13.0 13.0 13.0

Differential value for max. speed Cooling 0 50.0 10.0 10.0 10.0 10.0 10.0 10.0
F06
Pressure value for max. speed Cooling 0 300 3.0 3.0 3.0 3.0 3.0 3.0

Fan shut-down differential in Cooling mode 0 50.0 15.0 15.0 15.0 15.0 15.0 15.0
F07
Fan shut-down pressure in Cooling mode 0 F5 5.0 5.0 5.0 5.0 5.0 5.0

Temp. value for min. speed Heating -40.0 176.0 35.0 35.0 35.0 35.0 35.0 35.0
F08
Pressure value for min. speed Heating /11 /12 13.0 13.0 13.0 13.0 13.0 13.0

Differential value for max. speed Heating 0 50.0 5.0 5.0 5.0 5.0 5.0 5.0
F09
Pressure value for max. speed Heating 0 F08 4.0 4.0 4.0 4.0 4.0 4.0

Fan shut-down differential in Heating mode 0 F08 5.0 5.0 5.0 5.0 5.0 5.0
F10
Fan shut-down pressure in Heating mode 0 30.0 3.0 3.0 3.0 3.0 3.0 3.0
Fan starting time F11 0 120 0 0 0 0 0 0
Triac impulse duration (fan start) F12 0 10 2 2 2 2 2 2

Fan management in defrost mode

0= disabled fans
F13 0 2 0 0 0 0 0 0
1= fan in chiller mode
2= max speed after defrost

Fan on time when starting in high condensing temperature F14 0 999 0 0 0 0 0 0

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UNIT setting parameters (H) range Models “IP” range

Parameter description MIN MAX M2 - M4 M10...201 251…401 501…602 702 - 802 custom

Unit model
0= air_air unit 1= air_air heat pump
2= air_water chiller 3= air_water heat pump 2 per ver. 2 per ver. 2 per ver. 2 per ver. 2 per ver.
4= water_water chiller “solo freddo” “solo freddo” “solo freddo” “solo freddo” “solo freddo”
5= water_water heat pump with reversal on gas circuit
H01 0 10 2
6= water_water heat pump with reversal on water circuit 3 per ver. 3 per ver. 3 per ver. 3 per ver. 3 per ver.
7= condensing unit “pompa di “pompa di “pompa di “pompa di “pompa di
8= reverse-cycle condensing unit calore” calore” calore” calore” calore”
9= water-cooled condensing unit
10= reverse-cycle water-cooled condensing unit

Number of condensers
H02 0 1 0 0 0 0 0 0
0= 1 circuit 1= 2 circuit
Number of evaporators
H03 0 1 0 0 0 0 0 0
0= 1 evaporator 1= 2 evaporatos
Number of compressor for circuit
0= 1 comp./1 circuit 1= 2 comp. Tandem/1circuit
H04 0 5 0 0 0 4 5 5
2= 1 comp. per circuit/2 circuits 3= 2 tandem/2 circuits
4= 1 comp./1 parz./1 circuit 5= 1 comp./1 parz. for circuit
Pumpmode
0= absent 1=always ON
H05 0 3 1 1 1 1 1 1
2= ON upon request of the controller
3= ON upon request of the controller and for set time

Cooling/Heating digital input

H06 0 1 0 0 0 0 0 0
0= absent 1= present

ON/OFF digital input

H07 0 1 0 0 0 0 0 0
0= absent 1= present
µC2 network configuration
0= only µC2 1= µC2 + valve H08 0 3 0 0 0 0 2 2
2= µC2 + exp. 3= µC2 +exp.+valve
Lock keypad
H09 0 1 1 1 1 1 1 1
0= disabled 1= enabled

Serial address H10 1 200 1 1 1 1 1 1

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…follow UNIT setting parameter (H) range Models “IP” range

Parameter description MIN MAX M2 - M4 M10...201 251…401 501…602 702 - 802 custom

Output modes
H11 0 5 0 0 0 1 1 1
(see tab. 5.3 | manual +030220420 CAREL)

Capacity control logic valve and inversion valve

0= both normally closed
1= both normally open
2= inversion valve normally open and capacity-control valve H12 0 3 1 1 1 2 2 2
normally closed
3= inversion valve normally closed and capacity-control
valve normally open

Second pump function

0= disabled
1= backup and weekly rotation
H21 0 4 0 0 0 0 0 0
2= backup and daily rotation
3= condensing control on corresponding set point
4= condensing control always on

Disable load default values

0= function disabled H22 0 1 0 0 0 0 0 0
1= function enabled

Enable Modbus protocol H23 0 1 0 0 0 0 0 0

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ALARMS setting parameters (P) range Models “IP” range

Parameter description MIN MAX M2 - M4 M10...201 251…401 501…602 702 - 802 custom
Flow switch alarm delay when starting the pump P01 0 150 20 20 20 20 20 20
Flow switch alarm delay during steady operation P02 0 120 5 5 5 5 5 5
Low pressure alarm delay at start-up P03 0 200 40 40 40 40 40 40
Enable part load in high pressure P04 0 1 0 0 0 0 0 0
Alarm reset P05 0 6 0 2 0 0 0 0
Cooling/Heating logi
0= : chiller, : heat pump P06 0 1 0 0 0 0 0 0
1= : heat pump, : chiller

Low pressure alarm from transducer

P07 0 1 0 0 0 0 0 0
0= disabled 1= enabled
Digital input 1 selection
0= N 1=FL man 2=FL auto 3=TP man. 4=TP auto
5=TC1 Man. 6=TC1 auto 7=TC2 man. 8=TC2 auto
9=Est./inv. 10=Est./inv. con ritardo 11=LA man. 12=LA auto P08 0 22 0 0 1 1 1 1
13=2°set 14=2°set timer 15=stop defrost c.1
16=stop defrost c.2 17=start defrost c.1 18=start defrost c2.
19=step 1 20=step 2 21=step 3 22=step 4
Digital input 2 selection (see tab. P08) P09 0 22 0 0 5 5 5 5
Digital input 6 selection (see tab. P08) P10 0 22 0 0 0 0 0 0
Digital input 7 selection (see tab. P08) P11 0 22 0 0 0 0 7 7
Digital input 10 selection (see tab. P08) P12 0 22 0 0 0 0 0 0
Configuration of B4 as P8 if /4=1 (digital input) P13 0 22 0 0 0 0 0 0
Configuration of B8 as P8 if /8=1 (digital input) P14 0 22 0 0 0 0 0 0
Low pressure alarm L configuration
0= not active with compressor OFF P15 0 1 0 0 0 0 0 0
1= active with compressor OFF
High temperature alarm set P16 -40.0 176.0 80.0 80.0 80.0 80.0 80.0 80.0
High temperature alarm delay at start-up P17 0 250 30 30 30 30 30 30
High pressure alarm set from transducer P18 0 99.9 20.0 20.0 20.0 20.0 20.0 20.0
System low temperature alarm set point P19 -40.0 176.0 10.0 10.0 10.0 10.0 10.0 10.0
Enable system start-up protection
P20 0 1 0 0 0 0 0 0
0= disabled 1=enabled

Alarm relay management

P21 0 1 0 0 0 0 0 0
0= normally de-activated 1=norm. activated

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CONTROL setting parameters (r) range Models “IP” range

Parameter description MIN MAX M2 - M4 M10...201 251…401 501…602 702 - 802 custom
Cooling (Summer) set point r01 r13 r14 12.0 7.0 7.0 7.0 7.0 7.0
Cooling (summer) differential r02 0.3 50.0 3.0 3.0 3.0 3.0 3.0 3.0
Heating (Winter) set point r03 r15 r16 40.0 40.0 40.0 40.0 40.0 40.0
Heating (Winter) differential r04 0.3 50.0 3.0 3.0 3.0 3.0 3.0 3.0
Compressor rotation
0= disabled 1= FIFO type
r05 0 3 0 0 0 0 1 1
2= hourcontrol
3= direct relation between D.I. and compressors D.O.
Type of compressor control
0= prop. on inlet 1= prop. on inlet. + dead zone
r06 0 4 0 0 0 0 0 0
2= prop. on outlet 3= prop. on outlet + dead zone
4= time on outlet with dead zone
Dead zone differential r07 0.1 50.0 2.0 2.0 2.0 2.0 2.0 2.0
Activation delay at lower limit of r07 r08 0 999 120 120 120 120 120 120
Activation delay at upper limit of r07 r09 0 999 100 100 100 100 100 100
Deactivation delay of lower limit of r12 r10 0 999 120 120 120 120 120 120
Deactivation delay at upper limit of r12 r11 0 999 100 100 100 100 100 100
Compressor deactivation differential r12 0 50.0 2.0 2.0 2.0 2.0 2.0 2.0
Min. cooling (Summer) set point r13 -40.0 r14 -40 5.0 5.0 5.0 5.0 5.0
Max. cooling (Summer) set point r14 r13 176.0 80.0 25.0 25.0 25.0 25.0 25.0
Min. heating (Winter) set point r15 -40.0 r16 -40 30.0 30.0 30.0 30.0 30.0
Max. heating (Winter) set point r16 r15 176.0 80.0 50.0 50.0 50.0 50.0 50.0
Cooling compensation constant r17 -5.0 +5.0 0.0 0.0 0.0 0.0 0.0 0.0
Maximum distance from the set point r18 0.3 20.0 0.3 0.3 0.3 0.3 0.3 0.3
Start compensation temperature in cooling mode r19 -40.0 176.0 30.0 30.0 30.0 30.0 30.0 30.0
Start compensation temperature in heating mode r20 -40.0 176.0 0 0 0 0 0 0
Second cooling set point from external contact r21 r13 r14 12.0 12.0 12.0 12.0 12.0 12.0
Second heating set point from external contact r22 r15 r16 40.0 40.0 40.0 40.0 40.0 40.0
Enable accumulation vessel suppression
0= disabled 1= enabled in cool r27 0 3 0 0 0 0 0 0
2= enabled in heat 3= always enabled
Minimum time to determine low load conditions r28 0 999 60 60 60 60 60 60
Low load differential in cool pump mode r29 0.3 50.0 3.0 3.0 3.0 3.0 3.0 3.0
Low load differential in heat pump mode r30 0.3 50.0 3.0 3.0 3.0 3.0 3.0 3.0
Heating compensation constant r31 -5.0 +5.0 0.0 0.0 0.0 0.0 0.0 0.0

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CONTROL setting parameters (r) range Models “IP” range – LT version (low temperature)

Parameter description MIN MAX M2 - M4 M10...201 251…401 501…602 702 - 802 custom
Cooling (Summer) set point r01 r13 r14 12.0 - -20.0 -20.0 -20.0 -20.0
Cooling (summer) differential r02 0.3 50.0 3.0 - 3.0 3.0 3.0 3.0
Heating (Winter) set point r03 r15 r16 40.0 - 40.0 40.0 40.0 40.0
Heating (Winter) differential r04 0.3 50.0 3.0 - 3.0 3.0 3.0 3.0
Compressor rotation
0= disabled 1= FIFO type
r05 0 3 0 - 0 0 1 1
2= hourcontrol
3= direct relation between D.I. and compressors D.O.
Type of compressor control
0= prop. on inlet 1= prop. on inlet. + dead zone
r06 0 4 0 - 0 0 0 0
2= prop. on outlet 3= prop. on outlet + dead zone
4= time on outlet with dead zone
Dead zone differential r07 0.1 50.0 2.0 - 2.0 2.0 2.0 2.0
Activation delay at lower limit of r07 r08 0 999 120 - 120 120 120 120
Activation delay at upper limit of r07 r09 0 999 100 - 100 100 100 100
Deactivation delay of lower limit of r12 r10 0 999 120 - 120 120 120 120
Deactivation delay at upper limit of r12 r11 0 999 100 - 100 100 100 100
Compressor deactivation differential r12 0 50.0 2.0 - 2.0 2.0 2.0 2.0
Min. cooling (Summer) set point r13 -40.0 r14 -40 - -30.0 -30.0 -30.0 -30.0
Max. cooling (Summer) set point r14 r13 176.0 80.0 - 20.0 20.0 20.0 20.0
Min. heating (Winter) set point r15 -40.0 r16 -40 - 30.0 30.0 30.0 30.0
Max. heating (Winter) set point r16 r15 176.0 80.0 - 50.0 50.0 50.0 50.0
Cooling compensation constant r17 -5.0 +5.0 0.0 - 0.0 0.0 0.0 0.0
Maximum distance from the set point r18 0.3 20.0 0.3 - 0.3 0.3 0.3 0.3
Start compensation temperature in cooling mode r19 -40.0 176.0 30.0 - 30.0 30.0 30.0 30.0
Start compensation temperature in heating mode r20 -40.0 176.0 0 - 0 0 0 0
Second cooling set point from external contact r21 r13 r14 12.0 - 12.0 12.0 12.0 12.0
Second heating set point from external contact r22 r15 r16 40.0 - 40.0 40.0 40.0 40.0
Enable accumulation vessel suppression
0= disabled 1= enabled in cool r27 0 3 0 - 0 0 0 0
2= enabled in heat 3= always enabled
Minimum time to determine low load conditions r28 0 999 60 - 60 60 60 60
Low load differential in cool pump mode r29 0.3 50.0 3.0 - 3.0 3.0 3.0 3.0
Low load differential in heat pump mode r30 0.3 50.0 3.0 - 3.0 3.0 3.0 3.0
Heating compensation constant r31 -5.0 +5.0 0.0 - 0.0 0.0 0.0 0.0

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R407c GAS CHEMICAL SAFETY DATA SHEET

PRODUCT NAME: REFRIGERANT GAS R407c

COMPOSITION/INFORMATION ON INGREDIENTS
EEC No.: 200-839-4 HFC32, 206-557-8 HFC125, 212-377-0 HFC134a

HAZARDOUS INGREDIENT(S) CAS No. % (w/w) Symbol R Phrases

Difluoromethane (HFC 32) 000075-10-5 23 F+ R12
Pentafluoroethane (HFC 125) 000354-33-6 25
1,1,1,2-tetrafluoroethane (HFC 134a) 000811-97-2 52

HAZARDS IDENTIFICATION
Low acute toxicity. High exposures may cause an abnormal heart rhythm and prove suddenly fatal. Very high atmospheric
concentrations may cause anaesthetic effects and asphyxiation.
Liquid splashes or spray may cause freeze burns to skin and eyes.

FIRST-AID MEASURES
The first aid advice given for skin contact, eye contact, and ingestion is applicable following exposures to the liquid or spray.
See also TOXICOLOGICAL INFORMATION.
Inhalation: Remove patient from exposure, keep warm and at rest. Administer oxygen if necessary. Apply artificial
respiration if breathing has ceased or shows signs of failing. In the event of cardiac arrest apply external
cardiac massage. Obtain immediate medical attention.

Skin Contact: Thaw affected areas with water. Remove contaminated clothing. Caution: clothing may adhere to the skin in the case of
freeze burns. After contact with skin, wash immediately with plenty of warm water. If irritation or blistering occur obtain
medical attention.

Eye Contact: Immediately irrigate with eyewash solution or clean water, holding the eyelids apart, for at least 10 minutes.
Obtain immediate medical attention.

Ingestion: Unlikely route of exposure.

Do not induce vomiting. Provided the patient is conscious, wash out mouth with water and give 200-300 ml (half a pint)
of water to drink. Obtain immediate medical attention.

Further Medical Treatment

Symptomatic treatment and supportive therapy as indicated.
Adrenaline and similar sympathomimetic drugs should be avoided following exposure as cardiac arrhythmia may result with possible
subsequent cardiac arrest.

FIRE-FIGHTING MEASURES
This refrigerant is not flammable in air under ambient conditions of temperature and pressure. Certain mixtures of this refrigerant and air
when under pressure may be flammable. Mixtures of this refrigerant and air under pressure should be avoided.
Certain mixtures of HFCs and chlorine may be flammable or reactive under certain conditions.
Thermal decomposition will evolve very toxic and corrosive vapours. ( hydrogen fluoride )
Containers may burst if overheated.

Extinguishing Media: As appropriate for surrounding fire. Water spray should be used to cool containers.

Fire Fighting Protective Equipment: A self contained breathing apparatus and full protective clothing must be worn in fire conditions.
See Also EXPOSURE CONTROLS/PERSONAL PROTECTION.

ACCIDENTAL RELEASE MEASURES

Ensure suitable personal protection (including respiratory protection) during removal of spillages. See Also EXPOSURE
CONTROLS/PERSONAL PROTECTION.
Provided it is safe to do so, isolate the source of the leak. Allow small spillages to evaporate provided there is adequate ventilation.
Large spillages: Ventilate area. Contain spillages with sand, earth or any suitable adsorbent material. Prevent liquid from entering drains,
sewers, basements and workpits since the vapour may create a suffocating atmosphere.

HANDLING AND STORAGE

HANDLING
Avoid inhalation of high concentrations of vapours. Atmospheric levels should be controlled in compliance with the occupational exposure
limit. Atmospheric concentrations well below the occupational exposure limit can be achieved by good occupational hygiene practice.
The vapour is heavier than air, high concentrations may be produced at low levels where general ventilation is poor, in such cases provide
adequate ventilation or wear suitable respiratory protective equipment with positive air supply.
Avoid contact with naked flames and hot surfaces as corrosive and very toxic decomposition products can be formed.
Avoid contact between the liquid and skin and eyes.
For correct refrigerant composition, systems should be charged using the liquid phase and not the vapour phase.

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Process Hazards
Liquid refrigerant transfers between refrigerant containers and to and from systems can result in static generation. Ensure
adequate earthing.
Certain mixtures of HFCs and chlorine may be flammable or reactive under certain conditions.
STORAGE
Keep in a well ventilated place. Keep in a cool place away from fire risk, direct sunlight and all sources of heat such as electric and steam
radiators.
Avoid storing near to the intake of air conditioning units, boiler units and open drains.
Cylinders and Drums:
Keep container dry.
Storage temperature (Deg C): < 45

EXPOSURE CONTROLS/PERSONAL PROTECTION

Wear suitable protective clothing, gloves and eye/face protection. Wear thermal insulating gloves when handling liquefied gases.
In cases of insufficient ventilation, where exposure to high concentrations of vapour is possible, suitable respiratory protective equipment
with positive air supply should be used.

Occupational Exposure Limits

HAZARDOUS INGREDIENT(S) TWA TWA STEL STEL
ppm mg/m3 ppm mg/m3

Difluoromethane 1000 - - - COM

(HFC 32)
Pentafluoroethane 1000 - - - COM
(HFC 125)
1,1,1,2- Tetrafluoroethane 1000 4240 - - OES
(HFC 134a)

PHYSICAL AND CHEMICAL PROPERTIES

Form: liquified gas
Colour: colourless
Odour: slight ethereal
Boiling Point (Deg C): -44.3 to -37.1 (boiling range)
Vapour Pressure (mm Hg): 7810 at 20 Deg C
Density (g/ml): 1.16 at 20 Deg C
Solubility (Water): insoluble
Solubility (Other): soluble in: chlorinated solvents, alcohols, esters
Vapour Density (Air= 1): 3.0 at bubble point temperature

STABILITY AND REACTIVITY

Hazardous Reactions: Certain mixtures of HFCs and chlorine may be flammable or reactive under certain conditions.
Incompatible materials: finely divided metals, magnesium and alloys containing more than 2% magnesium.
Can react violently if in contact with alkali metals and alkaline earth metals -sodium, potassium, barium.
Hazardous Decomposition Product(s): hydrogen fluoride by thermal decomposition and hydrolysis.

TOXICOLOGICAL INFORMATION
Inhalation
High exposures may cause an abnormal heart rhythm and prove suddenly fatal. Very high atmospheric concentrations may cause
anaesthetic effects and asphyxiation.

Skin Contact
Liquid splashes or spray may cause freeze burns. Unlikely to be hazardous by skin absorption.

Eye Contact
Liquid splashes or spray may cause freeze burns.

Ingestion
Highly unlikely - but should this occur freeze burns will result.

Long Term Exposure

HFC 32: An inhalation study in animals has shown that repeated exposures produce no significant effects (49,500ppm in rats).

HFC 125: An inhalation study in animals has shown that repeated exposures produce no significant effects (50,000ppm in rats).

HFC 134a: A lifetime inhalation study in rats has shown that exposure to 50,000ppm resulted in benign tumours of the testis.
The increased tumour incidence was observed only after prolonged exposure to high levels, and is considered not to be
of relevance to humans occupationally exposed to HFC 134a at or below the occupational exposure limit.

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ECOLOGICAL INFORMATION
Environmental Fate and Distribution
High tonnage material produced in wholly contained systems. High tonnage material used in open systems. Vapour.

Persistence and Degradation

HFC 32: Decomposed comparatively rapidly in the lower atmosphere (troposphere). Atmospheric lifetime is 5.6 year(s).
Has a Halocarbon Global Warming Potential (HGWP) of 0.15 (relative to a value of 1 for CFC 11) or a Global Warming Potential (GWP) of
650 (relative to a value of 1 for carbon dioxide at 100 years).

HFC 125: Decomposed slowly in the lower atmosphere (troposphere). Atmospheric lifetime is 32.6 year(s).
Has a Halocarbon Global Warming Potential (HGWP) of 0.70 (relative to a value of 1 for CFC 11) or a Global Warming Potential (GWP) of
2800 (relative to a value of 1 for carbon dioxide at 100 years).

HFC 134a: Decomposed comparatively rapidly in the lower atmosphere (troposphere). Atmospheric lifetime is 13.6 year(s).
Has a Halocarbon Global Warming Potential (HGWP) of 0.30 (relative to a value of 1 for CFC 11) or a Global Warming Potential (GWP) of
1300 (relative to a value of 1 for carbon dioxide at 100 years).

HFC 32, HFC 125, HFC 134a: Do not influence photochemical smog (i.e. they are not VOCs under the terms of the UNECE agreement). Do
not deplete ozone.

Effect on Effluent Treatment

Discharges of the product will enter the atmosphere and will not result in long term aqueous contamination.

DISPOSAL CONSIDERATIONS
Best to recover and recycle. If this is not possible, destruction is to be in an approved facility which is equipped to absorb and neutralise
acid gases and other toxic processing products.

TRANSPORT INFORMATION
UN No.: 3340

AIR
ICAO/IATA
-primary: 2.2

SEA
IMDG
-primary: 2.2
Marine Pollutant: Not classified as a Marine Pollutant
Proper Shipping Name: REFRIGERANT GAS R 407C

ROAD/RAIL
ADR/RID Class: 2
ADR/RID Item No: 2A
ADR Sin: 3340

REGULATORY INFORMATION
Not Classified as Hazardous to Users.

GLOSSARY

OES: Occupational Exposure Standard (UK HSE EH40)

MEL: Maximum Exposure Limit (UK HSE EH40)
COM: The company aims to control exposure in its workplace to this limit
TLV: The company aims to control exposure in its workplace to the ACGIH limit
TLV-C: The company aims to control exposure in its workplace to the ACGIH Ceiling limit
MAK: The company aims to control exposure in its workplace to the German limit
Sk: Can be absorbed through skin
Sen: Capable of causing respiratory sensitisation
Bmgv: Biological monitoring guidance value (UK HSE EH40)
ILV: Indicative Limit Value (UK HSE EH40)

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R404a GAS CHEMICAL SAFETY DATA SHEET

PRODUCT NAME: REFRIGERANT GAS R404a

COMPOSITION/INFORMATION ON INGREDIENTS
No. CEE: 206-996-5 HFC 143a, 206-557-8 HFC 125, 212-377-0 HFC 134a

HAZARDOUS INGREDIENT(S) CAS No. % (w/w) Symbol R Phrases

1,1,1-Trifluoroethane (HFC 143a) 000420-46-2 52 F+ R12
Pentafluoroethane (HFC 125) 000354-33-6 44
1,1,1,2-tetrafluoroethane (HFC 134a) 000811-97-2 4

HAZARDS IDENTIFICATION
Low acute toxicity. High exposures may cause an abnormal heart rhythm and prove suddenly fatal. Very high atmospheric concentrations
may cause anaesthetic effects and asphyxiation.
Liquid splashes or spray may cause freeze burns to skin and eyes.

FIRST-AID MEASURES
The first aid advice given for skin contact, eye contact, and ingestion is applicable following exposures to the liquid or spray. See also
TOXICOLOGICAL INFORMATION.
Inhalation: Remove patient from exposure, keep warm and at rest. Administer oxygen if necessary. Apply artificial respiration if
breathing has ceased or shows signs of failing. In the event of cardiac arrest apply external cardiac massage. Obtain
immediate medical attention.

Skin Contact: Thaw affected areas with water. Remove contaminated clothing. Caution: clothing may adhere to the skin in the case of
freeze burns. After contact with skin, wash immediately with plenty of warm water. If irritation or blistering occur obtain
medical attention.

Eye Contact: Immediately irrigate with eyewash solution or clean water, holding the eyelids apart, for at least 10 minutes.
Obtain immediate medical attention.

Ingestion: Unlikely route of exposure.

Do not induce vomiting. Provided the patient is conscious, wash out mouth with water and give 200-300 ml (half a pint)
of water to drink. Obtain immediate medical attention.

Further Medical Treatment

Symptomatic treatment and supportive therapy as indicated.
Adrenaline and similar sympathomimetic drugs should be avoided following exposure as cardiac arrhythmia may result with possible
subsequent cardiac arrest.

FIRE-FIGHTING MEASURES
This refrigerant is not flammable in air under ambient conditions of temperature and pressure. Certain mixtures of this refrigerant and air
when under pressure may be flammable. Mixtures of this refrigerant and air under pressure should be avoided.
Certain mixtures of HFCs and chlorine may be flammable or reactive under certain conditions.
Thermal decomposition will evolve very toxic and corrosive vapours. ( hydrogen fluoride )
Containers may burst if overheated.

Extinguishing Media: As appropriate for surrounding fire. Water spray should be used to cool containers.

Fire Fighting Protective Equipment: A self contained breathing apparatus and full protective clothing must be worn in fire conditions.
See Also EXPOSURE CONTROLS/PERSONAL PROTECTION.

ACCIDENTAL RELEASE MEASURES

Ensure suitable personal protection (including respiratory protection) during removal of spillages. See Also EXPOSURE
CONTROLS/PERSONAL PROTECTION.
Provided it is safe to do so, isolate the source of the leak. Allow small spillages to evaporate provided there is adequate ventilation.
Large spillages: Ventilate area. Contain spillages with sand, earth or any suitable adsorbent material. Prevent liquid from entering drains,
sewers, basements and workpits since the vapour may create a suffocating atmosphere.

HANDLING AND STORAGE

HANDLING
Avoid inhalation of high concentrations of vapours. Atmospheric levels should be controlled in compliance with the occupational exposure
limit. Atmospheric concentrations well below the occupational exposure limit can be achieved by good occupational hygiene practice.
The vapour is heavier than air, high concentrations may be produced at low levels where general ventilation is poor, in such cases provide
adequate ventilation or wear suitable respiratory protective equipment with positive air supply.
Avoid contact with naked flames and hot surfaces as corrosive and very toxic decomposition products can be formed.
Avoid contact between the liquid and skin and eyes.
For correct refrigerant composition, systems should be charged using the liquid phase and not the vapour phase.

Process Hazards
Liquid refrigerant transfers between refrigerant containers and to and from systems can result in static generation. Ensure
adequate earthing.
Certain mixtures of HFCs and chlorine may be flammable or reactive under certain conditions.

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STORAGE
Keep in a well ventilated place. Keep in a cool place away from fire risk, direct sunlight and all sources of heat such as electric and steam
radiators.
Avoid storing near to the intake of air conditioning units, boiler units and open drains.
Cylinders and Drums:
Keep container dry.
Storage temperature (Deg C): < 45

EXPOSURE CONTROLS/PERSONAL PROTECTION

Wear suitable protective clothing, gloves and eye/face protection. Wear thermal insulating gloves when handling liquefied gases.
In cases of insufficient ventilation, where exposure to high concentrations of vapour is possible, suitable respiratory protective equipment
with positive air supply should be used.

Occupational Exposure Limits

HAZARDOUS INGREDIENT(S) TWA TWA STEL STEL
ppm mg/m3 ppm mg/m3

1,1,1,2-Trifluoroethane (HFC 143a) 1000 - - - COM

Pentafluoroethane (HFC 125) 1000 - - - COM
1,1,1,2- Tetrafluoroethane 1000 4240 - - OES
(HFC 134a)

PHYSICAL AND CHEMICAL PROPERTIES

Form: liquified gas
Colour: colourless
Odour: slight ethereal
Boiling Point (Deg C): -47.2 to -46.4 (boiling range)
Vapour Pressure (mm Hg): 8270 at 20 Deg C
Density (g/ml): 1.06 at 20 Deg C
Solubility (Water): insoluble
Solubility (Other): soluble in: chlorinated solvents, alcohols, esters
Vapour Density (Air= 1): 3.42 approx. at bubble point temperature

STABILITY AND REACTIVITY

Hazardous Reactions: Certain mixtures of HFCs and chlorine may be flammable or reactive under certain conditions.
Incompatible materials: finely divided metals, magnesium and alloys containing more than 2% magnesium.
Can react violently if in contact with alkali metals and alkaline earth metals -sodium, potassium, barium.
Hazardous Decomposition Product(s): hydrogen fluoride by thermal decomposition and hydrolysis.

TOXICOLOGICAL INFORMATION
Inhalation
High exposures may cause an abnormal heart rhythm and prove suddenly fatal. Very high atmospheric concentrations may cause
anaesthetic effects and asphyxiation.

Skin Contact
Liquid splashes or spray may cause freeze burns. Unlikely to be hazardous by skin absorption.

Eye Contact
Liquid splashes or spray may cause freeze burns.

Ingestion
Highly unlikely - but should this occur freeze burns will result.

Long Term Exposure

HFC 143a: An inhalation study in animals has shown that repeated exposures produce no significant effects (40,000ppm in rats).

HFC 125: An inhalation study in animals has shown that repeated exposures produce no significant effects (50,000ppm in rats).

HFC 134a: A lifetime inhalation study in rats has shown that exposure to 50,000ppm resulted in benign tumours of the testis.
The increased tumour incidence was observed only after prolonged exposure to high levels, and is considered not to be
of relevance to humans occupationally exposed to HFC 134a at or below the occupational exposure limit.

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ECOLOGICAL INFORMATION
Environmental Fate and Distribution
High tonnage material produced in wholly contained systems. High tonnage material used in open systems. Vapour.

Persistence and Degradation

HFC 143a: Decomposed comparatively rapidly in the lower atmosphere (troposphere). Atmospheric lifetime is 53.5 year(s).
Has a Halocarbon Global Warming Potential (HGWP) of 0.15 (relative to a value of 1 for CFC 11) or a Global Warming Potential (GWP) of
3800 (relative to a value of 1 for carbon dioxide at 100 years).

HFC 125: Decomposed slowly in the lower atmosphere (troposphere). Atmospheric lifetime is 32.6 year(s).
Has a Halocarbon Global Warming Potential (HGWP) of 0.70 (relative to a value of 1 for CFC 11) or a Global Warming Potential (GWP) of
2800 (relative to a value of 1 for carbon dioxide at 100 years).

HFC 134a: Decomposed comparatively rapidly in the lower atmosphere (troposphere). Atmospheric lifetime is 13.6 year(s).
Has a Halocarbon Global Warming Potential (HGWP) of 0.30 (relative to a value of 1 for CFC 11) or a Global Warming Potential (GWP) of
1300 (relative to a value of 1 for carbon dioxide at 100 years).

HFC 143a, HFC 125, HFC 134a: Do not influence photochemical smog (i.e. they are not VOCs under the terms of the UNECE agreement).
Do not deplete ozone.

Effect on Effluent Treatment

Discharges of the product will enter the atmosphere and will not result in long term aqueous contamination.

DISPOSAL CONSIDERATIONS
Best to recover and recycle. If this is not possible, destruction is to be in an approved facility which is equipped to absorb and neutralise
acid gases and other toxic processing products.

TRANSPORT INFORMATION
UN No.: 3337

AIR
ICAO/IATA
-primary: 2.2

SEA
IMDG
-primary: 2.2
Marine Pollutant: Not classified as a Marine Pollutant
Proper Shipping Name: REFRIGERANT GAS R 407C

ROAD/RAIL
ADR/RID Class: 2
ADR/RID Item No: 2A
ADR Sin: 3337

REGULATORY INFORMATION
Not Classified as Hazardous to Users.

GLOSSARY

OES: Occupational Exposure Standard (UK HSE EH40)

MEL: Maximum Exposure Limit (UK HSE EH40)
COM: The company aims to control exposure in its workplace to this limit
TLV: The company aims to control exposure in its workplace to the ACGIH limit
TLV-C: The company aims to control exposure in its workplace to the ACGIH Ceiling limit
MAK: The company aims to control exposure in its workplace to the German limit
Sk: Can be absorbed through skin
Sen: Capable of causing respiratory sensitisation
Bmgv: Biological monitoring guidance value (UK HSE EH40)
ILV: Indicative Limit Value (UK HSE EH40)

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R134a GAS CHEMICAL SAFETY DATA SHEET

PRODUCT NAME: REFRIGERANT GAS R134a

COMPOSITION/INFORMATION ON INGREDIENTS
CAS No.: 000811-97-2
EEC No.: 212-377-0

HAZARDOUS INGREDIENT(S) CAS No. Symbol R Phrases

1,1,1,2-tetrafluoroethane (HFC 134a) 000811-97-2

HAZARDS IDENTIFICATION
Low acute toxicity. High exposures may cause an abnormal heart rhythm and prove suddenly fatal. Very high atmospheric
concentrations may cause anaesthetic effects and asphyxiation.
Liquid splashes or spray may cause freeze burns to skin and eyes.

FIRST-AID MEASURES
The first aid advice given for skin contact, eye contact, and ingestion is applicable following exposures to the liquid or spray.
See also TOXICOLOGICAL INFORMATION.
Inhalation: Remove patient from exposure, keep warm and at rest. Administer oxygen if necessary. Apply artificial
respiration if breathing has ceased or shows signs of failing. In the event of cardiac arrest apply external
cardiac massage. Obtain immediate medical attention.

Skin Contact: Thaw affected areas with water. Remove contaminated clothing. Caution: clothing may adhere to the skin in the case of
freeze burns. After contact with skin, wash immediately with plenty of warm water. If irritation or blistering occur obtain
medical attention.

Eye Contact: Immediately irrigate with eyewash solution or clean water, holding the eyelids apart, for at least 10 minutes.
Obtain immediate medical attention.

Ingestion: Unlikely route of exposure.

Do not induce vomiting. Provided the patient is conscious, wash out mouth with water and give 200-300 ml (half a pint)
of water to drink. Obtain immediate medical attention.

Further Medical Treatment

Symptomatic treatment and supportive therapy as indicated.
Adrenaline and similar sympathomimetic drugs should be avoided following exposure as cardiac arrhythmia may result with possible
subsequent cardiac arrest.

FIRE-FIGHTING MEASURES
This refrigerant is not flammable in air under ambient conditions of temperature and pressure. Certain mixtures of this refrigerant and air
when under pressure may be flammable. Mixtures of this refrigerant and air under pressure should be avoided.
Certain mixtures of HFCs and chlorine may be flammable or reactive under certain conditions.
Thermal decomposition will evolve very toxic and corrosive vapours. ( hydrogen fluoride )
Containers may burst if overheated.

Extinguishing Media: As appropriate for surrounding fire. Water spray should be used to cool containers.

Fire Fighting Protective Equipment: A self contained breathing apparatus and full protective clothing must be worn in fire conditions.
See Also EXPOSURE CONTROLS/PERSONAL PROTECTION.

ACCIDENTAL RELEASE MEASURES

Ensure suitable personal protection (including respiratory protection) during removal of spillages. See Also EXPOSURE
CONTROLS/PERSONAL PROTECTION.
Provided it is safe to do so, isolate the source of the leak. Allow small spillages to evaporate provided there is adequate ventilation.
Large spillages: Ventilate area. Contain spillages with sand, earth or any suitable adsorbent material. Prevent liquid from entering drains,
sewers, basements and workpits since the vapour may create a suffocating atmosphere.

HANDLING AND STORAGE

HANDLING
Avoid inhalation of high concentrations of vapours. Atmospheric levels should be controlled in compliance with the occupational exposure
limit. Atmospheric concentrations well below the occupational exposure limit can be achieved by good occupational hygiene practice.
The vapour is heavier than air, high concentrations may be produced at low levels where general ventilation is poor, in such cases provide
adequate ventilation or wear suitable respiratory protective equipment with positive air supply.
Avoid contact with naked flames and hot surfaces as corrosive and very toxic decomposition products can be formed.
Avoid contact between the liquid and skin and eyes.
For correct refrigerant composition, systems should be charged using the liquid phase and not the vapour phase.

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STORAGE
Keep in a well ventilated place. Keep in a cool place away from fire risk, direct sunlight and all sources of heat such as electric and steam
radiators.
Avoid storing near to the intake of air conditioning units, boiler units and open drains.
Cylinders and Drums:
Keep container dry.
Storage temperature (Deg C): < 45

EXPOSURE CONTROLS/PERSONAL PROTECTION

Wear suitable protective clothing, gloves and eye/face protection. Wear thermal insulating gloves when handling liquefied gases.
In cases of insufficient ventilation, where exposure to high concentrations of vapour is possible, suitable respiratory protective equipment
with positive air supply should be used.

Occupational Exposure Limits

HAZARDOUS INGREDIENT(S) TWA TWA STEL STEL
ppm mg/m3 ppm mg/m3

1,1,1,2- Tetrafluoroethane 1000 4240 - - OES

(HFC 134a)

PHYSICAL AND CHEMICAL PROPERTIES

Form: liquified gas
Colour: colourless
Odour: slight ethereal
Boiling Point (Deg C): -26.2
Vapour Pressure (mm Hg): 4270 at 20 Deg C
Density (g/ml): 1.22 at 20 Deg C
Solubility (Water): insoluble
Solubility (Other): soluble in: chlorinated solvents, alcohols, esters
Vapour Density (Air= 1): 3.66 at bubble point temperature

STABILITY AND REACTIVITY

Hazardous Reactions: Certain mixtures of HFCs and chlorine may be flammable or reactive under certain conditions.
Incompatible materials: finely divided metals, magnesium and alloys containing more than 2% magnesium.
Can react violently if in contact with alkali metals and alkaline earth metals -sodium, potassium, barium.
Hazardous Decomposition Product(s): hydrogen fluoride by thermal decomposition and hydrolysis.

TOXICOLOGICAL INFORMATION
Inhalation
High exposures may cause an abnormal heart rhythm and prove suddenly fatal. Very high atmospheric concentrations may cause
anaesthetic effects and asphyxiation.

Skin Contact
Liquid splashes or spray may cause freeze burns. Unlikely to be hazardous by skin absorption.

Eye Contact
Liquid splashes or spray may cause freeze burns.

Ingestion
Highly unlikely - but should this occur freeze burns will result.

Long Term Exposure

A lifetime inhalation study in rats has shown that exposure to 50,000ppm resulted in benign tumours of the testis.
The increased tumour incidence was observed only after prolonged exposure to high levels, and is considered not to be of relevance to
humans occupationally exposed to HFC 134a at or below the occupational exposure limit.

ECOLOGICAL INFORMATION
Environmental Fate and Distribution
High tonnage material produced in wholly contained systems. High tonnage material used in open systems. Vapour.

Persistence and Degradation

Decomposed comparatively rapidly in the lower atmosphere (troposphere). Atmospheric lifetime is 13.6 year(s).
Has a Halocarbon Global Warming Potential (HGWP) of 0.30 (relative to a value of 1 for CFC 11) or a Global Warming Potential (GWP) of
1300 (relative to a value of 1 for carbon dioxide at 100 years).

Effect on Effluent Treatment

Discharges of the product will enter the atmosphere and will not result in long term aqueous contamination.

DISPOSAL CONSIDERATIONS
Best to recover and recycle. If this is not possible, destruction is to be in an approved facility which is equipped to absorb and neutralise
acid gases and other toxic processing products.

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TRANSPORT INFORMATION
UN No.: 3159

AIR
ICAO/IATA
-primary: 2.2

SEA
IMDG
-primary: 2.2
Marine Pollutant: Not classified as a Marine Pollutant
Proper Shipping Name: 1,1,1,2-TETRAFLUOROETHANE

ROAD/RAIL
ADR/RID Class: 2
ADR/RID Item No: 2A
ADR Sin: 3159

REGULATORY INFORMATION
Not Classified as Hazardous to Users.

GLOSSARY

OES: Occupational Exposure Standard (UK HSE EH40)

MEL: Maximum Exposure Limit (UK HSE EH40)
COM: The company aims to control exposure in its workplace to this limit
TLV: The company aims to control exposure in its workplace to the ACGIH limit
TLV-C: The company aims to control exposure in its workplace to the ACGIH Ceiling limit
MAK: The company aims to control exposure in its workplace to the German limit
Sk: Can be absorbed through skin
Sen: Capable of causing respiratory sensitisation
Bmgv: Biological monitoring guidance value (UK HSE EH40)
ILV: Indicative Limit Value (UK HSE EH40)

IP_E-C_2.0UK [Ver. 2.0 Rev. 1 of 23-06-2006] 52