EKWXA │EKWXBA O - Hitecsa.com · It is provided with R-410A refrigerant charge already for ... - Check valve for cycle ... The unit is equipped with thermostatic expansion valves

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Models: 1601.2│2001.2│2401.2│2501.2│3001.2│

│3501.2│4001.2│4501.2│

Cooling capacities: 48,1 a 120,2 KW

Heating capacities 51,1 a 133,2 KW

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EKWXA │EKWXBA AIR COOLED WATER CHILLERS – AXIAL FANS

COOLING ONLY │ HEAT PUMP

06.16 Ref. 207565 Rev100

AIR COOLED WATER CHILLERS – AXIAL FANS

EkWXA - EkWXBA

11.15 Ref. 207565 Rev.100

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Manual purpose

This manual and the 88610 and 88611

documents have been created to guide in the

correct installation, start-up and maintenance of

the unit. For this reason is essential to read the

instructions paying due attention. The

manufacturer waives any liability, for possible

damages on persons or stuff, as a consequence

of an improper use of this unit and/or non-

compliance with these instructions.

Manual preservation

This manual and the electric diagram of the unit

must be retained and remain available to the

operator for further consultation.

Local safety standards

Follow the local security standards during

installation.

Electrical network

Check that electrical network features are in

accordance to data shown in the data nameplate

of the unit.

Packaging

Packaging material (plastic bags, cellular

polystyrene, cloves, etc.) constitutes a

dangerous source, for that it should be kept out

of the reach of children and recycled correctly

according to local security standards.

Maintenance

Before executing any maintenance operation,

cut off the unit power supply. Operations have to

be carried out following local security standards.

Periodic inspections

Carry out periodic inspections to detect possible

damaged or broken pieces. If they are not

repaired it could result in damage to people or

stuff.

Incorrect operation In case of breakdowns or operation faults, turn

off unit.

Repairs

Reparations should be always realized for

trained personal authorized by the manufacturer

using original spares. Failure to comply with

these warnings could affect the safety features

of the unit.

Modifications

All manufacturer responsibility is declined when

the warranty has been expired in case of

electrical and/or mechanical modifications.

Alterations in general not expressly allowed and

not respecting what is instructed here, they

cause the warranty expiration

Use

The unit will only be used for the purpose it has

been conceived. Any other use does not imply

any kind of compromise or liability for the

manufacturer.

Principles of security on installation

The unit is designed and built so that a risk to

health and security for people are not supposed.

Suitable project solutions have been adopted to

delete possible causes of risk in the system.

Data actualization

Continuous improvements to the product may

determine variations in the data given even

without notice by the manufacturer.

Standards and cerifications

CE

QUALIFICATION: Our units have CE brand in

accordance with the expected for the relevant

community directive, and its last modifications,

as well as for each country's national legislation.

INTRODUCTION


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• Installation and maintenance of air conditioning equipment can be dangerous because the liquid circulating through the system is pressurized, some elements work at high temperatures and includes electrical components. • Only qualified and trained service personnel should install, start up and do maintenance tasks on this air conditioning equipment. • During every visit follow recommendations from the Installation Operation Maintenance manual, pay attention to the indications shown on unit’s stickers and take safety precautions according general legislation. • Strictly follow all safety codes. • Use safety glasses, work gloves and any other work safety accessory. • For brazing operations use a quenching cloth and have a fire extinguisher at a close distance in case of

emergencies.

• When repairing the unit use only original spare parts and install them properly in the same place and position where the old parts were located. • Do not install the unit in explosive atmosphere.

PRECAUTIONS OF THE HIDRONIC KIT WITH ELECTRIC RESITANCE (OPTIONAL)

SAFETY PRECAUTIONS

Before starting installation, service or maintenance turn off system’s main power

switch to avoid electrical shock which may result in personal injury.

Before start-up, check that the water tank is completely full and the installation is

purged.

It is recommended that in the event that the water installation material is different than the material supplied by the chiller, add an electrochemical

filter to prevent the possible problem of galvanic couple

WARNING!

WARNING!

WARNING!


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EKWXBA compact units are reversible air cooled water / heat water production and designed for its installation outdoor. It is provided with R-410A refrigerant charge already for its installation. These units are manufactured under strict quality control throughout the whole process and when they are finished they are tested in the factory, checking the correct working of all their components.

Remote control system

MCX control system: Models from 1601.2 to 4501.2

- The control is composed of a user interface and an electronic

board.

- Power supply 20/30 Vdc – 24 Vac.

- Panel mounting type.

- Screen with display that allows the inputs and outputs to be

visualized.

- Operating mode: 2 compressors, cooling only and heat pump.

- Defrosting by pressure transducers. - Management of water circulating pump and hydraulic module.

- Clock programming. - Programmable controller with 3 access levels: User, Maintenance and Manufacturer.

Main functions of the control system

- Regulates water temperature

- Service hour counter for compressors and water pumps (optional)

- Intake and outlet water temperature reading displays, as well as, pressure reading displays in evaporator and condenser stages

- Compressor start timers

- Pressure overload safety protection

- Electronic compressor protection

- External fan protection

- Water flow protection

- Anti-freeze active protection

- Remote ON/OFF

- Remote COOL/HEAT mode toggle

- Condensing and evaporating pressure control by incorporating 2 ventilation stages

- Check valve for cycle reversion (only available for Heat Pump units)

- Anti-frost feature. Anti-frost start and stop settings through pressure readings.

- Anti-frost duration time control.

COMPONENT DESCRIPTIONS

GENERAL CHARACTERISTICS

Compressor

Hermetically sealed, alternative compressor with wide operation limits. Equipped with thermal protection, -any other additional protection is not needed-, it includes its oil charge for the perfect lubrication and internal shock-absorbing system. The compressor is mounted on the base with antivibration supports and it is acoustically isolated, guaranteeing a silent and vibration-free operation. Outdoor coils Coils built with seamless copper tubes and expanded in aluminum fins. They incorporate a distributor with neck and calibrated orifice (nozzle) to improve gas distribution in Cool mode.

Refrigerant-water heat exchanger

Stainless steel plate heat exchanger (AISI 316) welded with a bronze based technique. It’s perfectly isolated with insulating material to avoid thermal exchange with its surroundings. It incorporates a resistor to frost protection mode to avoid dangers of breaking by water freezing in case of lack of water flow.

Motor’s fan

Mounted on a square-based embouchure; with a circular opening, which is ideal for optimal aerodynamic performance of air flow supplied by the fan. Weatherproof completely sealed and permanently lubricated. They consist of aluminum blades designed for low noise, inserted into the outdoor rotor of a high-efficiency motor with IP-54 protection and Class F coil insulation. Internal thermal sensors have built-in for their protection and an external safety grate.

Expansion devices

The unit is equipped with thermostatic expansion valves with MOP on in the inlet of plate heat exchanger for functioning in refrigeration mode. The expansion in the outdoor coil, when necessary (functioning in heating mode), is done through orifice (nozzle).

High pressure pressostat

Security pressostat connected to the compressor output (maximum pressure point) manual reset. Shut off is calibrated to a pressure of 42 bars.

Dehydrator fitler

Bidirectional type filters are mounted in the liquid line. It has a desiccant solid core that minimizes vibration and friction during operation, as well as absorbing the excess moisture and filter possible impurities.

Liquid container It is, basically, a tank to hold the difference of refrigerant charge required by the unit to operate between Cooling/Heating. Check valves

Only in heat pump units to carry out the bypass to the expansion system of the secondary exchange.

Sheet structure

The unit’s structure is weather resistant and it consists of galvanized steel sheet applying an oven-cured painting process by polymerizing paint providing excellent coating to whole set and, especially, in edges and corners. The freestanding base is built with high stiffness steel and the rest of the structure is made of galvanized steel. The design is intended for easy maintenance. The color of the finished set is RAL 1013.


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• The electrical power supply to the unit must be within the 10% of the voltage indicated on the nameplate. Unit start-up at incorrect voltage is not covered by our guarantee. • When making electrical connections always use unit wiring diagram. • Be sure that compressor crankcase heater is energized before unit start. • The installer has to install line protection elements according to local laws. • The interconnecting wires have to be in protection tube or inside groove channel.

APPLICATION LIMITS

The following table shows the application limits of the chillers for the exchangers used:

EkWXA – EkWXBA 1601.2 2001.2 2401.2 2501.2 3001.2 3501.2 4001.2 4501.2

Nominal water flow m3/h 8,3 9,2 11,7 12,3 13,3 16,8 19,0 20,6

Evaporator charge loss KPa 22 24 26 26 32 29 32 38

Mínimum water flow m3/h 5,2 5,8 7,3 7,7 8,3 10,5 11,9 12,9

Maximum water flow m3/h 13,8 15,4 19,5 20,5 22,2 29,1 31,8 34,5

Min. Water volume l 115 129 163 171 185 235 266 288

Coefficient of thermal expansion Water (7-50)ªC

--- 0,01233

Coefficient of thermal expansion Water (7-55)ªC

--- 0,01454

Max water volume (7-50)ºC l 928 1290

Max water volume (7-55)ºC l 787 1094

ELECTRICAL DATA

Before starting any type of operation switch off main power switch.

It is mandatory to install flow switch at the machine water inlet and with previous straight section of 1,5m without changes in cross section to assure the water or fluid is laminar.

Failure to comply with this causes loss of the equipment warranty.

WARNING!

WARNING!


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• It is advisable to examine carefully the unit upon receipt. • Inspect equipment received for damage or missing element. If units are damaged or shipment is incomplete, immediately file the claim with the transport company. (Within the first 48h). • Check if unit nameplate voltage is correct and agrees with local power supply. • In case of detecting any damage or anomaly it is recommended to contact our customer support.

If the unit is to be stored before installation, several precautions must be kept to avoid any damages, corrosion or any other type of deterioration: • Do not store the unit in locations with temperatures over 50ºC and preferably without exposure to direct sunlight. • Minimum storage temperature: -10ºC • Maximum humidity: 90% Moreover it is recommended: - Move it carefully - Avoid placing other objects on the unit (Unless this is done within the overlay limits indicated in the packaging) - Avoid placing the unit with heat shrink protection under the sun, as the pressure of the circuits might assume values that could lead to activation of the safety valves

• Before moving the unit make sure that all units panels are well fixed. • Raise and set down the equipment carefully. • Never tilt the unit more than 15 degrees during transportation (Fig. 2). • When lifting the unit ensure that it is balanced and steady, keep in mind that the heaviest part is where the compressor is installed. • Always transport unit to installation place in original packaging.

RIGGING

STORAGE

INSPECTION UPON ARRIVAL

UNIT RECEPTION


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SERVICE AREA

• Check if construction is able to support unit weight. • Check that the service area is the one indicated for this unit. • Choose a place free of dust and waste. • Consult and respect all regulations concerning installation of air conditioning systems. • Install shock absorbers in all the installation to avoid noise transmission. • Check if sound level direction will not disturb any person.

• Make sure the unit is correctly levelled. • The bed frame should be strong and solid enough to support the weight of the machine. • Assure the drainages work correctly.

Make sure to respect the following measures for the correct operation of the unit.

MODELS 1601.2-3001.2

UNIT SETTLEMENT

INSTALLATION LOCATION


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MODEL 3501.2

MODELS 4001.2-4501.2


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WEIGHT DISTRIBUTION (kg)

MODELS 1601.2-3001.2

KRONO CENTRE OF GRAVITY (cm) WEIGHT DISTRIBUTION (kg)

MODEL X Y P1 P2 P3 P4 Total

1601.2 67,7 90,2 153 97 113 177 540

2001.-2 67,6 90,0 154 98 113 178 543

2401.2 68,7 90,0 166 105 126 199 597

2501.2 68,7 90,0 166 105 126 199 597

3001.2 68,3 89,5 171 107 127 201 606

Electric panel


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MODEL 3501.2

MODELS 4001.2-4501.2



3501.2 65,3 137,3 264 195 200 271 931



4001.2 65,2 137,6 270 200 205 277 952,3

4501.2 63,8 136,0 292 212 208 286 997

Electric panel

Electric panel


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OPTIONALS

MODELS 1601.2-3001.2 (WITH HIDRONIC KIT)



1601.2 73,1 116,1 166 178 247 230 821

2001.-2 73,1 115,8 167 178 247 231 824

2401.2 73,4 114,2 179 186 261 252 878

2501.2 73,1 114,1 181 187 260 252 880

3001.2 73,1 113,6 184 188 261 255 887

Electric panel


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MODELO 3501.2 (WITH HIDRONIC KIT)

MODELOS 4001.2-4501.2 (WITH HIDRONIC KIT)



3501.2 60,4 172,8 325 385 338 285 1333



4001.2 60,5 172,5 331 390 343 290 1354

4501.2 59,6 170,2 352 402 344 301 1399

Electric panel

Electric panel


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• If is necessary to add or recuperate refrigerant 410A always do it in LIQUID phase. Supplying refrigerant in gas or vapor form, by mistake, will result in wrong mixture conditions. • Due to its high pressure and quick evaporation, refrigerant R410A cannot be kept in liquid phase inside charge cylinder because bubbles would form, altering the readings. • The electronic scale is reinforced with a four support-point structure for the weight sensor of the refrigerant bottle. • In addition, it can also be used for any type of refrigerant’s charge. The refrigerant’s charge is carried out

opening and closing the valve manually.

• Immediately repair all refrigerant leaks. • Never overcharge the system. • Never use compressor as vacuum pump. • If during operation will appear symptoms of refrigerant loss is necessary to make leak test. Leak detectors usually employed with CFC and HCFC cannot be used with R410a, due to chlorine in its composition. A leak detector for R134A may be used but the sensibility will be lower (when sensibility is 1 for R134A, it falls to 0,6 for R410A). • To find small leaks, you will need a detector for HCF. Sensibility for R410A is approximately 23 grams per year. • If gas leak is detected is necessary to remove and recuperate complete refrigerant charge. Pressurize system with dry nitrogen. If leakage has been not detected break a vacuum, dehydrate and charge with refrigerant.

Compressors with R410A refrigerant use polyester synthetic oil. Each compressor’s manufacturer

recommends a specific type of oil for its products. The compressor or the system should not be left opened

to atmosphere more than 15 minutes. Synthetic lubricants are used as ester (POE, Polyol Ester) that have

a high solubility with R410A. Since these types of oils are very hygroscopic, more care should be taken

rather than with the conventional ones. Furthermore, when these synthetic oils are mixed with minerals or

alkylbenzene, they deteriorate producing capillary obstruction or failures in the compressor. Do not mix

them under any circumstance.

COMPRESSOR LUBRICANT

REFRIGERANT CHARGE

Never use oxygen to pressurize system or purge lines for leak test. Oxygen reacts violently with oil, which can cause an explosion resulting in damage, personal injury

or death.

If it is necessary to make brazing operation, first fill the circuit with dry nitrogen.

Burning refrigerant 410A results in toxic gas emissions.

WARNING!

WARNING!


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• Start up to be performed by qualified technical people. • Make start-up check list and use similar check up for service and maintenance. Record chilled water inlet and outlet temperatures and pressures, outdoor air temperature, volts and amps of each compressor and fan motor, suction and discharge pressure of each compressor. • Should remind that after four hours of system operation is necessary to clean air filters. • Observe at least 3 cooling cycle operations. • Due to the fact that the unit has frequency converters for compressors and fans, it’s essential that the supply be at a minimum of 300 mA to prevent supply cuts caused by the differential switch.

START UP

• Check if all wires are well tightened. • Check if all panels are firmly secured with screws. • Verify if there is no refrigerant or oil leakage. • Verify if unit is installed on level. • Verify if there is enough space for service and maintenance. • Check if drain holes in unit base are not blocked. • Check if the cranckcase heater of each compressor has been energized at least 24 hours before unit start up. • Check if air filters are clean and correctly mounted. • Check all grills, air diffusers, air ducts and flexible connections. • Be sure that electrical power source agrees with unit nameplate rating. • Check if fans rotate in the right direction

BEFORE START UP


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MCX CONTROL

START UP START MENU

Keypad utility

(UP) By pressing and holding this key for, at least, 3 seconds the unit will start up if it was shutdown or it shuts down if it is running.

(DOWN) By pressing and holding this key, at least, 3 seconds the unit will toggle

between cooling and heating mode. If the unit is running, it needs to stop prior to switching modes and then it must be started up once again.

(ESC) Pressing this key leads to a shortcut to the ALARMS menu.

(RETURN) This key takes the user to the MAIN MENU screen if it is pressed in the START MENU screen. It is also used to enter menus for other selected options.

MAIN MENU Keypad utility

(UP) Used to scroll UP between highlighted options.

(DOWN) Used to scroll DOWN between highlighted options.

(ESC) Returns to the previous screen of a highlighted option.

(RETURN) Advances to the next screen or sublevel of a highlighted option.

ON Starts up the unit using the last settings.

OFF

Shuts off the unit according to the established time parameters.

HEAT/COOL

Toggles between operating modes..


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PASWORD LEVEL There are 3 clearance levels for different parameters or system setting options.

Level L0: User Access, no password required. Level L1: User-Maintenance Access. Level L2: Manufacturer authorized Access ONLY.

INPUTS/ OUTPUTS

DISPLAY “A” DISPLAY “B” ALARMS/ NOTIFICATIONS

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** The MCX controller automatically alternates

water pumps for the next start up cycle, after 24

service hours have been logged, in order to prolong the life of the components.

POSITION ANALOG INPUTS DIGITAL INPUTS ANALOG OUTPUTS

DIGITAL OUTPUTS

1 Intake water temperature.

Differential pressostat / Flow switch

NO OUTPUTS. ONLY when Condensation

Control OPTIONAL Kit

is installed, there is a reading in ANALOG

OUTPUT slot #3.

Compressor 1

2 Outlet water temperature.

Thermal protection Compressor 1.

Compressor 2

3 Cond./ Evap. pressure

Cool/Heat Thermal protection

Compressor 2.

4 way valve (ONLY available with Heat

Pump units)

4 Evap./ Cond. pressure

Cool/Heat External fan termal

sensors Anti-freeze heater

5 Outdoor exchanger

temperature 1

Safetu pressostat. High Pressure

readings.

Water pump for 1-pump KIT. (No Kit,

shows no output. If 2-

pump Kit is installed, outputs are shown in

#9 and #10 slots.)

6 Outdoor exchanger

temperature 1 Remote Start-Stop

External fans ALL set to lowest speed

setting.

7 --- Remote Cool/Heat

selection.

ONE fan in high speed, the rest in the

lowest.

8 --- Second SETPOINT. ALL fans in the high

speed setting

9 --- Thermal protection

for Water pump 1 (for 2-pump Kit).

---

10 --- Thermal protection

for Water pump 2 (for 2-pump Kit).

---


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►SYSTEM PARAMETERS

Display screens Display screen “A”. Select the Reading to be shown in Display screen A when the unit is running. By default, the reading shown on Display screen A when the unit is shut down is “OFF”.. Display screen “B”. Select the Reading to be shown in Display screen B when the unit is running.

Password Displays Installer-Maintenance password.

Setup System ON/OFF. Indicates wether the unit is running (ON) or if it is shutdown (OFF), it also allows starting up or shutting down the unit by selecting ON/OFF. Restart After Disconnection Mode. Following a sudden power outage, this indicates the operational mode for restart. System HEAT / COOL Indicates current operating mode HEAT/COOL and, it also allows switching between modes. If the unit is running, it stops before switching operating modes and then it is started up in the new mode. Scheduler enable. Enables/Disables Programming Mode.

►REGULATION PARAMETERS

Configuration Temperature Regulation Entry This is used to tell the system whether regulation will be applied to IN or OUT water temperature. Calibration of the Regulation Probes. Adjusts probe regulation values in the range between -99,9 and 99,9.

Setpoint. Cooling Setpoint Temperature. Sets the value of the operating Cooling Setpoint temperature in ºC, by default this value is set to 7ºC. Values can range between 6,0 and up to 17,0ºC. Lower Limit Setpoint Temperature. This is used to set the lowest limit of the Setpoint temperature in Cooling more. By default this value is 6,0ºC. High Limit Setpoint Temperature. This is used to set the highest limit of the Setpoint temperature in Cooling more. By default this value is 17,0ºC. Heating Setpoint Temperature. Sets the value of the operating Cooling Setpoint temperature in ºC, by default this value is set to 45ºC. Values can range between 35,0 and up to 55,0ºC. Lower Limit Setpoint Temperature. This is used to set the lowest limit of the Setpoint temperature in Heating more. By default this value is 35,0ºC. High Limit Setpoint Temperature. This is used to set the highest limit of the Setpoint temperature in Heating more. By default this value is 55,0ºC. ►COMPRESSORS

Activation

Activation of compressor 1 Activates or disables compressor 1. Activation of compressor 2 Activates or disables compressor 2.

OFF: No reading shown. IdOF: ON/OFF state. Set: Setpoint value for current operating mode. reg: (Varies according to the model of the unit) AI1: Intake water temperature. (Default setting)

AI2: Outlet water temperature.

OFF: No reading shown. IdOF: ON/OFF state. Set: Setpoint value for current operating mode. (Default setting) reg: (Varies according to the model of the unit) AI1: Intake water temperature.

AI2: Outlet water temperature

OFF: The unit is set to Standby or OFF mode. ON: The unit starts up. EQUA: The unit resumes operation under the same settings as the last time it was running before loss of power.

AI1: Regulation of INTAKE water.

AI2: Regulation of OUTLET water.


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►ALARMS

CÓDE DESCRIPTION TYPE OF REBOOT COMPRESSOR WATER PUMP

EXTERNAL FAN ANTI-FREEZE

HEATER

A03 Evaporator flow swich Manual OFF OFF OFF OFF

A09 High temperature Notification - - - -

A10 Evaporator pump service time limits

exceeded Notification - - - -

A11 Evaporator pump 2 service time limits


A12 Condenser fan service time limits


A51 Condenser fans thermal protection

C1 Automatic OFF - OFF OFF

A61 Maximum service hours for

compressor 1 exceeded Notification - - - -

A62 Maximum service hours for

compressor 2 exceeded Notification - - - -

AC1 Compressor 1 thermal protection Manual OFF - - -

AC2 Compressor 2 thermal protection Manual OFF - - -

AE1 Anti-freeze Power shut-off OFF ON - ON

AH0 General high water pressure Manual OFF - - -

AP0 General evaporator pump Manual OFF OFF OFF OFF

AP1 Thermal protection water pump 1 Automatic - OFF - -

AP2 Thermal protection water pump 2 Automatic - OFF - -

AP9 Operation reserved pump Notification - - - -

A13 Maximum anti-frost time exceeded Notification - - - -

AL0 General low water pressure

protection 3 times within 1 hour OFF - - -

A50 General fan thermal protection Automatic OFF - OFF -

A7A Intake water probe Automatic OFF OFF OFF OFF

A7B Outlet water probe Automatic OFF OFF OFF OFF

A7V Intake transducer probe Automatic OFF OFF OFF OFF

A7G Discharge tansducer probe Automatic OFF OFF OFF OFF


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It is advisable to do maintenance works every 1.000 operating hours as well as at the beginning of each cooling season. • Coils: At least once a year, clean condenser coils with water and detergent, then dry with air at a pressure of 600 KPa. Never clean with wire brush. • Drainage system: Verify condition and good operation of the drainage tray and siphon. • Refrigeration circuit: Check for oil refrigerant leaks, noises or system’s vibrations. Take measurements of temperatures and pressures of components and record them on the maintenance form. • Electrical circuit: Make sure that all electrical connections -wires, contactors and terminals- are properly tight. Record the readings for volts and amperes of each compressor and fan motor. Verify the starting current. Check the good operation of all relays, pressure switches and phase sequence relay of Scroll compressor.

MAINTENANCE

Before performing service or maintenance system’s operations turn off main power switch to avoid personal injury and put lock on power switch to avoid that any person

not connected with maintenance technical can switch on electrical supply.

WARNING!


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Causes Safety data: R410A

Toxicity Low

Contact with skin

R410A vapors can irritate the skin and eyes. In liquid form, it can freeze skin on contact. If

contact with skin occurs, flush the exposed area with lukewarm water until all of the chemical is removed. If there is evidence of frostbite, bathe in lukewarm water. Take off contaminated clothes carefully as they could be adhered to the skin in case of frostbite

burns. If there are irritation symptoms or blistering get medical attention.

Contact with eyes

If contact with eyes occurs, immediately flush with large amounts of lukewarm water for at least

15 minutes, lifting eyelids occasionally to facilitate irrigation. Seek medical attention as soon as possible.

Ingestion

Very unlikely - should something happen, it will cause frost burns. Do not induce vomiting. Only if

the patient is conscious, wash out mouth with water and give some 250 ml of water to drink. Seek medical attention immediately.

Inhalation

Inhalation of the R410A vapor may cause irritation. Vapor inhalation at high concentrations may

result in asphyxiation or the heart may become sensitized, causing cardiac arrhythmia. When concentration of R410A reach levels which reduce oxygen to 14-16% by displacement, symptoms of asphyxiation will occur. An individual exposed to high concentrations of R410A

must be given medical attention immediately. Adequate ventilation must be provided at all times.

Recommendations

Semiotics or support therapy is recommended. Cardiac sensitisation has been observed that, in

the presence of circulating catecholamines such as adrenalin, may cause cardiac arrhythmia and accordingly, in case of exposure to high concentrations, cardiac arrest.

Prolonged exposure

R410A: a study on the effects of exposure to 50,000 ppm during the whole life of rats has

identified the development of benign testicle tumour. This situation should therefore be negligible for personnel exposed to concentrations equal to or lower than professional levels.

Professional levels R410A: Recommended threshold: 1000 ppm v/v - 8 hours TWA.

Stability R410A: without specification

Conditions to avoid Do not use in the presence of high temperatures, flames, burning surfaces and excess humidity.

Hazardous reactions Contact with certain red-hot metals may result in exothermic or explosive reactions and yield toxic and/or corrosive decomposition products.

Incompatible substances: magnesium and and alloys with more than 2% of magnesium.

Hazardous decomposition products R410A: Halogen acids produced by thermal decomposition and hydrolysis.

General precautions

Avoid inhalation of high concentrations of vapour. Atmospheric concentrations should be minimized and kept as low as reasonably practicable below the occupational exposure limit. The vapour is heavier than air and collects at low level in confined spaces. Exhaust wind at the lowest

levels.

Respiratory protection When a question about the atmospheric concentration appears, breathing apparatus approved by the Board of Health and Safety, of the independent type or the type of feeding tube should be

used .

Stockage Keep the bottles in a cool dry place, away from where there may be risk of fire, direct sunlight

and sources of heat such as p. eg. radiators. Keep temperatures below 50 ° C.

Protective clothing Wear overalls, impervious gloves and eye / face protection

How to act in case of spill / accidental release

Make sure to wear protective clothing and breathing apparatus. If not dangerous, isolate the

source of the leak. Allow small spillages to be evaporated always there is adequate ventilation. Large Spills: Ventilate the area well. Contain spill with sand, earth or other absorbent material. Prevent liquid from entering drains, sewers, basements and work pits since the vapor may create

a suffocating atmosphere.

Deleting The best is to recover the product and recycle it . If it is not possible, it must be eliminated in

authorized facilities that are equipped to absorb and neutralize acids and toxic agents.

Firefighting Files R410A: Is not flammable under atmospheric conditions.

Carboys The containers exposed to fire should be kept cool by spraying with water, otherwise cylinders may explode if they get too hot.

Fighting Protective Equipment fire In case of fire, breathing equipment and protective clothing must be used.

APPENDIX: SAFETY CHARGE R410A

We reserve the right to make modifications withput prior notice. This manual is a translation from the original document in Spanish.

HIPLUS AIRE ACONDICIONADO S.L. Masia Torrents, 2

Tel. +34 93 893 49 12

Fax. +34 93 893 96 15

08800 Vilanova i la Geltrú

Barcelona, Spain

www.hitecsa.com

EKWXA │EKWXBA O - Hitecsa.com · It is provided with R-410A refrigerant charge already for ... - Check valve for cycle ... The unit is equipped with thermostatic expansion valves

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