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Summary of Contents for Hitecsa MINI KRONO 2-i EKWXBAi Series
- Page 1 EKWXBAi Heat Pump WATER CHILLERS WITH AXIAL FANS Range: MINI KRONO INVERTER Models: 18i │22i │27i Cooling capacities: from 18.0 kW to 26.3 kW Heating capacities: from 21.2 kW to 31.2 kW IOM_EKWXBAi_18ia27i_207847_190202_EN...
- Page 2 Thank you for trusting the Hitecsa Products. Our company has been offering the market an extended range of specialized equipment for air conditioning and cooling installations for over 35 years. Our approach is based on efficiency, flexibility and on practical solutions.
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Page 3: Table Of Contents
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS EKWXBAi - MINI KRONO INVERTER INDEX INDEX ............................1 INTRODUCTION .......................... 3 Name Plate ........................4 REGULATIONS AND CERTIFICATIONS ..................5 RULES AND REGULATIONS: ..................5 SAFETY INSTRUCTIONS ......................6 NOMENCLATURE ........................8 KRONO 2 HE RANGE ......................... - Page 4 EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS EKWXBAi - MINI KRONO INVERTER OPERATION ..........................19 START-UP ..........................19 ELECTRICAL SET-UP ......................19 HYDRONIC SYSTEM ......................19 VENTILATION SYSTEM ....................... 19 THERMOSTAT AND CONTROL ..................20 Mini pGD or pGD1 thermostat ..................20 KEYBOARD ........................
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Page 5: Introduction
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS INTRODUCTION Purpose of this Manual The present manual together with any other technical document such as refrigeration or hydraulic lines drawings and electrical diagrams among others have been issued to provide the necessary information for installation, start-up and maintenance of the unit. -
Page 6: Name Plate
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS INTRODUCTION Periodic Inspections and Maintenance Carry out periodic inspections to detect possible damaged or broken parts. If these parts are not repaired, people injuries or material damages could be caused. Disconnect the power supply of the unit before carrying out any maintenance operation. -
Page 7: Regulations And Certifications
CE MARKING: Our products are CE marked according to the essential requirements of the applicable EC directives and their last modifications and comply with the national legislation of each country. EUROVENT CERTIFICATION: HITECSA participates in the EUROVENT Certification program. Please check which models are certified on the web. -
Page 8: Safety Instructions
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS SAFETY INSTRUCTIONS Before starting any installation, service or maintenance operation, turn the main power switch off in order to avoid electrical discharges that may cause personal injuries. Should it be necessary to open the electrical box in order to get inside the equipment, it is COMPULSORY to plug the main power cable out prior to this operation. - Page 9 EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS SAFETY INSTRUCTIONS ATTENTION! Only qualified and trained service staff (technical service) is authorized to carry out installation, commissioning and maintenance. Unqualified personnel will carry out basic tasks only such as cleaning and replacement of filters, or filter cleaning (excluding the refrigerant filters), etc…...
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Page 10: Nomenclature
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS NOMENCLATURE E K W X B A - 2 7 i MINI KRONO INVERTER Range Water Chiller KRONO – KRONO Internal water exchanger (plates) Air condensed with axial fan Heat pump R410A Inverter compressor Maximum heating capacity (kW) -
Page 11: Technical Specifications
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS TECHNICAL SPECIFICATIONS MINI KRONO INVERTER RANGE CAPACITIES COOLING CAPACITY (1) AC application = Water temperature 12/7°C – Air temp. 35°C Maximum cooling CAPACITY 18.0 21.7 26.3 Total Absorbed Power 10.3 13.2 2.06 2.10 2.00... - Page 12 EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS TECHNICAL SPECIFICATIONS SERIE MINI KRONO INVERTER OUTDOOR EXCHANGER Type COIL of finned copper tubes Number OUTDOOR FAN Type AXIAL with EC motor Total number m3/h Maximum air flow 19500 18500 18500 Available static pressure Nominal capacity 1.95...
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Page 13: Dimensions
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS TECHNICAL SPECIFICATIONS DIMENSIONS 1. External probe 2. Electrical box 3. Main switch 4. Electrical connection inlet 5. Water outlet – Victaulic connection 1 1/2” 6. Water inlet – Victaulic connection 1 1/2” IOM_EKWXBAi_18ia27i_207847_190202_EN... -
Page 14: Refrigeration Scheme
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS TECHNICAL SPECIFICATIONS REFRIGERATION SCHEME - Circulating pump Compressor. - High pressure switch 4-way valve. - High pressure sensor Electronic expansion valve. - Lower pressure sensor Check valve. - Discharge temperature Filter. - Outdoor temperature Liquid tank. -
Page 15: Transport
Verify the correct voltage of the nameplate and make sure it is in accordance with local power supply. In case of any flaw or anomaly detected, please contact HITECSA. LIFTING AND HANDLING Before moving the unit, make sure that all panels are fixed properly. -
Page 16: Installation
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS INSTALLATION INSTALLATION SITE Consult and respect the rules and local regulations which regulate the installation of air conditioning systems. Choose a site without dust and debris. Respect the appropriate service area for the equipment that is to be installed. ... -
Page 17: Installation Of Water Pipes
5 Ø (inlet) horizontal length without section changes to ensure that the water/liquid flow regime is similar. In case of using flow switches that have not been supplied by HITECSA, please follow the manufacturer’s instructions making sure that the above mentioned lengths are not reduced. -
Page 18: Installation Of Water Pipes
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS INSTALLATION INSTALLATION OF WATER PIPES RISK OF FROST If the unit or the water installation are exposed to temperatures around 4°C it is necessary to take the appropriate measures against the risk of frost. For example: ... -
Page 19: Electrical Installation
The unit power supply should be within 10% of volts indicated on the unit nameplate. Damage caused by the start-up of the unit in an incorrect voltage line is not covered by the Hitecsa’s warranty. Always refer to the unit wiring diagram when making electrical connections. -
Page 20: Connection Of The Pgd Controller
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS INSTALLATION CONNECTION OF THE pGD CONTROLLER The mini pGD terminal is the standard user control display (pGD1 available as an option). Connection to the central unit’s board (µPC) with a 6 wire-telephone cable. For distances longer than 50 m and shorter than 200 m intersperse with TCONN bypass (through 2 shielded and twisted pairs). -
Page 21: Operation
The power supply of the unit must comply with the data stated on the serial plate. Damage caused by the start-up of the unit with an incorrect voltage line will not covered by Hitecsa’s warranty. The unit must not be supplied with any other voltage than that indicated on the name plate. The power supply to the unit must be within 5% of the voltage indicated on the serial plate. -
Page 22: Thermostat And Control
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS OPERATION THERMOSTAT AND CONTROL Mini pGD or pGD1 thermostat KEYBOARD 6 keys with different signs depending on the terminal model pGD1 or min pGD. Press for display of the alarms on the screen. When the key is highlighted in red (only ALARM KEY: pGD1 control), there is one alarm on the unit. -
Page 23: Main Menu
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS OPERATION - pGD1 or Mini pGD THERMOSTAT MAIN MENU Press the “Program” key to enter the main menu LCD DISPLAY DESCRIPTION A. ON/OFF Start-up menu B. Setpoint Setpoint change C. Clock / time Time schedule schedule Configuration and display of the inputs and outputs... -
Page 24: Date And Hour Setting
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS OPERATION - pGD1 or Mini pGD THERMOSTAT Date and hour setting Go to the main menu Select the C menu. Clock/Scheduler Modify Day, Date and Hour Enable or disable DST (Daylight Saving Time). By default, commonly stablished by the EU: Last Sunday of March move the clock forward one hour (from 02:00 to 03:00) and last Sunday of October set back one hour (form 03:00 to 02:00). -
Page 25: Configuration Of Inputs And Outputs
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS OPERATION - pGD1 or Mini pGD THERMOSTAT Configuration of Inputs and Outputs Control Board µPC POSITION ANALOG INPUTS DIGITAL INPUTS ANALOG OUTPUTS DIGITAL OUTPUTS Thermal protection Water Discharge temperature External fan ON Fancoils pump Inlet water temperature... -
Page 26: Alarms
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS OPERATION - pGD1 or Mini pGD THERMOSTAT Alarms All the displayed alarms (apart from the WARNING type notifications) will make the unit stop. Reset of the alarms: This button is illuminated when an alarm is activated. Press that button to stop the sound alarm. By pressing a second time on that button, the alarm will be deleted if the problem has been solved. - Page 27 EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS OPERATION - pGD1 or Mini pGD THERMOSTAT Alarms Reset Relay Description Possible cause Alarm message Alarms Power+ del Power+High Alarms Power+ Power+ High The Drive temperature has exceeded the Manual temperature temperature maximum authorized level.
- Page 28 EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS OPERATION - pGD1 or Mini pGD THERMOSTAT Alarms Reset Relay Description Possible cause Alarm message - Cooling mode (insufficient air flow) – Low pressure Light Auto 5 r. Transducer Low pressure Heating mode (insufficient water flow) Transducer Low Pressure (5 - Cooling mode (insufficient air flow) –...
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Page 29: Ec Motor Fans
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS OPERATION EC MOTOR FANS TROUBLE SHOOTING Possible cause Solution Type of error Failure line voltage. Failure of one Check line voltage. phase. Under – or overvoltage. Earth fault. Check motor connection and line voltage. Short circuit winding. -
Page 30: Rotation Caused By Air Flow In The Wrong Direction
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS OPERATION - EC motor fan Status Out with flash code LED Code Alarm relay * Cause (Explanation) Open No line voltage Closed Normal operation without fault Closed No enable = OFF Closed Active temperature management Open... -
Page 31: Maintenance
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS MAINTENANCE WARNING! Before completing any service or maintenance operation, turn the main power switch off to avoid any personal injuries. Lock it so that nobody else than a qualified technician can switch it on. Before opening the electrical panel and having access to the inside of the machine, it is MANDATORY to disconnect the power supply hose of the machine which MUST BE FREE OF VOLTAGE for this operation. -
Page 32: Maintenance Of The Ec Fan
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS MAINTENANCE MAINTENANCE OF THE EC FAN Fans: Check the direction of rotation of the fans, verify their carriers. Check the status and tension of the transmission belt, at least twice the first month of operation, and then every 1000 hours of operation. The motors and the fans do not require additional lubrication. -
Page 33: Refrigerant Charging
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS MAINTENANCE REFRIGERANT CHARGING WARNING! Never use oxygen to pressurize the system or purge lines for leak test. Oxygen reacts violently with oil, which may entail an explosion that could lead to damages, personal injury or event death. -
Page 34: Options
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS OPTIONS OPTIONS – Fitted from factory ○ ○ ○ Axial variable speed fans with EC motor. ● ● ● Axial variable speed fans with EC motor and available pressure. ● ● ●... -
Page 35: Appendix: Safety Data R410A
EKWXBAi – MINI KRONO REVERSIBLE WATER CHILLERS AXIAL FANS APPENDIX: SAFETY DATA R410A REFRIGERANT DATA SAFETY DATA: R410A Toxicity R410 A vapours can irritate the skin and eyes. In liquid form it can freeze skin on contact. If contact with skin occurs, Contact with Skin flush the exposed area with lukewarm water until all of the chemical is removed. - Page 36 Subject to modifications without prior notification.
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