Hitecsa EKWXBA HE 38.2 Installation, Operation & Maintenance Manual
Hitecsa EKWXBA HE 38.2 Installation, Operation & Maintenance Manual

Hitecsa EKWXBA HE 38.2 Installation, Operation & Maintenance Manual

Water chillers – axial fans
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EKWXBA HE
Heat Pump
WATER CHILLERS – AXIAL FANS
38.2 │44.2 │47.2 │55.2 │59.2 │67.2 │75.2 │95.2 │109.2 │121.4 │132.4 │171.4│193.4 │207.4
Models:
Cooling capacities:
from 37.9 kW to 206.5 kW
Heat capacities:
from 42.3 kW to 246.8 kW
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN

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Summary of Contents for Hitecsa EKWXBA HE 38.2

  • Page 1 EKWXBA HE Heat Pump WATER CHILLERS – AXIAL FANS 38.2 │44.2 │47.2 │55.2 │59.2 │67.2 │75.2 │95.2 │109.2 │121.4 │132.4 │171.4│193.4 │207.4 Models: Cooling capacities: from 37.9 kW to 206.5 kW Heat capacities: from 42.3 kW to 246.8 kW IOM_EKWXBA HE_38.2a207.4_207810_190100_EN...
  • Page 2 Thank you for trusting the Hitecsa Products. Our company has been offering the market an extended range of specialized units for air conditioning and cooling installations for over 35 years. Our approach is based on efficiency, adaptability, usability and practical solutions.
  • Page 3: Table Of Contents

    Risk of frost ....................... 29 Glycol additions ...................... 29 REFRIGERATION DIAGRAM ..................30 EKWXBA HE 38.2 to 67.2..................30 EKWXBA HE - 75.2 to 109.2 ................... 30 EKWXBA HE - 121.4 to 132.4 .................. 31 EKWXBA HE - 171.4 to 207.4 .................. 32 ELECTRICAL DATA .......................
  • Page 4 EKWXBA HE WATER CHILLERS AXIAL FANS ALARMS. Display and reset ..................44 Time Programming ....................44 Input and output ......................45 MAINTENANCE........................48 MAINTENANCE AND CLEANING .................. 48 REPAIRING OPERATIONS ................... 49 LUBRICANT ........................49 REFRIGERANT CHARGE ....................50 OPTIONS / ACCESSORIES ....................51 Technical specifications of equipments with options ..........
  • Page 5: Introduction

    EKWXBA HE WATER CHILLERS AXIAL FANS INTRODUCTION Purpose of this Manual This manual and any other instructive document attached as refrigeration lines design, electrical diagrams, etc. have been written to allow a correct installation, commissioning and maintenance of the unit. Therefore it is essential to read the instructions with due attention. Verify that all the necessary information for the correct installation of the system is included in the manuals supplied with this unit and/or the rest of the indoor units, accessories, etc.
  • Page 6 EKWXBA HE WATER CHILLERS AXIAL FANS INTRODUCTION Periodic Inspections and Maintenance Carry out periodic inspections to detect possible damaged or broken pieces. If they are not repaired it could cause damage to people or stuff. Before executing any maintenance operation, cut off the unit power supply.
  • Page 7 EKWXBA HE WATER CHILLERS AXIAL FANS INTRODUCTION Name Plate Description of the name plate attached to the unit. Name of the Unit. Year of manufacture. 18. Frequency of the electrical network to which the Unit code. machine must be connected. Serial Number.
  • Page 8: Regulations And Certifications

    CE MARKING: Our machines have got the CE mark, in conformity with the essential requirements of the applicable EC directives and their last modifications as well as with the national legislation of each country. EUROVENT CERTIFICATION: HITECSA participates in the EUROVENT Certification program. Check certified products on the web.
  • Page 9: Safety Precautions

    EKWXBA HE WATER CHILLERS AXIAL FANS SAFETY PRECAUTIONS Before starting any installation, service or maintenance operation, turn off the main power switch in order to avoid electrical shock that may cause personal damages. In case of folding electrical panels, before folding them up in order to access to the interior of the machine, it is MANDATORY to disconnect the power supply hose from the electrical voltage, THE LINE MUST ALWAYS BE FREE OF VOLTAGE for this operation.
  • Page 10 EKWXBA HE WATER CHILLERS AXIAL FANS SAFETY PRECAUTIONS ATTENTION!  Only qualified and trained service staff (technical service) must make the installation, commissioning and carry out maintenance works. Unqualified personnel can only make basic tasks such as cleaning and replacement of filters, etc.
  • Page 11: Technical Specifications

    EKWXBA HE WATER CHILLERS AXIAL FANS TECHNICAL SPECIFICATIONS 38.2 44.2 47.2 55.2 59.2 67.2 EKWXBA HE CAPACITIES COOLING CAPACITY (1 ) Cooling capacity 37.9 44.1 47.3 55.4 59.3 66.6 Total power input 14.5 16.9 19.2 21.3 24.1 28.0 Water flow m3/h 10.3 11.3...
  • Page 12 EKWXBA HE WATER CHILLERS AXIAL FANS TECHNICAL SPECIFICATIONS EKWXBA HE 38.2 44.2 47.2 55.2 59.2 67.2 ELECTRICAL DATA Power supply V / ~/Hz 400/3+N/50 Max. current Start-up current REFRIGERANT Number of circuits Gas type R-410A Global Warming Potential (GWP) 2088 Total refrigerant charge (EKWXB without options) 11.1 11.2...
  • Page 13 EKWXBA HE WATER CHILLERS AXIAL FANS TECHNICAL SPECIFICATIONS 75.2 95.2 109.2 EKWXBA HE CAPACITIES COOLING CAPACITY (1 ) Cooling capacity 75.3 96.6 115.5 Total power input 26.2 35.6 45.0 Water flow m3/h 13.0 17.0 19.4 Available static pressure 2.87 2.71 2.57 SEER 4.10...
  • Page 14 EKWXBA HE WATER CHILLERS AXIAL FANS TECHNICAL SPECIFICATIONS EKWXBA HE 75.2 95.2 109.2 ELECTRICAL DATA Power supply V / ~/Hz 400/3+N/50 Max current Start-up current REFRIGERANT Number of circuits Gas type R-410A Global Warming Potential (GWP) 2088 Total refrigerant charge 18.0 22.5 23.0...
  • Page 15 EKWXBA HE WATER CHILLERS AXIAL FANS TECHNICAL SPECIFICATIONS 121.4 132.4 171.4 193.4 207.4 EKWXBA HE CAPACITIES COOLING CAPACITY (1 ) Cooling capacity 120.6 131.5 171.3 193.3 206.5 Total power input 45.4 50.6 62.4 71.7 79.9 Water flow m3/h 20.4 22.3 29.1 32.8 35.1...
  • Page 16 EKWXBA HE WATER CHILLERS AXIAL FANS TECHNICAL SPECIFICATIONS EKWXBA HE 121.4 132.4 171.4 193.4 207.4 ELECTRICAL DATA Power supply V / ~/Hz 400/3+N/50 Max current Start-up current REFRIGERANT Number of circuits Gas type R-410A Global Warming Potential (GWP) 2088 Total refrigerant charge 21.5 x 2 23 x 2 23.5 x 2...
  • Page 17: Transport & Reception

     Verify the correct voltage of the nameplate and make sure it is in accordance with the local power supply.  In case of any flaw or anomaly detected, please contact HITECSA. RIGGING  Before moving the unit make sure that all the panels are well fixed.
  • Page 18: Installation

    EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION DIMENSIONS Models 38.2 - 67.2 Unit with buffer tank Water inlet Ø 2” Water outlet Ø 2” Electrical panel board Main switch Power supply input IOM_EKWXBA HE_38.2a207.4_207810_190100_EN...
  • Page 19: Model 75.2

    EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION DIMENSIONS Model 75.2 1. Water inlet Ø 2” 2. Water outlet Ø 2” 3. Electrical panel board 4. Main switch 5. Power supply input Buffer tank (as an option) Unit with buffer tank (as an option) IOM_EKWXBA HE_38.2a207.4_207810_190100_EN...
  • Page 20: Models 95.2 - 109.2

    EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION DIMENSIONS Models 95.2 – 109.2 1. Water inlet Ø 2” 2. Water outlet Ø 2” 3. Electrical panel board 4. Main switch 5. Power supply input Buffer tank (as an option) IOM_EKWXBA HE_38.2a207.4_207810_190100_EN...
  • Page 21: Models 121.4 - 132.4

    EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION DIMENSIONS Models 121.4 – 132.4 1. Water inlet Ø 2” 2. Water outlet Ø 2” 3. Electrical panel board 4. Main switch 5. Power supply input 6. Power supply input (option) 7. Water inlet with buffer tank Ø 2” IOM_EKWXBA HE_38.2a207.4_207810_190100_EN...
  • Page 22: Models 171.4

    EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION DIMENSIONS Models 171.4 Water inlet Ø 3” Water outlet Ø 3” Electrical panel board Main switch Power supply input Power supply input option Water inlet with buffer tank Ø 3” IOM_EKWXBA HE_38.2a207.4_207810_190100_EN...
  • Page 23: Models 193.4 - 207.4

    EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION DIMENSIONS Models 193.4 – 207.4 Water inlet Ø 3” Water outlet Ø 3” 10. Electrical panel board 11. Main switch 12. Power supply input 13. Power supply input option 14. Water inlet with buffer tank Ø 3” IOM_EKWXBA HE_38.2a207.4_207810_190100_EN...
  • Page 24: Installation Site

    EKWXBA HE 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 25 EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION SERVICE AREA Model 75.2 Models 95.2 – 109.2 IOM_EKWXBA HE_38.2a207.4_207810_190100_EN...
  • Page 26 EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION SERVICE AREA Models 121.4 – 171.4 Models 193.4 – 207.4 IOM_EKWXBA HE_38.2a207.4_207810_190100_EN...
  • Page 27: Unit Settlement

    EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION UNIT SETTLEMENT  Make sure that the unit is correctly levelled.  The concrete basement must be strong enough to support the weight of the unit. Weight distribution Models 38.2 - 67.2 WEIGHT DISTRIBUTION (kg) MODEL Total 38.2...
  • Page 28 EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION UNIT SETTLEMENT Models 121.4 – 171.4 WEIGHT DISTRIBUTION (kg) MODEL R1 R2 R3 R6 R7 R8 TOTAL 121.4 196 212 197 183 186 200 233 215 1621 132.4 209 226 211 196 199 214 249 230 1733 171.4 225 243 227 211 214 230 268 247...
  • Page 29: Installation Of Water Pipes

    (inlet) and 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 30: Refrigeration Diagram

    EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION REFRIGERATION DIAGRAM EKWXBA HE 38.2 to 67.2 EKWXBA HE - 75.2 to 109.2 IOM_EKWXBA HE_38.2a207.4_207810_190100_EN...
  • Page 31: Ekwxba He - 121.4 To 132.4

    EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION REFRIGERATION DIAGRAM EKWXBA HE - 121.4 to 132.4 LEGEND COMPRESSOR WATER CIRCULATING PUMP 4-WAY VALVE EEV. ELECTRONIC EXPANSION VALVE EXPANSION VALVE HIGH PRESSURE SWITCH CHECK VALVE PRESSURE TRANSMITTER BIDIRECTIONAL FILTER Pur. AIR DRAIN LIQUID TANK TAC.
  • Page 32: Ekwxba He - 171.4 To 207.4

    EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION REFRIGERATION DIAGRAM EKWXBA HE - 171.4 to 207.4 LEGEND 1. COMPRESSOR WATER CIRCULATING PUMP 2. 4-WAY VALVE EEV. ELECTRONIC EXPANSION VALVE 3. EXPANSION VALVE HIGH PRESSURE SWITCH 4. CHECK VALVE PRESSURE TRANSMITTER 5. BIFLOW FILTER Pur.
  • Page 33: Electrical Data

     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 34: Installation Limits

    EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION Installation limits The Maximum volume of water depends on the expansion tank and the max.-min. operating temperature. 38.2 44.2 47.2 55.2 59.2 67.2 75.2 95.2 109.2 OPERATION LIMITS Minimum water flow m³/ h 11.9 13.6 Maximum water flow...
  • Page 35: Operation Limits

    EKWXBA HE WATER CHILLERS AXIAL FANS OPERATION LIMITS COOLING MODE HEATING MODE IOM_EKWXBA HE_38.2a207.4_207810_190100_EN...
  • Page 36: Operation

    EKWXBA HE WATER CHILLERS AXIAL FANS OPERATION BEFORE START-UP  Make sure that all the electrical connections are properly tight.  Make sure that the panels are firmly secured with screws.  Check that there is no leakage of oil or refrigerant. ...
  • Page 37: Thermostat And Control

    EKWXBA HE WATER CHILLERS AXIAL FANS OPERATION THERMOSTAT AND CONTROL MODELS 38.2 - 109.2: CONTROL MCX08  The control comprises a user interface and an electronic board.  Power supply 20/30 Vdc – 24 Vac.  Mounting in CARRIL DIN. ...
  • Page 38: Models 121.4 - 207.4: Mcx15 Control

    EKWXBA HE WATER CHILLERS AXIAL FANS OPERATION THERMOSTAT & CONTROL MODELS 121.4 – 207.4: MCX15 CONTROL  The control comprises a user interface and an electronic board.  Rail mounting type.  Screen with display to show inputs and outputs. ...
  • Page 39: Mcx Controller Operation

    EKWXBA HE WATER CHILLERS AXIAL FANS OPERATION THERMOSTAT AND CONTROL MCX controller operation START The control shows the following display when it starts: NOTE: After a power shut-down the controller will start at the same On or Off level where it was before the power failure and in the operation mode given by the Cooling/Heating digital input.
  • Page 40 EKWXBA HE WATER CHILLERS AXIAL FANS OPERATION THERMOSTAT AND CONTROL MCX controller operation Keyboard operation: (UP) By pressing and holding this key for at least 3 seconds the unit will start up if it was shut down or it will stop if it was running. (DOWN) By pressing and holding this key for at least 3 seconds the unit will toggle between the cooling and the heating mode.
  • Page 41 Level L0: Access for the user and without access code or password. Level L1: Access for the Installer-Maintainer of the unit (1996). Level L2. L3: Exclusive access for the Technical Service of HITECSA. START UP Start. The unit starts in the selected previous mode.
  • Page 42 EKWXBA HE WATER CHILLERS AXIAL FANS OPERATION THERMOSTAT AND CONTROL MCX controller operation General>Password Shows the password of the current level and allows to modify it. General>Setup Set of parameters that define the configuration status of the equipment: from y01..to ..y09. The parameters that can be viewed or modified depends on the level of access.
  • Page 43: Commissioning Of The Unit

    EKWXBA HE WATER CHILLERS AXIAL FANS OPERATION THERMOSTAT AND CONTROL Commissioning of the unit It can be done as follows:  Press the UP key during 3 seconds. It will alternate between ON ↔ OFF.  Navigate through the menu: Refer to the previous section.
  • Page 44: Alarms. Display And Reset

    EKWXBA HE WATER CHILLERS AXIAL FANS OPERATION THERMOSTAT AND CONTROL ALARMS. Display and reset Main menu: ALA – Alarms. Sub-menu: AAL – Active Alarms Shows the active alarms. Each display is meant for one alarm. You can move between them by using UP and DOWN keys.
  • Page 45: Input And Output

    EKWXBA HE WATER CHILLERS AXIAL FANS OPERATION THERMOSTAT AND CONTROL Input and output Models 38.2 - 109.2 Main Control MCX08M POSITION ANALOGIC INPUT DIGITAL INPUT ANALOGIC OUTPUT DIGITAL OUTPUT Compressor Protection 1 Differential presostato / Flow switch Not used Compressor 1 Compressor Protection 2 Remote Start/Stop Not used...
  • Page 46 EKWXBA HE WATER CHILLERS AXIAL FANS OPERATION THERMOSTAT AND CONTROL Alarms MCX Active Relay Warning Circuit or Pump Code Description Reset type with unit Alarm Relay Compr. Heaters System Evap. Cond. Output Output General alarm Auto False True False SYSTEM General overload alarm Auto False...
  • Page 47 EKWXBA HE WATER CHILLERS AXIAL FANS Active Relay Warning Circuit or Pump Code Description Reset type with unit Alarm Relay Compr. Heaters System Evap. Cond. Output Output Circuit2 high suct press alarm Semi-Auto False True False General Evaporator Pump Manual False True False...
  • Page 48: Maintenance

    EKWXBA HE WATER CHILLERS AXIAL FANS MAINTENANCE MAINTENANCE AND CLEANING WARNING! Before performing any service or maintenance operation, it is mandatory to turn off the main power switch of the system to avoid any personal injuries. It must be locked so that nobody except a qualified technician can switch on electrical power.
  • Page 49: Repairing Operations

    EKWXBA HE WATER CHILLERS AXIAL FANS MAINTENANCE MAINTENANCE AND CLEANING Fans: Check the direction of the fans rotation and control their carriers. Check the transmission elements and the operating status. Before handling the fan, make sure that it is disconnected from the main power even if it is already stopped and make sure that nobody can restart the fan during the intervention.
  • Page 50: Refrigerant Charge

    EKWXBA HE WATER CHILLERS AXIAL FANS MAINTENANCE REFRIGERANT CHARGE WARNING! Never use oxygen to pressurize the system or purge lines for leak test. Oxygen reacts violently with oil, which can cause an explosion resulting in damage, personal injury or death. ...
  • Page 51: Options / Accessories

    EKWXBA HE WATER CHILLERS AXIAL FANS OPTIONS / ACCESSORIES 38.2 44.2 47.2 55.2 59.2 67.2 75.2 ○ ○ ○ ○ ○ ○ ○ Only cooling configuration ○ ○ ○ ○ ○ ○ ○ Rubber – Metal anti-vibratory supports ● ● ●...
  • Page 52 EKWXBA HE WATER CHILLERS AXIAL FANS OPTIONS / ACCESSORIES 95.2 109.2 121.4 132.4 171.4 193.4 207.4 ○ ○ ○ ○ ○ ○ ○ Only cooling configuration ○ ○ ○ ○ ○ ○ ○ Rubber – Metal anti-vibratory supports ● ● ●...
  • Page 53: Technical Specifications Of Equipments With Options

    EKWXBA HE WATER CHILLERS AXIAL FANS OPTIONS Technical specifications of equipments with options EKWXBA HE 38.2 44.2 47.2 55.2 59.2 67.2 OPTIONS COOLING ONLY OPTION Total refrigerant charge 10.0 12.4 13.0 14.0 WEIGHT – COOLING ONLY UNIT WITHOUT PUMP OPTION Pressure drop machine HYDRONIC KIT OPTION Connection type...
  • Page 54 EKWXBA HE WATER CHILLERS AXIAL FANS OPTIONS Technical specifications of equipments with options EKWXBA HE 193.4 207.4 OPTIONS COOLING ONLY OPTION Total refrigerant charge 23.5 x 2 24 x 2 WEIGHT COOLING ONLY UNIT 1879 1882 WITHOUT PUMP OPTION Pressure drop machine HYDRONIC KIT OPTION Connection type GROOVED –...
  • Page 55: Refrigeration Diagram

    EKWXBA HE WATER CHILLERS AXIAL FANS OPTIONS REFRIGERATION DIAGRAM LEGEND COMPRESSOR WATER CIRCULATING PUMP 4-WAY VALVE EEV. ELECTRONIC EXPANSION VALVE EXPANSION VALVE HIGH PRESSURE SWITCH CHECK VALVE PRESSURE TRANSMITTER BIDIRECTIONAL FILTER Pur. AIR DRAIN LIQUID TANK TAC. COMPRESSOR SUCTION TEMPERATURE PROBE PLATES HEAT EXCHANGER TEA.
  • Page 56: Ekwxba He - From 121.4 To 132.4 Cooling Only

    EKWXBA HE WATER CHILLERS AXIAL FANS OPTIONS REFRIGERATION DIAGRAM EKWXBA HE - from 121.4 to 132.4 cooling only EKWXBA HE - from 171.4 to 207.4 cooling only IOM_EKWXBA HE_38.2a207.4_207810_190100_EN...
  • Page 57: Hydraulic Diagram With Buffer Tank

    EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION OPTION Hydraulic diagram with buffer tank EKWXBA HE - from 38.2 to 109.2 EKWXBA HE - from 121.4 to 207.4 LEGEND B1/B2 - Circulating pump - Buffer tank - Plates heat exchanger OPTIONS - Water pressure manometer - Air drain B3 - Reserve circulating pump...
  • Page 58: Weight Distribution

    EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION OPTION Weight distribution Cooling only unit KRONO 2 HE WEIGHT DISTRIBUTION (kg) MODEL Total 38.2 44.2 47.2 55.2 59.2 67.2 75.2 95.2 109.2 121.4 1587 132.4 1699 171.4 1831 193.4 1864 207.4 1867 WITH RESERVE PUMP KRONO 2 HE WEIGHT DISTRIBUTION (kg)
  • Page 59 EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION OPTION Weight distribution With reserve pump and buffer tank KRONO 2 HE WEIGHT DISTRIBUTION (kg) MODEL Total Pump 38.2 Cooling only Pump 44.2 Cooling only Pump 47.2 Cooling only Pump 55.2 Cooling only Pump 59.2 Cooling only...
  • Page 60: Configuration Of Input And Output With Buffer Tank And Reserve Pump

    EKWXBA HE WATER CHILLERS AXIAL FANS INSTALLATION OPTION Configuration of Input and Output with buffer tank and reserve pump Models 38.2 – 109.2 Main Control MCX08M POSITION ANALOGIC INPUT DIGITAL INPUT ANALOGIC OUTPUT DIGITAL OUTPUT Compressor Protection 1 Differential presostato / Flow switch Not used Compressor 1 Compressor Protection 2...
  • Page 61: Appendix: Safety Data R410A

    EKWXBA HE 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 62 EKWXBA HE WATER CHILLERS AXIAL FANS IOM_EKWXBA HE_38.2a207.4_207810_190100_EN Subject to modifications without prior notification.

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