Hitecsa EKWXA 7002.4 Instruction manual

Installation, Operation & Maintenance Manual
05.17 207646 Rev.103
EKWXA │ EKWXBA
AIR-COOLED WATER CHILLERS ─ AXIAL FANS
Models: 7002.4 │ 8002.4 │ 9002.4
Cooling Capacities: from 178,3 kW to 213,6 kW
Heating Capacities: from 194,9 kW to 244,2 kW
ONLY COOLING
SOLO FRIO
HEATING PUMP

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. This has been the hallmark of our product catalogue.
The versatility of our factory allows us to contribute solutions, almost tailored to each project’s specifications, in search of a solution
to every problem that arises in design and implementation of air conditioning installations.
From all of us at Hiplus Aire Acondicionado, once again, thank you very much.

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AIR-COOLED WATER CHILLERS
AXIAL FANS
INDEX
INTRODUCTION................................................................................................................ 5
CONTENTS ...........................................................................................................................5
REGULATIONS AND CERTIFICATIONS...................................................................................6
SAFETY PRECAUTIONS...................................................................................................... 6
DESCRIPTION OF THE UNIT............................................................................................... 7
TECHNICAL DATA ............................................................................................................. 8
RECEPTION ..................................................................................................................... 10
INSPECTION .......................................................................................................................10
RIGGING ............................................................................................................................10
STORAGE ...........................................................................................................................10
INSTALLATION................................................................................................................ 11
DIMENSIONS......................................................................................................................11
Model 7002.4..................................................................................................................11
Models 8002.4 │ 9002.4 .................................................................................................12
WEIGHT DISTRIBUTION .....................................................................................................13
Model 7002.4..................................................................................................................13
Models 8002.4 │ 9002.4 .................................................................................................13
INSTALLATION LOCATION..................................................................................................14
UNIT SETTLEMENT .............................................................................................................14
WATER DRAIN....................................................................................................................14
ELECTRICAL CONNECTIONS ...............................................................................................14
SERVICE AREA ....................................................................................................................15
Model 7002.4..................................................................................................................15
Models 8002.4 │ 9002.4 .................................................................................................15
OPERATION .................................................................................................................... 16
OPERATING LIMITS ............................................................................................................16
Modo de Refrigeración 7002.4 │ 5002.4 │ 9002.4..........................................................16
Bomba de Calor 7002.4 │ 5002.4 │ 9002.4.....................................................................16
BEFORE START-UP .............................................................................................................17
START UP ...........................................................................................................................17
THERMOSTAT AND CONTROL......................................................................................... 17
MCX-15 CONTROL ..............................................................................................................17
Main Functions of the Control System ............................................................................17
MCX-15 START UP..............................................................................................................18
Start Menu......................................................................................................................18
Main Menu .....................................................................................................................18
Password Level ...............................................................................................................19
Inputs/Outputs ...............................................................................................................19
EKWXA –EKWXBA –BIG KRONO II

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AIR-COOLED WATER CHILLERS
AXIAL FANS
Model 7002.4..................................................................................................................20
Models 8002.4 │ 9002.4 .................................................................................................21
System Parameters .........................................................................................................22
Regulation Parameters ...................................................................................................23
Compressors ...................................................................................................................23
Alarms.............................................................................................................................24
HYDRONIC KIT ................................................................................................................ 26
TECHNICAL DATA ...............................................................................................................26
OPERATING LIMITS ............................................................................................................27
MAINTENANCE............................................................................................................... 27
CONSERVATION AND CLEANING .......................................................................................27
LUBRICANT ........................................................................................................................27
REFRIGERANT CHARGE ......................................................................................................28
OPTIONAL ...................................................................................................................... 28
ACCESSORIES /OPTIONAL .................................................................................................28
APPENDIX: SAFETY DATA R410A .................................................................................... 29

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EKWXA│EKWXBA
AIR-COOLED WATER CHILLERS
AXIAL FANS
INTRODUCTION
CONTENTS
Purpose of the Manual
This manual and the instruction documents of refrigeration lines, wiring diagrams and any other attached documents,
have been written to allow a correct installation, set up and maintenance of the unit. Therefore it is essential to read the
instructions with due attention. Verify 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. Otherwise, the manufacturer
declines any responsibility for any damage to persons or things, as a result of improper use of the unit and/or failure to
observe these instructions.
Preservation Manual
This manual and the electric diagram of the unit must be retained and remain available to the operator for any further consultation.
Updating the Data
The continuous improvement in design and performance to which we are committed gives us the right to modify the specifications of our
products without prior notice.
Electrical Network
Check that electrical network features are in accordance to data shown in the data nameplate of the unit.
Local Safety Regulations
Observe and analyze all possible causes of accidents that may arise in the place or places of installation of the units, check means and
tools to use, etc. It is not possible to anticipate each and every one of the potential circumstances of danger in this manual. Respect the
local security standards during installation.
Principles of Security on Installation
The unit is designed and built in a way that does not pose a risk to the health and safety of people. Appropriate project solutions have
been adopted to eliminate the possible causes of risk in the installation.
Packaging and Replacement of Equipment
The packaging material (plastic bags, insulating materials, nails, etc.) is a potential source of danger and should be kept
out of the reach of children and properly recycled according to local safety regulations. This product should not be mixed
with household waste at the end of its life. Due to the refrigerant, oil and other components contained in this product, it
must be dismantled by professional installers in accordance with current regulations.
Use
The unit will be used only for the reason has been conceived. Any other use does not imply any kind of compromise or link for the
manufacturer.
Incorrect Operation
In case of breakdowns or operation faults, turn off unit.
Periodic Inspections and Maintenance
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. Before executing any maintenance operation, cut off the unit power supply.
All operations must be carried out in accordance with local safety regulations.
Repairs
Reparations should be always realized for trained personal authorized by themanufacturer 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.
Refrigerant
This product is hermetically sealed and contains R-410A which is a HFC fluorinated greenhouse gas.

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AIR-COOLED WATER CHILLERS
AXIAL FANS
INTRODUCTION
REGULATIONS AND CERTIFICATIONS
ISO 9001:2008 CERTIFICATION: HILPUS AIRE ACONDICIONADO S.L., trying always to find the customer satisfaction, has obtained
the ISO 9001:2008 Quality System referred to its production activity. This will results in a continuous determination to improve quality and
reliability of all our products; commercial activities, design, raw materials, production and after-sales service, are the means to reach our
goal.
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.
CERTIFICACION EUROVENT: HITECSA participates in the EUROVENT Certification program. Check certified products on the web.
SAFETY PRECAUTIONS
DANGER
To open the electrical panel and access the inside of the machine it is MANDATORY to disconnect the power supply hose from the
machine, it MUST BE FREE OF TENSION for this operation.
Do not touch or adjust the safety elements inside any unit of the system. In the repairs use only originalspare parts and install them
properly in the same position where old parts were placed.
Installation and maintenance of air conditioning equipment can be dangerous because the system is under pressure, because some
of its elements have high temperatures and include electrical components.
Do not install the unit in explosive atmosphere.
ATTENTION!
Only qualified and trained service staff should install, commission and carry out maintenance works. Unqualified staff should only
carry out basic tasks such as cleaning and replacement of filters, etc.
Prevent access to children so they can not play with the appliances.
In every visit, all precautions should be taken into account: those recommended in the Installation, operation and maintenance
instructions, as well as the ones indicated in labels of the unit. Do not forget to strictly follow any other safety codes.
NO objects should be introduced into the air inlets or outlets that can be drawn into the fan, people, etc.
Use safety glasses, work gloves and any other safety accessory necessary.
For brazing operations use a quenching cloth and have at close distance a fire extinguisher.
This product contains fluorinated greenhouse gases, its leakage can cause displacement of air and cause insufficient oxygen to
breathe.
Must follow all safety recommendations.
Before starting installation, service or maintenance, turn off the main power switch in order to avoid
electrical shock that may cause personal damages.
WARNING!
SECURITY OF THE OPTIONAL HYDRONIC KIT WITH ELECTRIC HEATERS.
Before starting the equipment, make sure that the water tank is completely full and that the installation
is perfectly drained of air.
WARNING!

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AIR-COOLED WATER CHILLERS
AXIAL FANS
DESCRIPTION OF THE UNIT
The EKWXA / EKWXBA units are compact reversible WATER / AIR units for the production of hot / cold water. They are designed for
outdoor installation. Supplied with R-410A refrigerant charge, ready for installation.
These units are manufactured under a strict quality control throughout their process and once finished are tested in the factory, verifying
the correct operation of all its components.
The unit is composed by:
Hermetic compressor, alternative, with wide operating limits. It incorporates thermal protection of the windings (without requiring
additional protection), the oil load for its perfect lubrication and internal damping system. The compressor is mounted on the chassis
with shock absorbers and is acoustically insulated. All this guarantees a silent operation and without vibration.
External coils built with copper tube without welds and expanded in aluminum fins. Incorporate distributor with neck and calibrated
orifice (nozzle) to improve distribution of the gas in Cold mode.
Coolant-water exchanger made from stainless steel plates (AISI 316)welded with bronze base. Itis perfectly insulated with insulating
heat material to prevent the exchange of heat with the outside. It has built-in electrical heaters as an anti-ice protection to avoid the
risks of breaking it by freezing the water in case of lack of flow.
Fan motor mounted with a square base and circular inlet embouchure suitable for the aerodynamic performance of the flow driven
by the fan itself. Ready for outdoor installation, totally closed, with permanent lubrication. It consists of aluminum blades designed
to obtain a low sound level, inserted into the outer rotor of a high efficiency motor, with IP-54 protection and class F winding
insulation. It has internal thermal probes incorporated for its protection, as well as external security grid.
Thermostatic expansion valve with MOP at the plate exchanger inlet for cooling mode operation. The expansion in the external coil,
when necessary (operation in heating mode), is realized through a hole.
Safety pressure switch connected to the compressor output (maximum pressure point) of manual reset. Its cut is calibrated at a
pressure of 42 bars.
Bidirectional dehydrator filter typemounted on the liquid line.It consists of a solid desiccant core that minimizes vibrationand friction
during the operation of the equipment besides absorbing excess moisture and filter any impurities.
Tank to contain the variations of the refrigerant charge required by the machine when changing its operation between Cool/Heat.
Check valves only on Heat Pump units to bypass the expansion system of the secondary exchanger block. Cold mode performs the
bypass to battery, in Heat mode, it is done to the expansion valve.
The sheet metal structure of these equipments is resistant to the weather and is formed by galvanized steel sheet which is applied
an oven painting process by polymerization of powder paint which provides excellent overall coating and especially in corners and
edges. The self-supporting base is constructed with highly rigid steel. The rest of the structure is galvanized steel. The design is
done for an easy maintenance. The finished set has RAL 1013 color.

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EKWXA│EKWXBA
AIR-COOLED WATER CHILLERS
AXIAL FANS
TECHNICAL DATA
EKWXA/EKWXBA
7002.4
8002.4
9002.4
COOLING MODE(1)
Cooling capacity
kW
178,3
200,1
213,6
Total absorbed capacity (3)
kW
61,3
73,8
81,8
Total rated current
A
107,7
123,6
138,2
Compressor absorbed power
kW
54,2
65
72,8
Compressor rated current
A
94,3
111,8
125,2
Evaporator water flow
m³/h
33
35,5
37
Evaporator pressure drop
kPa
63
70,8
77,5
EER
2,91
2,71
2,61
ESEER
-
-
-
HEATING MODE(2)
Cooling capacity
kW
194,9
224,3
244,2
Total absorbed capacity(3)
kW
60,7
74,5
86,9
Total rated current
A
112,1
129,1
142,4
Compressor absorbed power
kW
56,7
65,8
73,2
Compressor rated current
A
98,1
112,1
125,6
COP
3,21
3,01
2,81
SCOP
-
-
-
REFRIGERANT
Number of circuits
2
Type
R-410A
Global warming potential (GWP)(4)
2088
Refrigerant charge cooling only (no optional)
Kg
2 x 23
2 x 22
2 x 23
Refrigerant charge heating pump (no optional)
Kg
2 x 23
2 x 23.5
2 x 24
COMPRESSOR
Type
SCROLL
Number of compressors
4
Number of power stages
4
Maximum current for operating circuit
A
71
80
89
Locked rotor current
A
249
264
309
Oil type
POE 160 SZ
Oil volume
L
2 x (6,7 + 6,7)
2 x (6,7 + 6,7)
2 x (6,7 + 6,7)
Crankcase strength
W
2 x (75 + 75)
2 x (75 + 75)
2 x (75 + 75)
FANS
Type
AXIAL
Number of total fans
4
6
6
Rated air flow
m3/ h
91690
105398
105398
Available static pressure
Pa
0
Diameter
mm
800
710
710
Absorbed power (by fan)
kW
2,06 / 1,33
1,52/ 0,97
1,52/ 0,97
Rated current (by fan)
A
3,8
3
3
Speed
r.p.m.
910
914
914
Note:
(1) COOLING MODE: Outdoor temperatura 35ºC, Water inlet temperature 12ºC, Water outlet temperature 7ºC.
(2) HEATING MODE: Outdoor temperature 7ºC D.B. / 6ºC W.B., Inlet temperature 40ºC, Water outlet temperature 45ºC.
(3) TOTAL ABSORBED CAPACITY: Absorbed power by the equipment in Cold or Heat conditions indicated above according to UNE-EN-14511-2: 2013.
(4) GWP: Global warming potential (climatic) of 1 kg of greenhouse gas relative to 1 kg of CO2, calculated in terms of 100-year warming potential.
(5) Measurement conditions on the free field, directivity 2 and 1,5 meters above the floor.

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EKWXA│EKWXBA
AIR-COOLED WATER CHILLERS
AXIAL FANS
TECHNICAL DATA
EKWXA/EKWXBA
7002.4
8002.4
9002.4
OUTDOOR HEAT EXCHANGER
Type
Aluminum fin coil and copper tubing
Quantity
2
Front surface of the exchanger
m2
5,18 + 5,18
INDOOR HEAT EXCHANGER
Type
PLATES (Water / Refrigerant)
Quantity
2
Evaporator water flow
m3/ h
33
35,5
37
Evaporator pressure drop
KPa
63
70,8
77,5
Water volume
L
8,4
8,4
8,4
Anti-ice resistance
W
100
WATER CONNECTIONS
Type
SLOTTED –Victaulic type
External diameter
(‘’)
3 ''
3 ''
3 ''
ELECTRIC SPECIFICATIONS
Supply voltage
V / ~F / Hz
400V - 3+N 50Hz
Maximum intensity
A
156,2
178,2
196,6
Starting current (AC)
A
334,7
362,1
416,3
SOUND LEVEL
Sound power
dB(A)
92,8
94,7
94,8
Sound pressure (5m)(5)
dB(A)
71
72,9
73
WEIGHT AND DIMENSIONS
Large
mm
3200
Width
mm
2250
High
mm
2150
Net weight of heat pump units - EKWXBA
kg
1720
1753
1759
Net weight of cooling only units - EKWXA
kg
1686
1719
1725
Note:
(1) COOLING MODE: Outdoor temperatura 35ºC, Water inlet temperature 12ºC, Water outlet temperature 7ºC.
(2) HEATING MODE: Outdoor temperature 7ºC D.B. / 6ºC W.B., Inlet temperature 40ºC, Water outlet temperature 45ºC.
(3) TOTAL ABSORBED CAPACITY: Absorbed power by the equipment in Cold or Heat conditions indicated above according to UNE-EN-14511-2: 2013.
(4) GWP: Global warming potential (climatic) of 1 kg of greenhouse gas relative to 1 kg of CO2, calculated in terms of 100-year warming potential.
(5) Measurement conditions on the free field, directivity 2 and 1,5 meters above the floor.

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AIR-COOLED WATER CHILLERS
AXIAL FANS
RECEPTION
INSPECTION
At the time of equipment delivery it is advisable to examine it carefully.
Check that the equipment has not been damaged during transport and has been supplied complete with all parts specified in the
order and/or with the optionals specified in the order. If this is not the case contact the transport company immediately. (First 48h).
Verify the correct voltage of the nameplate and make sure it’s in accordance with local power supply.
In case of any flaw or anomaly detected, please contact HITECSA.
RIGGING
Before moving the unit, make sure that all panels are well fixed.
Raise and set down the equipment carefully.
Do not tilt the unit more than 15 degrees during transportation.
When lifting the unit, make sure that it’s balanced and stable; bear in mind that the heaviest part is where the compressor is installed.
Always transport the unit in its original packaging to the place of installation.
Lifting through crane.
STORAGE
If the equipment is going to be stored please follow the instructions below in order to avoid damages, corrosion or deterioration:
Do not place the machine in places exposed to ambient temperature above 50ºC and preferably keep the unit away from direct
sunlight.
Avoid prolonged storage, before installation, water inlet, dust and objects in general due to invasion or biological, meteorological
and/or human inclemencies.
Minimum storage temperature is 5ºC.
Maximum Relative Humidity: 90%.
It is also recommended:
Move it carefully.
Avoid placing other objects on top of the unit (unless it is done within the limits of the overlap planes indicated on the packaging).
Avoid placing the unit with heat-shrink protection under the sun, as the pressure of the circuits could assume values that could lead
to the intervention of the safety valves.

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EKWXA│EKWXBA
AIR-COOLED WATER CHILLERS
AXIAL FANS
INSTALLATION
DIMENSIONS
Model 7002.4
1. Water inler Ø 3”
2. Water outlet Ø 3”
3. Electrical panel
4. Main switch
5. Electrical connection input
6. Optional electrical connection input
7. Water inlet with Hydronic Kit Ø 3”

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05.17 207646 Rev.103
EKWXA│EKWXBA
AIR-COOLED WATER CHILLERS
AXIAL FANS
INSTALLATION
DIMENSIONS
Models 8002.4 │ 9002.4
1. Water inler Ø 3”
2. Water outlet Ø 3”
3. Electrical panel
4. Main switch
5. Electrical connection input
6. Optional electrical connection input
7. Water inlet with Hydronic Kit Ø 3”

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AIR-COOLED WATER CHILLERS
AXIAL FANS
INSTALLATION
WEIGHT DISTRIBUTION
Model 7002.4
WEIGHT DISTRIBUTION (kg)
R1
R2
R3
R4
R5
R6
R7
R8
TOTAL
7002.4
Heating
pump
233
246
194
181
185
187
248
246
1720
Cooling
only
234
247
181
173
176
184
244
247
1686
Models 8002.4 │ 9002.4
WEIGHT DISTRIBUTION (kg)
R1
R2
R3
R4
R5
R6
R7
R8
TOTAL
8002.4
Heating
pump
229
241
206
185
189
195
249
259
1753
Cooling
only
228
241
195
178
181
192
244
259
1719
9002.4
Heating
pump
229
242
206
185
189
196
250
262
1759
Cooling
only
229
242
195
178
181
193
246
262
1725

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AIR-COOLED WATER CHILLERS
AXIAL FANS
INSTALLATION
INSTALLATION LOCATION
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 wich will be installed.
Verify that the ground or structure on which the unit will be installed is able to support its weight in operation.
Fit shock absorbers throughout the installation to prevent the transmission of noise and vibration.
Check that the direction of the sound level is not going to disturb anyone.
UNIT SETTLEMENT
Be sure unit is correctly leveled.
The bed frame should have sufficient strength to support unit weight.
Be sure that after settlement the unit drain is working properly.
WATER DRAIN
The indoor drain (of condensate water) has connection 3/4’’ MPT.
Condensate evacuation line diameter should be equal or larger than unit drain
connection depending on the line length and general building configuration.
The condensate line should be pitched a minimum 2% for proper water evacuation.
When drain line is exposed to air temperatures below0 grades is necessary to provide
thermal insulation or electrical heating wire to avoid water freezing and tube damage.
It is convenient to install the trap with proper dimensions.
ELECTRICAL CONNECTIONS
Unit current supply should be within 10% of Volts indicated on the unit nameplate.
Unit star-up at incorrect voltage and resulted from its damages are not covered by Hitecsa guarantee.
When making electrical connections always use the unit wiring diagram.
Be sure that the compressor crankcase heater can be energized before unit start.
Do not operate at any different current from that is shown on the unit’s nameplate.
The installer has to install the line protection elements according to the local laws.
The interconnecting wires have to be in the protection tube or inside the groove channel.
Before starting any type of operations put in position off main power switch.
WARNING!
Recommended siphon measures

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EKWXA│EKWXBA
AIR-COOLED WATER CHILLERS
AXIAL FANS
INSTALLATION
SERVICE AREA
Be sure to respect the measures for a proper operation of the unit.
Model 7002.4
Models 8002.4 │ 9002.4

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AIR-COOLED WATER CHILLERS
AXIAL FANS
OPERATION
OPERATING LIMITS
OPERATING LIMITS
7002.4
8002.4
9002.4
Nominal Water Flow
m3/h
33
35,5
37
Minimum Water Flow
m3/h
21,9
23,6
24,6
Maximum Water Flow
m3/h
49,5
53,3
55,5
Minimum Volume of Water
l
455
510
550
Modo de Refrigeración 7002.4 │ 5002.4 │ 9002.4
Bomba de Calor 7002.4 │ 5002.4 │ 9002.4
EKWXA - EKWXBA
6025 30 35 40 45 50 55
-15
-10
-5
0
5
10
15
20
LWT (°C)
Temperatura exterior / Outdoor temperature / Témperature éxterieur (°C)
-7
-10 -5 0510 15 20 25
-20
-10
0
10
20
30
40
55
LWT (°C)
Temperatura exterior / Outdoor temperature / Témperature éxterieur (°C)
25
46
-20
-10 -5 0510 15 20 25
-15
-10
0
10
20
30
40
46
LWT (°C)
Temperatura exterior / Outdoor temperature / Témperature éxterieur (°C)
55
18 -7
EKWXA - EKWXBA
+ Glicol
+ Glycol
EKWXA - EKWXBA
+ Control de condensación
+ Condensation Control
+ Contrôle de la Condensation
EKWXA - EKWXBA
7002 - 9002
EKWXA - EKWXBA
+ Glicol
+ Glycol
18
-15

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AIR-COOLED WATER CHILLERS
AXIAL FANS
OPERATION
START UP
Start up has to be performed by a qualified service person.
It is necessary to take notes of the air inlet and outlet temperatures to the internal coil, the volts and amps of the compressor and
motor fan, as well as the suction and discharge pressure of each compressor.
It should be remembered that it is necessary to clean the air filters after the first 4 hours of operation.
Observe at least, 3 cooling cycle operations.
Due to the unit equips frequency converters, it is essential that the power is at least 300mA to prevent power cuts caused by the
activation of the circuit breaker.
THERMOSTAT AND CONTROL
MCX-15 CONTROL
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: 4 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.
Check the following points:
Electrical connections are well tightened.
Panels are firmly secured with screws.
There are no oil or refrigerant leaks.
The unit is correctly leveled.
There is enough space for service and maintenance.
Drainage is not blocked.
Check that the crankcase heater of each compressor is in operation for 24 hours prior to commissioning.
Air filters are cleaned and correctly mounted.
Grilles, air diffusers, air ducts and flexible connections are in good condition.
Electrical power source is in accordance with what is said in the nameplate.
Fans rotate in the right direction.
Reed the User Manual
BEFORE START-UP

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05.17 207646 Rev.103
EKWXA│EKWXBA
AIR-COOLED WATER CHILLERS
AXIAL FANS
THERMOSTAT AND CONTROL
MCX-15 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) Usedto 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.

19
05.17 207646 Rev.103
EKWXA│EKWXBA
AIR-COOLED WATER CHILLERS
AXIAL FANS
THERMOSTAT AND CONTROL
MCX-15 START UP
Password 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/WARNINGS
COMPRESSOR
WATER PUMP
OUTDOOR FAN
ANTI-FREEZE HEATER
COOL/HEAT/ ANTI- FROST MODE
DIGITAL OUTPUTS
0=OFF
1=ON
ANALOG OUTPUTS
DIGITAL INPUTS
0=No Active
1= Active
ANALOG INPUTS

20
05.17 207646 Rev.103
EKWXA│EKWXBA
AIR-COOLED WATER CHILLERS
AXIAL FANS
THERMOSTAT AND CONTROL
MCX-15 START UP
Model 7002.4
POSITION
ANALOG INPUTS
DIGITAL INPUTS
ANALOG OUTPUTS
DIGITAL OUTPUTS
1
Water inlet temperature
Differential pressure
switch/ Flow switch
Fans circuit 1
Compressor 1 circ.1
2
Water outlet temperature
circuit 1
Thermal Compressor 1
Fans circuit 2
Compressor 2 circ.1
3
Water outlet temperature
circuit 2
Thermal Compressor 2
4 ways valve, circuit 1 (only
heat pump)
4
Cond./evap pressure.
Cool/Heat circuit 1
Thermal outdoor fans
circuit 1
Antifreeze resistance circuit
1
5
Evap./cond pressure.
Cool/Heat circuit 1
Safety high pressure
switch circuit 1
Compressor 1 circ.2
6
Cond./evap pressure.
Cool/Heat circuit 2
Remote Start/Stop
Compressor 2 circ.2
7
Evap./cond pressure.
Cool/Heat circuit 2
Remote Cool/Heat selector
Water pump (KIT 1 pump)
8
Second SETPOINT
Antifreeze resistance circuit
2
9
Thermal Compressor 3
10
Thermal Compressor 4
11
Thermal outdoor fans
circuit 2
Fans circuit 1
12
Safety high pressure
switch circuit 2
Fans circuit 2
13
Thermal pump
14
4 ways valve, circuit 2 (only
heat pump)
15