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EKWXBA HE 132.4

Hitecsa EKWXBA HE 55.2, EKWXBA HE 44.2, EKWXBA HE 67.2, EKWXBA HE 75.2, EKWXBA HE 95.2 Installation, Operation & Maintenance Manual

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INSTALLATION, OPERATION & MAINTENANCE MANUAL
EKWXBA HE
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
Models: 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
Cooling capacities: from 37.9 kW to 206.5 kW Heat capacities: from 42.3 kW to 246.8 kW
WATER CHILLERS – AXIAL FANS
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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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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
EKWXBA HE / KRONO
2
HE
INDEX
INTRODUCTION.................................................................................................................... 5
REGULATIONS AND CERTIFICATIONS ............................................................................. 8
RULES AND REGULATIONS: .................................................................................... 8
SAFETY PRECAUTIONS ...................................................................................................... 9
TECHNICAL SPECIFICATIONS ......................................................................................... 11
TRANSPORT & RECEPTION ............................................................................................. 17
INSPECTION AT RECEPTION ...................................................................................... 17
RIGGING ........................................................................................................................ 17
STORAGE ...................................................................................................................... 17
INSTALLATION ................................................................................................................... 18
DIMENSIONS ................................................................................................................. 18
Models 38.2 - 67.2 .................................................................................................... 18
Model 75.2 ................................................................................................................ 19
Models 95.2 – 109.2 ................................................................................................. 20
Models 121.4 – 132.4 ............................................................................................... 21
Models 171.4 ............................................................................................................ 22
Models 193.4 – 207.4 ............................................................................................... 23
INSTALLATION SITE ..................................................................................................... 24
SERVICE AREA (MM) ..................................................................................................... 24
UNIT SETTLEMENT....................................................................................................... 27
Weight distribution .................................................................................................... 27
INSTALLATION OF WATER PIPES ............................................................................... 29
Security devices ........................................................................................................ 29
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 ....................................................................................................... 33
Installation limits ....................................................................................................... 34
OPERATION LIMITS ........................................................................................................... 35
COOLING MODE ........................................................................................................... 35
HEATING MODE ............................................................................................................ 35
OPERATION ........................................................................................................................ 36
BEFORE START-UP ...................................................................................................... 36
START-UP ..................................................................................................................... 36
THERMOSTAT AND CONTROL .................................................................................... 37
MODELS 38.2 - 109.2: CONTROL MCX08 ............................................................... 37
MODELS 121.4 – 207.4: MCX15 CONTROL ........................................................... 38
MCX controller operation .......................................................................................... 39
Commissioning of the unit......................................................................................... 43
Setpoint Temperature Change .................................................................................. 43
OPERATION MODE SELECTION ............................................................................ 43
Temperature Regulation Mode Configuration. .......................................................... 43
Disabling one compressor ........................................................................................ 43
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
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 ................................................. 53
REFRIGERATION DIAGRAM ................................................................................... 55
EKWXBA HE - from 38.2 to 67.2 cooling only ......................................................... 55
EKWXBA HE - 75.2 to 109.2 cooling only................................................................ 55
EKWXBA HE - from 121.4 to 132.4 cooling only ..................................................... 56
EKWXBA HE - from 171.4 to 207.4 cooling only ..................................................... 56
Hydraulic diagram with buffer tank ............................................................................ 57
Weight distribution .................................................................................................... 58
Configuration of Input and Output with buffer tank and reserve pump ...................... 60
APPENDIX: SAFETY DATA R410A ................................................................................... 61
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
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. Otherwise, the manufacturer declines any responsibility for any damage to persons, animals or things, as a result of improper use of the unit and/or failure to observe these instructions. In case of different interpretations and/or errors the documentary priority will be: 1. Characteristics plate of the unit, 2. IOM (this document), 3. EDM, technical catalogue, 4. UM user manuals.
Check that the electrical network features are in accordance to data shown in the data nameplate of the unit.
The material of the package (plastic bags, insulating materials, nails, etc.) is a potential source of danger. Consequently, it should be kept out of the reach of children and properly recycled according to the valid 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, all waste should be sent, according to its nature to recycling, composting or treatment plants, or an authorized management agency in accordance with current local legislations.
INTRODUCTION
Purpose of this Manual
Conservation of the 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 Supply
Local Safety Regulations
Observe and analyse 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 valid 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 solutions for the project have been adopted to eliminate the possible causes of risk in the installation.
Packaging and Replacement of Equipment
Utilization
The unit will be used only for the reason it 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.
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
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. Make sure to leave the maintenance areas open. If these areas have to be necessarily invaded by the construction of air supply and/or lateral return ducts. Verify that the design of the ducts allow the access to the fans and the change of the filters or that these are accessible from the other lateral.
All operations should be carried out in accordance with local safety regulations.
The reparations should be always and exclusively made by trained personal authorized by the manufacturer using original spares. The safeties of the unit could be affected due to the failure to comply with these warnings.
INTRODUCTION
Periodic Inspections and Maintenance
Repairing Operations
Modifications
The manufacturer will not respond to the warranty and to the possible damages of the unit in case of electrical and/or mechanical modifications. The unauthorized manipulation, reparation or modification of the unit will automatically invalidate the warranty.
Refrigerant
This product is hermetically sealed and contains R-410A which is a HFC fluorinated greenhouse gas.
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
INTRODUCTION
Name Plate
Description of the name plate attached to the unit.
1. Name of the Unit.
2. Year of manufacture.
3. Unit code.
4. Serial Number.
5. Test Pressure, Refrigerant Side.
6. Cooling Capacity in Rated Conditions (EN-14511)
7. Heating Capacity in Rated Conditions (EN-14511)
8. Water Flow in the Indoor Heat Exchanger.
9. Air Flow in the Outdoor Heat Exchanger (“X” If not applicable).
10. Water Flow in the Outdoor Heat Exchanger (“X” If not applicable).
11. Maximum Operating Pressure on the Refrigerant Side of the Outdoor Heat Exchanger
12. Total Number of Compressors.
13. Protection Code IP (Dust or water tightness).
14. Type of refrigerant needed for unit operation.
15. Refrigerant charge needed for optimum operation of the unit. In case of difference with the catalogue value, the value indicated on the name plate is the most suitable for the particular unit.
16. Total weight of the unit + Option and accessories in operating conditions.
17. Number of phases (three-phase ± N, single phase, etc.) and voltage at which this unit must be supplied.
18. Frequency of the electrical network to which the machine must be connected.
19. Maximum starting current (all electrical components running at maximum current and commissioning of the last stage of compressors)
20. Gross performance of the equipment + accessories in cooling mode.
21. Maximum current operating in cooling mode.
22. Absorbed power by the unit (standard unit operating under rated cold conditions ± optional, etc.)
23. Gross performance of the equipment + accessories in heating mode.
24. Maximum current operating in heating mode.
25. Unit power input (standard unit operating under rated heat conditions ± optional, etc.)
26. Lower / higher design temperature according to pressure equipment directive 97/23/CE (PED).
27. Design pressure (PED).
28. Unit Category (PED) and fluid group (refrigerant)
29. Global warming potential of refrigerant relative to CO2.
30. CE label and number of the certifying entity (only category II).
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
REGULATIONS AND CERTIFICATIONS
ISO 9001 CERTIFICATION: HIPLUS AIRE ACONDICIONADO S.L., trying always to find the maximum satisfaction of
costumers, has obtained the ISO 9001:2015 Quality System referred to its production activity. This will result 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.
EUROVENT CERTIFICATION: HITECSA participates in the EUROVENT Certification program. Check certified products on the web.
RULES AND REGULATIONS:
Commission Regulation (EU) 2016/2281 Ecodesign requirements for energy-related products, with regard to
ecodesign requirements for air heating products, cooling products, high temperature process chillers and fan coil units Text with EEA (European Economic Area) relevance.
Commission Regulation (EU) No 813/2013 Ecodesign requirements for space heaters and combination heaters (Text with EEA relevance).
Regulation UNE-EN 14511:2014 Air conditioners, Water Chillers and Heat Pumps equipped with an electrical powered compressor meant for heating or cooling of premises.
Regulation UNE-EN 14825:2016 Air conditioners, Water Chillers and Heat Pumps equipped with an electrical powered compressor meant for heating or cooling of premises. Tests and classification completed in partial load conditions and calculation of the seasonal performance.
Regulation UNE-EN 60204 :2007 Machine safety. Electrical part of the machines.
Directive 2014/68/UE of the European Parliament and of the Council of 15 May 2014 on the harmonisation of the laws
of the Member States relating to the making available on the market of pressure equipment (Text with EEA relevance).
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
The warranty of the unit will not respond to the damages caused by frozen water.
WARNING!
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.
It is absolutely prohibited to realize any operation on parts that are electrically powered on. The protection
class of the opened equipment is IP00!
The absence of voltaje must be confirmed by a minimum two poles voltaje tester.
DANGER
Do not touch or adjust the safety devices inside any unit of the system. For repairs use only original spare
parts and mount them properly in the same position where old parts were placed.
The installation and maintenance of air conditioning equipment may be dangerous because the system is
under pressure, some of its elements have high temperatures and include electrical components.
Do not install the unit in an explosive atmosphere.  The units equipped with water-air, water-water, or refrigerant-water heat exchangers shall be
protected properly against damage caused by frost. A proper protection is obtained by adding the necessary anti-frost liquid so that the freezing temperature becomes minimum -2°C (6% when using Ethylene Glycol).
Moreover when the ambient temperature in any part of the installation may reach values lower than 5°C it is COMPULSORY to protect the unit and the whole installation with additional measures such as heating tubes, draining the unit and the whole installation for water (when the unit is not under operation) or adding more anti-frost liquid so that the freezing point always will be lower than the minimum temperature that the ambient air may reach.
Even after disconnecting the main voltage, life-threatening charges may appear between the protective ground
“PE” and the main connection.
When the motor runs independently due to air flowing through or if it continues to run down after being turned
off, dangerous voltages of over 50 V can arise on the internal connections of the motor through operation of the generator.
When there are EC motors or motors with variable speed control, the protective earth is conducting high
discharge currents (depending on the switching frequency, current source voltage and motor capacity). Earthing in compliance with EN specifications shall therefore be observe even for testing and trial conditions (EN 50 178, Art. 5.2.11). Without earthing, dangerous voltages can be present on the motor housing.
Because of the use of capacitors, danger of death exists even after switching off the device in case of direct
contact with conductive parts or with parts that carry voltage due to fault condition. It is only allowed remove or open the housing of the controller when the power supply cable is disconnected and after a waiting time of 3 minutes.
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
ATTENTION!
will be given to the person or operating company of the unit, and not to the manufacturer.
WARNING!
SAFETY PRECAUTIONS
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.
Prevent access to children so they cannot play with the appliances.  In every visit, all precautions must 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 precautions.
DO NOT introduce objects 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.  The fan / motor may switch on and off automatically for functional reasons.  After power failure or main disconnection automatic restart of the fan may occur when power supply is
back!
Wait for the fan to come to a complete standstill before approaching it!  In the AC external rotor motor the external rotor turns during operation!  For brazing operations use a quenching cloth and take precautions to 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 breath. The decomposition of fluorinated gases when being burned due to e.g. brazing operations, may cause the
existence of highly toxic and corrosive gases.
Must follow all safety recommendations.
The responsibility of all personal and material damages caused by an unplanned or inappropriate use
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
EKWXBA HE
38.2
44.2
47.2
55.2
59.2
67.2
CAPACITIES
COOLING CAPACITY (1 )
Cooling capacity
kW
37.9
44.1
47.3
55.4
59.3
66.6
Total power input
kW
14.5
16.9
19.2
21.3
24.1
28.0
Water flow
m3/h
6.2
7.1
8.0
9.3
10.3
11.3
Available static pressure
KPa
165
162
160
156
154
149
EER
-
2.62
2.61
2.47
2.60
2.47
2.37
SEER
-
4.09
3.94
3.83
4.06
3.95
3.80
ηs cooling
%
160.6
154.7
150.3
159.5
155.2
149.2
HEAT CAPACITY (2)
Heating capacity
kW
42.3
48.9
55.2
63.5
71.7
79.6
Total power input
kW
15.3
17.8
20.8
22.6
26.2
29.3
COP
-
2.76
2.74
2.66
2.81
2.73
2.72
Water flow
m3/h
7.4
8.5
9.6
11.1
12.5
13.8
Available static pressure
KPa
153
150
147
142
137
131
HEAT CAPACITY (3)
Heating capacity
kW
43.65
49.71
56.0
65.5
72.9
82.36
Total power input
kW
11.93
14.49
17.1
19.0
21.7
24.64
COP
-
3.66
3.43
3.26
3.45
3.36
3.34
Water flow
m3/h
7.6
8.7
9.8
11.4
12.7
14.3
Available static pressure
KPa
149
146
143
137
132
128
SCOP
-
3.21
3.20
3.20
3.21
3.20
3.20
ηs heating
%
125.4
125.0
125.0
125.4
125.0
125.0
Note:
(1)
AC application. COOLING MODE: Outdoor temperature 35ºC, inlet water temperature 12ºC, outlet
water temperature 7ºC.
(2)
IT application. HEATING MODE: Outdoor temperature 7ºC B.S. / 6ºC B.H., inlet water temperature
40ºC, outlet water temperature 45ºC.
(3)
LT application. HEATING MODE: Outdoor temperature 7ºC B.S. / 6ºC B.H., inlet water temperature
30ºC, outlet water temperature 35ºC.
TECHNICAL SPECIFICATIONS
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
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
A
47
53
57
65
71
81
Start-up current
A
120
168
169
177
189
232
REFRIGERANT
Number of circuits
- 1 Gas type
-
R-410A
Global Warming Potential (GWP)
(4)
-
2088
Total refrigerant charge (EKWXB without options)
kg
11.1
11.2
11.3
12.8
13.6
14.5
COMPRESSORS
Type
-
Scroll
Total number of compressors
Units
2
Number of stages Power
- 2 Oil type
-
POE
Oil volume
L
2x3
2x3.6
Crankcase resistance
W
2x48
0
OUTDOOR FAN
Type
-
Axial EC
Total number
- 2 Max. air flow
m3/h
34468
34384
34329
38059
37990
37885
Available static pressure
Pa 0 Nominal power
kW
2 x 1.95
Max. current
A
2 x 3.2
2 x 3.3
OUTDOOR HEAT EXCHANGER
Type
-
Coil of finned copper tubes
Number
- 2 Coil area (total)
m²
1.5+1.5
WATER CIRCUIT
Connection type
-
GROOVED – VICTAULIC TYPE
Connection outer diameter
"
2"
WATER PUMP
Model
-
CEA 210/3
Number
-
1
Max. operating current one pump
A
2.5
INDOOR HEAT EXCHANGER
Type
-
PLATES (Water/Refrigerant)
Quantity
-
1
Water volume
L
6
7
Antifrost resistance
W
100
0
SOUND LEVEL
Sound power (Lw)
dB(A)
86
87
88
Sound pressure (Lp 5m)
(5)
dB(A)
65
66
67
0
DIMENSIONS and WEIGHT
Length
mm
2215
Width
mm
1350
Height
mm
1520
WEIGHT (without options nor charge) - EKWXBA
kg
634
657
660
690
690
698
WEIGHT – COOLING ONLY
kg
628
650
653
683
683
691
TECHNICAL SPECIFICATIONS
Note:
(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)
Conditions measured in open field, directivity 2 and at 1.5 m from the ground.
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
EKWXBA HE
75.2
95.2
109.2
CAPACITIES
COOLING CAPACITY (1 )
Cooling capacity
kW
75.3
96.6
115.5
Total power input
kW
26.2
35.6
45.0
Water flow
m3/h
13.0
17.0
19.4
Available static pressure
KPa
164
143
134
EER
-
2.87
2.71
2.57
SEER
-
4.10
3.85
3.81
ηs cooling
%
161.1
150.8
149.4
HEATING CAPACITY (2)
Heating capacity
kW
84.8
109.8
131.2
Total power input
kW
27.5
41.9
48.2
COP
-
3.08
2.62
2.72
Water flow
m3/h
14.4
19.1
22.3
Available static pressure
KPa
136
122
110
HEATING CAPACITY (3)
Heating capacity
kW
87.47
111.2
133.5
Total power input
kW
23.55
33.8
41.0
COP
-
3.71
3.29
3.25
Water flow
m3/h
14.9
19.3
23.4
Available static pressure
KPa
127
114
101
SCOP
-
3.27
3.20
3.20
ηs heating
%
128.0
125.1
125.0
Note:
(1) AC application. COOLING MODE: Outdoor temperature 35ºC, inlet water
temperature 12ºC. Water outlet temperature 7ºC.
(2) IT application. HEATING MODE: Outdoor temperature 7ºC B.S. / 6ºC B.H., inlet
water temperature 40ºC, outlet water temperature 45ºC.
(3) LT application. HEATING MODE: Outdoor temperature 7ºC B.S. / 6ºC B.H., inlet
water temperature 30ºC, outlet water temperature 35ºC.
TECHNICAL SPECIFICATIONS
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
EKWXBA HE
75.2
95.2
109.2
ELECTRICAL DATA
Power supply
V / ~/Hz
400/3+N/50
Max current
A
81
111
125
Start-up current
A
233
259
287
0
REFRIGERANT
Number of circuits
- 2 Gas type
-
R-410A
Global Warming Potential (GWP)
(4)
-
2088
Total refrigerant charge
kg
18.0
22.5
23.0
0
COMPRESSORS
Type
-
Scroll
Total number of compressors
2 Number of stages Power - 2
Oil type
POE
Oil volume
L
2x3.6
2x6.7
Crankcase resistance
W
2x48
2x56
0
OUTDOOR FAN
Type
-
Axial EC
Total number
-
2 3
Max. air flow
m3/h
44000
50100
54000
Available static pressure
Pa
0
Nominal power
kW
2 x 1.95
3 x 1.95
Max. current
A
2 x 3.3
3 x 3.2
0
OUTDOOR HEAT EXCHANGER
Type
Aluminium fin coil and copper tubing
Number
1 Coil area (total)
m²
1 x 6.7
0
WATER CIRCUIT
Connection type
GROOVED – VICTAULIC TYPE
Connection outer diameter
"
2"
WATER PUMP
Model
CEA 370/2
Number
1
Max. operating current one pump
A
3.4
INDOOR HEAT EXCHANGER
Type
Plates (Water/refrigerant)
Quantity
-
1
Water volume
L
10
Antifrost resistance
W
100
0
SOUND LEVEL
Sound power (Lw)
dB(A)
90
92
Sound pressure (Lp 5 m)
(5)
dB(A)
69
71
0
DIMENSIONS and WEIGHT
Length
mm
3200
Width
mm
1350
Height
mm
2150
WEIGHT (without options nor charge) - EKWXBA
kg
855
970
WEIGHT – COOLING ONLY
kg
835
945
TECHNICAL SPECIFICATIONS
Note:
(1) GWP: Global Warming Potential (climatic) of 1 kg of greenhouse gas relative to 1 kg of CO2,
(2) Conditions measured in open field, directivity 2 and at 1.5 m from the ground.
calculated in terms of 100-year warming potential.
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
EKWXBA HE
121.4
132.4
171.4
193.4
207.4
CAPACITIES
COOLING CAPACITY (1 )
Cooling capacity
kW
120.6
131.5
171.3
193.3
206.5
Total power input
kW
45.4
50.6
62.4
71.7
79.9
Water flow
m3/h
20.4
22.3
29.1
32.8
35.1
Available static pressure
KPa
153
149
150
144
140
EER
-
2.65
2.60
2.75
2.70
2.58
SEER
-
3.94
3.85
3.91
3.84
3.80
ηs cooling
%
154.4
151.1
153.3
150.5
149.0
HEATING CAPACITY (2)
Heating capacity
kW
133.7
141.2
196.5
221.5
242.3
Total power input
kW
49.5
53.1
69.1
75.4
88.5
COP
-
2.70
2.66
2.85
2.94
2.74
Water flow
m3/h
23.2
24.6
34.1
38.5
42.0
Available static pressure
KPa
140
138
135
127
120
HEATING CAPACITY (3)
Heating capacity
kW
137.66
144.96
200.2
227.7
246.8
Total power input
kW
40.79
43.36
55.8
61.7
73.3
COP
-
3.37
3.34
3.59
3.66
3.37
Water flow
m3/h
23.9
25.2
34.8
39.1
42.8
Available static pressure
KPa
135
133
130
122
115
SCOP
-
3.21
3.20
3.21
3.20
3.20
ηs heating
%
125.4
125.0
125.4
125.0
125.0
Note:
(1) AC application. COOLING MODE: Outdoor temperature 35ºC, inlet water temperature
12ºC. Water outlet temperature 7ºC.
(2) IT application. HEATING MODE: Outdoor temperature 7ºC B.S. / 6ºC B.H., inlet water
temperature 40ºC, outlet water temperature 45ºC.
(3) LT application. HEATING MODE: Outdoor temperature 7ºC B.S. / 6ºC B.H., inlet water
temperature 30ºC, outlet water temperature 35ºC.
TECHNICAL SPECIFICATIONS
15
Page 16
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
EKWXBA HE
121.4
132.4
171.4
193.4
207.4 ELECTRICAL DATA
Power supply
V / ~/Hz
400/3+N/50
Max current
A
138
152
186
223
237
Start-up current
A
283
294
327
353
409
0
REFRIGERANT
Number of circuits
- 2 Gas type
-
R-410A
Global Warming Potential (GWP)
(4)
-
2088
Total refrigerant charge
kg
21.5 x 2
23 x 2
23.5 x 2
24 x 2
0
COMPRESSORS
Type
-
Scroll
Total number of compressors
4 Number of stages Power
- 4 Oil type
POE
Oil volume
L
2 x 6.9
2 x 13.4
Crankcase resistance
W
4x56
0
OUTDOOR FAN
Type
-
Axial EC
Total number
-
4
6
Max. air flow
m3/h
91780
91626
87660
100428
100222
Available static pressure
Pa
0
Nominal power
kW
4 x 1.95
6 x 1.95
Max. current
A
4 x 3.3
6 x 3.2
0
OUTDOOR HEAT EXCHANGER
Type
Aluminium fin coil and copper tubing
Number
2 Coil area (total)
m²
2 x 6.7
0
WATER CIRCUIT
Connection type
GROOVED – VICTAULIC TYPE
Connection outer diameter
"
2 1/2"
3"
WATER PUMP
Model CEA 210/3
CEA 370/2
Number
2
Max. operating current one pump
A
2.5
3.4
INDOOR HEAT EXCHANGER
Type
Plates (Water/refrigerant)
Quantity
-
2
Water volume
L
14
19
Antifrost resistance
W
2 x 100
0
SOUND LEVEL
Sound power (Lw)
dB(A)
90
93
95
Sound pressure (Lp 5 m)
(5)
dB(A)
69
72
74
0
DIMENSIONS and WEIGHT
Length
mm
3200
Width
mm
2215
Height
mm
2150
WEIGHT (without options nor charge) - EKWXBA
kg
1621
1733
1865
1898
1901
WEIGHT – COOLING ONLY
kg
1605
1716
1846
1879
1882
TECHNICAL SPECIFICATIONS
Note:
(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) Conditions measured in open field, directivity 2 and at 1.5 m from the ground.
16
Page 17
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
Pict. 1
TRANSPORT & RECEPTION
INSPECTION AT RECEPTION
It is advisable to check the equipment carefully upon reception. 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 optional specified in the order. If this is not the case contact the transport company immediately (within 48h)
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. Raise and set down the equipment carefully. Do not tilt the unit more than 15 degrees during transportation, (Pict. 1). Always transport the unit in its original packaging to the place of installation. All units come with a particular rigging diagram of that model similar to the one shown below. Be sure to hoist the
machine through the points indicated in the diagram.
Make sure that the unit is balanced, stable and without any deformations when it is lifted.
STORAGE
If the equipment is going to be stored before the installation, please follow the instructions below in order to avoid damages, corrosion or deterioration:
Move it carefully. Do not place the machine in places exposed to ambient temperatures above 50ºC and preferably keep the unit
away from direct sunlight.
Avoid placing the unit with plastic wrapping protection under the sun as the pressure of the circuits could assume
values that could lead to the intervention of the safety valves. In addition, when cooling, water condensation occurs inside the machine and the plastic wrap.
Avoid placing other objects on top of the unit (unless it is done within the limits of the overlap planes indicated on
the packaging, etc. Follow these indications).
Avoid prolonged storage before installation, water penetration, dust and objects in general due to invasion or
biological, meteorological and/or human impacts.
Minimum storage temperature: 5ºC. Maximum relative humidity: 90%.
17
Page 18
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
Unit with buffer tank
1. Water inlet Ø 2”
2. Water outlet Ø 2”
3. Electrical panel board
4. Main switch
5. Power supply input
INSTALLATION
DIMENSIONS
Models 38.2 - 67.2
18
Page 19
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
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)
INSTALLATION
DIMENSIONS
Model 75.2
19
Page 20
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
Buffer tank (as an option)
1. Water inlet Ø 2”
2. Water outlet Ø 2”
3. Electrical panel board
4. Main switch
5. Power supply input
INSTALLATION
DIMENSIONS
Models 95.2 – 109.2
20
Page 21
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
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”
INSTALLATION
DIMENSIONS
Models 121.4 – 132.4
21
Page 22
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
1. Water inlet Ø 3”
2. Water outlet Ø 3”
3. Electrical panel board
4. Main switch
5. Power supply input
6. Power supply input option
7. Water inlet with buffer tank Ø 3”
INSTALLATION
DIMENSIONS
Models 171.4
22
Page 23
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
8. Water inlet Ø 3”
9. 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”
INSTALLATION
DIMENSIONS
Models 193.4 – 207.4
23
Page 24
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
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. 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.
SERVICE AREA (mm)
Make sure you respect the following measurements for the correct operation of the unit.
Models 38.2 – 67.2
24
Page 25
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
INSTALLATION
SERVICE AREA
Model 75.2
Models 95.2 – 109.2
25
Page 26
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
INSTALLATION
SERVICE AREA
Models 121.4 – 171.4
Models 193.4 – 207.4
26
Page 27
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
WEIGHT DISTRIBUTION (kg)
MODEL
R1
R2
R3
R4
Total
38.2
171
125
143
196
634
44.2
180
129
145
203
657
47.2
181
130
146
203
660
55.2
187
133
154
216
690
59.2
187
133
154
216
690
67.2
190
135
155
218
698
WEIGHT DISTRIBUTION (kg)
MODEL
R1
R2
R3
R4
Total
75.2
218
181
207
249
855 WEIGHT DISTRIBUTION (kg)
MODEL
R1
R2
R3
R4
Total
95.2
267
205
216
282
970
109.2
267
205
216
282
970
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
Model 75.2
Models 95.2 - 109.2
Models 121.4 – 171.4
27
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
WEIGHT DISTRIBUTION (kg)
MODEL
R1
R2
R3
R4
R5
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
1865
WEIGHT DISTRIBUTION (kg)
MODEL
R1
R2
R3
R4
R5
R6
R7
R8
TOTAL
193.4
229
248
231
214
217
234
272
252
1898
207.4
229
248
232
215
218
235
273
252
1901
INSTALLATION
UNIT SETTLEMENT
Models 121.4 – 171.4
Models 193.4 – 207.4
Models 193.4 – 207.4
28
Page 29
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
GLYCOL ADDITION to WATER (%)
TARGET FREEZING TEMPERATURE
0ºC
-2ºC
-5ºC
-10ºC
-15ºC
-20ºC
-25ºC
-30ºC
ETHYLENE GLYCOL
0%
6%
14%
24%
31%
36%
41%
45%
PROPYLENE GLYCOL
0%
7%
15%
25%
33%
39%
44%
48%
INSTALLATION
INSTALLATION OF WATER PIPES
The selection and installation of the components of the installation must be completed by a qualified installer technician according to the current local legislation and the rules of good practise. The design and calculations of the pipes will be made so that the pressure drop of the installation never exceeds the one that could beat the incorporated pump of the unit. Moreover a bad design of the pressure drops of the pipes that connect with the indoor units may cause the wrong operation of some of them.
Security devices
The installation of the following safety devices is MANDATORY when these elements ARE NOT included as standard features. Not complying with this condition will entail the LOSS OF WARRANTY.
Water filter
To be installed at the water inlet of the unit to protect the heat exchanger or any other critical components from
obstructions and/or clogging.
Flow switch or differential pressure switch
Protection of the water exchanger against breakage due to insufficient water flow which can lead to the total
disabling of the equipment. In case when there are more than one plate heat exchanger each of them shall be protected individually.
It is mandatory to install the flow switch at the water outlet of the machine with a straight horizontal section of 6 Ø
(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.
Antifrost management
The antifrost alarm will be activated when the water temperature reaches temperatures lower than 5°C.
The following actions will be taken by the equipment: Turning on or keeping the heat pump running and powering the antifrost resistance of the exchanger. These measures will be maintained as long as the water temperature remains below 12°C. These operating limits can be changed from factory according to the percentage of antifrost liquid. The chiller is equipped with a supply output to control the water circulation pump when it is not included within the unit. In case when the installer decides that the pump control shall not be made through the controller of the equipment,
he will have to make sure that this control will be completed properly.
If the equipment is turned on with existing ice in the exchanger, the exchanger may break down immediately despite a normal flow level and before the protection devices start working.
Any damaged equipment because of wrong or non-existent antifrost measures will not be covered by the warranty.
Risk of frost
Adding Glycol is a mandatory protection measure for all temperature levels of -2°C below the freezing point. If the unit or the water installation are exposed to temperatures below 5°C it is necessary to take the appropriate measures against the risk of frost (Please refer to the Safety Precautions section).
For example:
Mix the water of the installation with glycol. Protect the pipes with heating cables placed under the insulation lining.
Empty the installation and control at the same time that there are no:
Unclosed valves that may retain water even after draining the installation. Low spots where water may stagnate even after draining; if necessary proceed to blowing the installation.
Glycol additions
Keep in mind that the use of glycol solutions increases the pressure drop. Make sure that the type of glycol you will use is compatible with hydraulic circuit components (pumps. filters. etc.) and is a non-corrosive product.
29
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
INSTALLATION
REFRIGERATION DIAGRAM
EKWXBA HE 38.2 to 67.2
EKWXBA HE - 75.2 to 109.2
30
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
1. COMPRESSOR
2. 4-WAY VALVE
3. EXPANSION VALVE
4. CHECK VALVE
5. BIDIRECTIONAL FILTER
6. LIQUID TANK
7. PLATES HEAT EXCHANGER
8. SUCTION ACCUMULATOR (OPTION DEPENDING ON THE MODELS)
9. FINNED COIL
10. AXIAL FAN WITH EC MOTOR
B. WATER CIRCULATING PUMP EEV. ELECTRONIC EXPANSION VALVE PA. HIGH PRESSURE SWITCH PT. PRESSURE TRANSMITTER Pur. AIR DRAIN TAC. COMPRESSOR SUCTION TEMPERATURE PROBE TEA. WATER INLET TEMPERATURE PROBE TEV. EXPANSION VALVE. THERMOSTATIC TSA. WATER OUTLET TEMPERATURE PROBE Vc. DAMPER VALVE VS. RELIEF VALVE
OPTIONS:
PD - DIFFERENTIAL PRESSURE SWITCH VEx- EXPANSION TANK
ACCESSORIES:
FS - FLOW SWITCH FT - WATER FILTER
INSTALLATION
REFRIGERATION DIAGRAM
EKWXBA HE - 121.4 to 132.4
LEGEND
31
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
1. COMPRESSOR
2. 4-WAY VALVE
3. EXPANSION VALVE
4. CHECK VALVE
5. BIFLOW FILTER
6. LIQUID TANK
7. PLATES HEAT EXCHANGER
8. SUCTION ACCUMULATOR (OPTION DEPENDING ON THE MODELS)
9. FINNED COIL
10. AXIAL FAN WITH EC MOTOR
B. WATER CIRCULATING PUMP EEV. ELECTRONIC EXPANSION VALVE PA. HIGH PRESSURE SWITCH PT. PRESSURE TRANSMITTER Pur. AIR DRAIN TAC. COMPRESSOR SUCTION TEMPERATURE PROBE TEA. WATER INLET TEMPERATURE PROBE TEV. EXPANSION VALVE. THERMOSTATIC TSA. WATER OUTLET TEMPERATURE PROBE Vc. DAMPER VALVE VS. RELIEF VALVE
OPTIONS:
PD - DIFFERENTIAL PRESSURE SWITCH VEx- EXPANSION TANK
ACCESSORIES:
FS - FLOW SWITCH FT - FILTER
INSTALLATION
REFRIGERATION DIAGRAM
EKWXBA HE - 171.4 to 207.4
LEGEND
32
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
WARNING!
1. Power Supply 400V - 3F+N+PE - 50Hz
5. Water outlet
NSTALLATION
ELECTRICAL DATA
Put the main power switch in the OFF position before starting any type of operations.
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. Make sure that the compressor crankcase heater can be energized before unit starts. The interconnecting wires have to be placed in the protection tube or electrical cable conduits, cable trays. etc.
2. Main switch
3. MCX control
4. Water inlet
33
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
OPERATION LIMITS
38.2
44.2
47.2
55.2
59.2
67.2
75.2
95.2
109.2
Minimum water flow
m³/ h
4.4
5.0
5.6
6.5
7.2
7.9
9.1
11.9
13.6
Maximum water flow
m³/ h
10.4
11.8
13.3
15.5
17.2
18.8
21.6
28.3
32.3
Minimum water volume
l
186
217
233
272
292
328
365
472
530
Expansion tank
l
18
25
Max. water volume (7-50)ºC
l
717
1030
Minimum water flow
l
602
850
OPERATION LIMITS
121.4
132.4
171.4
193.4
207.4 Minimum water flow
m³/ h
14.3
15.6
20.4
23.0
24.6
Maximum water flow
m³/ h
34.0
37.2
48.4
54.7
58.4
Minimum water volume
l
297
325
423
478
511
Expansion tank
l
35
50
Max. water volume (7-50)ºC
l
1394
1992
Minimum water flow
l
1170
1672
INSTALLATION
Installation limits
The Maximum volume of water depends on the expansion tank and the max.-min. operating temperature.
34
Page 35
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
OPERATION LIMITS
COOLING MODE
HEATING MODE
35
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
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. Ensure that the unit is evenly levelled. Check that there is enough space for operation and maintenance. Make sure that the crankcase heater of each compressor has been operating during 24 hours prior to start-up. Make sure that the thermal or magnetothermic protection are slow-acting (D curve) to avoid wrong activations. Control that the air filters are clean and correctly fitted. For the units equipped with EC engines or frequency converters, it is very important that the differential switch is
a counter-current switch type B and we recommend a minimum 300 mA activation current to avoid the current cut off that could be caused by incorrect activations. The unit must not be supplied with any other voltage than the indicated voltage on the serial plate.
Check the rotation direction of the fans. Read the user manual.
START-UP
Start-up has to be performed by a qualified service personnel and specialised in air conditioning. It is necessary to register down the air inlet data 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.
Complete at least 3 cooling cycle operations.
36
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
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. Screen with display that shows the inputs and outputs. Operating mode: 2 compressors, cooling only and heat pump. Programmable controller with 3 access levels: User L0, Maintenance L1
and Manufacturer L2 and L3.
Main Functions of the standard Control System
Temperature control according to the outlet water
temperature.
Intake and outlet water temperature displays, as
well as pressure reading displays in evaporator and condenser stages. Display of outdoor temperature and fan flow percentage.
Pressure overload safety protection. Safety action antifrost resistance. Remote ON/OFF.
Options
Possibility to enable the compensation of the outlet water temperature with the outdoor temperature. The access
level is manufacturer L2.
Possibility to change the regulation of water temperature by inlet water temperature without outdoor temperature
compensation possibility. The manufacturer access level L3 is required. The units equipped with buffer tank must not be regulated by inlet.
Service hour counter for compressors and water pumps. Prepared for protection by water flow. Time scheduler.
Remote change of the cool/heat operating mode. Speed regulation control according to the condenser
and evaporator pressure.
Check valve for cycle reversion. Antifrost feature. Antifrost start and stop settings
through pressure readings. Antifrost duration time control.
Control of the recirculation pump.
37
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
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. Operating mode: 4 compressors, cooling only and heat pump. Defrosting by pressure transducers. Programmable controller with 3 access levels: User L0, Maintenance L1,
Manufacturer L2 and L3.
Main Functions of the Control System
Temperature control by inlet temperature. Control by outlet water temperature or compensation for outdoor
temperature is not available.
Inlet and outlet water temperature reading displays as well as pressure reading displays in evaporator and
condenser stages. Display of outdoor temperature and fan flow percentage.
Pressure overload safety protection. Safety action anti-freezing resistance. Remote ON/OFF. Remote change of the cool/heat operating mode. Condensing and evaporating pressure control. Control of the electronic expansion valve as standard in models 171.4. 193.4. 207.4 Check valve for cycle reversion (only available for Heat Pump units). Antifrost feature. Antifrost start and stop settings through pressure readings. Control of the recirculation pump.
Options
Service hour counter for compressors and water pumps. Time scheduler. Prepared for protection by water flow. Compressor start timers.
38
Page 39
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
Cooling Mode
Defrost
Heating Mode
Electrical resistance working
Water pump operating
Active Alarm Compressor working
Outdoor fan(s) working
Stopped, Current date
Current T.
Setpoint T.
Heat mode
Cooling mode
Start, Date
DISPLAY “A” DISPLAY “B” ALARMS / WARNINGS
Compressor
Outdoor fan
Water pump
Antifrost resistance
Cooling-Heating mode/Defrosting
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. If no Cooling/Heating switch has been
installed (or a remote selector) that would keep the control connections opened, then the start-up mode will always be the cooling mode.
SYMBOLS
39
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IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
(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. If the unit is running, it needs to stop before switching modes and then it must be started up once again.
(ESC) Shortcut to the ALARMS menu.
(RETURN) This key takes the user to the MAIN MENU screen when pressed in the START MENU screen.
It is also used to enter menus for other selected options.
LCD Display
Description
- Unit Status
Option depending on the machine – state of the unit
- Login
Key introduction for access level
- Arranque
Commissioning menu.
- Parámetros
Configurations of the operating parameters
- Input/Output
Depending on Options. inputs and outputs configuration
- Alarmas
Alarms menu
- Config EEV
Only with Electronic expansion valves
- Clock
Time schedule
- Language
Language configuration
- Servicio
Service menu
- Cuentahoras
Hour counter
(UP) (DOWN) It allows the movement through a field in one position, Upper/Lower. If you are editing, they modify the value of the number, the character or the field.
(LEFT) (RIGHT) It allows the movement from one character to
another to the left or to the right inside a word or number.
(ESC) Returns to the previous level display.
(RETURN) Moves forward to the next screen or sublevel of a
highlighted option.
OPERATION
THERMOSTAT AND CONTROL
MCX controller operation
Keyboard operation:
MAIN MENU
Movements through different menu levels:
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Quick view of the state of the parameters and values of the unit.
There are 3 access levels to the different parameters or configuration fields of the unit. Modifies the value and changes the
value.
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.
The unit starts in the selected previous mode.
Shutdown.
The unit shuts down according to the established times.
Network. Start of the networked units. Heat /Cool. The assigned mode at the unit is changed.
OFF: No reading shown. IdOF: ON/OFF state. Set: Set point value for current operating mode (Default setting). rEg: (Varies according to the model of the unit) AI1: Intake water temperature. AI2: Outlet water temperature
OPERATION
THERMOSTAT AND CONTROL
MCX controller operation
UNIT STATUS
LOGIN
START UP
PARAMETERS
The access to the control parameters is restricted depending on the Access level of the user.
General>Display
Display value “A”.
Select the reading to be shown in display screen A when the unit is running. By default the reading shown on the display screen A when the unit is shut down is “OFF”.
OFF: No reading shown. IdOF: ON/OFF state. Set: Set point value for current operating mode. rEg: (Varies according to the model of the unit) AI1: Intake water temperature (Default setting). AI2: Outlet water temperature.
Display screen “B”.
Select the Reading to be shown in display screen B.
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OFF: The unit is in the pause mode or turned off. ON: The unit starts up. EQUA: The unit goes back to the same state as it was before
the power supply shortcut.
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.
Y01: ON/OFF system.
Shows if the unit is ON or OFF and allows to turn on (ON) or stop the unit (OFF).
Y02: Start-up mode after disconnection.
After disconnecting the power supply it indicates to the control the new restart state.
Y03: HEAT/COOL System
Shows the actual mode COOL/HEAT at the same time it allows to change the mode. If previously the unit was operating; first it stops, then it changes the mode and starts operating again.
Y08: Scheduler enable.
It is used to activate or deactivate the scheduler.
INPUT/OUTPUT
Input/Output>I/O Values
Access to 3 displays that show all the input and output values; each display shows a group of 8 I / O. Use the UP and DOWN keys to scroll. The second and the third display are used for MCX15 and MCX20. The example below shows the first display.
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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.
By means of the y01 parameter (Refer to the previous section or the parameters list)  By means of the digital input of remote Start/Stop (Refer to the wiring diagram of the unit).
Setpoint Temperature Change
The default values may vary according to the unit. Select in the Main Menu PARAMETERS>REGULATION>Setpoint
SC1: Setpoint temperature in the cooling mode
Sets the Setpoint value in Celsius degrees for the operation of the unit in the cooling mode. By default the value is 7.0°C but it can vary between 3.0 and 17.0.
SCL: Inferior Cold Setpoint limit (L03).
This is used to set the lowest limit of the Set point temperature in the cooling mode. The default value is 3.0. Use glycol for water temperature lower than 5 ºC.
SCH: Upper Cold Setpoint limit (L03). This is used to set the highest limit of the Setpoint temperature in the cooling mode. The default value is 17.0.
SH1: Heating Setpoint Temperature Sets the value of set point temperature in Celsius degrees for the operation in the heating mode. The default value is
45.0 but it can vary between 35.0 and a maximum temperature of 54.0.
SHL: Lower Setpoint Heating limit (L03). This is used to set the lowest limit of the Setpoint in the heating mode. The default value is 35.0.
SHH: Superior Setpoint Heating limit (L03). This is used to set the highest limit of the Setpoint temperature in the heating mode. The default value is 5.0.
It is possible to modify the limits values for the setpoints adjustment by entering with L3 access. (Refer to the regulation parameters section).
OPERATION MODE SELECTION
The active operation mode of the heat pumps is shown on the start display of the MCX controller. The following options are available for changing the operation mode:
Press the key DOWN during 3s.
This option can be enabled or disabled through the parameter rE2 (Menu > “Parameters”>“Reversing valve”> “Configuration”.
Through the start-up Menu (Menu.> “ Start-up” > “Hot/Cold”) Through the y03 parameter (Menu >“Parameters”>“General”>“Setup”. (Check Parameters list)  Through the digital input of Hot/Cold remote (Check the wiring diagram of the unit)
Temperature Regulation Mode Configuration.
It can be modified only by accessing at level 1. Main Menu - PARAMETERS- REGULATION – Configuration
rEg Regulation probe.
AI6: By default, ANALOG INPUT nº6 probe: water outlet. Tin: Water inlet Temperature. AI8: By default, unit with tank. ANALOG INPUT nº8 probe: Water outlet unit with tank.
rEt: Regulation type.
By default “dZ” (Tout – regulation by outlet water temperature)
Disabling one compressor
It can be modified only by accessing at level 1. Main menu – PARAMETERS >Compressors >Enabling C71: allows disabling compressor 1. C72: Disables compressor 2.
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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. Each alarm is described by:
o Description of the alarm. o Alarm code. o Time from its activation, in format hour: minute: seconds.
NOTE: You can also access to the display of alarms by pressing the ESC key from the main display.
Sub-menu: ALR – Alarms Reset
Reset of the active alarms (Only for alarms of manual rearm). Press ENTER to rearm all manual alarms.
NOTE: This action can also be executed by pressing the ESC key during 3 s when an alarm display is being shown.
Sub-menu: AHS – Alarm History
Alarm history. For each alarm register (up to 10) the following information is displayed (in the order starting from up to down)
o Alarm description o Alarm code o Date and hour of the activation o Date and hour of the deactivation (if any) o Register number (backwards): #1 is the last active alarm.
Use the UP and DOWN keys to move through the alarm list.
Time Programming
Main Menu.> CLk – Clock >
RTC– RTC (Real time clock) Configuration.
Use UP and Down keys to change the field that you want to edit (marked by the cursor).The following fields appear: “yy –year”. “nn – month”. “dd – day”. “hh – hour”. “ññ – minutes” and “ss – seconds”. Use the ENTER key to enter in the edition mode in each field. UP and DOWN again to modify the value. ENTER for validating and changing to the next field. ESC for leaving the menu.
SCH–Scheduler Configuration.
The y08 parameter has to be enabled to configure the scheduler. Up to 10 configurations can be scheduled. Use the UP and DOWN keys to change between schedules when there is no field selected. Press ENTER to select then validate and change the field. In the following figure, the first register “Schedule #1” starts up the machine at “00:00” Mondays “Mo”. Wednesdays “We” and Saturdays “Sa”.
and DOWN to modify the value. ENTER validates the change and selects the following field. ESC to leave.
Time: Start time. Action: Type of action press UP: ON or DOWN: OFF to switch
On or Off the machine. Week day: day of the week in which the action will be carried out (The field is selected between “Mo” and “We” which corresponds to Tuesday).
Use the ENTER key to select a field (colours are reversed). Use UP
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Main Control MCX08M
POSITION
ANALOGIC INPUT
DIGITAL INPUT
ANALOGIC OUTPUT
DIGITAL OUTPUT
1
Compressor Protection 1
Differential presostato / Flow switch
Not used
Compressor 1
2
Compressor Protection 2
Remote Start/Stop
Not used
Compressor 2
3
Cond. / Evap. Pressure. Cold/Heat.
Second SETPOINT.
0-10V Output
Condensation control
4 way valve (ONLY
available with Heat Pump
units)
4
Evap. / Cond. Pressure. Cold/Heat.
Outdoor fan thermal sensors.
Not used
Antifrost resistance
5
Inlet Water Temperature
Safety high pressure switch.
-
Outdoor Fans
6
Outlet Water Temperature
Remote Cool/Heat selector
-
Water pump
7
Outdoor Temperature.
Thermal protection for Water pump
-
- 8 -
-
-
Alarm Output
Main Control MCX15B
POSITION
ANALOGIC INPUT
DIGITAL INPUT
ANALOGIC OUTPUT
DIGITAL OUTPUT
1
Inlet Water Temperature
Differential presostato / Flow switch
0-10V Output.
Condensation control 1
Compressor 1 circ.1
2
Outlet Water Temperature circuit 1
Thermal protection Compressor 1
0-10V Output.
Condensation control 2
Compressor 2 circ.1
3
Outlet Water Temperature circuit 2
Thermal protection Compressor 2.
4 way valve circ.1
4
Cond./ Evap. pressure Cool/Heat
circuit 1
Outdoor fan thermal sensors circ.1
Anti-frost resistance
circ.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
4 way valve circ.2 8
Second SETPOINT.
Anti-frost resistance
circ.2
9 Thermal protection Compressor 3
10 Thermal protection Compressor 4
11 Outdoor fan thermal sensors circ.2
Fan Operation circ.1
12
Safety high pressure switch Circuit
2
Fan Operation circ.2
13 Thermal protection for Water pump
Water Pump (for 1-pump
KIT)
14
15
Alarm Output
OPERATION
THERMOSTAT AND CONTROL
Input and output
Models 38.2 - 109.2
Models 121.4 – 207.4
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Code
Description
Reset type
Active
with unit
OFF
Relay
Alarm
Output
Warning
Relay
Output
Circuit or
System
Compr.
Pump Evap.
Fan
Cond.
Heaters
A01
General alarm
Auto
False
True
False
SYSTEM
OFF
OFF
OFF
OFF
A02
General overload alarm
Auto
False
True
False
SYSTEM
OFF
OFF
OFF
OFF
A03
Evaporator flow switch alarm
Semi-Auto
False
True
False
SYSTEM
OFF
OFF
OFF
OFF
A04
Condenser flow switch alarm
Semi-Auto
False
True
False
SYSTEM
OFF
OFF
OFF - A07
Lowest air temperature alarm
Auto
False
False
True
NO - - - -
A09
High temperature
Auto
False
False
True
NO - - - -
A10
Evaporator pump service time limit exceeded
Auto
False
False
True
NO - - - -
A11
Evaporator pump 2 service time limit exceeded
Auto
False
False
True
NO - - - -
A12
Condenser fan service time limit exceeded
Auto
False
False
True
NO - - - -
A13
Maximum anti-frost time exceeded
Auto
False
False
True
NO - - - -
A50
General fan thermal protection
Auto
False
True
False
SYSTEM
OFF - OFF
OFF
A51
Condenser fans thermal protection Circ.1
Auto
False
True
False
CIRCUIT 1
OFF - OFF
OFF
A52
Condenser fans thermal protection Circ.2
Auto
False
True
False
CIRCUIT 2
OFF - OFF
OFF
A61
Comp1 maximum operation time exceeded
Auto
False
False
True
NO - - - -
A62
Comp2 maximum operation time exceeded
Auto
False
False
True
NO - - - -
A63
Comp3 maximum operation time exceeded
Auto
False
False
True
NO - - - -
A64
Comp4 maximum operation time exceeded
Auto
False
False
True
NO - - - -
A7A
Alr. Probe Tin Evaporator
Auto
True
True
False
SYSTEM
OFF
OFF
OFF
OFF
A7B
Alr. Probe Tout Evaporator1
Auto
True
True
False
NO - - - -
A7C
Alr. Probe Tout Evaporator2
Auto
True
True
False
NO - - - -
A7F
Alr. Probe Tout Evap Mix
Auto
True
True
False
NO - - - -
A7G
Alr. Probe Discharge Press C1
Auto
True
True
False
CIRCUIT 1
OFF - - - A7H
Alr. Probe Discharge Press C2
Auto
True
True
False
CIRCUIT 2
OFF - - - A7K
Alr. Probe Tout
Auto
True
True
False
NO - - - -
A7L
Alr. Probe Remote Set
Auto
True
True
False
NO - - - -
A7M
Alr. Probe Tout Condenser1
Auto
True
True
False
CIRCUIT 1
- - -
OFF
A7N
Alr. Probe Tout Condenser2
Auto
True
True
False
CIRCUIT 2
- - -
OFF
A7Q
Alr. Probe T ComboDefrostC1
Auto
True
True
False
NO - - - -
A7R
Alr. Probe T ComboDefrostC2
Auto
True
True
False
NO - - - -
A7V
Alr. Probe Suction Press C1
Auto
True
True
False
CIRCUIT 1
OFF - - - A7W
Alr. Probe Suction Press C2
Auto
True
True
False
CIRCUIT 2
OFF - - - A8A
Alr. Probe Discharge Temp C1
Auto
True
True
False
NO - - - -
A8B
Alr. Probe Discharge Temp C2
Auto
True
True
False
NO - - - -
A8W
Alr. Probe Suct Temp C1
Auto
True
True
False
NO - - - -
A8X
Alr. Probe Suct Temp C2
Auto
True
True
False
NO - - - -
A90
General Thermal Resistances
Auto
False
True
False
SYSTEM
- - -
OFF
A91
Circuit 1 Thermal Resistances
Auto
False
True
False
CIRCUIT 1
- - -
OFF
A92
Circuit 2 Thermal Resistances
Auto
False
True
False
CIRCUIT 2
- - -
OFF
AC0
General Thermal Compressor Alarm
Manual
False
True
False
SYSTEM
OFF
OFF
OFF
OFF
Ac1
Thermal Compressor 1 alarm
Manual
False
True
False
NO
OFF - - - Ac2
Thermal Compressor 2 alarm
Manual
False
True
False
NO
OFF - - - Ac3
Thermal Compressor 3 alarm
Manual
False
True
False
NO
OFF - - - Ac4
Thermal Compressor 4 alarm
Manual
False
True
False
NO
OFF - - - AE1
Anti-freeze circuit 1
Semi-Auto
True
True
False
CIRCUIT 1
OFF - - - AE2
Anti-freeze circuit 2
Semi-Auto
True
True
False
CIRCUIT 2
OFF - - - AF1
Thermal Protection Fan Circuit 1
Auto
False
True
False
NO - -
OFF - AF10
Thermal Protection Fan Circuit 10
Semi-Auto
False
True
False
NO - -
OFF - AF11
Thermal Protection Fan Circuit 11
Semi-Auto
False
True
False
NO - -
OFF - AF12
Thermal Protection Fan Circuit 12
Semi-Auto
False
True
False
NO - -
OFF - AF2
Thermal Protection Fan Circuit 2
Auto
False
True
False
NO - -
OFF - AF3
Thermal Protection Fan Circuit 3
Auto
False
True
False
NO - -
OFF - AF4
Thermal Protection Fan Circuit 4
Semi-Auto
False
True
False
NO - -
OFF
-
AF5
Thermal Protection Fan Circuit 5
Semi-Auto
False
True
False
NO - -
OFF - AF6
Thermal Protection Fan Circuit 6
Semi-Auto
False
True
False
NO - -
OFF - AFA
Fan defect
Auto
False
True
False
SYSTEM
OFF - - - AH0
High pressure general alarm
Manual
False
True
False
SYSTEM
OFF - - - AH1
High Pressure general alarm Circuit 1
Manual
False
True
False
CIRCUIT 1
OFF - - - AH2
High Pressure general alarm Circuit 2
Manual
False
True
False
CIRCUIT 2
OFF - - - AIT
Tout Ice alarm
Semi-Auto
True
True
False
SYSTEM
OFF - - - AL0
Low Pressure general alarm
Semi-Auto
False
True
False
SYSTEM
OFF - - - AL1
Low Pressure general alarm circuit 1
Semi-Auto
False
True
False
CIRCUIT 1
OFF - -
-
AL2
Low Pressure general alarm circuit 2
Semi-Auto
False
True
False
CIRCUIT 2
OFF - - - AM0
General high suct press alarm
Semi-Auto
False
True
False
NO - - - -
AM1
Circuit1 high suct press alarm
Semi-Auto
False
True
False
NO - - - -
OPERATION
THERMOSTAT AND CONTROL
Alarms MCX
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AXIAL FANS
Code
Description
Reset type
Active
with unit
OFF
Relay
Alarm
Output
Warning
Relay
Output
Circuit or
System
Compr.
Pump Evap.
Fan
Cond.
Heaters
AM2
Circuit2 high suct press alarm
Semi-Auto
False
True
False
NO - - - -
AP0
General Evaporator Pump
Manual
False
True
False
SYSTEM
OFF
OFF
OFF
OFF
AP1
Thermal protection water pump 1
Auto
False
True
False
SYSTEM
OFF
OFF
OFF
-
AP2
Evaporator pump 2 overload alarm
Auto
False
True
False
NO - OFF - -
AP3
Evap. fan 3 overload alarm
Auto
False
True
False
NO - OFF - -
AP4
Evap. fan 4 overload alarm
Auto
False
True
False
NO - OFF - -
AP5
Evap. fan 5 overload alarm
Auto
False
True
False
NO - OFF - -
AP6
Evap. fan 6 overload alarm
Auto
False
True
False
NO - OFF - -
AP9
Backup pump running
Auto
False
False
True
NO - - - -
Ar1
Thermal resistances 1 alarm
Auto
False
True
False
NO - - - OFF
Ar2
Thermal resistances 2 alarm
Auto
False
True
False
NO - - - OFF
Ar3
Thermal resistances 3 alarm
Auto
False
True
False
NO - - - OFF
Ar4
Thermal resistances 4 alarm
Auto
False
True
False
NO - - - OFF
AV0
General vacuum alarm
Semi-Auto
False
True
False
SYSTEM
OFF - -
-
AV1
Circuit 1 vacuum alarm
Semi-Auto
False
True
False
CIRCUIT 1
OFF - -
-
AV2
Circuit 2 vacuum alarm
Semi-Auto
False
True
False
CIRCUIT 2
OFF - - - Cn
Expansion communication fault
Auto
True
True
False
NO - - - -
dp0
General low delta pressure
Auto
False
True
False
SYSTEM
OFF
OFF
OFF
OFF
dP1
Circ 1 low delta pressure
Auto
False
True
False
CIRCUIT 1
OFF - -
OFF
dP2
Circ 2 low delta pressure
Auto
False
True
False
CIRCUIT 2
OFF - -
OFF
dt0
General high discharge temp.
Auto
False
True
False
SYSTEM
OFF
OFF
OFF
OFF
dT1
Circ 1 high discharge temp.
Auto
False
True
False
CIRCUIT 1
OFF - -
OFF
dT2
Circ 2 high discharge temp.
Auto
False
True
False
CIRCUIT 2
OFF - -
OFF
E10
EEV1 Connection
Manual
True
True
False
CIRCUIT 1
OFF - -
-
E11
EEV1 Connection
Auto
True
True
False
NO - - - -
E12
EEV1 S2 Error
Manual
False
True
False
CIRCUIT 1
OFF - -
-
E13
EEV1 S4 Error
Manual
False
True
False
CIRCUIT 1
OFF - -
-
E14
EEV1 Pe Error
Manual
False
True
False
CIRCUIT 1
OFF - - - E15
EEV1 Ext Ref Error
Manual
False
True
False
CIRCUIT 1
OFF - - - E16
EEV1 NO Refrig. Selected
Manual
False
True
False
CIRCUIT 1
OFF - - - E17
EEV1 Valve Error
Manual
False
True
False
CIRCUIT 1
OFF - - - E18
EEV1 Low Battery
Manual
False
True
False
CIRCUIT 1
OFF - -
-
E19
EEV1 CAN driver diagnostics
Manual
False
True
False
CIRCUIT 1
OFF - -
-
E20
EEV2 Connection
Manual
True
True
False
CIRCUIT 2
OFF - - - E21
EEV2 Connection
Auto
True
True
False
NO - - - -
E22
EEV2 S2 Error
Manual
False
True
False
CIRCUIT 2
OFF - - - E23
EEV2 S4 Error
Manual
False
True
False
CIRCUIT 2
OFF - - - E24
EEV2 Pe Error
Manual
False
True
False
CIRCUIT 2
OFF - -
-
E25
EEV2 Ext Ref Error
Manual
False
True
False
CIRCUIT 2
OFF - -
-
E26
EEV2 NO Refrig. Selected
Manual
False
True
False
CIRCUIT 2
OFF - - - E27
EEV2 Valve Error
Manual
False
True
False
CIRCUIT 2
OFF - - - E28
EEV2 Battery low
Manual
False
True
False
CIRCUIT 2
OFF - - - E29
EEV2 CAN driver diagnostics
Manual
False
True
False
CIRCUIT 2
OFF - - - FC1
FC inv. 1 alarm condition
Auto
False
True
False
NO
OFF - -
-
FC2
FC inv. 2 alarm condition
Auto
False
True
False
NO
OFF - -
-
FRC
Free Cooling fan overload
Auto
False
True
False
NO - - - -
MB1
Modbus Inv 1 Comm. Error
Auto
False
True
False
NO
OFF - - - MB2
Modbus Inv 2 Comm. Error
Auto
False
True
False
NO
OFF - - - N01
Network error
Auto
True
True
False
SYSTEM
OFF - - - N02
Master error
Auto
True
False
True
SYSTEM
OFF - -
-
N03
Alarm node 1
Auto
True
False
True
NO - - - -
N04
Alarm node 2
Auto
True
False
True
NO - - - -
N05
Alarm node 3
Auto
True
False
True
NO - - - -
N06
Alarm node 4
Auto
True
False
True
NO - - - -
N07
Alarm node 5
Auto
True
False
True
NO - - - -
N08
Alarm node 6
Auto
True
False
True
NO - - - -
N09
Alarm node 7
Auto
True
False
True
NO - - - -
N10
Alarm node 8
Auto
True
False
True
NO - - - -
OIL
Oil Pump Overload
Auto
False
True
False
NO - - - -
ORW
Manual output override
Auto
True
False
True
NO - - - -
SH1
High superheat on C1
Auto
False
True
False
NO - - - -
SH2
High superheat on C2
Auto
False
True
False
NO - - - -
SL1
Low superheat on C1
Auto
False
True
False
CIRCUIT 1
- - -
-
SL2
Low superheat on C2
Auto
False
True
False
CIRCUIT 2
- - -
-
47
Page 48
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
Acid.
current direction)
pops.
operation.
WARNING!
MAINTENANCE
MAINTENANCE AND CLEANING
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.
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
- It is advisable to schedule maintenance visits every 1.000 operating hours and at the beginning of each cooling season as well.
- Repairing works must be carried out by trained specialists only.
- Wear safety shoes and gloves for handling!
- Please observe the safety regulations and the worker’s protection rules for all maintenance and service work (EN 50 110. IEC 364).
- No maintenance work when the fan is running! Warning because fans can rotate without power supply, e.g. pushed by air currents.
- Make use of fire protections in brazing operations.
- In case of leaks any manipulation and/or recovery of refrigerant will be made by qualified and authorized personnel in accordance with the existing rules. Add the quantity of oil that has been lost.
Precaution!
Do not use aggressive cleaning products nor varnish solvents.  Avoid the entrance of water inside the motor or to the electronic components (e.g. through the direct contact with
joints or holes of the motor), observe the protection class (IP).
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.
Refrigeration circuit: Check for oil or refrigerant leaks, noises or system’s vibration. Take measurements of the temperatures and pressures of the components and register them on the maintenance form.
Water circuit: Check for water leaks as well as noise and vibrations of system elements. Register the water pressure values at the inlet and outlet of the pump and other system elements. Clean the filter and the flow valve (if installed). This operation shall be completed regularly to prevent dirt from remaining on site and obstructing the flow Access. Make sure to be informed of the local regulations and requirements regarding maintenance of water equipments.
Heat exchanger: Check inlet and outlet temperature, verify water flow and verify the safety systems. It is necessary at least once a year to clean the heat exchanger. The heat exchanger is cleaned by making the cleaning liquid circulate. Use an acid store (5% phosphorous acid and if necessary more frequent cleaning use 5% oxalic acid. maximum 8% in weight: 80 g/l). Introduce the cleaning fluid through the exchanger. To achieve an effective cleaning, the acid must circulate at a speed of at least 1.5 times the one of the normal water and if possible in the opposite direction. After that the circuit shall be cleaned with plenty of water to remove traces of acid. Refill with new water and start up the unit.
48
Page 49
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
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.
A regular inspection of the unit is required. The inspection frequency depends on the working conditions to avoid dirt accumulation in propellers, turbines, motors and grids that could entail risks and significantly shorten the life of the fan. Keep the airways of the fan free – danger because of objects dropping out! It is necessary to check the free flow of the condensation water evacuation openings (if there are any) that are appropriate for set up position. In cleaning operations be very careful not to unbalance the propeller or the turbine. In case of improper cleaning work no guarantee is assumed regarding corrosion formation / paint adhesion for unpainted / painted fans. To avoid humidity accumulation in the motor, the fan must be operated for at least 1 hour at 80% to 100% of the maximum speed before cleaning! After the cleaning process, the fan must be operated for 2 hours at 80% to 100% of the maximum speed for drying purposes! Check the fan regularly for mechanical vibrations (recommended every 6 months). Keep in mind the limit values indicated on ISO 14694 and perform correction measures in case of exceeding them (e.g. posterior balance by trained specialists). Control the impeller and in particular the weld-seams for possible cracks. Motors and fans do not need additional lubrication due to the use of ball bearings with “life-long lubrication”. At the end of the grease life (30-40.000h approx.) it is necessary to change the bearing. Please contact our Service Department in this case as for all other damage (e.g. to the coil or electronics).
Coils: At least once a year clean the condenser coils with water and detergent and dry them afterwards with air at low pressure. Never clean with a wire brush, water and/or air at high pressure.
Compressor: Periodically check the lubricant level, the presence of vibrations or noise and motor insulation.
REPAIRING OPERATIONS
In every maintenance and repairing operation the current safety rules of each country have to be checked. It is forbidden to do brazing repairing operations on mechanic elements such as fans, compressors, valves. etc…
Use only spare parts/ wear parts / original accessories from the fan manufacturer. These parts have been conceived especially for the unit. If you use parts from other manufacturers it is not guaranteed that they have been manufactured to resist loads that will be met or that they meet the relevant safety requirements. It is prohibited to use parts and special equipment that have not been supplied by the manufacturer on these equipments.
Fan with EC motor: Due to safety reasons you are not allowed to make interventions or modifications on your own on the unit. Any planned modification must be approved and documented by the manufacturer.
LUBRICANT
R-410A refrigerant compressors use synthetic polyolester oil. Each compressor manufacturer has a specific oil for your product. The compressor or system should not remain open to atmosphere for more than 15 minutes. Synthetic ester-type lubricants (POE. Polyol Ester) with a high solubility with R-410A are used. Since these types of oils are very hygroscopic you shall be more careful when handling them than with conventional oils. Moreover when these synthetic oils are mixed with minerals (MO) or alkylbenzenes (AB) they deteriorate and may cause capillary blockage or failure in the compressor.
Do not mix them under any circumstances.
49
Page 50
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
with oil, which can cause an explosion resulting in damage, personal injury or death.
WARNING!
Burning refrigerant 410A produces toxic gas emissions.
WARNING!
MAINTENANCE
REFRIGERANT CHARGE
Never use oxygen to pressurize the system or purge lines for leak test. Oxygen reacts violently
Should it be necessary to add or recover refrigerant use an electronic scale that is properly reinforced and
prepared to withstand the handling of the refrigerant bottle.
The charge must be made in LIQUID condition. The inlet of liquid refrigerant R-410A in the empty tubes causes temperatures below 0ºC until the internal
pressure reaches 7 bars.
If it is necessary to make brazing operation, fill the circuit with dry nitrogen as a first step.
Leaks should be repaired immediately. Never overcharge the system. Never use compressor as vacuum pump. If leakage symptoms appear during the operation completing a leak test will be necessary. To find small leaks you will need a detector for HCF. If a gas leak is detected you shall remove and recuperate the complete refrigerant charge. Pressurize system
with dry nitrogen. If no leakage has been detected proceed to vacuum and charge with refrigerant.
Do not reintroduce used refrigerant. Bring it to an authorized recycling plant.
50
Page 51
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
38.2
44.2
47.2
55.2
59.2
67.2
75.2
Only cooling configuration
○ ○ ○ ○ ○
○
○
Rubber – Metal anti-vibratory supports
○ ○ ○ ○ ○
○
○
Axial variable speed fans with EC motor.
● ● ● ● ●
●
●
Axial variable speed fans with EC motor and available pressure.
○ ○ ○ ○ ○ ○ ○
Axial fans with PKDM regulation.
○ ○ ○ ○ ○ ○ ○
Thermal expansion valve
● ● ● ● ● ● x
Electronic expansion valve
X x x x x x ●
Suction accumulator
○ ○ ○ ○ ○ ○ ○
ON/OFF Scroll compressor
● ● ● ● ● ● ●
Acoustic insulation on the compressor
● ● ● ● ○ ○ ○
Cover for high acoustic attenuation compressor
○ ○ ○ ○ ○ ○ ○
Water pump low available pressure
● ● ● ● ● ● ●
Water pump high available pressure
○ ○ ○ ○ ○ ○ ○
Reserve water pump low available pressure
○ ○ ○ ○ ○ ○ ○
Reserve water pump high available pressure
○ ○ ○ ○ ○ ○ ○
Buffer tank
○ ○ ○ ○ ○ ○ ○
Support immersion resistance in tank
○ ○ ○ ○ ○ ○ ○
Expansion tank
○ ○ ○ ○ ○ ○ ○
Water filter
○ ○ ○ ○ ○ ○ ○
Flow switch
○ ○ ○ ○ ○ ○ ○
Water connection Gas Thread
○ ○ ○ ○ ○ ○ ○
Differential pressure switch
○ ○ ○ ○ ○ ○ ○
Coils with GALVAL treatment
○ ○ ○ ○ ○ ○ ○
Coils with BLYGOLD treatment
○ ○ ○ ○ ○ ○ ○
Coils with LCE Coating treatment
○ ○ ○ ○ ○ ○ ○
Wall Remote MCX controller
○ ○ ○ ○ ○ ○ ○
ModBus card
● ● ● ● ● ● ●
Hydrofan chiller control
○ ○ ○ ○ ○ ○ ○
Management up to 20 units: Hydrofan touch screen.
○ ○ ○ ○ ○ ○ ○
Management up to 40 units: Hydrofan double touch screen
○ ○ ○ ○ ○ ○ ○
Management up to 90 units: Plan Visor Boss STD
○ ○ ○ ○ ○ ○ ○
Management up to 300 units: Plan Visor Boss Hyper
○ ○ ○ ○ ○ ○ ○
Magnetothermic and thermic relays in motors
● ● ● ● ● ● ●
Inlet water temperature control
○ ○ ○ ○ ○ ○ ○
Outlet water temperature control
● ● ● ● ● ● ●
Outdoor compensation temperature
● ● ● ● ● ● ●
Outdoor temperature probe
● ● ● ● ● ● ●
Coils protection grid
○ ○ ○ ○ ○ ○ ○
●
Available as standard
○
Available as option
x
Not available
OPTIONS / ACCESSORIES
*Please contact our Sales Department for any other configuration or function that is not mentioned above.
51
Page 52
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
95.2
109.2
121.4
132.4
171.4
193.4
207.4
Only cooling configuration
○ ○ ○ ○ ○ ○ ○
Rubber – Metal anti-vibratory supports
○ ○ ○ ○ ○ ○ ○
Axial variable speed fans with EC motor.
● ● ● ● ● ● ●
Axial variable speed fans with EC motor and available pressure.
○ ○ ○ ○ ○ ○ ○
Axial fans with PKDM regulation.
○ ○ ○ ○ ○ ○ ○
Thermal expansion valve
x x ● ● x x x
Electronic expansion valve
● ● x x ● ● ●
Suction accumulator
○ ○ ○ ○ ○ ○ ○
ON/OFF Scroll compressor
● ● ● ● ● ● ●
Acoustic insulation on the compressor
○ ○ ○ ○ ○ ○ ○
Cover for high acoustic attenuation compressor
○ ○ ○ ○ ○ ○ ○
Water pump low available pressure
● ● ● ● ● ● ●
Water pump high available pressure
○ ○ ○ ○ ○ ○ ○
Reserve water pump low available pressure
○ ○ ○ ○ ○ ○ ○
Reserve water pump high available pressure
○ ○ ○ ○ ○ ○ ○
Buffer tank
○ ○ ○ ○ ○ ○ ○
Support immersion resistance in tank
○ ○ ○ ○ ○ ○ ○
Expansion tank
○ ○ ○ ○ ○ ○ ○
Water filter
○ ○ ○ ○ ○ ○ ○
Flow switch
○ ○ ○ ○ ○ ○ ○
Water connection Gas Thread
○ ○ ○ ○ ○ ○ ○
Differential pressure switch
○ ○ ○ ○ ○ ○ ○
Coils with GALVAL treatment
○ ○ ○ ○ ○ ○ ○
Coils with BLYGOLD treatment
○ ○ ○ ○ ○ ○ ○
Coils with LCE Coating treatment
○ ○ ○ ○ ○ ○ ○
Wall Remote MCX controller
○ ○ ○ ○ ○ ○ ○
ModBus card
● ● ● ● ● ● ●
Hydrofan chiller control
○ ○ ○ ○ ○ ○ ○
Management up to 20 units: Hydrofan touch screen.
○ ○ ○ ○ ○ ○ ○
Management up to 40 units: Hydrofan double touch screen
○ ○ ○ ○ ○ ○ ○
Management up to 90 units: Plan Visor Boss STD
○ ○ ○ ○ ○ ○ ○
Management up to 300 units: Plan Visor Boss Hyper
○ ○ ○ ○ ○ ○ ○
Magnetothermic and thermic relays in motors
● ● ● ● ● ● ●
Inlet water temperature control
○ ○ ● ● ● ● ●
Outlet water temperature control
● ● x x x x x
Outdoor compensation temperature
● ● x x x x x
Outdoor temperature probe
● ● ● ● ● ● ●
Coils protection grid
○ ○ ○ ○ ○ ○ ○
●
Available as standard
○
Available as option
x
Not available
OPTIONS / ACCESSORIES
*Please contact our Sales Department for any other configuration or function that is not mentioned above.
52
Page 53
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
EKWXBA HE
38.2
44.2
47.2
55.2
59.2
67.2
OPTIONS
COOLING ONLY OPTION
(1)
Total refrigerant charge
kg
9.8
10.0
12.4
13.0
14.0
WEIGHT – COOLING ONLY UNIT
kg
618
641
644
675
670
683
WITHOUT PUMP OPTION
Pressure drop machine
KPa
35
33
34
HYDRONIC KIT OPTION
Connection type
GROOVED – VICTAULIC TYPE
Outer diameter of the connection
"
2 "
Expansion tank volume
L
18
Buffer tank volume
L
150
OPTION RESERVE PUMP
(2)
YES
Available pressure machine + H.K. without buffer
kPa
165
162
160
156
154
149
Available pressure machine + H.K. with buffer
kPa
161
156
153
146
141
134
High pressure WATER PUMP OPTION
Number
1 Maximum working current one pump A 4.2
OPTION RESERVE PUMP
(2)
YES
Available pressure machine + H.K. without buffer
kPa
249
247
245
241
238
234
Available pressure machine + H.K. with buffer
kPa
245
241
237
230
226
219
EKWXBA HE
75.2
95.2
109.2
121.4
132.4
171.4
OPTIONS
COOLING ONLY OPTION
(1)
Total refrigerant charge
kg
18
22,5
23
21,5 x 2
WEIGHT COOLING ONLY UNIT
kg
835
945
945
1605
1716
835
WITHOUT PUMP OPTION
Pressure drop machine
KPa
49
62
72
40
50
49
HYDRONIC KIT OPTION
Connection type
GROOVED – VICTAULIC TYPE
Outer diameter of the connection
"
2 "
2 1/2"
3"
Expansion tank volume
L
25
35
50
Buffer tank volume
L
300
OPTION RESERVE PUMP
(2)
SI
Available pressure machine + H.K. without buffer
kPa
164
153
149
164
153
149
Available pressure machine + H.K. with buffer
kPa
159
137
127
Upon request
High pressure WATER PUMP OPTION
Number
1
2
Maximum working current one pump
A
5,9
4,2
5,9
OPTION RESERVE PUMP
(2)
Si
Available pressure machine + H.K. without buffer
kPa
232
204
183
Upon request
Available pressure machine + H.K. with buffer
kPa
229
201
180
Upon request
OPTIONS
Technical specifications of equipments with options
Note:
(1) Same cooling and working data as for the standard version. (2) Rotation use of the water pumps to increase the components life time.
53
Page 54
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
EKWXBA HE
193.4
207.4
OPTIONS
COOLING ONLY OPTION
(1)
Total refrigerant charge
kg
23.5 x 2
24 x 2
WEIGHT COOLING ONLY UNIT
kg
1879
1882
WITHOUT PUMP OPTION
Pressure drop machine
KPa
62
72
HYDRONIC KIT OPTION
Connection type
GROOVED – VICTAULIC TYPE
Outer diameter of the connection
"
3"
Expansion tank volume
L
50
Buffer tank volume
L
300
OPTION RESERVE PUMP
(2)
YES
Available pressure machine + H.K. without buffer
kPa
144
140
Available pressure machine + H.K. with buffer
kPa
Upon request
High pressure WATER PUMP OPTION
Number
2 Maximum working current one pump
A
5.9
OPTION RESERVE PUMP
(2)
YES
Available pressure machine + H.K. without buffer
kPa
Upon request
Available pressure machine + H.K. with buffer
kPa
Upon request
OPTIONS
Technical specifications of equipments with options
Note:
(1) Same cooling and working data as for the standard version.
(2) Rotation use of the water pumps to increase the components life time.
54
Page 55
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
1. COMPRESSOR
2. 4-WAY VALVE
3. EXPANSION VALVE
4. CHECK VALVE
5. BIDIRECTIONAL FILTER
6. LIQUID TANK
7. PLATES HEAT EXCHANGER
8. SUCTION ACCUMULATOR (OPTION DEPENDING ON THE MODELS)
9. FINNED COIL
10. AXIAL FAN WITH EC MOTOR
B. WATER CIRCULATING PUMP EEV. ELECTRONIC EXPANSION VALVE PA. HIGH PRESSURE SWITCH PT. PRESSURE TRANSMITTER Pur. AIR DRAIN TAC. COMPRESSOR SUCTION TEMPERATURE PROBE TEA. WATER INLET TEMPERATURE PROBE TEV. EXPANSION VALVE, THERMOSTATIC TSA. WATER OUTLET TEMPERATURE PROBE Vc. DAMPER VALVE VS. RELIEF VALVE
OPTIONS:
PD - DIFFERENTIAL PRESSURE SWITCH VEx- EXPANSION TANK
ACCESSORIES:
FS - FLOW SWITCH FT - FILTER
OPTIONS
REFRIGERATION DIAGRAM
LEGEND
EKWXBA HE - from 38.2 to 67.2 cooling only
EKWXBA HE - 75.2 to 109.2 cooling only
55
Page 56
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
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
56
Page 57
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
B1/B2 - Circulating pump D - Buffer tank HEx - Plates heat exchanger Ma - Water pressure manometer Pa - Air drain Vd - Drain tap VEx - Expansion tank Vs - Security valve TAh - Antifrost temperature TEA - Water inlet temperature TSA - Water outlet temperature
OPTIONS
B3 - Reserve circulating pump Va - Check valve Vc - Damper valve PD - Differential pressure switch
ACCESSORIES
FS - Flow switch FT - Water filter
INSTALLATION
OPTION
Hydraulic diagram with buffer tank
EKWXBA HE - from 38.2 to 109.2
EKWXBA HE - from 121.4 to 207.4
LEGEND
57
Page 58
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
KRONO 2 HE
WEIGHT DISTRIBUTION (kg)
MODEL
R1
R2
R3
R4
R5
R6
R7
R8
Total
38.2
167
121
139
192 - - - -
618
44.2
176
125
141
199 - - - -
641
47.2
177
126
142
199
- - -
-
644
55.2
183
130
151
212 - - - -
675
59.2
182
128
149
211 - - - -
670
67.2
186
131
151
214 - - - -
683
75.2
213
176
202
244
- - -
-
835
95.2
261
199
210
276
- - -
-
945
109.2
261
199
210
276
- - -
-
945
121.4
191
207
193
179
182
196
228
210
1587
132.4
205
222
207
192
195
210
244
225
1699
171.4
221
239
223
207
210
226
263
243
1831
193.4
225
243
227
211
214
230
267
247
1864
207.4
225
244
227
211
214
231
268
247
1867
KRONO 2 HE
WEIGHT DISTRIBUTION (kg)
MODEL
R1
R2
R3
R4
R5
R6
R7
R8
Total
38.2
Pump
176
137
153
196 - - - -
662
Cooling only
172
133
149
192 - - - -
646
44.2
Pump
185
141
155
203 - - - -
685
Cooling only
181
137
151
199 - - - -
669
47.2
Pump
186
142
156
204 - - - -
688
Cooling only
182
138
152
200 - - - -
672
55.2
Pump
191
146
165
216 - - - -
718
Cooling only
188
142
161
213 - - - -
703
59.2
Pump
191
146
165
216 - - - -
718
Cooling only
186
141
160
211 - - - -
698
67.2
Pump
194
147
166
218 - - - -
726
Cooling only
191
144
162
214 - - - -
711
75.2
Pump
221
180
214
262 - - - -
876
Cooling only
216
175
209
257 - - - -
856
95.2
Pump
263
202
218
284 - - - -
966
Cooling only
256
195
212
277 - - - -
941
109.2
Pump
263
202
218
284 - - - -
966
Cooling only
256
195
212
277 - - - -
941
121.4
Pump
199
215
200
186
189
203
236
218
1646
Cooling only
194
210
196
182
185
199
231
214
1612
132.4
Pump
212
229
214
199
201
217
252
233
1758
Sólo Frío
208
225
210
195
197
213
247
229
1724
171.4
Pump
228
247
230
213
217
234
271
251
1890
Cooling only
224
242
226
210
213
229
266
246
1856
193.4
Pump
232
251
234
217
220
238
276
255
1923
Cooling only
228
247
230
213
216
233
271
250
1889
207.4
Pump
232
251
235
218
221
238
276
255
1926
Cooling only
228
247
230
214
217
234
271
251
1892
INSTALLATION
OPTION
Weight distribution
Cooling only unit
WITH RESERVE PUMP
58
Page 59
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
KRONO 2 HE
WEIGHT DISTRIBUTION (kg)
MODEL
R1
R2
R3
R4
R5
R6
R7
R8
Total
38.2
Pump
182
178
233
239 - - - -
832
Cooling only
178
174
229
235 - - - -
816
44.2
Pump
191
183
235
246 - - - -
855
Cooling only
187
179
231
242 - - - -
839
47.2
Pump
192
183
236
247 - - - -
858
Cooling only
188
179
232
243 - - - -
842
55.2
Pump
198
187
245
259 - - - -
888
Cooling only
194
183
241
255 - - - -
873
59.2
Pump
198
187
245
259 - - - -
888
Cooling only
193
182
240
254 - - - -
868
67.2
Pump
201
189
245
261 - - - -
896
Cooling only
197
185
242
257 - - - -
881
75.2
Pump
277
373
335
249 - - - -
1235
Cooling only
272
368
330
244 - - - -
1215
95.2
Pump
318
395
339
273 - - - -
1325
Cooling only
312
389
333
267 - - - -
1300
109.2
Pump
318
395
339
273 - - - -
1325
Cooling only
312
389
333
267 - - - -
1300
121.4
Pump
189
204
224
252
367
326
228
211
2001
Cooling only
186
200
221
248
360
321
224
208
1967
132.4
Pump
199
215
237
266
387
345
241
223
2113
Cooling only
196
211
233
262
381
339
237
220
2079
171.4
Pump
212
228
252
283
411
366
256
237
2245
Cooling only
209
225
248
279
405
361
252
233
2211
193.4
Pump
215
232
255
287
417
372
259
241
2278
Cooling only
212
228
252
283
411
366
255
237
2244
207.4
Pump
215
232
256
287
418
372
260
241
2281
Cooling only
212
229
252
283
412
366
256
237
2247
INSTALLATION
OPTION Weight distribution
With reserve pump and buffer tank
59
Page 60
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
Main Control MCX08M
POSITION
ANALOGIC INPUT
DIGITAL INPUT
ANALOGIC OUTPUT
DIGITAL OUTPUT
1
Compressor Protection 1
Differential presostato / Flow switch
Not used
Compressor 1
2
Compressor Protection 2
Remote Start/Stop
Not used
Compressor 2
3
Cond./ Evap. Pressure Cold/Heat.
Second Set Point
Output 0-10V
condensation control
4 way valve (Heat pump only)
4
Cond. / Evap. Pressure. Cold/Heat.
Outdoor fan thermal sensors.
Not used
Antifrost resistance
5
Inlet Water Temperature
High pressure switch protection
-
Outdoor fans
6
Antifrost temperature
Remote Cooling/Heating selector
-
Water pump nº1
7
Outdoor Temperature.
Thermal protection for Water pump 1
-
Water pump nº2
8
Outlet Water Temperature.
Thermal protection for Water pump 2
-
Alarm Output
Main Control MCX15B
POSITION
ANALOGIC INPUT
DIGITAL INPUT
ANALOGIC OUTPUT
DIGITAL OUTPUT
1
Water inlet temperature
P.Differential/ Flow valve
Output 0-10V
condensation control 1
Compressor 1 circ.1
2
Water outlet temperature circuit 1
Thermal protection compressor 1
Output 0-10V
condensation control 2
Compressor 2 circ.1
3
Water outlet temperature circuit 2
Thermal protection compressor 2
4 way valve circ.1
4
Cond. /Evap. Pressure Cooling/Heating
Circ. 1.
Thermal protection ext. fans circ.1
Antifrost resistance circ.1
5
Evap. /Cond. Pressure Cooling /
Heating Crc. 1.
High pressure switch Circuit 1
Compressor 1 circ.2
6
Cond. /Evap.Pressure Cooling / Heating
Circ. 2.
Remote On-Off
Compressor 2 circ.2
7
Evap. /Cond. Pressure Cooling /
Heating Circ. 2.
Remote Cooling/Heating selector
4 way valve circ.2
8 Second Setpoint
Anti-frost resistance circ.2
9 Thermal protection compressor 3
10
Thermal protection compressor 4
11 Ext fans Thermal. circ.2
Fan Operation circ.1
12 High pressure switch Circuit 2
Fan Operation circ.2
13 Thermal protection pump
Water Pump (for 2-pump
KIT)
14
15
Alarm Output
Support control MCX06D for 3 Pumps OPTION
POSITION
ANALOGIC INPUT
DIGITAL INPUT
ANALOGIC OUTPUT
DIGITAL OUTPUT
1
Thermal protection for Water
pump 1
Operation water pump 1
2
Thermal protection for Water
pump 2
Operation water pump 2
3
Thermal protection for Water
pump 3
Operation water pump 3
4
5 Alarm Thermal Pumps
6
7
8 On/Off Pumps (*)
INSTALLATION
OPTION
Configuration of Input and Output with buffer tank and reserve pump
Models 38.2 – 109.2
Models 121.4 – 207.4
(*) The On/Off signal is issued by the main controller. digital output nº13.
60
Page 61
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS
AXIAL FANS
REFRIGERANT DATA
SAFETY DATA: R410A
Toxicity
Low
Contact with Skin
R410 A vapours 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.
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. Then get medical attention.
Inhalation
Inhalation of the R410A vapour may cause irritation. Vapour 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.
Medical Advice
Semiotics or support therapy is recommended. Cardiac sensitisation has been observed in the presence of circulating catecholamines such as adrenalin. It may cause cardiac arrhythmia and even 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 specifying
Conditions to Avoid
Do not use in the presence of high temperatures, flames, burning surfaces and high humidity levels.
Hazardous Reactions
Contact with certain red-hot metals may result in exothermic or explosive reactions and yield toxic and/or corrosive decomposition products. Specific materials to avoid include freshly abraded aluminium surfaces and active metals such as sodium, potassium, calcium, powdered aluminium, magnesium and zinc.
Hazardous
Decomposition
Products
R410A: Halogen acids produced by thermal decomposition and hydrolysis.
General Precautions
Do not inhale concentrated vapours. Their concentration in the atmosphere should not exceed the minimum preset values and should be maintained below the professional threshold. Being heavier than the air, the vapour concentrates at lower levels in narrow areas. Therefore the exhaust system must work as well at lower levels.
Respiratory System
Protection
If you are not sure about the concentration level in the atmosphere, it is recommended to wear a respirator approved by an accident prevention Authority. It shall be either individual or connected.
Storage
Cylinders must be stored in a cool, dry and properly ventilated storage area away from heat, flames, corrosive chemicals, flumes, explosives and be otherwise protected from damage. Keep a temperature below 50°C.
Protective Clothing
Wear overalls. protective gloves and goggles or a mask.
Accidental Release
Measures
It is important to wear protective clothing and a respirator. Stop the source of the leak. if you can do this without danger. Negligible leaks can be left evaporating under the sun. providing that the room is well ventilated. Considerable leaks: ventilate the room. Reduce the leak with sand. earth or other absorbing substances. Make sure that the liquid does is not channelled into gutters. sewers or pits where the vapours are likely to create a stuffy atmosphere.
Disposal
The best method is recovery and recycling. If this method is not possible, dispose according to an approved procedure which shall ensure the absorption and neutralization of acids and toxic agents.
Fire Fighting
Information
R410A: Not flammable in the atmosphere.
Cylinders
The cylinders if exposed to fire shall be cooled by water jets; otherwise if heated they may explode.
Protective Fire
Fighting Equipment
In case of fire, wear an independent respirator and protective clothing.
APPENDIX: SAFETY DATA R410A
61
Page 62
IOM_EKWXBA HE_38.2a207.4_207810_190100_EN
EKWXBA HE
WATER CHILLERS AXIAL FANS
Subject to modifications without prior notification.
62
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