Hitecsa ECVBA 351 Instruction manual

IOM ECVBA-ECVA_351a3502_208015_200101_EN
EVAPORATOR UNITS AIR –AIR
SOLO FRIO
ECVBA/ECVA
Cooling Only
Heat Pump
Models: 351 │401 │ 501 │ 701 │721 │751 │801 │1001 │1201 │1402 │1502 │1602 │
2002 │ 2302 │2402 │3002 │3502
Cooling Capacities: from 9.8 kW to 114.3 Kw
Heating Capacities: from 10.4 kW to 119.6 kW
INSTALLATION, OPERATION & MAINTENANCE MANUAL

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, flexibility and on practical solutions.
This has been the hallmark of our product catalogue.
The versatility of our factory allows us to deliver solutions that can meet any requirement and we endeavour solving any problem
that may arise in designing and implementing air conditioning installations.
From all of us at Hiplus Aire Acondicionado, once again, thank you very much.

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IOM ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
INDEX
INTRODUCTION .......................................................................................................................... 5
REGULATIONS AND CERTIFICATIONS .......................................................................................... 6
SAFETY PRECAUTIONS ................................................................................................................ 7
TECHNICAL SPECIFICATIONS........................................................................................................ 8
ECVA-ECVBA ...........................................................................................................................8
OPTIONAL EC FAN.................................................................................................................10
TRANSPORT & RECEPTION ........................................................................................................ 11
INSPECTION AT RECEPTION ..................................................................................................11
RIGGING ...............................................................................................................................11
STORAGE ..............................................................................................................................12
INSTALLATION .......................................................................................................................... 12
INSTALLATION LOCATION.....................................................................................................12
UNIT SETTLEMENT................................................................................................................12
SERVICE AREA (MM) ..............................................................................................................12
WEIGHT DISTRIBUTION ......................................................................................................13
DIMENSIONS ........................................................................................................................14
ECVA-ECVBA .........................................................................................................................14
Models 351-401-501 .........................................................................................................14
Models 701-721-751-801 ..................................................................................................14
Models 1001-1201.............................................................................................................15
Models 2002-2302-2402...................................................................................................15
Models 3002-3502-4002-4502 .........................................................................................16
DRAINAGE ............................................................................................................................16
AIR DUCTS.............................................................................................................................17
ELECTRICAL INSTALLATION...................................................................................................17
Electrical data....................................................................................................................17
Electrical connections ........................................................................................................18
OPERATION............................................................................................................................... 19
BEFORE START UP.................................................................................................................19
START UP ..............................................................................................................................19
INDOOR FAN TRANSMISSION ADJUSTMENT ........................................................................20
OPERATING LIMITS ...............................................................................................................21
ECVBA/ECVA

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IOM_ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
OPTIONS ................................................................................................................................... 22
AIR INTAKE AND DISCHARGE ................................................................................................22
EC MOTOR FAN (OPTION).....................................................................................................23
Safety instructions .............................................................................................................23
Explanations of symbols ....................................................................................................24
Product safety....................................................................................................................24
Requirements placed on the personnel / due diligence.....................................................24
Working on device.............................................................................................................24
Modifications / interventions in the device .......................................................................26
Diagnosis / faults...............................................................................................................27
Rotation caused by an air flow in false direction...............................................................29
Maintenance and repairs ..................................................................................................29
Cleaning.............................................................................................................................30
MAINTENANCE ......................................................................................................................... 31
CONSERVATION AND CLEANING ..........................................................................................31

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IOM ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
INTRODUCTION
Purpose of this Manual
The present manual together with any other technical document such as refrigeration or
hydraulic lines drawings and electrical diagrams among others have been issued to provide the
necessary information for installation, start-up and maintenance of the unit. Therefore it is
essential to read the instructions very carefully. Please contact us if your machine is equipped
with an option or any special modification that are not mentioned in the present manual.
Make sure that all the necessary information for the correct installation of the system is included
in the manuals that have been supplied together with this unit and/or the rest of the indoor units,
accessories, etc. The manufacturer declines any responsibility in case of people/animals injuries
or material damages resulting from an incorrect use of the unit and/or non-compliance with these
instructions.
In case of different interpretations and/or errors, the priority order of validity of the given
documents will be: 1. Name plate of the unit stating the specifications. 2. IOM (the present
document), 3. EDM, technical catalogue, 4. UM user manuals.
Storage of the Manual
This manual and the electrical diagram of the unit must be preserved 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 to gives us the right to modify the
specifications of our products without prior notice.
Electrical Supply
Check that the electrical network features comply with the data shown in the data nameplate of the unit.
Local Safety Regulations
Observe and analyse all the possible causes of accidents that may arise in the place or places of installation of the units,
check all the medium and the tools that will be used, etc. It is not possible to anticipate each one of the potential
circumstances of danger in this manual. Respect the valid local security standards during installation.
Principles of Security
The unit has been designed and built so that it does not represent any risk to the health and safety of people. Appropriate
solutions for the project have been planned to eliminate the possible causes of risk during installation.
Installation
Utilization
The unit will be used only for the purpose it has been designed for. Any other use does not imply any kind of liability or
responsibility from the manufacturer.
Please read carefully the present document. Any damage to the equipment caused by an incorrect
installation will not be covered by the insurance. Any installation operation shall be completed according
to the instructions of the manufacturer and carried out by certified personnel. This document has been
issued for installers, however, should you find the instructions not clear enough, please do not hesitate
to contact us.
Reminder: all operations shall be completed according to the local security regulations.

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IOM_ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
INTRODUCTION
Incorrect Operation
In case of breakdowns or operation faults, turn the unit off.
Periodic Inspections and Maintenance
Carry out periodic inspections to detect possible damaged or broken parts. If these parts are not repaired,
people injuries or material damages could be caused. Disconnect the power supply of the unit before
carrying out any maintenance operation.
Make sure that the maintenance areas are accessible. If these areas have to be invaded by the lateral air
supply and/or return ducts, verify that the design of the ducts allows the access to the fans and that they
are not a hindrance when replacing the filters. If that is not possible make sure access is possible from the
other side.
All operations shall be carried out in accordance with the local safety regulations.
Repairing Operations
The reparations shall always and exclusively be completed by trained personnel previously authorized by
the manufacturer and only original spares shall be used. The safety devices of the unit may be damaged
in case of non-compliance with these warnings.
Modifications
The manufacturer will not respond to possible warranty claims and 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.
Packaging and Replacement of Equipment
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.
Do not mix this product 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 the
waste, depending on its nature shall be sent to recycling, composting or treatment plants, or to an
authorized management agency in accordance with the current local legislations.
Refrigerant
This product is hermetically sealed and its operation depends on the use of R-410A which is a HFC fluorinated greenhouse
gas.
REGULATIONS AND CERTIFICATIONS
ISO 9001 CERTIFICATION: HIPLUS AIRE ACONDICIONADO S.L., by endeavouring to always gain the maximum
satisfaction from their customers, obtained the ISO 9001: Quality System for its production activity. That result shows our
continuous determination to improve quality and the reliability of all our products. Our commercial activities, design, raw
materials, production processes and after-sales service represent the means to reach our goal.
CE MARKING: Our products are CE marked according to the essential requirements of the applicable EC directives and
their last modifications and comply with the national legislation of each country.

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IOM ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
SAFETY PRECAUTIONS
DANGER
• 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, IT MUST ALWAYS BE FREE OF
VOLTAGE for this operation.
• Do not touch or adjust the safety elements inside of any unit of the system. Use only original spare parts in
repairs and install them in the same position where old parts were placed.
• The installation and maintenance of the air conditioning equipment could 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 the explosive atmosphere.
ATTENTION!
• Only qualified and trained service staff (technical service) must make the installation, commissioning and carry out
maintenance works. Unqualified staff 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.
• 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.
• All safety recommendations must be followed.
Before starting installation, service or maintenance, turn off the main power switch in order
to avoid electrical shock that may cause personal damages.
WARNING!

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IOM_ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
TECHNICAL SPECIFICATIONS
ECVA-ECVBA
MODEL
351
401
501
701
721
INDOOR CIRCUIT FAN
Type
Centrifugal, double aspiration
Nominal air flow
m3/h
2315
2600
3540
4720
4720
Available static pressure
Pa
43
50
60
55
55
Model
10/10 DD
10/10 SS
10/10 SS
12/12 SS
12/12 SS
Power
kW
0.25
0.55
0.55
0.75
0.75
Speed
r.p.m.
872
870
1032
809
809
ELECTRICAL SPECIFICATIONS
Power supply
V/~/50
400/III+N / 50
400/III+N / 50
400/III+N / 50
400/III+N / 50
400/III+N / 50
Max. power input
kW
0.4
0.5
1.0
1.1
1.1
Max. current input
A
1.8
1.1
1.7
2.0
1.9
DIMENSIONS AND WEIGHT
Length
mm
937
937
1087
1130
1130
Width
mm
750
750
750
800
800
Height
mm
580
580
580
650
650
Weight
kg
92
95
99
126
126
REFRIGERANT
Type
R410A
Global Warming Potential (GWP) (1)
2088
Charge (2)
-
-
-
-
-
(1) 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.
(2) The charge depends on the outdoor unit and the dimensions of the refrigeration pipes.
MODEL
751
801
1001
1201
1402
INDOOR CIRCUIT FAN
Type
Centrifugal, double aspiration
Nominal air flow
m3/h
5133
5125
6277
8000
8000
Available static pressure
Pa
53
83
73
91
130
Model
12/12 SS
12/12 SS
12/12 G2L
12/12 G2L
12/12 G2L
Power
kW
1,1
1,1
1,1
1,5
1,5
Speed
r.p.m.
891
910
800
896
862
ELECTRICAL SPECIFICATIONS
Power supply
V/~/50
400/III+N / 50
400/III+N / 50
400/III+N / 50
400/III+N / 50
400/III+N / 50
Max. power input
kW
1.4
1.4
1.4
2.0
2.2
DIMENSIONS AND WEIGHT
Length
mm
1130
1130
1700
1700
2000
Width
mm
800
800
870
870
939
Height
mm
650
650
650
650
747
Weight
kg
136
136
197
199
253
REFRIGERANT
Type
R410A
Global Warming Potential (GWP) (1)
2088
Charge (2)
-
-
-
-
-
(1) 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.
(2) The charge depends on the outdoor unit and the dimensions of the refrigeration pipes.

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IOM ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
TECHNICAL SPECIFICATIONS
ECVA-ECVBA
MODEL
1502
1602
2002
2302
2402
INDOOR CIRCUIT FAN
Type
Centrifugal, double aspiration
Nominal air flow
m3/h
10000
10000
11000
12000
12000
Available static pressure
Pa
145
145
175
160
160
Model
12/12 G2L
12/12 G2L
15/11 G2L
15/11 G2L
15/11 G2L
Power
kW
2.2
2.2
3
3
3
Speed
r.p.m.
913
913
734
787
734
ELECTRICAL SPECIFICATIONS
Power supply
V/~/50
400/III+N / 50
400/III+N / 50
400/III+N / 50
400/III+N / 50
400/III+N / 50
Max. power input
kW
2.2
2.4
3.2
3.0
3.7
DIMENSIONS AND WEIGHT
Length
mm
2000
2000
2600
2600
2600
Width
mm
939
939
980
980
980
Height
mm
747
747
752
752
752
Weight
kg
272
272
333
333
333
REFRIGERANT
Type
R410A
Global Warming Potential (GWP) (1)
2088
Charge (2)
-
-
-
-
-
(1) 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.
(2) The charge depends on the outdoor unit and the dimensions of the refrigeration pipes.
MODEL
3002
3502
INDOOR CIRCUIT FAN
Type
Centrifugal, double aspiration
Nominal air flow
m3/h
14000
18000
Available static pressure
Pa
200
250
Model
15/15 G2L
18/18 G2L
Power
kW
4
4
Speed
r.p.m.
734
707
ELECTRICAL SPECIFICATIONS
Power supply
400.III / 50
400.III / 50
Max. power input
kW
4.0
4.0
DIMENSIONS AND WEIGHT
Length
mm
2800
2800
Width
mm
1050
1050
Height
mm
915
915
Weight
kg
418
524
REFRIGERANT
Type
R410A
Global Warming Potential (GWP) (1)
2088
Charge (2)
-
-
(1) 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.
(2) The charge depends on the outdoor unit and the dimensions of the refrigeration pipes.

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IOM_ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
TECHNICAL SPECIFICATIONS
OPTIONAL EC FAN
MODEL
801
1001
1201
1402
1502
1602
2002
2302
2402
3002
3502
Type
RADIAL with EC motor (Plug-Fan type)
Quantity / Size
- / mm
1/400
2/400
2/400
2/450
2/450
2/450
2/450
2/450
2/450
2/560
2/560
ELECTRICAL SPECIFICATIONS (for a fan)
Power supply
V/~/Hz
380-480 / 3 / 50
Nominal motor power
kW
2.4
2.4
2.4
2.0
2.0
2.0
2.0
2.0
2.0
3.4
3.4
Max. current (400V)
A
3.7
3.7
3.7
3.2
3.2
3.2
3.2
3.2
3.2
5.2
5.2
NOMINAL OPERATION CONDITIONS
Nominal air flow
m3/h
5150
6200
8000
8000
10000
10000
11000
12000
12000
14000
18000
Nominal static pressure
Pa
62
75
75
75
75
100
100
100
100
125
125
Total power input
kW
0,72
0,68
1,06
0,82
1,35
1,44
1,31
1,61
1,61
1,66
2,65
Speed
rpm
1706
1252
1488
1103
1324
1344
1342
1448
1448
979
1164
Total sound power (Lw)
dBA
80
73
78
74
79
79
81
83
83
77
81
OPERATING LIMITS VALUES
Max. available pressure
Pa
813
1059
961
840
665
665
637
610
610
801
651
Max. speed
r.p.m.
2400
2400
2400
1880
1880
1880
1880
1880
1880
1550
1550
Max. sound power
dBA
87
93
91
87
86
86
86
87
87
89
87
Sound power at 400Pa
dBA
81
80
82
80
83
83
83
85
85
82
84

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IOM ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
TRANSPORT & RECEPTION
INSPECTION AT RECEPTION
It is advisable to examine the equipment carefully at the time of its reception.
Check that the equipment has not been damaged during transport and it has been supplied complete with all
parts specified in the order and/or with the options specified in the order. If this is not the case, contact the
transport company immediately. (First 48h).
Verify the correct voltage of the nameplate and make sure it is in accordance with local power supply.
In case of any flaw or anomaly detected, please contact HITECSA.
RIGGING
Before moving the unit, make sure that all panels are well fixed.
Raise and set down the equipment carefully.
Do not tilt the unit more than 15 degrees during transportation.
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.
Check minimum cable rigging lengths.

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IOM_ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
TRANSPORT & RECEPTION
STORAGE
If the equipment is going to be stored before the installation, please follow the instructions belowin order to avoid damages,
corrosion or deterioration:
Move it carefully.
Do not place the machine in places exposed to ambient temperature 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 reach 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 inlet, dust and objects in general due to invasion or biological,
meteorological and/or human interactions.
Minimum storage temperature: -10ºC.
Maximum relative humidity: 90%
INSTALLATION
INSTALLATION LOCATION
- Consult and respect the rules and local regulations which regulate the installation of air conditioning systems.
- Choose a site without dust and debris.
- Respect the appropriate service area for the equipment which will be installed.
- Verify that the ground or structure on which the unit will be installed is able to support its weight in operation.
- Fit shock absorbers throughout the installation to prevent the transmission of noise and vibration.
- Check that the direction of the sound level is not going to disturb anyone.
UNIT SETTLEMENT
Make sure that the unit is correctly levelled.
The bed frame should have the area and the strength to support the weight of the unit.
Be sure that after settlement the unit drain is working properly.
SERVICE AREA (mm)
Make sure to respect the following measurements for the correct operating of the unit.

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IOM ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
INSTALLATION
WEIGHT DISTRIBUTION
ECVB
A
1
2
3
4
351
23
23
23
23
401
24
24
24
24
501
25
25
25
25
701
32
32
32
32
721
32
32
32
32
751
34
34
34
34
801
34
34
34
34
1001
49
49
49
49
1201
50
50
50
50
1402
64
64
64
64
1502
68
68
68
68
1602
68
68
68
68
2002
84
84
84
84
2302
84
84
84
84
2402
84
84
84
84
3002
105
105
105
105
3502
131
131
131
131

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IOM_ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
INSTALLATION
DIMENSIONS
ECVA-ECVBA
Models 351-401-501
Models 701-721-751-801

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IOM ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
INSTALLATION
DIMENSIONS ECVA-ECVBA
Models 1001-1201
Models 2002-2302-2402

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IOM_ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
INSTALLATION
DIMENSIONS ECVA-ECVBA
Models 3002-3502-4002-4502
DRAINAGE
The indoor unit drainage (condensate water) has a 3/4” MPT connection.
Condensate drain pipe diameter should be equal or larger than the unit drain connection depending on the line length
and general building configuration.
The drainage line should inclined a minimum 2% for proper water evacuation.
When drain line is exposed to temperatures below 0 degrees, it is necessary to cover with thermal insulation or electrical
heating wire to avoid water freezing and tube damages.
It is convenient to install the water drain trap with proper dimensions (see diagram).
Recommended water drain trap
measures

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IOM ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
INSTALLATION
AIR DUCTS
Air duct dimensions will be determined according to the airflow and available pressure of the unit.
Ducts must be designed by qualified technical people.
Use ducts made of non-inflammable materials in order to avoid any risk of fire as a consequence of the
deflagration of gases. It is advisable to use metal sheet duct with insulation.
Use flexible ducts to connect air ducts into the unit and thus avoid vibration and noise transmission.
ELECTRICAL INSTALLATION
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 Hitecsa’s warranty.
When making electrical connections always use the unit wiring diagram.
The line protection elements have to be placed by the installer according to the current legislation local laws.
Must check that the crankcase heater is working prior the start of the unit.
The interconnecting wires have to be located in the protection tube or inside the groove cannel.
Electrical data
ECVBA/ECVA
351
401
501
701
721
751
801
1001
1201
Voltage
400.3 + N
Start up current A
53
64
73
88
117
123
95
121
151
ECVBA/ECVA
1402
1502
1602
2002
2302
2402
3002
3502
Voltage
400.3 + N
Start up current A
100
119
119
148
193
203
233
216
Disconnect main switch from main power supply before starting any type of operations.
WARNING!

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IOM_ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
INSTALLATION
ELECTRICAL INSTALLATION
Electrical connections
Legend
1. Electrical heater supply400/3l
2. Ground
3. Indoor fan motor supply400/3
4. Available power supply for indoor 400V.3~+PE or 230V.1~+N+PE

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IOM ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
OPERATION
BEFORE START UP
Start up has to be performed by a qualified service personnel in air conditioning.
Make sure that panels are firmly secured with screws.
Check that there is no leakage of oil or refrigerant.
Ensure that the unit is evenly leveled.
Check if there is enough space for operation and maintenance.
Before opening the electrical panel and having access to the inside of the machine it is MANDATORY to
disconnect the power supply hose of the machine which MUST BE FREE OF VOLTAGE for this operation.
Check that the drainage is not blocked.
Always use the electrical diagram of the unit to make the connections.
Make sure that all electrical connections are properly tight.
The power supply of the unit must be as indicated on the serial plate. Damage caused by the start-up of the unit
in an incorrect voltage line is not covered by Hitecsa’s warranty.
The unit must not be supplied with any other voltage than that the indicated on the serial plate. The power supply
to the unit must be within 10% of the voltage indicated on the serial plate.
Check the correct rotation direction of the fans.
The installer must place line protection elements in accordance with current legislation.
Wiring of electrical connections must be protected by a tube or other cable conduits.
Make sure if the crankcase heater of each compressor has been operating during 24 hours prior the start up.
Check that the air filters are clean and correctly fitted.
Check the condition and placement of grilles, diffusers, air ducts, tarpaulins, etc.
START UP
It is necessary to take notes of the air inlet and outlet temperatures to the internal coil, the volts and amps of the
compressor and motor fan, as well as the suction and discharge pressure of each compressor.
It should be remembered that it is necessary to clean the air filters after the first 4 hours of operation.
Observe, at least, 3 cooling cycle operations.
Due to the unit has frequency converters, it is essential that the protection be at least 300mA to prevent power
cuts caused by the activation of the circuit breaker.

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IOM_ECVBA-ECVA_351a3502_208015_200101_EN
ECVBA/ECVA
EVAPORATOR UNITS AIR-AIR
OPERATION
INDOOR FAN TRANSMISSION ADJUSTMENT
Adjust transmission in such a way that the indoor motor consumption comes to its normal value.
If consumption is below nominal value it means that unit air flow is too low.
To change fan speed:
1. Remove the belt. Move the motor along its track (or loosen the tensor set screw) in order to release it.
2. Loose the set screws of the motor pulley and turn the movable flange. Open of close depending on the needs
(Open: speed decreases).
3. Tighten set screws.
4. Place the belt in the pulley cannel. The closure of opening of the pulley could void the size of the prior belt. In
this case, replace it for other belt of the same profile and with the appropriate length.
5. Tighten the belt by using tensor screw or sliding the motor, depending on the case.
-Align fan and motor pulleys:
1. Loose fan pulley set screws.
2. Slide fan pulley along the shaft and align with motor by using a ruler in order to ensure that is parallel to the belt.
3. Tighten fan pulley set screws.
- Adjust belt tension:
1. Loose motor mounting plate bolt and slide it.
2. Belt flexion in millimeters is estimated by dividing S by 40.
1. Motor
2. Motor pulley
3. Transmission belt
4. Fan pulley
5. Tensor set screw
6. Set screw
7. Fixed flange
8. Movable flange