VTS Medical Systems ventus PRO 2022 Instruction Manual
VENTUS PRO AIR HANDLING UNITS
OPERATION, INSTALLATION
AND MAINTENANCE MANUAL
PRO
2022
OIMM – VENTUS PRO Ver. 1.0.0 (31-05-2022)
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OIMM – VENTUS PRO
1
2
3
3.1
3.2
3.3
3.4
3.5
3.6
3.6
3.6.1
3.6.2
3.6.2
3.6.3
3.7
3.7.1
3.7.2
3.7.3
3.7.4
3.7.5
3.7.6
3.7.7
3.8
3.8.1
3.8.2
3.8.3
3.8.4
3.8.5
3.8.6
3.9
3.10
3.10.1
3.10.2
3.10.3
3.10.4
3.10.5
3.10.6
3.10.7
3.10.8
3.11
CONTENTS
GENERAL INFORMATION AND SAFETY INSTRUCTIONS 3
TRANSPORT AND STORAGE 4
FOUNDATION, ASSEMBLY, CONNECTION OF UNIT-RELATED SYSTEMS 5
AHU SUPPLIED IN SECTIONS 5
AHU SUPPLIED IN PACKAGES FOR ASSEMBLY ON SITE 5
CONDITIONS FOR AHU ASSEMBLY CARRIED OUT BY VTS AUTHORIZED SERVICE 6
INSTALLATION 7
CONNECTIONS 9
DUCTED OUTLE CONNECTIONS 10
PIPING CONNECTIONS 11
CONDENSATE DRAIN LINES 13
ELECTRIC CONNECTIONS 13
SETTING UP OF COMPONENTS 17
CONTROL SYSTEM 17
AIR DAMPERS 17
AIR FILTERS 18
COIL HEAT EXCHANGERS 18
HUMIDIFIERS 19
SUPPLY AND RETURN FANS 19
ELECTRIC HEATER 19
SAFETY 19
USE OF THE UNIT 20
OBSERVATION OF WARNING SIGNS 20
STAFF TRAINING 20
PREVENT OF COMMON DANGERS AND RISKS 21
RECOMMENDED SAFETY PRACTICES 21
THE HIDDEN DANGER 22
START UP 22
MAINTENANCE 24
FAN SECTIONS 25
COIL SECTIONS 26
FILTER SECTIONS 26
HUMIDIFIER SECTIONS 27
SOUND ATTENUATORS 27
BELT TENSION AND ALIGNMENT CONTROL 28
CHANGE OF PULLEYS 28
LUBRICATION OF BEARINGS 29
TROUBLESHOOTING 31
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OIMM – VENTUS PRO
1
! For the units which are equipped with freon installation - before installing the device, check the
applicable regulations related to the obligations of the heat pump or DX installation owner (an
operator) in relation to the need to register the freon installation (see the F-Gas Act)
! The owner of the heat pump or DX installation owner (operator) is obliged to create a Product
!
! The user (owner) of the device is obliged to keep the technical data sheets of the device,
which were delivered with the device. The device card should be made available to the services
servicing the device.
! VTS reserves the right to implement changes without prior notice.
!
! The air handling unit must be installed, checked, commissioned and maintained only by trained
personnel in compliance with technical standards and local regulations.
! Warranty repairs must be performed only by an Authorized Manufacturer Service with
Center for installation, commissioning, maintenance and repair of AHU Manufacturer units as
well.
! It is strictly forbidden to open the inspection panels when the device is operating or in the start-
up phase. Before opening the inspection panel, turn off the unit and wait two minutes.
! Until the moving parts of the device stop, turn off the device and secure the power supply so as
to prevent the device from being started accidentally.
! Before connecting the electric power supply, check the compliance of the mains voltage and
supply voltage and its frequency in relation to the values given on the rating plate should not
exceed ± 5%.
!
In-depth familiarization with the content of this manual, assembly and operation of the air-handling unit in line
failure operation of the device.
Works related to unloading packages with AHU subassemblies, transportation of the packages, AHU blocks
specialists or they are supervised by authorized staff.
experience, knowledge of the subject-related standards, documentation and regulations concerning operation
and safety procedures, have been authorized to perform necessary operations and who are able to troubleshoot
any potential problems.
examples of their assembly and installation as well as start-up, operating, repairing and maintenance. If the units
are used for what they are intended, this documentation and any other materials provided with the unit contain
GENERAL INFORMATION AND SAFETY INSTRUCTIONS
3 4
OIMM – VENTUS PRO
2
! For the units which are equipped with freon installation - before installing the device, check
the applicable regulations related to the obligations of the heat pump owner (an operator) in
relation to the need to register the freon installation (see the F-Gas Act)
! The owner of the heat pump (operator) is obliged to create a Product Card where all inspections,
!
The VENTUS PRO can be delivered as fully assembled, assembled in sections or in packages, placed on closed
palettes, containing elements to be assembled on-site by the Manufacturer Authorized Service. This manual
does not contain instructions and guidelines on assembly of the unit.
Delivery of AHUs elements, in the closed, properly marked and not broken palettes is going to belong to customer
after signing of consignment note by client representative.
Open of closed palettes by customer before arrival of Authorized VTS Service is connect with take-over of full
responsibility for contents and completeness of delivery.
Right after delivery of the unit check the condition of the package and examine if all necessary elements have
Unloading packages with AHU subassemblies, transport of the packages to the assembly location
and transport of AHU blocks and elements to the assembly location should be carried out using special equipment
Packages onsite must be stored on hardened, dry and protected against any precipitation place. Hardened
of atmospheric conditions
Packages containing AHU elements should be stored away from places where operate mechanical devices
(vehicles, cranes and other construction machinery). They should be stored in places where they will not be
agents which may deteriorate their condition.
Air handling units are inspected prior to dispatch for good condition and carefully loaded. Special care must be
taken while unloading the units.
Air handling units are generally damaged during transportation and loading / unloading, especially when being
lifted by a crane. Small units can be transported by hand-powered pallet truck or by forklift truck. While hoisting
or lowering, proper lifting equipment (slings and spreaders properly selected
on the ground of the size and weight of the section) should be used not to damage the unit. Safety precautions
should also be taken not to tilt and not to drop the unit.
GENERAL INFORMATION AND SAFETY INSTRUCTIONS TRANSPORT AND STORAGE
TYPICAL LIFTING EQUIPMENT
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OIMM – VENTUS PRO
! Sections connection is out of the standard offer of VTS. It is possible to purchase additional
option to connect to the section by Authorized Service VTS.
! When the customer connect the section by himself should follow the separate instructions,
supplied with AHU in the mounting set.
! During connecting the section one should pay attention on the applying glue on the casing
locks (section connection without using glue will result in a lack of casing tightness - warranty
claims because of this will not be considered).
! Optionally, in the mounting set provided with AHU can be included butyl tape, to additional
seal the connection of section. Additional seal at the connection of section is recommended
especially for the external AHUs.
!
In case of assembly on site:
! Assembly must be carried out on hardened and dry surface. Hardened surfaces are understood
atmospheric conditions and is resistant to any damages relating to placing the AHU on it as
well as regular operation.
! Assembly can be carried out in ambient temperature allowing to perform correctly all technical
procedures of the assembly, i.e. within temperature range: from +5 to +35ºC.
! In case of outdoor assembly, the procedure can be carried out in precipitation-free conditions.
! It is acceptable to start the assembly provided that all safety and security requirements are
met.
! Minimum distance of an assembly location:
• AHU width + 4 meters (2 meters on each AHU side),
• AHU length + 4 meters (2 meters on each AHU side).
!
AHU SUPPLIED IN SECTIONS
AHU SUPPLIED IN PACKAGES FOR ASSEMBLY ON SITE
AMBIENT CONDITIONS FOR AHU INSTALLATION
3.1
3.2
3.3
3
FOUNDATION, ASSEMBLY, CONNECTION
OF UNIT-RELATED SYSTEMS
The Ventus PRO air-handling can be installed as well as inside the building as the outside (except the unit with
the humidity sections). Units can be installed and work on the external air with temperature from -40°C to +60°C.
AHUs installed outside the building should be equipped with roof, air intake and air outlet equipment.
The unit operated outdoor should be regularly cleaned from the snow. Such units should have barrier for protect
against the snow, and base frame should be placed on the level not lower than height of snow level in that region
and relevant regulations.
In condition of the low temperature, the heat lost is increased, It can affect rise of demand for heating.
Controls elements such as: a heat node of the heating capacity regulation, three-way valves, water pumps,
thermo-manometers, valves, as well as frequency converters should be placed in the room with temperature
higher than +5°C.
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OIMM – VENTUS PRO
!
process by Authorized Service. If real conditions do not correspond to the information given
service stoppages or additional actions performed by the service on site.
!
CONDITIONS FOR AHU ASSEMBLY CARRIED OUT BY VTS AUTHORIZED SERVICE
3.4
FOUNDATION, ASSEMBLY, CONNECTION
OF UNIT-RELATED SYSTEMS
The following conditions apply to the delivery of AHUs in packages and orders for the assembly of devices on
site by VTS.
PREPARATION FOR ASSEMMBLING
ASSEMBLY SITE
An assembly place should meet the following conditions:
•
resistant (placement of the unit, installation works).
• The required installation place area:
- Width of the unit + 4 meters (two meters on each side of the unit),
- Length of the unit + 4 meters (two meters on each side of the unit)
• The 230V AC power supply should not be located further than 20m from the installation place which should
be properly lit.
• The place of installation shall provide a safe environment for the installation crew.
• The following should be provided:
- availability of individual AHU elements or pallets including packages on the assembly place of a
particular AHU. Ensured transport of AHU elements and AHU blocks to the place of installation,
- possibility of service entering the site and starting assembly immediately after their arrival,
- making the Warranty Card and Delivery documents supplied with a particular AHU available to the service
ASSEMBLY COMPLETION
After the installation is completed the service is obliged to:
•
If a unit operates with the low inlet temperature of the air, it is recommended to use the mixture of the glycol (up
to 45%) as the heating medium. All installation pipes of the water heating, condensate drying, hydraulic valves
should be well isolated.
It is recommended to use the pre-heater before the heat recovery section.
The air damper actuators should be protected from the atmospheric conditions.
If the outdoor temperature is lower than -20°C, the air dampers actuators must be equipped with heating elements.
All equipment and components operating outside the unit must have the required IP.
Units, periodically stopped during periods of low outdoor temperatures, require special attention.
it from freezing during AHU downtime.
If it is possible that temperature in the fan section fall below -30°C or lower, the sections should be equipped with
an internal heating system to ensure reliable start of the motors after shutdown and downtime.
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OIMM – VENTUS PRO
• put into service a clean AHU labelled with provided pictograms and VTS labels, ready to be connected to a
power source (wiring), utilities and control systems,
•
AHU,
•
•
copy of this document,
•
the place of assembly,
• leave the assembly place in the state from before the assembly.
VTS on-site assembly does not include:
• setting up of electrical wiring, connection to heating of freezing sources and assembly of exchanger valve,
• connection, assembly and start-up of control elements (except for damper actuators, pressure control and
anti-frost thermostat) and engines zeroing,
• placing, balancing and anchoring of air handling units,
• connecting air handling units to ventilation ducts, utilities and electricity,
• start-up of air handling units,
• recycling of containers in which air handling units were delivered.
!
! Before manufacturing air handling unit, the client should check the conditions at site to ensure
that access routes are adequate for both size and weight of the unit sections. Air handling unit
installation areas should also be checked.
!
the condensate drain with necessary water trap.
! AHUs must be anchored to the foundation. Anchoring AHUs is out of VTS delivery.
! The AHU should be installed so that connections of any related systems (ventilation ducts,
pipelines, cabling, etc.) do not collide with the inspection panels.
! It is forbidden to place any elements on the AHU as well as use the AHU as a support of
ventilation ducts and other building components.
• rear side of the unit - minimum space required allowing access and operations on connecting
point
• front side of the unit - minimum space require allowing opening access door to position
perpendicular to the AHU longitudinal axis
• minimum distance between the front side and existing construction elements in order to
carry out the assembly, operation and maintenance successfully.
!
appropriate distance required for proper assembly of the power supply installation elements
should be maintained.
! There is possible to install other systems, pipelines, pillars in the operation area only if they can
be easily disassembled for the maintenance and service procedures.
!
INSTALLATION
3.5
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OIMM – VENTUS PRO
installed and attached separately in the package.
To mount the drain pipe one should unscrew the drilling screws and disassembly header connection glands
assembly bach the header glands (2).
Siphons, which are designed to drain out condensed water from the exchangers at different pressure of the
section and environment, should be connected to the drain connections.
For proper drainage of condensate from the unit, the siphon on the drain pan connection pipe must be installed
in the AHU sections, where negative pressure occurs. Drain siphons or siphon parts are not supplied as standard
delivery. There is no need to apply drain siphons in section with overpressure. In order to minimize air blow–by,
you can use a siphon on the system draining out condensate, assembling the siphon made in accordance with
Siphons usable „H” height depends on the pressure difference between the AHU section, where condensate is
drained from during operation and the ambient pressure. „H” dimension is provided in mm and must be higher
than the pressure difference expressed in mmHO.
If the air handling unit is to be installed in a place where low vibration and noise is required such as hotels,
Styrofoam
FITTINGS
! First attach the bolts on the base frame, then section bolts and tighten both with the same
order and same torque gradually. Do not use excessive force to align the sections, because it
may deform the aluminum framework and casing.
!
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OIMM – VENTUS PRO
Height of the foundation slab or base frame must allow for assembly of the u-trap which drains the condensate
out of the draining tray. In case of the drain plates installed in the lower AHU sections, the unit has to be mounted
onto additional foundation slab or a special hollow must be made directly under the u-trap.
using drilling screws or additional clamping elements. Materials to connect ducts are not supplied as standard
delivery.
TYPICAL AHU CONCRETE BASE
EXAMPLES OF AHU FOUNDATION
Flexible anges connection
using drilling screws
Flexible anges connection
using clamping elements
CONNECTIONS
3.6
9 10
OIMM – VENTUS PRO
When discharging into a duct of larger cross-sectional area than the fan outlet, an expansion section with an
included angle of 7-20º
of ducting prior to the expansion section, allowing the air to become less turbulent before expanding. The fan
should never discharge directly into a duct with larger cross- section.
The same criteria apply when discharging into a duct of smaller cross-sectional area then the fan outlet.
A ducting section with an included angle of up to 45ºshould be used. Losses will again be minimized if a parallel
section of ducting is used prior to the reducing section. To achieve ideal conditions the length of parallel ducting
in both cases should be equal to 8 impeller diameters. However, parallel ducting of considerably shorter lengths
can be used to advantage.
!
! The ducts connected to the AHU have to be suspended or underpinned with dedicated support
increase of noise level in the ventilation system.
!
!
DUCTED OUTLE CONNECTIONS
3.6.1
DUCTED OUTLET CONDITIONS
RULES DUCTED OUTLET CONNECTIONS
discharge. If this is necessary the installation should be carried out as in and ever as in. A better solution is to
have a parallel section of ducting prior to changing direction and it should be as long as can be accommodated.
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OIMM – VENTUS PRO
RULES DUCTED OUTLET CONNECTIONS WITH DIRECTION CHANGE
Water heating and cooling coils should be arranged with inlet connection at the lowest level on one side of the coil
near downstream and water outlet connection on the same side but at high level near the upstream. This arrangement
PIPING CONNECTIONS
3.6.2
! The diameter of the connection and the type of connection of the exchanger are available in the
technical parameters sheet delivered with the device and at the customer's request.
! Do not exceed allowed maximum pressure what is mentioned in AHU tech data and on the
coils.
! All coils connecting piping should be thermally insulated.
! All coils connecting piping should be independently supported not to impose strain on the coil
connections or circuitry.
! Use a pipe wrench to restrain the pipe connections of the coil when tightening the external pipe
connections.
!
11 12
OIMM – VENTUS PRO
COIL CONNECTION RULES
COIL INSTALLATION – HYDRONIC COILS
COIL INSTALLATION – STEAM COILS
•Hydronic •Steam
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OIMM – VENTUS PRO
Moisture condensed out of the airstream on cooling or dehumidifying coils should be drained out from the unit
in order to sustain the proper use of the air handling unit and the ductwork system. Following precautions should
be observed in piping of condensate drain lines.
accordance with any standards and regulations being in force in a country where the unit is installed. Cross-
section and type of cables (e.g. shielded cable) feeding individual functional segments should be selected
from the power supply).
with ahu diagrams.
Before starting connecting power supply, check conformity of the voltage and frequency of a supply network
to the values shown on the rating plate is ±5%. If discrepancy exists, the device cannot be connected.
CONDENSATE DRAIN LINES
ELECTRIC CONNECTIONS
3.6.3
3.6.4
! The bore size of the pan outlet connection should not be less than the pipe connection of the
drain pan.
!
disconnection for cleaning any dirt sediments.
! The siphon (for positive and negative pressure applications) which is sent separately in the unit
should be assembled according to the installation instructions given below.
!
Drainage U-trap connection
•Negative pressure
H= [(-)Pa / 10] + X
PVS 3-6 -> X =50 mm
PVS 6-6 - 15-15 -> X= 40 mm
PVS 15-18 – 37-40 -> X = 30 mm
•Positive pressure
H= (Pa / 10) X= (1,5 x H) + 40
R= X + 75 AB= R - A
Z = 80 mm -> A = 40 mm
Z = 120 mm -> A = 60 mm
Z =200 mm -> A = 140 mm
13 14
OIMM – VENTUS PRO
!
electricians.
!
installation and connection manuals should be used. For the other equipment the installation
instructions and the wiring diagrams which stuck in the terminal box should be followed.
!
Typical connections – inverter powered ac motors
Direct Driven Fans' motors are adapted to operation in dusty and humid environment (IP55) and their insulation
(F-class) is adapted to cooperation with the frequency converter. No additional means inuring the motor against
conditions of the AHU fans' section are required.
Motors used in our AHUs are by default motors with their own cooling system and with fans built into a shaft.
Supply cabling must be led to the fan's motor via rubber passes located in the back panel of the AHU casing.
One should connect the fan set by means of fault protection appropriate for the applied frequency converter. In
the case of use EC motors or AC motors powering with the use of a converter it is not necessary to connect the
Connecting power cables and clamps in a cable box of one-speed motors
Marking on the engine
rating plate
Motor power supply
3x400V/50Hz
Supplying power to the motor through frequency converter
Converter power supply
3x400V/50Hz
Converter power supply
1x230V/50Hz
230/400V D/Y
400/690V D/Y x
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OIMM – VENTUS PRO
! Before connecting the fan set one should check carefully the rated parameters of both power
! In fan sections equipped with more than one fan synchronous operation of fans should be
ensured.The fan control system should be prepared in such a way so as to provide simultaneous
start- up, rotary speed control and stoppage.
!
should be disabled.
! In the inspection door of the fan section is installed limit switch, which cause the fan to stop
in case of unauthorized opening of the door. The switch must be connected to the frequency
converter, accordance with the wiring diagram attached in the VFD separate manual.
!
! Fan motors with the power of 4kW can be started directly. Motors with the power of 5.5 kW and
!
In case of powering the motor from a frequency converter, high-frequency currents or voltage harmonic
components in wiring powering the motor can generate some electromagnetic interferences. Connection
between the frequency converter and motor should be done using shielded cables, in accordance with guidelines
outlined in the operation and maintenance manual of the frequency converter.
Before putting into service and after long time of storage or standstill, the resistance of insulation between
the casing and winding should be determined, applying direct current. Minimal value of insulation resistance
for a new, renewed or repaired winding should be 10 MΩ in relation to the ground.
Fans' motors with belt drive are powered by 3x400V/50Hz voltage. The connection should be done through the
overload and short-circuit protection suitable for rated current of the motor.
Electric motor, starters, interconnecting cabling and any associated controls should be properly designed and
selected to be suitable for the driven equipment or other electrical apparatus, to be safe and to comply with the
requirements of Electricity Supply Authority.
Starter for centrifugal fans in the air handling units for single speed motors driving through V-belts are normally
of the direct-on-line type. However, the customer or Electric Supply Authority may require motors above 3kW to
be operated by a star-delta starter, to reduce starting current.
TYPICAL CONNECTIONS – INTERMEDIATE FAN DRIVE (AC MOTORS)
Reset way
!
To avoid the electric heater keep on running
while the fan is not rotating, the wiring should
be done similar to diagram shown at the right
A – manual reset
B – automatic reset
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OIMM – VENTUS PRO
Fans' motors with belt drive are powered by 3x400V/50Hz voltage. The connection should be done through the
overload and short-circuit protection suitable for rated current of the motor.
• direct-on-line starting: The thermal overload really should preferably be set to the motor full load current
shown on the motor rating plate.
• star-delta starting: The thermal overload really should preferably be set to the 0.58 x motor full load shown
on the motor rating plate.
After thermal overload relay settings is done it should be checked that thermal overload relay works properly at
normal operating conditions, by operating motor on two phases.
• the terminal markings of motors conform to the international standards. Stator terminals are marked, U.V.W
and the neutral terminal N,
• please check data on the rating plate. The voltage marked on the rating plate must be in agreement with the
mains voltage.
• the terminal board is normally equipped with 6 terminals. Details concerning the connection are given on the
inside cover of the terminal box and / or on a diagram placed inside by the manufacturer.
THERMAL OVERLOAD RELAY SETTING
MOTOR TERMINAL MARKINGS:
!
box should be used for this purpose.
! To avoid the danger of overloading and operation on two phases, the motors should be
protected either with fuses and thermal/thermo magnetic switches or electronic circuits.
! If the electric heater will be used, electrical connections should be done according to the
information on the heater label.
!
INTERMEDIATE FAN DRIVE – 1-SPEED AC MOTOR
Direct-on line starter with control circuit Star-Delta starter
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OIMM – VENTUS PRO
INTERMEDIATE FAN DRIVE – 2-SPEED AC MOTOR
Dahlander pole changing motor – switch
(2-speed)
Pole chnager with two separate windings
(2-speed)
! Complete automatic control which should be an integral part of each air-conditioning system,
enables continuous operation of a device, in many cases it is an indispensable element and
lack of it may lead to serious operational problems or failures.
!
! In the case of AHUs equipped with water heat exchangers (heaters, coolers, glycol recovery)
spontaneous closure in case of power cut.
!
SETTING UP OF COMPONENTS
CONTROL SYSTEM
AIR DAMPERS
3.7
3.7.1
3.7.2
Dampers shall be equipped with the motor. Check that the blades turn back in closed position in case of power
supply failure during operation. Care must be taken to ensure that the actuator does not attempt to push the
damper blades beyond fully open or fully closed positions. All damper blades must be checked for free movement
and for fully open and fully closed positions.
17 18
OIMM – VENTUS PRO
to ensure proper sealing.
through working section and locked to the rewind unit.
Differential pressure switch must be installed and connected to the control panel.
along with the units.
Filters that are shipped separately in the unit should be assembled after cleaning the inner surface by operating
All coils are leak tested and checked prior to assembly. Fins are checked for proper condition. However, they
must be checked once more and combed out if necessary, because they might be damaged during handling and
installation. Do not remove plastic covers from coil pipe connections until the unit is ready for piping connectors.
Connections should be checked according to the project and the leakage should be taken in to account. System
layout should take into consideration of possible coil withdrawal.
heating coil, the hot water pump and water / steam valves should only be opened during the operation of fan.
overheating danger will occur.
Check the concentration ratio of the antifreeze before the start-up of the cooling coil. It should be enough for the
claimed operating temperature range. It should be taken in to account that the increasing concentration ratio of
the antifreeze decreases the performance of the coil.
The minimum temperature of the chilled water should be +20C, at lower temperatures freezing danger will occur.
Antifreeze is a dangerous chemical. The safety regulations of the antifreeze manufacturer should be taken in to
account.
Direct expansion coils will be supplied with a refrigerant distributor suitable for brazed connections. Refrigerant
pipe work must include necessary shut off devices, dehydrators, solenoid valves, oil traps etc. Selection, sizing,
installation and setting of thermostatic expansion valve should be in accordance with the recommendation of
condensing unit manufacturer.
Steam coils: Special care should be taken for collection and disposal of condensate within the coils and to
prevent entry of the condensate in the main into the coil by trapping it independently on a coil bypass. Condensate
connections to the stream trap must be of the same size as the coil outlet.
AIR FILTERS
COIL HEAT EXCHANGERS
3.7.3
3.7.4
!
label.
! If not otherwise stated on the capacity label, maximum operating temperature and pressure:
• for water coils (type:1) : 90ºC, 10 bar,
• for water coils (type:2) : 150ºC, 15 bar,
• for steam coils: 160ºC, 6 bar
!
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OIMM – VENTUS PRO
should have a valve for cutting off during the maintenance. Before start-up clean the water sump, close the drain
at clockwise. Change the connection of the 2 phases if the direction is opposite. Not to damage the pump do
not operate dry.
should be connected to the steam distribution pipe.
Vibration isolators, on which fan + motor assembly is mounted, are locked prior to shipping to avoid damage
during transport. Once the unit is in position and duct connections are made, isolators must be released.
Wiring work must be carried out in accordance with local standards. Type of start (direct-on-line or star/delta)
should met with local electrical standards. Starters, controls, overload protecting devices, interlocks etc. should
be provided as required. (See page 34) After the start-up, check that direction of rotation of the fan is correct.
The electric heater should be protected against humidity and water. Be sure that the electric heater automatically
KLS air handling units can be considered as safe machinery. By means of the compliance statement of the EEC
and health, on the ground of Machinery Directive 98/37/EC and the European standards. The “CE” mark appears
trained, or if it is used not in conformity with general provisions. For this reason, we intend to explain to the user
the concept of safety referring air handling units and to inform him of possible danger and consequent measures.
Internal area of the units near to the moving parts (fans, motors, pumps etc.) end electrical parts, hot sections
able to access to these areas, it is necessary to provide oneself with the proper key tools. The operators are
responsible for transport, installation, start up, service and maintenance including cleaning and repairing.
Possible hazards regarding to the air handling units are:
•
• damages to the unit,
•
HUMIDIFIERS
SUPPLY AND RETURN FANS
ELECTRIC HEATER
SAFETY
3.7.5
3.7.6
3.7.7
3.8
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OIMM – VENTUS PRO
KLS air handling unit are used for heating, ventilating and air conditioning purposes. Any other use is considered
not in conformity with general provisions. The manufacturer is not responsible for damages resulting; the user
will be the only responsible.
Warning signs should be placed on the unit, showing:
• prohibition to repair or adjust while the unit is running,
• obligation to turn off the power before opening the access door,
• warning of coming into contact with electrical parts etc.
Installation, start up and maintenance works can be executed only by authorized and trained staff. This staff or
people who, on behalf of the user, attend to control and make maintenance of the unit must be informed about
possible hazards regarding:
• electrical connections,
• piping connections,
• ducting connections,
• start up,
• maintenance.
It is necessary to establish and to respect the responsibilities for the control and maintenance to guaranty safety.
USE OF THE UNIT
OBSERVATION OF WARNING SIGNS
STAFF TRAINING
3.8.1
3.8.2
3.8.3
!
be used at special locations such as tropical regions, indoor pools etc. the operational limits
must be ascertained from the manufacturer.
!
rotating parts (fans, motors etc.) must be selected for this kind of applications, so air handling
unit manufacturer should be informed while ordering the unit.
! In order to use the unit according to general provisions, proper instructions of transport,
installation and use must be observed. Installation and start-up of the unit must conform to the
national standards having legal course in the country of the user. The user is responsible for
compliance with standards. Besides it must be avoided any type of work that may compromise
safety.
!
! Arbitrary changes on the unit made by the user or operator are not allowed and exclude the
warranty of the manufacturer for the damages to things and persons.
! The unit can be started up only by authorized persons and by the means of proper safety
devices
! The installer is obliged to install the unit according to installation plans and conditions.
! The staff in charge is obliged to signal immediately to the user any changes that may
compromise safety. For this reason it is necessary to inspect the unit for eventual anomalies
or damages at least once a week.
! The user or operator never must dismount and deactivate safety devices; if these would be
removed for extra maintenance, at the end of the operations they must be reinstalled.
! For all operations of extra maintenance, the power source must be locked out and protected
against unlock by anybody else.
!
Table of contents
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