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Related Manuals for Daikin UATYA-BFC2Y1
Summary of Contents for Daikin UATYA-BFC2Y1
- Page 1 Installation, use and maintenance manual Rooftop Packaged Unit R-32 rooftop series – Base, 2 - 3 and 4-damper versions Made-To-Stock models UATYA-BBAY1 UATYA-BFC2Y1 UATYA-BFC3Y1 Made-To-Order models BASE Installation, use and maintenance manual English Rooftop Packaged Unit...
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Page 3: Table Of Contents
Contents Introduction Conformity Description 1.2.1 Symbols 1.2.2 Labels Safety General safety precautions 2.1.1 Discharge of the safety valves 2.1.2 Emergency stop Basic rules 2.2.1 Limits to the use – Minimum area of the conditioned space and maximum refrigerant charge 2.2.2 Refrigerant leak detector 2.2.3 Water flow rate at the heat exchangers... - Page 4 4.8.5 Change language 4.8.6 Change date and time Wiring diagram Installation Dimensions and weight Installation site Installation 5.3.1 External positioning 5.3.2 Noise attenuation 5.3.3 Minimum distances Hydraulic connections 5.4.1 Hot water coil connection 5.4.2 Condensate drain of the internal air coil 5.4.3 Condensate drain of the external air coil 5.4.4...
- Page 5 6.9.3 First commissioning 6.9.4 Maintenance Commissioning Preliminary operations First starting 7.2.1 Preliminary checks 7.2.2 Functional tests Calibration of safety components Checks during operation Alarms and malfunctions 7.5.1 General troubleshooting Temporary stop Stop for long periods of time Maintenance Adjustments External cleaning 8.2.1 Cleaning traditional finned coils in Cu/Al 8.2.2...
- Page 6 THANK YOU Thank you for choosing our product. It is the result of many years’ experience and careful design and has been built with first-class quality materials and advanced technologies. Declaration or certificate of conformity also guarantees that the equipment meets the requirements of the European Machinery Safety Directive.
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Page 7: Introduction
INTRODUCTION 1.1 Conformity With regard to relevant regulations and directives, see the declaration of conformity that is an integral part of the manual. 1.2 Description 1.2.1 Symbols A description of the main symbols used in this manual and on the labels affixed to the unit is given below. Danger symbol;... -
Page 8: Labels
1.2.2 Labels For the constructional features, available models and technical data, please refer to the Technical Catalogue. The model, serial number, features, power supply voltage and so on are shown on the labels affixed to the unit (the following illustrations are shown only as an example). The Manufacturer adopts a continuous development policy and, in this perspective, reserves the right to make changes and improvements to the documentation and to the units without prior notice. -
Page 9: Safety
SAFETY 2.1 General safety precautions Access to the area around the unit must be prevented by special guarding where this is positioned in a location that is not protected and can be reached by unqualified persons. The equipment operator is responsible for complying with regulatory obligations. The equipment operator is the person who has actual control over the technical operation and free access, which means the possibility of monitoring its components and their operation and the possibility of granting access to third parties. - Page 10 Before work is started on the unit: check for potentially flammable atmospheres; Make sure there are no possible ignition sources comply with the requirements specified by Annex HH of standard IEC 60335-2-40:2018, by local legislations, and, with respect to europen standards, by EN 378-4 and EN 13133", and by existing local regulations.Adhere to the requirements set by the local legislation and by European standards EN378-4 and EN13313.
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Page 11: Discharge Of The Safety Valves
2.1.1 Discharge of the safety valves If present on the refrigerant circuit, installation requirements and/or national regulations lay down that the discharge of the safety valves must be routed to the outside. The safety valves are always fitted and their exhaust is routed outside the closing panels. Installation needs and/or national regulations require the gas exhausted from the safety valves to be routed to the outside. -
Page 12: Basic Rules
2.2 Basic rules All the units are designed and built in compliance with Directive 2014/68/EU of the European Parliament and of the Council of 15 May 2014 on the approximation of the laws of the Member States relating to pressure equipment. All units are designed and manufactured in accordance with the applicable European Directives that are referenced in the declaration of conformity. - Page 13 The units do not fall within the scope of Directive 2014/34/EU of the European Parliament and of the Council, of 26 February 2014, on the approximation of the laws of the Member States relating to equipment and protective systems intended for use in potentially explosive atmospheres. Any operator gaining access to the unit must be authorised and qualified as specified by Annex HH of IEC 60335-2-40:2018, by local legislations and, with respect to europen standards, by EN 378-4 and EN 13133 ", additionally, they must have proper knowledge to perform all the activities required...
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Page 14: Limits To The Use - Minimum Area Of The Conditioned Space And Maximum Refrigerant Charge
2.2.1 Limits to the use – Minimum area of the conditioned space and maximum refrigerant charge Clause GG.9 of Annex GG within the standard IEC 60335-2-40:2018 (Household and similar electrical appliances - Safety - Part 2-40: Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers) defines the charge limits based on the total conditioned space area and the ventilation requirements for ducted appliances using A2L refrigerants. - Page 15 The unit is equipped with a refrigerant detection system that complies with Annex LL of the IEC 60335-2-40:2018, which position has been checked according to test reported in Annex MM of IEC 60335-2-40:2018. When the refrigerant detection system detects a leak, the following will be initiated by the unit: •...
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Page 16: Refrigerant Leak Detector
2.2.2 Refrigerant leak detector This unit is equipped with a refrigerant leak detector for safety. To be effective, the unit must be electrically powered at all times after installation, other than when servicing. A refrigerant leak detector is installed in the unit between the supply coil and the supply fan(s). This device allows immediate detection of refrigerant leaks in order to start what reported in the above paragraph “Limit to the use –... -
Page 17: Water Flow Rate At The Heat Exchangers
2.2.3 Water flow rate at the heat exchangers It is necessary to ensure that the water flow rate during operation is no higher than 1.5 times and no lower than 0.5 times the nominal flow rate of the unit stated in the Technical Catalogue. 2.2.4 Water composition Dissolved substances in the water can cause corrosion in the heat exchangers. -
Page 18: Warnings Concerning Flammable Refrigerants
2.2.5 Warnings concerning flammable refrigerants Units with mildly flammable refrigerants (A2L), such as R32, shall be installed in accordance with the European standards and regulations and with the local regulations, where applicable. The information below is provided in accordance with standard IEC 60335-2-40:2018 and its annexes and clauses (here in after “Annex”... - Page 19 (Annex DD.4.3) Work procedure Work shall be undertaken under a controlled procedure so as to minimise the risk of a flammable gas or vapour being present while the work is being performed. (Annex DD.4.4) General work area All maintenance staff and others working in the local area shall be instructed on the nature of the work being carried out.
- Page 20 (Annex DD.4.8) Ventilated area Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting any hot work. A degree of ventilation shall continue during the period that the work is carried out. The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.
- Page 21 (Annex DD.5.2) Particular attention shall be paid to the following to ensure that by working on electrical components, the casing is not altered in such a way that the level of protection is affected. This shall include damage to cables, excessive number of connections, terminals not made to original specification, damage to seals, incorrect fitting of glands, etc.
- Page 22 (Annex DD.9) Removal and evacuation When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used. However, it is important that best practice is followed since flammability is a consideration. The following procedure shall be adhered to: •...
- Page 23 d) Pump down refrigerant system, if possible. e) If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system. f) Make sure that cylinder is situated on the scales before recovery takes place. g) Start the recovery machine and operate in accordance with instructions.
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Page 24: Noise
2.3 Noise The starting of the unit, with activation of its components, emits a noise whose intensity varies depending on the operating level. The correct location choice and the correct installation prevent the unit causing annoying noise due to resonances, reflections and vibrations. -
Page 25: Safety Information On The Refrigerant Fluid
2.5 Safety information on the refrigerant fluid This product contains fluorinated greenhouse gases included in the Kyoto protocol. Do not release these gases into the atmosphere. Type of refrigerant: R32. GWP value: 677. Based on "IPCC Fifth Assessment Report". GWP is the global warming potential. The quantity of refrigerant fluid is indicated in the unit’s data label. -
Page 26: Receiving The Product And Storage
RECEIVING THE PRODUCT AND STORAGE 3.1 Reception On receiving the unit, check that it is undamaged, bearing in mind that it left the factory in perfect condition. Report any signs of damage immediately to the transporter and make a note of these on the Delivery Sheet before signing it. -
Page 27: Handling
3.3 Handling Before each unit handling operation, check that the lifting capacity of the machinery used is compatible with the weight of the unit. Handling must be carried out by adequately equipped qualified personnel. In all lifting operations, make sure the unit is firmly secured in order to prevent accidental falls or overturning. -
Page 28: Storage
For lifting use all the brackets present in the unit. Fig. 3 Lifting with slings To prevent the slings from touching the unit, suitable protective devices must be placed on the upper edges. It is mandatory to use a lifting beam adjusted to the width of the unit in order to ensure lifting stability 3.4 Storage The unit is filled with refrigerant gas, classified as A2L (mildly flammable). -
Page 29: Product Description
PRODUCT DESCRIPTION 4.1 Intended use These units are intended for air cooling / heating, generally used in air conditioning applications These are high efficiency, self-contained air conditioners, for both summer and winter use, that allow attainment of complete thermo-hygrometric air handling and recovery of the heat dispersed for air renewal. They can be used in both commercial and industrial applications that, besides having load variability, can be characterized by high latent loads and need to guarantee optimum conditions for occupants. -
Page 30: Control And Safety Devices
4.3 Control and safety devices The unit is integrally managed by an electronic microprocessor control that, through the various installed temperature and pressure sensors, keeps its operation within the safety limits. All the parameters involved with control of the unit are shown in the “Control Manual” that is an integral part of the documentation of the unit. -
Page 31: Air System
4.7 Air system 4.7.1 Internal air fans Depending on the configurations, there may be only supply fans or also return fans in the units. The fans are radial fans with reverse blades, with external rotor motor directly coupled to the impeller. The radial fans are called "EC", with electronically commutated brushless motor. -
Page 32: Control Panel
4.8 Control panel The unit is fully managed by an electronic system with microprocessor that has a touch screen display as interface. By using the display, you can access all the unit’s functions, such as visualising the operating parameters, setting the parameters, managing and analysing any problems. -
Page 33: Change Of Set Points
4.8.3 Change of set points The “Menu” icon provided in the main screen leads to the main menu page. Go to the “Setpoint” sub menu and select the function whose setpoint is to be changed. Scroll the parameters until the desired parameter setpoint is achieved. Select the setpoint parameter to enable the edit keypad. -
Page 34: Installation
INSTALLATION During installation or whenever work must be carried out on the unit, it is essential to strictly follow the instructions in this manual, comply with the directions on the unit and in any case take all necessary precautions. The pressures in the refrigerant circuit and the electrical components can create risky situations during installation and maintenance work. -
Page 35: Installation
The unit must be installed in an area from which any leaking refrigerant cannot flow into buildings or cannot harm persons or damage property. Similarly, should a refrigerant leak occur, the refrigerant must be prevented from flowing into fresh air inlets, doors or similar openings, and it must be prevented from building up under any walking surface and inside trap-doors. -
Page 36: Noise Attenuation
5.3.2 Noise attenuation The units are designed and built paying particular attention to keeping down noise emission during operation. In addition to standard versions, the company offers versions with the compressor compartment coated with sound absorbing material for lower noise emissions. Correct installation for both the place and the components, as shown in the relevant chapter, avoids resonances, reflections and vibrations that can be particularly bothersome. -
Page 37: Hydraulic Connections
5.4 Hydraulic connections If the unit has parts that require a hydraulic connection to be carried out by the installer, it is mandatory to fit a metal mesh filter with mesh size no larger than 1 mm on the inlet pipes. If this is not installed, the warranty is voided immediately. -
Page 38: Condensate Drain Of The Internal Air Coil
5.4.2 Condensate drain of the internal air coil The condensate collection tray is provided with a male R 1" threaded pipe for connection. Fig. 5 Connection to the condensate collection tray On the condensate discharge pipe it must be installed a proper syphon in order to avoid that outdoor air may be blown through it. -
Page 39: Electrical Connections
5.5 Electrical connections All electrical operations must be carried out by personnel having the necessary legal requirements, and trained and informed on the risks connected with these operations. The sizing and characteristics of the power lines and relevant components must be determined by staff qualified to design electrical systems, following the international and national regulations of the place of installation of the units in conformity with the regulations in force at the time of installation. - Page 40 To fix the power cable, use power cable fixing systems that resist tensile and torsional stresses. The weight of the cables must not be borne by the electrical connection system. The cross-section of the cable and the line protection devices must correspond to those indicated in the wiring diagram.
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Page 41: Aeraulic Connections
5.6 Aeraulic connections The ducting must be suitably sized so as not to generate unforeseen concentrated and/or distributed head losses that can cause drops in the handled air flow rate below the design flow rate. The head losses in the ducting must not exceed the available pressure provided by the fans (for particular applications, consult our Technical Department). - Page 42 If the supply is downward, the panel on the bottom of the unit must be removed Fig. 13 Downward connection In version FC2, the damper on the right-hand side from the machine bottom is set up at the factory as the return damper.
- Page 43 1 - Invert the connections of the outside air damper with those of the return damper in the terminal board (consult the wiring diagram supplied with the unit). Fig. 16 Exchange of control signal connection 2 - Before putting the duct in place, unscrew the cable gland on the right-hand side damper to remove the probe on the return line and place it in the cable gland of the left-hand side damper.
- Page 44 If the unit is provided with the servo control option with spring-operated return (see an example in the figure below), the servo controls of the dampers must be inverted in addition to inverting the signals that control the damper servo controls in the terminal board and to re-placing the outside air probe.
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Page 45: Connection Of The Ducts
In version “FC2” it is possible to change the direction of the return air from the rear to the side connection because the side panels with holes at the back are interchangeable. Fig. 21 Changing the panel location 5.6.2 Connection of the ducts Correct installation of the channels should comply with the following recommendations: - the size of the ducting must be at least the size of the supply outlet and suction inlet on the unit. -
Page 46: Options And Accessories
OPTIONS AND ACCESSORIES The units are designed to fit options/accessories. Some options/accessories are assembled at the factory when the unit is manufactured; others must/can be assembled at the time of unit installation or even at a later stage. This chapter is intended to provide the reader with all instructions relating to the various options/accessories. 6.1 Rainproof hood 6.1.1 Installation... -
Page 47: Anti-Vibration Mounts
6.2 Anti-vibration mounts In order to reduce vibrations transmitted to the structure, it is advisable to install the unit on rubber or spring anti- vibration mounts, supplied as an accessory and to be requested when placing the order. The dimensional diagram with footprint shows the position and load of each anti-vibration mount. The anti-vibration mounts must be fixed on before positioning the unit on the ground. -
Page 48: Air Filters
6.3 Air filters 6.3.1 Air filters on delivery line The units are fitted with filters on the air supply side. The filters can be cleaned or replaced by opening the panels in the unit that bear a pictogram for access. Fig. - Page 49 Modification of the locking system requires that the fixed portion of the system is displaced from position “C” to position “D”. Fig. 26 Modification of filter locking system Fig. 27 Modification with filters in place Before the type of filters installed is changed, a check must be performed that the fans in the unit can provide the required head.
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Page 50: Dirty Filter Sensor
6.4 Dirty filter sensor The level of air filter clogging in the delivery line is checked by a differential pressure switch that measures the difference in pressure before and after the filters. An alarm appearing on the controller display will signal the need to either replace or clean the filters. The unit continues to operate even when the “filters dirty”... -
Page 51: Probes
6.5 Probes 6.5.1 Duct temperature/humidity probe in return line For a more accurate measurement of the temperature and humidity conditions, some specific options require that a duct probe for sensing the air temperature/humidity is fitted in the return duct. The probe must be connected by the installer. Fig. -
Page 52: Remote Ambient Temperature Probe In Return Line
6.5.3 Remote ambient temperature probe in return line Upon request, a remote temperature probe is available for installation in the room, in replacement of the probe installed in the return line. The probe must be connected by the installer. Fig. 30 Ambient temperature probe A cable with cross-section between 0.5 and 1.5 mm can be used for the electrical connection. -
Page 53: Fire Detector And Smoke Detector
6.6 Fire detector and smoke detector 6.6.1 Fire detector The fire detector is a heat detector intended to check the temperature conditions before a fire bursts out. When the temperature exceeds the threshold setpoint or when a quick change in temperature is experienced, a relay gets activated to warn about an alarm condition. -
Page 54: Pressure Transducer
6.7 Pressure transducer 6.7.1 Pressure transducer for constant pressure control Installation of the pressure transducer helps modulate the fan speed to guarantee a desired pressure difference between two different points in the plant, for instance between the return and the delivery lines of the unit or between the delivery line and the outside. -
Page 55: Humidifier
6.8 Humidifier 6.8.1 Installation It is normally installed at the factory in units featuring a humidifier. For certain sizes the humidifier is supplied separately. However, whatever is needed for its operation is set up at the factory (e.g. electrical connections, steam distributor and exhaust). In both cases the hydraulic supply is under the responsibility of the installer. - Page 56 WF WT Fig. 39 Humidifier feeding The acronyms in the diagram have the following meanings: - WF = mechanical filter; - WT = shut-off valve. The humidifier must be fed with water from the public water system having the specifications below: •...
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Page 57: Electrical Connections
The following is not recommended: - the use of well and/or industrial water or water taken from cooling circuits and, generally, water that is potentially polluted from a chemical or bacteriological standpoint; - the addition of disinfectants or anti-corrosive compounds to water, as they are potential irritants. For correct installation check that: - a shut-off valve is installed;... - Page 58 The cylinder may be hot. Let it cool down before touching it or otherwise wear safety gloves. All maintenance and/or service operations must be carried out by skilled and qualified staff who are aware of the necessary precautions to be taken. Before work is performed on the cylinder, check that the humidifier is isolated from the mains.
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Page 59: Gas Burner
6.9 Gas burner Installation must take place in compliance with the local rules and regulations. Before this unit is started, we recommend carefully reading the instructions attached by the generator manufacturer. A check must be made before commissioning units provided with a hot air generator that the gas distribution system (gas type, available pressure, etc.) is compatible with the control and setup parameters of the unit. - Page 60 6.9.1.2 Gas connection Only certified components must be used for the gas line connections. A hose is supplied as standard having an inner diameter of 6 mm and an outer diameter of 8 mm, including ¾”G swivel fittings. The generator is complete with: •...
- Page 61 The table below shows the gas connectors and the max. tightening torques. Ø gas connector UNI/ISO 228/1-G ¾” 1” 1 ½” Max. tightening torque 150 Nm 200 Nm 300 Nm We recommend that care be taken when installing the gas intake pipes: be sure that the door of the burner compartment can be opened.
- Page 62 6.9.1.5 Condensate drain Special attention must be paid when draining condensate. Incorrect condensate drainage may jeopardise correct equipment operation. Factors to keep in mind include: - hazard resulting from condensate build-up in the heat exchanger; - hazard resulting from condensate water freezing in the pipes; - hazard resulting from fume exhaust from the steam trap.
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Page 63: Controller Interface Panel
6.9.2 Controller interface panel The hot air generator is managed by a microprocessor controller that is installed in the burner compartment and is used to control, set up and troubleshoot all the operating parameters of the equipment. An interface panel is provided in the burner compartment that is used to carry out all operations required to operate the equipment, to set up the parameters, and to detect alarms. - Page 64 The generator is started up as follows: - check that the wording “RDY” appears on the display: if “OFF” appears, click the button under “FUN” and set the equipment to “ON”; - on the LCD display check that the value in “Tin” is greater than the value in “Von”. - As soon as “ON”...
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Page 65: Maintenance
Loosen the mounting screws to move the metal sheet. Change the height of the metal sheet and then tighten the screws. For good air performances the holes are set in the factory with the height specified in the table. Unit range from / to 25/30 40/50 60/70... - Page 66 6.9.4.2 Inspection of fume exhaust and air return ducting Where possible, make a visual check or use dedicated tools to check the ducting. Remove any dust building up on the end piece of the air intake. 6.9.4.3 Inspection and cleaning of the Venturi With a paintbrush remove any dirt from the Venturi mouth, without dropping it inside the Venturi.
- Page 67 6.9.4.8 Inspection of safety thermostat(s) This inspection must be performed with the generator running and the burner ON. Use an isolated tool (230 V) to plug out the serial connection of the thermostat; plug out the Faston terminal from the safety thermostat and wait until the blockage alarm “F20” appears on the LCD display of the CPU board installed aboard the machine.
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Page 68: Commissioning
COMMISSIONING 7.1 Preliminary operations The unit should only be started up by qualified personnel authorised by the manufacturer. All the units are pre-charged with refrigerant gas, so the refrigerant circuit is pressurised. The unit is filled with refrigerant gas, classified as A2L (mildly flammable). Check: - that the electrical connection has been made correctly and that all terminals are properly tightened;... -
Page 69: First Starting
7.2 First starting 7.2.1 Preliminary checks To operate, the unit must have the external OK signal input closed. Refer to the wiring diagram supplied with the unit for connection of the external OK signal input. If it is not necessary for system requirements, the external OK signal input must be short-circuited. For this purpose, a cable is already foreseen and partially connected to the contacts. -
Page 70: Calibration Of Safety Components
7.3 Calibration of safety components Any work on the unit must be carried out by qualified authorised personnel. Incorrect calibration values can cause serious damage to the unit and harm people. The control and safety equipment is calibrated and tested in the factory before the unit is shipped. However, after the unit has been started, the safety devices must be checked (only the high pressure switches). -
Page 71: Alarms And Malfunctions
7.5 Alarms and malfunctions Possible malfunctions will trigger the protective devices and safety devices of the unit before serious faults occur. All the “warnings” and “alarms” are recorded in the memory of the control and displayed on the display of the unit. Before resetting an alarm, the cause that triggered it must be found and eliminated. - Page 72 SYMPTOM LIKELY CAUSE POSSIBLE SOLUTION If it is not possible to work on the Operation of the system pump control of the pump, partially close outside its performance curve with the shut-off device on the delivery Abnormal noises on the hydraulic excessive water flow rate.
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Page 73: Temporary Stop
7.6 Temporary stop The shutdown of the unit for a few days is considered as temporary. The unit must be stopped using the display of the control, the external OK signal or via serial if included. During the temporary stop, the unit must be powered correctly. When the temporary stop is carried out in this way, all that needs to be done to restart the unit is to set the control to “ON”. -
Page 74: Maintenance
MAINTENANCE All operations required on the unit for the purpose of maintenance must be carried out by authorised and qualified staff, as described by Annex HH of IEC 60335-2-40:2018, by local legislations and, with respect to europen standards, by EN 378-4 and EN 13133. Take Annex E to standard EN378-4 as main reference. -
Page 75: External Cleaning
8.2 External cleaning The component of the unit that needs most care is the finned pack heat exchanger. It is essential to keep it clean and free of dirt and/or deposits that can hinder or prevent air flow. Regular cleaning of the surface of the coil is essential for the unit to work correctly and also increases the operating life of the exchanger and the unit. -
Page 76: Installation Site Cleanness
8.2.2 Installation site cleanness Keep the place where the unit is installed clean and tidy so that its parts can be reached safely. In particular, avoid the accumulation of leaves and dirt near the unit or the deposit of materials that may give off bad smells or irritant substances that can be put into the room with the fresh air. -
Page 77: Periodic Checks
8.4 Periodic checks Carry out periodic checks to make sure the unit is working correctly: RECOMMENDED OPERATION FREQUENCY Check the operation of all the control and safety equipment as described previously. Monthly Check the tightness of the electrical terminals in the electrical control panel and in the terminal boards of the compressors. -
Page 78: Unscheduled Maintenance
8.5 Unscheduled maintenance After correctly starting-up and carrying out the relevant checks, the units normally do not need any intervention by the customer service in order to check the charge of the refrigerant gas. 8.5.1 Special work With use of the unit, particular situations may occur that require work to be carried out promptly. Any work performed on the unit in the event of an emergency must be carried out in safe conditions and by authorised and qualified staff, as described by Annex HH of IEC 60335-2-40:2018, by local legislations and, with respect to europen standards, by EN 378-4 and EN 13133. -
Page 79: Decommissioning
DECOMMISSIONING With reference to the European waste management directive, we inform you of the following: - The owner of electrical and electronic equipment (EEE) is obliged not to dispose of it as non-separated municipal waste, and must dispose of it via separate collection through public or private waste collection systems as required by local regulations. - Page 84 4P645202-2...
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