03_innen_engl_sk_3302 Installation Directions
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2014-09-04
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Schaltschrank-Kühlgerät Cooling unit Climatiseur Koelaggregat Kylaggregat Condizionatori per armadi di comando Refrigerador para armarios SK 3302.xxx SK 3302.3xx SK 3303.xxx SK 3304.xxx SK 3305.xxx Montage-, Installations- und Bedienungsanleitung Assembly and operating instructions Manuel d’installation et de maintenance Montage- en bedieningshandleiding Montage- och hanteringsanvisning Istruzioni di montaggio e funzionamento Instrucciones de montaje SK 3328.xxx SK 3329.xxx SK 3332.xxx SK 3361.xxx SK 3366.xxx Contents 1 Notes on documentation. . . . . . . . . . 4 1.1 1.2 1.3 1.4 Associated documents. . . . . . . . . . . . . . . . CE labelling . . . . . . . . . . . . . . . . . . . . . . . . . Retention of documents. . . . . . . . . . . . . . . Symbols used . . . . . . . . . . . . . . . . . . . . . . . 4 4 4 4 2 Safety instructions. . . . . . . . . . . . . . . 4 3 Device description . . . . . . . . . . . . . . . 5 3.1 3.1.1 3.1.2 3.1.3 3.1.4 3.1.5 3.1.6 3.1.7 3.1.8 3.2 3.3 Functional description . . . . . . . . . . . . . . . . How it works . . . . . . . . . . . . . . . . . . . . . . . . . Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bus mode (e-Comfort controller only). . . . . . Safety equipment . . . . . . . . . . . . . . . . . . . . . Condensation . . . . . . . . . . . . . . . . . . . . . . . . Filter mats . . . . . . . . . . . . . . . . . . . . . . . . . . . Door limit switch . . . . . . . . . . . . . . . . . . . . . . Additional interface X3 . . . . . . . . . . . . . . . . . Proper usage . . . . . . . . . . . . . . . . . . . . . . . . Scope of supply . . . . . . . . . . . . . . . . . . . . . 5 5 5 5 6 6 6 6 7 7 7 4 Assembly and connection . . . . . . . . 7 4.1 4.2 4.2.1 4.2.2 4.3 4.3.1 4.3.2 4.3.3 4.3.4 4.4 4.5 4.5.1 4.5.2 4.5.3 4.5.4 4.5.5 4.5.6 4.6 4.6.1 4.6.2 4.6.3 4.6.4 4.7 4.7.1 4.7.2 4.7.3 Choosing the installation site . . . . . . . . . . 7 Assembly instructions . . . . . . . . . . . . . . . . 7 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Layout of the electronic components in the enclosure . . . . . . . . . . . . . . . . . . . . . . 8 Fitting the cooling unit . . . . . . . . . . . . . . . . 8 Cutting out on the enclosure. . . . . . . . . . . . . 9 External mounting of the cooling unit . . . . . . 9 Partial internal mounting of the cooling unit . . . . . . . . . . . . . . . . . . . . . 9 Full internal mounting of the cooling unit . . 11 Connecting the condensate discharge. . 12 Notes on electrical installation . . . . . . . . 12 Connection data . . . . . . . . . . . . . . . . . . . . . 12 Overvoltage protection and supply line load . . . . . . . . . . . . . . . . . . 12 Three-phase devices . . . . . . . . . . . . . . . . . 12 Door limit switch . . . . . . . . . . . . . . . . . . . . . 13 Notes on the flicker standard . . . . . . . . . . . 13 Potential equalisation . . . . . . . . . . . . . . . . . 13 Carrying out the electrical installation . . 13 Bus connection (only in conjunction with several units with an e-Comfort controller) . . . . . . . . . . . . . . . 13 Connection X3 for serial interface. . . . . . . . 13 Installing external transformers. . . . . . . . . . 13 Installing the power supply. . . . . . . . . . . . . 14 Finalising assembly . . . . . . . . . . . . . . . . . 20 Installing the filter media . . . . . . . . . . . . . . 20 Fitting the cooling unit. . . . . . . . . . . . . . . . . 20 Setting the filter mat monitor (only with e-Comfort controller). . . . . . . . . . 20 Rittal cooling unit assembly and operating instructions 5 Commissioning . . . . . . . . . . . . . . . . 20 6 Operation . . . . . . . . . . . . . . . . . . . . . 21 6.1 6.1.1 6.1.2 6.1.3 6.1.4 6.1.5 6.2 6.2.1 6.2.2 6.2.3 6.2.4 6.2.5 6.2.6 6.2.7 Control using the Basic controller . . . . . Properties . . . . . . . . . . . . . . . . . . . . . . . . . . Operating and error display. . . . . . . . . . . . Test mode for the Basic controller . . . . . . . Setting the temperature . . . . . . . . . . . . . . . Resetting the Basic controller . . . . . . . . . . Control using the e-Comfort controller . Properties . . . . . . . . . . . . . . . . . . . . . . . . . . Eco-mode. . . . . . . . . . . . . . . . . . . . . . . . . . Launching test mode . . . . . . . . . . . . . . . . . General programming information . . . . . . . Editable parameters. . . . . . . . . . . . . . . . . . Programming overview . . . . . . . . . . . . . . . Defining system messages for evaluation . . . . . . . . . . . . . . . . . . . . . . . 6.2.8 Setting the master-slave identifier . . . . . . . 6.2.9 Evaluating system messages. . . . . . . . . . . 6.2.10 Resetting the e-Comfort controller . . . . . . . 21 21 22 23 23 23 23 23 24 24 24 25 26 27 28 28 30 7 Inspection and maintenance. . . . . . 30 7.1 7.1.1 7.1.2 General . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Compressed air cleaning SK 3304.xxx, SK 3305.xxx . . . . . . . . . . . . . 30 Compressed air cleaning SK 3328.xxx, SK 3329.xxx, SK 3332.xxx . . 34 8 Storage and disposal. . . . . . . . . . . . 39 9 Technical specifications . . . . . . . . . 39 10 List of spare parts . . . . . . . . . . . . . . 43 11 Appendix: Cut-out and hole sizes . . . . . . . . . . . 47 11.1 11.2 11.3 Dimensions for external mounting . . . . . 47 Dimensions for partial internal mounting . . . . . . . . . . . . . . . . . . . 48 Dimensions for full internal mounting . . 49 3 EN 1 Notes on documentation 1 EN Notes on documentation These assembly instructions are aimed at tradespersons who are familiar with assembly and installation of the cooling unit, and at trained specialists who are familiar with operation of the cooling unit. 1.1 Associated documents There are two sets of instructions for the unit types described here: – Assembly and installation instructions enclosed with the unit in the form of a paper document – Assembly, installation and operating instructions enclosed with the unit in the form of a PDF file (Adobe Acrobat) on CD-ROM We cannot accept any liability for damage associated with failure to observe these instructions. Where applicable, the instructions for any accessories used also apply. 1.2 CE labelling The declaration of conformity is supplied with the unit as a separate document. 1.3 Retention of documents These instructions and all associated documents constitute an integral part of the product. They must be given to the plant operator. The plant operator is responsible for storage of the documents so they are readily available when needed. 1.4 Symbols used Please observe the following safety instructions and other notes in this guide: Symbol for an instructed action: • The bullet point indicates that you should perform an action. Safety and other instructions: 2 Safety instructions Please observe the following general safety instructions when assembling and operating the unit: – Assembly, installation and servicing may only be performed by properly trained specialists. – Screw the enclosure to the floor to prevent it from tipping over when the cooling unit is installed. – Do not obstruct the air inlet and air outlet of the cooling unit inside and outside the enclosure (see also section 4.2.2). – To ensure problem-free opening and closing of the enclosure door, use a ride-up door roller (refer to the accessories in the Rittal Catalogue). This raises the door slightly and balances out the weight of the cooling unit, to prevent buckling of the door and associated seal problems. – The heat loss of the components installed in the enclosure must not exceed the specific useful cooling output of the cooling unit. – When transporting the enclosure with the cooling unit externally mounted, always use an additional shipping brace to support the cooling unit. – The cooling unit must always be transported in an upright position. – Use only original spare parts and accessories. – Do not make any changes to the cooling unit other than those described in these instructions or associated instructions. – Risk of burn injuries! For cooling units with automatic condensate evaporation, the surface of the thermal element will get very hot during operation, and will remain so for some time afterwards. – The mains connector of the cooling unit must only be connected and disconnected with the system de-energised. Connect the pre-fuse specified on the rating plate. Danger! Immediate danger to life and limb! Caution! Potential threat to the product and its environment. Note: Useful information and special features. 4 Rittal cooling unit assembly and operating instructions 3 Device description 3 Device description Depending on the model chosen, your cooling unit may vary in appearance from the illustrations contained in these instructions. However, the functions are identical in principle. into the hermetically sealed cooling circuit provides effective protection against moisture, acid, dirt particles, and foreign bodies within the cooling circuit. Condenser (3) PSAH 8 9 1 14 2 10 3 pressureoperated switch Compressor (2) Condenser fan Filter dryer (5) External circuit Internal circuit Temperature control 4 5 11 6 12 Evaporator coil (1) Expansion valve (4) Evaporator fan 13 Fig. 2: 7 15 16 Fig. 1: Device description Legend 1 Blind rivet nut 2 Evaporator fan 3 Electrical wiring plan 4 X2 master-slave connection 5 X3 optional serial interface 6 X1 terminal strip 7 Air outlet hole 8 Front half of the enclosure 9 Rear half of the enclosure 10 Louvred grille for air outlet 11 Display 12 Infill panel 13 Louvred grille for air inlet 14 Rating plate 15 Condensate discharge 16 Dispatch bag 3.1 Functional description Enclosure cooling units are designed to dissipate heat from enclosures by cooling the air inside the enclosure and so protect the temperature-sensitive components. They are built into the side or rear panel or into the door of the enclosure. 3.1.1 How it works The cooling unit (compression refrigeration system) is comprised of four main components (cf. Fig. 2): the evaporator (1), the coolant compressor (2), the condenser (3), and the control or expansion valve (4), which are connected by suitable pipework. This circuit is filled with a readily boiling substance, the refrigerant. Coolant R134a (CH2FCF3) is chlorinefree. Its ozone destruction potential is 0, making it very eco-friendly. A filter dryer (5) which is integrated Rittal cooling unit assembly and operating instructions Cooling circuit In the evaporator coil (1), the liquid coolant is converted to a gaseous state. The energy needed for this purpose is taken from the enclosure air in the form of heat, which has the effect of cooling the enclosure air. In the compressor (2), the coolant is heavily compressed, so that it achieves a higher temperature inside the condenser (3) than the ambient air. This means that excess heat may be emitted to the ambient air via the surface of the condenser, as a result of which the temperature of the coolant drops and it is converted back into liquid. It is reinjected into the evaporator coil via a thermostatic expansion valve (4), which causes it to cool down further, and is then once again able to absorb the energy from the enclosure air in the evaporator coil. The whole cycle begins again. 3.1.2 Control Rittal enclosure cooling units are fitted with a controller for setting the functions of the cooling unit. Depending on the design, this is either a Basic controller (display of the operating status via LED) or a e-Comfort controller (display plus extended functions, see chapter “6 Operation”, page 21). 3.1.3 Bus mode (e-Comfort controller only) The serial unit interface X2 allows you to create a bus connection with up to ten cooling units using the master-slave cable (shielded, four-wire cable, Model No. SK 3124.100). This allows you to implement the following functions: – Parallel unit control (the cooling units in the network can be switched on and off simultaneously) – Parallel door status message (“door open”) – Parallel collective fault message Data is exchanged via the master-slave connection. During commissioning, assign an address to each unit that also includes the identifier “master” or “slave”. 5 EN 3 Device description EN 3.1.4 Safety equipment – In the cooling cycle, the cooling unit has a tested pressure-operated switch to EN 12 263 which is set to maximum PS (admissible pressure); this operates via an automatic reset device whenever the pressure drops again. – Temperature monitoring prevents the evaporator coil from icing over. If there is a risk of icing, the compressor switches itself off and automatically switches itself back on again at higher temperatures. – The refrigerant compressor and the fans are equipped with thermal winding shields to protect against excess current and excess temperatures. – In order to allow a reduction of pressure inside the compressor and hence a safe restart, once it has been switched off (e.g. upon reaching the set temperature via the door limit switch function or via deenergising), the device will switch back on with a delay of 180 seconds. – The device has floating contacts on the connection pins (terminals 3 – 5), via which system messages from the device may be polled, e.g. using a PLC (1x change-over contact Basic controller, 2 x normally open contacts e-Comfort controller). 3.1.5 Condensation At high levels of humidity and low temperatures inside the enclosure, condensation may form on the evaporator coil. The cooling units (except SK 3302.xxx, SK 3303.xxx and SK 3361.xxx) have automatic, electric condensate evaporation. The thermal component used for this purpose is based on self-regulating PTC technology. Condensate arising on the evaporator coil is collected in a tank in the external circuit of the cooling unit, and partially evaporated via the airflow. When the water level rises, the water enters the PTC thermal component and is evaporated (through-flow heater principle). The water vapour streams out of the cooling unit with the airflow from the external fan. The PTC thermal component is permanently connected and has no switchpoint. It is protected against short-circuits with miniature fuses (F1.1, F1.2). If the fuse has tripped, any condensation is drained off via the safety overflow. For unit types SK 3302.xxx, SK 3303.xxx and SK 3361.xxx, the condensation is routed downwards out of the unit via a drain pipe on the evaporator coil divider panel. For this purpose, a hose must be connected to the condensate nozzle (see “4.4 Connecting the condensate drain”, page 12). External condensate evaporators are available as accessories for these unit types (refer also to the accessories in the Rittal Catalogue). 6 3.1.6 Filter mats The cooling unit condenser is finished all over with a dirt-repelling, easy-to-clean RiNano coating. In many cases, therefore, the use of filter media is unnecessary, particularly in the case of dry dusts. For dry, coarse dust and lint in the ambient air, we recommend installing an additional PU foam filter mat (available as an accessory) in the cooling unit. Depending on the incidence of dust, you will need to replace the filter from time to time. For air containing oil condensation, we recommend the use of metal filters (also available as an accessory). These may be cleaned with suitable detergents and reused. Function of the filter mat monitor: Dirt on the filter mat is automatically determined by measuring the temperature difference in the external circuit of the cooling unit. As the level of filter mat soiling rises, the temperature difference will increase. The nominal value of the temperature difference in the external circuit adapts automatically to the relevant operating points in the performance diagrams. Hence there is no need to readjust the nominal value for different operating points of the cooling unit. 3.1.7 Door limit switch The cooling unit may be operated with a floating door limit switch connected. The door limit switch is not included with the supply (available as an accessory, Model No. PS 4127.010). The door limit switch function causes the fans and the compressor in the cooling unit to be switched off after approximately 15 seconds when the enclosure door is opened (contacts 1 and 2 closed). This prevents the formation of condensation inside the enclosure while the enclosure door is open. In order to prevent damage to the unit, it is equipped with an ON delay: The evaporator fan cuts back in with a delay of approximately 15 seconds after the door has been closed, while the condenser fan and compressor switch on after approximately 3 minutes. Note: – No external voltage must be applied to the door contacts (terminals 1 and 2). – For Basic controller cooling units with 230/115 V and 400 V/2-phase connection, the evaporator fan remains operational even with the door open. Rittal cooling unit assembly and operating instructions 4 Assembly and connection 3.1.8 Additional interface X3 Note: The electrical signals at the interface are of an extra-low voltage (not extra-low safety voltages to EN 60 335). An additional interface card may be connected to the 9-pole SUB-D connector X3 in order to incorporate the cooling unit into higher-level monitoring systems (available as an accessory, interface card Model No. SK 324.200). 3.2 Proper usage Rittal enclosure cooling units were developed and designed in accordance with the state-of-the-art and the recognised rules governing technical safety. Nevertheless, if used improperly, they may pose a threat to life and limb or cause damage to property. The unit is only intended for cooling enclosures. Any other use is deemed improper. The manufacturer will not be liable for any damages caused as a result of improper use, or for incorrect assembly, installation or use. All risk is borne solely by the user. Proper usage also includes the observation of all valid documents and compliance with the inspection and servicing conditions. 3.3 Scope of supply The unit is supplied in a packaging unit in a fully assembled state. Please check the delivery for completeness: Qty. Description 1 Enclosure cooling unit 1 1 1 Dispatch bag: – Assembly and installation instructions – Assembly, installation and operating instructions on CD-ROM – Safety instructions – Self-adhesive tape – Connector X1 – Self-tapping screws – Declaration of conformity – Nuts, washers 1 1 1 4 – 10 1 1 4 Assembly and connection EN 4.1 Choosing the installation site When choosing the installation site for the enclosure, please observe the following: – The site for the enclosure, and hence the arrangement of the cooling unit, must be carefully selected so as to ensure good ventilation (distances between units and distances between the unit and the wall must be at least 200 mm in each case). – The cooling unit must be installed and operated in a vertical position (maximum deviation: 2°). – The site must be free from excessive dirt and moisture. – The ambient temperature must not exceed 55°C. – It must be possible to fit a condensate discharge (see “4.4 Connecting the condensate discharge”, page 12). – The mains connection data as stated on the rating plate of the unit must be guaranteed. 4.2 Assembly instructions 4.2.1 General – Check the packaging carefully for signs of damage. Traces of oil on damaged packaging are an indication of refrigerant loss and leakages. Packaging damage may be the cause of a subsequent functional failure. – The enclosure must be sealed on all sides (IP 54). Increased condensation will occur if the enclosure is not airtight. – In order to avoid excessive condensation inside the enclosure, we recommend installing a door limit switch (e.g. PS 4127.010) which deactivates the cooling unit when the enclosure door is opened (see “3.1.7 Door limit switch”, page 6). Drilling template Tab. 1: Scope of supply Rittal cooling unit assembly and operating instructions 7 4 Assembly and connection EN 4.2.2 Layout of the electronic components in the enclosure Caution! Risk of condensation! When arranging the components inside the enclosure, please ensure that the cold airflow from the cooling unit is not directed at active components. Please also ensure that the cold airflow is not directed at the warm exhaust airflow from active components such as converters. This may lead to an air shortcircuit and therefore prevent adequate climate control, or may even cause the cooling unit’s internal safety devices to cease cooling operation. x Fig. 4: Air circulation inside the enclosure 4.3 Fitting the cooling unit The enclosure cooling unit may optionally be externally mounted on the enclosure (1), partially internally mounted (2) or fully internally mounted (3): 1 Fig. 3: 3 Never direct the cold airflow at active components Air diversion components are available as accessories – please refer to the Rittal catalogue. It is important to ensure even air circulation inside the enclosure. Under no circumstances should air inlet and outlet openings be obstructed, otherwise the cooling performance of the unit will be reduced. Ensure the distance “x” (see Fig. 4) from electronic components and other installed enclosures so that the required air circulation is not obstructed and prevented. 8 2 Fig. 5: Installation method To this end, cut the side panel or door of the enclosure as per the drilling template included with the supply, and drill the relevant holes. Note: Units of type SK 3302.xxx can only be either externally mounted or fully internally mounted. Units of type SK 3332.xxx can only be either externally mounted or partially internally mounted. For mounting the units SK 3328.xxx, SK 3329.xxx and SK 3332.xxx in the TS side panel or rear panel, we recommend the use of enclosure panel fasteners TS 8800.071 (see Rittal Catalogue). Rittal cooling unit assembly and operating instructions 4 Assembly and connection 4.3.1 Cutting out on the enclosure • Stick the supplied drilling template onto the side panel or door of the enclosure using adhesive tape. There are dimensioning lines on the drilling template to suit the various installation options for your cooling unit. • Using the dimension drawings (see Appendix), identify the valid lines and dimensions for your installation type on the drilling template. Risk of injury! Carefully deburr all drilled holes and cut-outs to prevent injuries caused by sharp edges. • Mark, drill and deburr the holes. • Make the cut-outs including the line width as per the drilling template. Deburr the cut-outs. EN Fig. 8: Secure the cooling unit (SK 3302.1xx “external mounting” only) 4.3.3 Partial internal mounting of the cooling unit • Carefully remove the louvred grille and, where applicable, the infill panel, from the enclosure by pulling forwards. • Carefully disconnect the connector from the rear of the display and gently push it inwards through the cable gland. 4.3.2 External mounting of the cooling unit • Cut the supplied sealing tape to the correct length and stick it carefully along the back of the unit so that no gaps are left at the joints. Fig. 6: Attach the sealing tape • Screw the supplied grub screws into the blind nuts on the rear of the unit. • Secure the unit using the supplied washers and nuts. Fig. 9: Remove the louvred grille & disconnect the display Risk of damage! Stability of the cooling unit is only guaranteed in its assembled state. Brace the rear enclosure half to prevent it from falling over before removing the front enclosure half. Fig. 7: Secure the cooling unit (all models except SK 3302.1xx) Rittal cooling unit assembly and operating instructions • Loosen the four nuts on the front enclosure half and pull the enclosure forwards by approx. 5 cm. • Loosen the flat-pin connectors of the PE conductor between the two enclosure halves. • Disconnect the fan connection. • Remove the front enclosure tray completely. 9 4 Assembly and connection EN Fig. 10: Remove the cover • Remove the four spacer bolts. • Cut the supplied sealing tape to the correct length and stick it carefully along the inside of the rear enclosure half so that no gaps are left at the connection points. Fig. 11: Fig. 12: Secure the cooling unit • Connect the fan connector and PE conductor. • Mount the front enclosure tray using the washers and nuts. Attach the sealing tape • Push the rear enclosure half into the mounting cutout and secure it with the four spacer bolts. • Push the display cable through the cable gland of the front enclosure half. Fig. 13: Connect the display connector • Carefully connect the display connector. • Push the louvred grille and, where applicable, the infill panel, onto the enclosure. 10 Rittal cooling unit assembly and operating instructions 4 Assembly and connection 4.3.4 Full internal mounting of the cooling unit • Carefully remove the louvred grille and the infill panel from the enclosure by pulling forwards. • Carefully disconnect the connector from the rear of the display. Only for SK 3302.xxx: • Before installing, remove the four screws as shown. 4x Fig. 16: Only for SK 3302.xxx: Remove the four screws Fig. 14: Remove the louvred grille and disconnect the display • Cut the supplied sealing tape to the correct length and stick it carefully along the front enclosure half so that no gaps are left at the connection points. Fig. 17: Fig. 15: Attach the sealing tape • Loosen the four nuts and washers from the front enclosure half. • Push the unit into the mounting cut-out from the inside of the enclosure, and secure it to the enclosure from the outside using the washers and nuts. Rittal cooling unit assembly and operating instructions Secure the cooling unit • Where necessary, additionally secure the unit using the supplied mounting plates as shown in Fig. 17. • Carefully connect the display connector. • Push the louvred grille and, where applicable, the infill panel, onto the enclosure. 11 EN 4 Assembly and connection 4.4 Connecting the condensate discharge EN Unit types SK 3302.xxx, SK 3303.xxx and SK 3361.xxx support the installation of a condensate discharge hose (Ø 1/2˝). The condensate discharge – must be laid with a suitable and constant gradient (no siphoning) – must be laid without kinks – must not have a reduced cross-section if extended. The condensate hose is available as an accessory (refer also to Accessories in the Rittal Catalogue). Fig. 18: Connecting the condensate discharge • Connect a suitable hose to the condensate nozzle and secure using a hose clip. • Lay the condensate hose into a pay-off or into the external condensate evaporator (refer to accessories in the Rittal Catalogue). 4.5 Notes on electrical installation When performing the electrical installation, it is important to observe all valid national and regional regulations as well as the provisions of the responsible power supply company. Electrical installation must only be carried out by a qualified electrician who is responsible for compliance with the existing standards and regulations. 4.5.1 Connection data – The connected voltage and frequency must correspond to the values stated on the rating plate. – The cooling unit must be connected to the mains via an all-pin isolating device, which ensures at least 3 mm contact opening when switched off. – No additional temperature control may be connected upstream of the unit at the supply end. – Install the pre-fuse specified on the rating plate to protect the cable and equipment from shortcircuits. – The mains connection must ensure low-noise potential equalisation. 12 4.5.2 Overvoltage protection and supply line load – The unit does not have its own overvoltage protection. Measures must be taken by the operator at the supply end to ensure effective lightning and overvoltage protection. The mains voltage must not exceed a tolerance of ±10%. – In accordance with IEC 61 000-3-11, the unit is intended solely for use at sites with a continuous current-carrying capacity (incoming mains power supply) of more than 100 A per phase and with a supply voltage of 400/230 V. If necessary, the power supply company must be consulted to ensure that the continuous current-carrying capacity at the point of connection to the public grid is sufficient for connection of such a unit. – The fans and compressors in single- and threephase units are intrinsically safe (thermal winding protection). The same also applies to the transformer versions of types SK 3304.510, SK 3305.510, SK 3328.510 and SK 3329.510 and to specialvoltage units which are likewise equipped with a transformer. – Install the slow pre-fuse specified on the rating plate (miniature circuit-breaker with appropriate characteristic – e. g. K characteristic – or fuse gG standard type, power circuit-breaker or transformer circuit-breaker) to protect the cable and equipment from short-circuits. Select a suitable circuit-breaker in accordance with the information specified on the rating plate: Set it to the minimum specified value. This will achieve the best shortcircuit protection for cables and equipment. Example: Specified setting range 6.3 – 10 A; set to 6.3 A. 4.5.3 Three-phase devices – The three-phase version of models SK 3304.xxx, SK 3305.xxx, SK 3328.xxx, SK 3329.xxx and SK 3332.xxx must be connected to a TN network with star earthing via a circuit-breaker for plant protection (current setting as per the rating plate). Three-phase units with special voltages must be protected with a circuit-breaker for transformer protection (category AC-3) as per the rating plate. – Units designed for three phase 400/460 V feature additional monitoring of the rotary field or the absence of a phase. If the rotary field is incorrect or a phase is absent, the unit will not run. Rittal cooling unit assembly and operating instructions 4 Assembly and connection 4.5.4 Door limit switch – Each door limit switch must only be assigned to one cooling unit. – Several door limit switches may be connected in parallel and operated on one cooling unit. – The minimum cross-section for the connection cable is 0.3 mm2 for a cable length of 2 m. – The line resistance to the door limit switch must not exceed a maximum of 50 :. – The door limit switch only supports a floating connection; no external voltages. – The contact of the door limit switch must be closed when the door is open. The safety extra-low voltage for the door limit switch is provided by the internal power pack: Current approx. 30 mA DC. • Connect the door limit switch to terminals 1 and 2 of the connector. 4.5.5 Notes on the flicker standard The flicker limits specified in standard EN 61 000-3-3 or -3-11 are adhered to, provided the supply impedance is less than approx. 1.5 :. Where necessary, the unit operator should measure the connected impedance or consult the responsible power supply company. If there is no way of influencing the supply impedance and sensitive installed components (e.g. BUS) are subjected to interference, a line reactor or starting-current limiting device should be connected upstream of the cooling unit to restrict the startup current of the cooling unit. 4.5.6 Potential equalisation If, for EMC reasons, the unit is to be integrated into the existing potential equalisation system at the customer, a conductor with a larger nominal crosssection can be connected to the potential equalisation connection point (attachment points) on wallmounted cooling units. According to the standard, the PE conductor in the mains connection cable is not classified as an equipotential bonding conductor. When interconnecting, please note the following: – De-energise the cooling units to be connected. – Ensure proper electrical insulation. – Make sure the cables are not laid in parallel to power lines. – Make sure that the lines are short. Caution! Regarding the last slave unit in the group, do not, under any circumstances, connect the remaining socket of the Y cable SK 3124.100 into interface X3 of the cooling unit! 4.6.2 Connection X3 for serial interface The interface card (Model No. SK 3124.200) may be connected to X3. This is used to evaluate system messages in a PLC, for remotely setting parameters and monitoring, or for integration into the facility management system. 4.6.3 Installing external transformers For SK 3361.x40 only. Attachment of the unit’s rear panel Electrical connection cooling unit 4.6 Carrying out the electrical installation 4.6.1 Bus connection (only in conjunction with several units with an e-Comfort controller) When using several cooling units, the serial device interface X2 can be used to connect up to ten cooling units with the bus cable (Model No. SK 3124.100). EN Mounted on 35 mm support rail DIN EN 50 022 230 V Connection at the customer’s Fig. 19: Installing external transformers (SK 3361.x40 only) Note: The electrical signals at the X2 interface are of an extra-low voltage (not extra-low safety voltages to EN 60 335-1). Rittal cooling unit assembly and operating instructions 13 4 Assembly and connection EN CMC 1 I/O unit 2 RTT Master Adr.: 09 RTT Slave Adr.: 11 X3 St. X2 Adr.: 12 X3 X2 X3 Bu. RTT Slave Adr.: 19 X1 X1 X1 X2 RTT Slave X2 X1 X3 X2 St. X2 St. X2 X3 St. X2 X2 X2 X2 X2 X2 Bu. St. Bu. St. Bu. 3 Fig. 20: Connection example: Master-slave operation Legend 1 Serial interface (Model No. SK 3124.200) 2 Serial interface cable 3 Master-slave bus cable (Model No. SK 3124.100) RTT Rittal TopTherm cooling units X1 Supply connection/door limit switch/alarms X2 X2 Adr.: 06 1 X10 L1 L2 N X2 Adr.: 11 2 PE 1 2 3 4 5 X10 L1 L2 L3 PE 1 2 3 4 5 L2 N Master-slave connection Sub-D, 9-pole Serial interface Sub-D, 9-pole Sub-D connector, 9-pole Sub-D jack, 9-pole Address X2 Adr.: 12 2 X10 L1 X2 X3 St. Bu. Adr. X2 Adr.: 13 2 PE 1 2 3 4 5 X2 Adr.: 14 2 X10 L1 L2 L3 PE 1 2 3 4 5 X10 L1 L2 L3 PE 1 2 3 4 5 Adr.: 15 2 X10 L1 L2 L3 PE 1 2 3 4 5 X2 L1 L2 N PE 1 2 3 4 5 X10 Adr.: 16 1 2 3 Fig. 21: 4 3 2 Connection example: Door limit switch and master-slave operation Legend 1 Master cooling unit 2 Slave cooling units 3 2-door enclosure with two door limit switches 4 Enclosure with door limit switch 14 5 6 4 3 4 4.6.4 Installing the power supply • Complete the electrical installation by following the wiring plan on the rear of the cooling unit (see Fig. 1 on page 5, for key see page 19). • If you would like the system messages from the cooling unit to be evaluated via the system message relay, you should also connect a suitable low-voltage cable to connection clamps 3 – 5. Rittal cooling unit assembly and operating instructions 4 Assembly and connection EN SK 3302.100/.110, SK 3302.300/.310 21 PE 5 Mains A2 22 S1 L1 X1 L2 N 1 PE 1 2 3 L N Power L1 2 1 3 2 5 4 3 R1 L2 2 1 2 NTC I red S1 Kx B2 8 Term A1 B1 2 NTC E blue 2 F2 1 M2 1 2 3 M1 1 2 3 P M4 1 2 3 F2 C4 C1 S R C2 C M M 1~ 1~ M2 M4 F3 M1 Fig. 22: Electrical wiring plan no. 1 21 SK 3303.500/.510, SK 3303.600/.610, SK 3361.500/.510, SK 3361.600/.610 Mains 22 S1 PE 5 L2 N X1 L1 1 PE 2 3 5 4 X3 X2 3 1 2 3 1 2 L N Power S1 K2 3 2 1 K1 A2 8 MS1 Serial NTC_I NTC_E Kx NTC_C PE NTC_A M2 1 2 3 M4 1 2 3 F2 2 2 B1 B2 B3 B4 B5 4 Term M1 1 2 3 2 2 Level A1 2 2 1 P F2 C4 PE C1 S R C C2 F3 M M 1~ 1~ M2 M4 M1 Fig. 23: Electrical wiring plan no. 2 Rittal cooling unit assembly and operating instructions 15 4 Assembly and connection EN SK 3361.540/.640 Mains L2 PE 21 L1 5 X2 S1 22 T1 L2 N L1 X1 PE 2 1 1 2 3 L X3 PE 3 230 V PE 1 N 4 3 2 3 2 1 B1 NTC I red Serial MS1 K1 Power A2 5 2 K2 S1 PE 8 2 B2 NTC E blue Kx 2 B3 NTC C white 2 PE B4 NTC A yellow 2 B5 Level green A1 4 Term M4 1 2 3 M2 1 2 3 M1 1 2 3 2 1 F2 F2 P PE C1 S R M C F3 M 1~ 1~ M2 M4 M1 Fig. 24: Electrical wiring plan no. 3 21 SK 3304.500/.600/.510/.520/.504/.514/.610 S1 22 Mains PE X2 5 X1 L1 L2 L2 L1 PE N 1 2 3 5 4 A2 PE E1 F11 X3 3 PE 6 T1 L N PE 1 2 3 1 L S1 N Power 2 3 2 1 MS1 NTC I red Serial NTC E blue K1 K2 NTC C white Kx NTC A yellow A1 Level green Term M1 1 2 3 M2 1 2 3 M4 1 2 3 F2 2 B1 2 B2 2 B3 2 B4 2 B5 4 2 1 P F2 C1 1 R S F3 3 M1 Fig. 25: 16 M M 1~ 1~ M2 M4 C Electrical wiring plan no. 4 Rittal cooling unit assembly and operating instructions 4 Assembly and connection SK 3305.500/.510/.504/.514/.520, SK 3328.500/.510/.504/.514/.520, SK 3329.500/.510/.504/.514/.520, SK 3305.600/.610, SK 3328.600/.610, SK 3329.600/.610 5 X2 21 L1 L2 N X3 PE S1 Mains PE 22 PE T1 L1 A2 L2/N F11 E1 X1 L1 F10 L2 N F11 1 1 PE 2 3 6 3 5 4 E1 2 3 1 2 3 L 1 2 N 3 2 1 K2 S1 Power 2 NTC I red Serial MS1 K1 Kx 1 2 3 F2 B5 4 Term M4 B4 2 Level green M2 B3 2 NTC A yellow M1 1 2 3 B2 2 NTC C white A1 B1 2 NTC E blue 2 P 1 1 2 3 F2 A3 A R C 4 C12 P 1 C11 2 5 M 1~ M2 M4 M1 F3 Fig. 26: M 1~ Electrical wiring plan no. 5 SK 3304.540, SK 3304.544, SK 3305.540, SK 3305.544, SK 3328.540/.544, SK 3329.540/.544, SK 3304.640, SK 3305.640, SK 3328.640, SK 3329.640, SK 3366.540, SK 3366.640 Mains 22 PE X1 L1 L2 L3 1 PE 2 3 4 21 5 S1 X3 X2 5 3 F11 F12 8 A2 E1 T1 3 2 1 1 2 Power 2 4 K2 1 3 MS1 NTC I red Serial K1 NTC E blue S1 NTC C white Kx NTC A yellow Level green A1 M1 1 2 3 4 Term F4 M2 1 2 3 4 1 2 3 F3 F2 1 2 3 4 M4 F5 1 2 3 1 2 2 2 2 2 2 B1 B2 B3 B4 B5 4 P F2 U V M F3 W M 3~ 3~ M2 M4 M1 Fig. 27: Electrical wiring plan no. 6 Rittal cooling unit assembly and operating instructions 17 EN 4 Assembly and connection EN 21 SK 3366.500/.510/.600/.610 5 S1 Mains 22 L1 L2 N PE X2 A2 X3 T1 L2 N X1 L1 L1 L2/N F11 F10 E1 1 PE 2 3 3 5 4 6 F11 E1 1 2 3 1 2 3 L 1 2 N 3 2 1 K2 Serial M51 NTC I red K1 S1 Power NTC E blue Kx NTC C white NTC A yellow A1 Level green 2 B1 2 B2 2 2 B3 B4 2 B5 4 Term F2 M1 3 M2 1 2 1 2 1 3 2 2 P 1 M4 3 F2 A1 A3 1 1 C1.2 2 C1.1 C4 2 5 A P C2 M M 1~ 1~ M2 M4 1~ F3 C M1 Fig. 28: Electrical wiring plan no. 7 21 SK 3332.540/.640 S1 22 Mains A2 PE L2 L1 X1 6 L3 PE 1 2 3 X2 5 4 X3 3 8 F11 F12 E1 T1 3 R 2 S 1 1 2 2 4 1 3 MS1 T K2 Serial K1 2 2 NTC E blue S1 Power NTC I red NTC C white Kx 2 2 NTC A yellow Level green A1 Term M1 F3 1 2 3 4 1 2 3 U V F2 F4 M2 4 1 2 3 4 1 2 3 M4 F5 1 2 3 1 2 B1 B2 B3 B4 B5 4 2 F2 M M P 3~ 3~ M2 M4 W M1 Fig. 29: 18 Electrical wiring plan no. 8 Rittal cooling unit assembly and operating instructions 4 Assembly and connection Legend A1 A2 A3 B1 B2 B3 B4 B5 C1.2 C1.1, C2, C4 E1 F2 F3 F11/F12 K1 K2 L1 L2 M1 M2 M4 R1 S1 T1 X1 X2 X3 Power PCB Display terminal Starter relay and RC element Temperature sensor, internal temperature Icing hazard temperature sensor Condenser temperature sensor Ambient temperature sensor Condensate warning sensor (optional) Start-up capacitor Running capacitors Condensate evaporator PSAH pressure-operated switch (3302.1x0 has bridge instead of pressostat) Bimetal contact compressor Miniature fuses, condensate evaporator Relay collective fault 1 Relay collective fault 2 LED operational green LED alarm red Compressor Condenser fan Evaporator fan Potentiometer for setting the temperature Door limit switch (without door limit switch: terminal 1, 2 open) Transformer (optional) Main terminal strip Master-slave connection Optional interface EN Note: For technical data refer to the rating plate. AC DC cos f = 1 L/R = 20 ms I max. = 2 A U max. = 250 V I min. = 100 mA U max. = 200 V U min. = 18 V I max. = 2 A Tab. 2: Contact data Rittal cooling unit assembly and operating instructions 19 5 Commissioning 4.7 Finalising assembly EN 4.7.1 Installing the filter media The cooling unit condenser is finished all over with a dirt-repelling, easy-to-clean RiNano coating. In many cases, therefore, the use of filter media is unnecessary, particularly in the case of dry dusts. For dry, coarse dust and lint in the ambient air, we recommend installing an additional PU foam filter mat (available as an accessory) in the cooling unit. For air containing oil condensation, we recommend the use of metal filters (also available as an accessory). When used in textile plants with heavy lint contamination, lint screens should be used (available as an optional extra). • Pull the louvred air inlet grille from the enclosure. • Insert the filter mat into the louvred grille as shown in Fig. 30 and push it back onto the enclosure. 4.7.3 Setting the filter mat monitor (only with e-Comfort controller) Function of the filter mat monitor: Dirt on the filter mat is automatically detected by measuring the temperature difference in the external circuit of the cooling unit (see “6.2.6 Programming overview”, page 26). As the level of filter mat soiling rises, the temperature difference will increase. The nominal value of the temperature difference in the external circuit adapts automatically to the relevant operating points in the performance diagrams. Hence there is no need to readjust the nominal value for different operating points of the cooling unit. 5 Commissioning Caution! Risk of damage! The oil must collect in the compressor in order to ensure effective lubrication and cooling. Do not operate the cooling unit for at least 30 min. after assembling the equipment. Fig. 30: Installing the filter mat 4.7.2 Fitting the cooling unit For partial and full internal mounting only. • Connect the connector to the rear of the display. • Place the louvred grille onto the unit at the front, and press it down until you hear it snap into place. Fig. 31: 20 • Once all the assembly and installation work is complete, switch on the power supply to the cooling unit. The cooling unit starts running: – With Basic controller: The green operating LED (“line”) is illuminated. – With e-Comfort controller: The software version of the controller first appears for approx. 2 sec., followed by “ECO” for activated eco-mode. Then the enclosure internal temperature appears in the 7-segment display. You can now make your individual settings on the unit, e.g. set the temperature or (with e-Comfort controller only) assign the network identifier, etc. (refer to the “Operation” chapter). Connect the display and attach the louvred grille Rittal cooling unit assembly and operating instructions 6 Operation 6 Operation You can operate the cooling unit using the controller on the front of the device (Fig. 1, no. 11, page 5). Depending on the model, the unit is equipped with a Basic or an e-Comfort controller. 6.1 Control using the Basic controller For unit types SK 3302.xxx. 1 3 4 2 5 Fig. 32: Basic controller Legend 1 Controller trim panel 2 Temperature setting 3 LED green (“line”) 4 LED red (“alarm”) 5 Reset button Rittal cooling unit assembly and operating instructions 6.1.1 Properties – Two voltage variants are supported: – 115 V – 230 V – Integral start-up delay and door limit switch function – Protective function to prevent icing – Monitoring of all motors (compressor, condenser fan, evaporator fan) – Phase monitoring for three-phase units – Visualisation of the operating status via LED display: – Voltage on, unit operational – Door open (only if door limit switch installed) – Warning of overtemperature – High-pressure-operated switch has switched – Switching hysteresis: 5 K. If the cooling unit is oversized and compressor running times are < 1 minute the switching hysteresis is automatically increased to protect the cooling unit. – Floating system message contact in case of overtemperature – Temperature setting (setting range 30 – 55°C) via potentiometer – Test function – System messages via flashing mode (see “6.1.2 Operating and error system”, page 22) EN The cooling unit operates automatically i.e. after switching on the power supply, the evaporator fan (see Fig. 2, page 5) will run continuously and permanently circulate the internal enclosure air. The built-in Basic controller ensures automatic normal shutdown operation of the cooling unit by the value of the fixed preset switching difference of 5 K. 21 6 Operation EN 6.1.2 Operating and error display The Basic controller monitors and controls the cooling unit. It indicates the operating and error status via the green and red LEDs (Fig. 32, no. 3 and 4): LED Status Cause Solution Green (line) Illuminated Voltage present, unit operational – Flashing Only with door limit switch installed: Enclosure door open In order to avoid condensation, close the enclosure door as quickly as possible. Only with door limit switch installed: Enclosure door closed Check the position of the door limit switch. Red (alarm) Alarm/error/warning Number of flash intervals for the red LED Flash interval Implement a reset Device reset (12) |_|_|_|_|_|_|_|_|_|_|_|*****|_|_|_|_|_|_|_|_|_|_|_| High pressure alarm (0) |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_| Sensors Potentiometer defective or display error (3) |_|_|*****|_|_|*****|_|_|*****|_|_|*****|_|_|***** Interior temperature sensor defective (4) |_|_|_|*****|_|_|_|*****|_|_|_|*****|_|_|_|***** Anti-icing sensor defective (5) |_|_|_|_|*****|_|_|_|_|*****|_|_|_|_|*****|_|_|_|_| Compressor overloaded (6) |_|_|_|_|_|*****|_|_|_|_|_|*****|_|_|_|_|_|***** Interior fan overloaded (7) |_|_|_|_|_|_|*****|_|_|_|_|_|_|*****|_|_|_|_|_|_| Exterior fan overloaded (8) |_|_|_|_|_|_|_|*****|_|_|_|_|_|_|_|***** Device status/ condition Overload mode (heat loss) (9) |_|_|_|_|_|_|_|_|*****|_|_|_|_|_|_|_|_|***** Warning (ambient conditions) Anti-icing alarm (2) |_|*****|_|*****|_|*****|_|*****|_|*****|_|*****|_| No display No power – Check power supply Rotary current phase monitoring: “LED off” = Incorrect phase connection – Swap phases Overload Off Tab. 3: Operating and error display of the Basic controller Key to flash intervals | = 500 ms (red LED on) _ = 500 ms (red LED off) ***** = 3 s pause (red LED off) The overtemperature message (red LED illuminated) may also be polled via an integral floating contact on the connection clamp of the cooling unit (system message relay with changeover contact, see connection diagrams under “4.6.4 Installing the power supply”, page 14): 22 – Terminal 3: NC (normally closed) – Terminal 4: C (connection of the supply voltage to the system message relay) – Terminal 5: NO (normally open) The NC and NO definitions refer to the de-energised state. As soon as power is applied to the cooling unit, the system message relay picks up, so that the relay contacts change status (contact 3 – 4 open; contact 4 – 5 closed). This is the normal operating state of the cooling unit. As soon as an error message occurs or the power supply is interrupted, the relay drops out and contact 3 – 4 is closed. Rittal cooling unit assembly and operating instructions 6 Operation 6.1.3 Test mode for the Basic controller The Basic controller is equipped with a test function whereby the cooling unit commences cooling operation independently of the set temperature or door limit switch function. First you must dismantle the trim panel of the controller. • Switch off the mains voltage. • Remove the louvred grille or infill panel in which the controller is installed. • Release the display lock from behind and pull it forwards slightly. To change the temperature setting: • Dismantle the trim panel of the controller as described in “6.1.3 Test mode for the Basic controller”, page 23. • Set the required temperature on the temperature setting device (Fig. 32, page 21). • Carefully push the trim panel onto the display until you hear it snap into place. • Push the display back into the infill panel or louvred grille. • Re-attach the louvred grille or infill panel to the cooling unit. 6.1.5 Resetting the Basic controller Following a high-pressure alarm in the cooling cycle, and once the cause has been rectified, you will need to manually reset the Basic controller: • Dismantle the trim panel of the Basic controller as described in “6.1.3 Test mode for the Basic controller”, page 23. • Press the reset button (Fig. 32, no. 5) for at least 3 sec. The red LED is extinguished. • Re-install the Basic controller. Fig. 33: Loosen the trim panel of the Basic controller • Carefully raise the trim panel, e.g. using your thumb or a flat screwdriver, and remove it. You can now start test mode. • Rotate the potentiometer to the left-hand stop, then hold the rubberised potentiometer display down while you re-connect the mains voltage. The cooling unit will commence operation and the green LED will flash (I_II_I_II_ . . .). Test mode is completed after approximately 5 minutes. The unit switches off and changes to normal operation. Key I = LED 500 ms on _ = LED 500 ms off In normal operation, the green LED is permanently illuminated. • Next, rotate the potentiometer back to the required setpoint. 6.1.4 Setting the temperature Note: With the Basic controller, the temperature is preset at the factory to +35°C. In order to save energy, do not set the temperature any lower than is actually necessary. Rittal cooling unit assembly and operating instructions 6.2 Control using the e-Comfort controller For unit types SK 33xx.5xx and SK 33xx.6xx. 1 4 Fig. 34: 2 3 e-Comfort controller Legend 1 Programming button, also display of the set temperature unit (degrees Celsius) 2 Set button 3 Programming button, also display of the set temperature unit (degrees Fahrenheit) 4 7-segment display 6.2.1 Properties – Three voltage variants are supported: – 115 V – 230 V – 400/460 V, 3-phase, supports multiple voltages without rewiring – Integral start-up delay and door limit switch function 23 EN 6 Operation EN – Protective function to prevent icing – Monitoring of all motors (compressor, condenser fan, evaporator fan) – Phase monitoring for three-phase units – Master-slave function with a maximum of ten units. One device functions as a master unit. Once the set temperature is reached by one of the connected slave devices or in the event of the door limit switch function, the affected slave unit will report to the master unit, which will switch all the other cooling units on or off as required. – Switching hysteresis: Adjustable within the range 2 – 10 K, preset to 5 K. – Visualisation of the current enclosure internal temperature and all error messages in the 7-segment display. – Using an interface card (Model No. SK 3124.100), the unit may be incorporated into higher-level remote monitoring systems such as the Rittal Computer Multi Control CMC. The cooling unit operates automatically i.e. after switching on the power supply, the evaporator fan (see Fig. 2, page 5) starts to run and circulates the internal enclosure air. The compressor and condenser fan are regulated by the e-Comfort controller. The e-Comfort controller has a 7-segment display (Fig. 34, no. 4). After switching on the power supply, the current software version initially appears on this display for approx. 2 seconds, as well as the activated eco-mode. Followed by a preset option (e. g. t10) or the temperature. In regular operation, the display shows both the temperature (in degrees Celsius or Fahrenheit – users may switch between the two) and any error messages. The current enclosure internal temperature is usually displayed permanently. In the event of an error message, this will alternate with the temperature display. The unit is programmed using buttons 1 – 3 (Fig. 34). The relevant parameters also appear in the display. 6.2.2 Eco-mode All Rittal TopTherm cooling units with e-Comfort controller from firmware 3.2 have the energy-saving eco-mode, which is activated in the delivered state. The eco-mode is used to save energy in the cooling unit if there is no thermal load, or there is a low thermal load in the enclosure (e. g. standby operation, no production or weekend). During this process the evaporator fan in the internal circuit is switched off as appropriate if the actual enclosure internal temperature drops to 10 K below the setpoint temperature set. To reliably measure the internal temperature also during this process, the fan starts cyclically for 30 sec. (see Fig. 35). If the internal temperature reaches the range 5 K below the setpoint set again, the fan switches back to continuous operation. 24 If required, the eco-mode can be deactivated via the control display. For this purpose switch the parameter from 1 to 0 in the programming level (see Tab. 4, page 25). The fan then runs continuously. Setpoint –5°C Setpoint –10°C Internal temperature ON OFF Internal fan status 10 min. 10 min. Time 30 sec. Fig. 35: Diagram of eco-mode 6.2.3 Launching test mode The e-Comfort controller is equipped with a test function whereby the cooling unit commences cooling operation independently of the set temperature or door limit switch function. • Simultaneously press buttons 1 and 2 (Fig. 34) for at least 5 sec. The cooling unit will commence operation. After approximately 5 minutes, test mode will end. The unit switches off and changes to normal operation. 6.2.4 General programming information Using buttons 1, 2 and 3 (Fig. 34) you can change 24 parameters within the preset ranges (min. value – max. value). Tables 4 and 5 show the parameters which can be altered. Fig. 36 of page 26 shows which buttons must be pressed. Note on switching hysteresis: With a low hysteresis and short switching cycles, there is a risk that cooling may not be adequate or that only partial sections of the enclosure are cooled. If the cooling unit is oversized and compressor running times are < 1 minute the switching hysteresis is automatically increased to protect the cooling unit. Note on temperature settings: With the e-Comfort controller, the temperature is preset at the factory to +35°C. In order to save energy, and due to the risk of increased condensation, do not set the temperature lower than that actually necessary. Note on useful cooling output: Interactive performance diagrams for calculating the useful cooling output may be found at www.rittal.com. Rittal cooling unit assembly and operating instructions 6 Operation • Keep the programming button ▲ (°C) held down until “22” appears. • Press button 2 (“Set”) to confirm the code. You can now alter the parameter within the preset limits. • Press one of the programming buttons ▲ (°C) or ▼ (°F) until the required value appears. • Press button 2 (“Set”) to confirm the change. You can now alter other parameters in the same way. There is no need to re-enter the authorisation code “22”. • To exit programming mode, press button 2 (“Set”) again for approximately 5 sec. “Acc” will appear in the display to indicate that the changes have been saved. The display will then switch back to regular operation (enclosure internal temperature). You can also program the e-Comfort controller using a diagnosis software package (Model No. SK 3159.100), the supply of which also includes a connection cable to the PC. The cable connector on the rear of the e-Comfort controller display serves as an interface. In principle, the programming is identical for all editable parameters. To enter programming mode: • Press button 2 (“Set”) for approx. 5 sec. The controller is now in programming mode. While in programming mode, if you do not press any buttons for approx. 30 sec., the display will first flash, then the controller will switch back to normal display mode. The “Esc” display indicates that any made changes have not been saved. • Press the programming buttons ▲ (°C) or ▼ (°F) to switch back and forth between the editable parameters (see tables 4 and 5). • Press button 2 (“Set”) to select the displayed parameter for editing. The current value of this parameter is displayed. • Press one of the programming buttons ▲ (°C) or ▼ (°F). The “Cod” display will appear. In order to be able to change a value, you must enter the authorisation code “22”. 6.2.5 Editable parameters See also Fig. 36 on page 26. Progr. level Display screen Parameter Min. value Max. value Factory setting Description 1 St Internal enclosure temperature setpoint Ti 20 55 35 The setting of the enclosure internal temperature is preset at the factory to 35°C and may be altered within a range of 20 – 55°C. 2 Fi Filter mat monitoring 10 60 99 (= off) To activate filter mat monitoring, set the display to at least 10 K above the temperature differential displayed in programming mode “Fi”. Filter mat monitoring is preset to “deactivated” in the factory (99 = off). 3 Ad Master-slave identifier 0 19 0 See “6.2.8 Setting the master-slave identifier”, page 28. 4 CF Temperature conversion °C/°F 0 1 0 The temperature display can be switched from °C (0) to °F (1). The corresponding LED displays the current unit of temperature. 5 H1 Setting for switching difference (hysteresis) 2 10 5 The cooling unit is preset in the factory to a switching hysteresis of 5 K. This parameter should only be changed in consultation with us. Please contact us for advice. 6 H2 Differential for error message A2 3 15 5 If the internal enclosure temperature exceeds the set value by more than 5 K, then error message A2 (enclosure internal temperature too high) appears on the display terminal. If necessary, the differential may be altered here within the range of 3 – 15 K. 26 ECO Eco-mode operation 0 1 1 Eco-mode OFF: 0 / Eco-mode ON: 1 Tab. 4: Editable parameters Rittal cooling unit assembly and operating instructions 25 EN 6 Operation 6.2.6 Programming overview = 5 sec. = 5 sec. EN Fig. 36: 26 Programming overview Rittal cooling unit assembly and operating instructions 6 Operation 6.2.7 Defining system messages for evaluation System messages are shown on the display screen of the e-Comfort controller via the displays A1 to A20 and E0. A more detailed explanation of the system messages may be found in section “6.2.9 Evaluating system messages”, page 28. See also Fig. 36 on page 26. Progr. level Display screen Min. value Max. value Factory setting Type or location of fault 7 A1 0 2 0 Enclosure door open 8 A2 0 2 0 Internal temperature of enclosure too high 9 A3 0 2 0 Filter monitoring 10 A4 0 2 0 Ambient temperature too high/too low 11 A5 0 2 0 Icing hazard 12 A6 0 2 1 PSAH pressure-operated switch 13 A7 0 2 2 Evaporator coil 14 A8 0 2 1 Condensate warning 15 A9 0 2 1 Condenser fan blocked or defective 16 A10 0 2 1 Evaporator fan blocked or defective 17 A11 0 2 2 Compressor 18 A12 0 2 1 Condenser 19 A13 0 2 1 Ambient temperature sensor 20 A14 0 2 1 Icing temperature sensor 21 A15 0 2 1 Condensate warning temperature sensor 22 A16 0 2 1 Internal temperature sensor 23 A17 0 2 1 Phase monitoring 24 A18 0 2 0 EPROM 25 A19 0 2 0 LAN/Master-Slave Tab. 5: System messages which may be evaluated via relays The system messages A1 – A19 may additionally be evaluated via two floating system message relays. In this way, one of the two system message relays may be allocated to each system message. System alarm relay with normally open contact: see connection diagrams under “4.6.4 Installing the power supply”, page 14: – Terminal 3: NO (normally open, relay 2) – Terminal 4: C (connection of the supply voltage to the system message relay) – Terminal 5: NO (normally open, relay 1) This is the normal operating state of the cooling unit. As soon as a system message occurs or the power supply is interrupted, the corresponding relay will drop out and open the contact. Program system messages with the value 0: System message is not sent to the system message relay, but merely appears in the display 1: System message is evaluated by relay 1 2: System message is evaluated by relay 2 The definition NO refers to the de-energised state. As soon as power is applied to the cooling unit, both system message relays (relay 1 and 2) energise. Rittal cooling unit assembly and operating instructions 27 EN 6 Operation EN 6.2.8 Setting the master-slave identifier When several cooling units are connected together (maximum ten), one of the cooling units must be defined as the “master” and the others as “slaves”. For this purpose, assign a corresponding identifier (address) to each cooling unit which will enable the cooling unit to be identified in the network. If one of the slave units reaches the set temperature or if the door limit switch function is activated, the affected slave unit will report to the master unit, which then deactivates all the other cooling units. Notes: – Only one unit may be configured as master, and its identifier must match the number of slave units connected. – The slave units must have different identifiers. – The identifiers must be numbered in ascending order without any gaps. On the master cooling unit (00 = factory setting), set the number of slave units present in the network: 01: Master with 1 slave cooling unit 02: Master with 2 slave cooling units 03: Master with 3 slave cooling units 04: Master with 4 slave cooling units 05: Master with 5 slave cooling units 06: Master with 6 slave cooling units 07: Master with 7 slave cooling units 08: Master with 8 slave cooling units 09: Master with 9 slave cooling units 28 On the slave cooling unit (00 = factory setting), set its own address: 11: Slave cooling unit no. 1 12: Slave cooling unit no. 2 13: Slave cooling unit no. 3 14: Slave cooling unit no. 4 15: Slave cooling unit no. 5 16: Slave cooling unit no. 6 17: Slave cooling unit no. 7 18: Slave cooling unit no. 8 19: Slave cooling unit no. 9 Master 02 Fig. 37: Slave 11 Slave 12 Master-slave connection (example) For further connection examples, see “4.6.1 Bus connection (only in conjunction with several units with an e-Comfort controller)”, page 13. For details of how to set the identifier, see “6.2.5 Editable parameters”, page 25 or “6.2.6 Programming overview”, page 26, parameter “Ad”. 6.2.9 Evaluating system messages In the e-Comfort controller, system messages are indicated by a number in the display. Following the appearance of messages A03, A06 and A07 and after rectifying their cause, you will need to reset the e-Comfort controller (see “6.2.10 Resetting the e-Comfort controller”, page 30). Rittal cooling unit assembly and operating instructions 6 Operation Display screen System message Possible cause Measures to rectify the fault A01 Enclosure door open Door open or door limit switch incorrectly positioned Close door, position door limit switch correctly, check connection if necessary A02 Internal temperature of enclosure too high Cooling capacity inadequate/unit undersized. Check cooling capacity Error as a consequence of messages A03 to A17. A03 Filter monitoring Filter mat soiled Clean or replace; reset the e-Comfort controller A04 Ambient temperature too high/too low Ambient temperature outside of admissible operating range (+10°C to +60°C) Raise or lower the ambient temperature (e.g. heat or ventilate the room) A05 Icing hazard Operational display in case of icing hazard. Set the enclosure interior temperature to Evaporator coil fan may be mechanically a higher value. Check the evaporator fan; blocked, defective, or cold air outlet release or exchange if necessary. obstructed. A06 PSAH pressure-operated switch Ambient temperature too high Lower the ambient temperature; reset the e-Comfort controller Condenser soiled Clean the condenser; reset the e-Comfort controller Filter mat soiled Clean or replace; reset the e-Comfort controller Condenser fan defective Replace; reset the e-Comfort controller E-valve defective Have the sensor repaired by a refrigeration engineer; reset the e-Comfort controller PSAH pressure-operated switch defective Have the switch replaced by a refrigeration engineer; reset the e-Comfort controller A07 Evaporator coil Lack of coolant; sensor in front of or behind condenser defective. Have the sensor repaired by a refrigeration engineer; reset the e-Comfort controller A08 Condensate warning Condensate discharge kinked or blocked Check condensate discharge; repair any kinks or blockages in the hose as necessary Only in units with optional condensate evaporation Check the evaporation unit, exchange if necessary Clear the blockage; replace if necessary A09 Condenser fan Blocked or defective A10 Evaporator fan Blocked or defective Clear the blockage; replace if necessary A11 Compressor Compressor overloaded (internal winding protection) No action required; unit switches back on automatically. Defective Exchange by refrigeration engineer (check by measuring the winding resistance) A12 Condenser temperature sensor Open or short-circuit Replace A13 Ambient temperature sensor Open or short-circuit Replace A14 Icing temperature sensor Open or short-circuit Replace A15 Condensate warning temperature sensor Open or short-circuit Replace A16 Internal temperature sensor Open or short-circuit Replace A17 Phase monitoring For three-phase devices only: Incorrect rotary field/phase absent Exchange two phases A18 EPROM error New board obstructed Software update needed (only following board installation with more recent software): Enter the programming level with Code 22; press button 1 and confirm with “Set” until “Acc” appears. Next, disconnect the unit from the mains and reconnect. A19 LAN/Master-Slave Master and slave not connected Check setting and/or cable A20 Voltage drop Error display not shown Event is stored in the log file E0 Display message Connection problem between the display and the controller board Reset: Switch power supply off, then switch on again after approx. 2 sec. Cable defective; connection loose Exchange the boards OL Overload Ambient parameters or heat loss outside of the applicable limits b07 Cooling circuit leak Sensor B3 and B4 mixed up rSt Reset Manual device reset required, see “6.2.10 Resetting the e-Comfort controller”, page 30. Correct sensor position Tab. 6: Troubleshooting with the e-Comfort controller Rittal cooling unit assembly and operating instructions 29 EN 7 Inspection and maintenance EN 6.2.10 Resetting the e-Comfort controller After the occurrence of faults A03, A06 and A07, you will need to reset the e-Comfort controller. • Press buttons 1 (▲) and 3 (▼) (Fig. 34) simultaneously for 5 sec. The system messages will disappear and the temperature display will be shown. 7 7.1.1 Compressed air cleaning SK 3304.xxx, SK 3305.xxx Inspection and maintenance Risk of electric shock! The unit is live. Switch off the power supply before opening, and take suitable precautions against it being accidentally switched back on. Fig. 38: Disconnect the power cord Fig. 39: Remove the upper louvred grille 7.1 General The cooling circuit is designed in the form of a maintenance-free, hermetically sealed system. The cooling unit is filled with the required quantity of refrigerant at the factory, checked for leaks, and subjected to a functional test run. The installed maintenance-free fans are mounted on ball bearings, protected against moisture and dust, and fitted with a temperature monitor. The life expectancy is at least 30,000 operating hours. The cooling unit is thus largely maintenance-free. All that may be required from time to time is to clean the components of the external air circuit using a vacuum cleaner or compressed air if they become visibly dirty. Any stubborn, oily stains may be removed using a nonflammable detergent, such as degreaser. Maintenance interval: 2000 operating hours. Depending on the level of contamination in the ambient air, the maintenance interval may be reduced to suit the air pollution intensity. Caution! Risk of fire! Never use flammabel liquids for cleaning. Sequence of maintenance measures: – Check the level of dirt. – Filter soiling? Replace the filter if necessary. – Cooling membranes soiled? Clean if necessary. – Activate test mode; cooling function OK? – Check noise generation of compressor and fans. 30 Rittal cooling unit assembly and operating instructions 7 Inspection and maintenance EN Fig. 40: Fig. 41: Remove the lower louvred grille Fig. 42: Disconnect the connector from the display (1) Fig. 43: Disconnect the connector from the display (2) Remove the infill panel Rittal cooling unit assembly and operating instructions 31 7 Inspection and maintenance EN Fig. 47: Disconnect the fan connectors Fig. 44: Cooling unit without grille Fig. 48: Dismantle cover (loosen 4 nuts) Fig. 45: Remove the external circuit fan (loosen the four screws) Fig. 49: Push back the display cable Fig. 46: Remove the fan Fig. 50: Push the display cable through the cable gland 32 Rittal cooling unit assembly and operating instructions 7 Inspection and maintenance EN Fig. 51: Fig. 52: Fig. 53: Loosen the earthing cable between the cover and the chassis (1) Fig. 54: Loosen the earthing cable between the cover and the chassis (2) Fig. 55: Clean out the heat exchanger coil and compressor chamber using compressed air (1) Remove the cover (1) Remove the cover (2) Rittal cooling unit assembly and operating instructions 33 7 Inspection and maintenance EN Fig. 56: Clean out the heat exchanger coil and compressor chamber using compressed air (2) Fig. 58: Remove the upper louvred grille (1) Fig. 59: Remove the upper louvred grille (2) 7.1.2 Compressed air cleaning SK 3328.xxx, SK 3329.xxx, SK 3332.xxx Fig. 57: 34 Disconnect the power cord Rittal cooling unit assembly and operating instructions 7 Inspection and maintenance EN Fig. 60: Remove the upper louvred grille (3) Fig. 62: Remove the lower louvred grille (2) Fig. 61: Remove the lower louvred grille (1) Fig. 63: Remove the infill panel Rittal cooling unit assembly and operating instructions 35 7 Inspection and maintenance EN Fig. 64: Disconnect the display cable Fig. 68: Remove the external circuit fan Fig. 65: Push back the display cable and press it through the cable gland (1) Fig. 69: Disconnect the fan connectors (1) Fig. 66: Push back the display cable and press it through the cable gland (2) Fig. 70: Disconnect the fan connectors (2) Fig. 67: Loosen the four screws of the external circuit fan Fig. 71: Disconnect the fan connectors (3) 36 Rittal cooling unit assembly and operating instructions 7 Inspection and maintenance EN Fig. 72: Disconnect the fan earthing cable (1) Fig. 73: Disconnect the fan earthing cable (2) Fig. 75: Remove the cover Fig. 74: Loosen the four nuts of the cover Fig. 76: Disconnect the earthing cable (1) Rittal cooling unit assembly and operating instructions 37 7 Inspection and maintenance EN Fig. 77: Disconnect the earthing cable (2) Fig. 79: Clean out the heat exchanger coil and compressor chamber using compressed air (2) Fig. 78: Clean out the heat exchanger coil and compressor chamber using compressed air (1) Fig. 80: Clean out the heat exchanger coil and compressor chamber using compressed air (3) 38 Rittal cooling unit assembly and operating instructions 8 Storage and disposal 8 Storage and disposal 9 Technical specifications EN Caution! Risk of damage! The cooling unit must not be subjected to temperatures above +70°C during storage. During storage, the cooling unit must stand upright. The closed cooling circuit contains refrigerant and oil which must be properly disposed of for the sake of the environment. Disposal can be performed at the Rittal plant. Please contact us for advice. Fig. 81: Rating plate (technical specifications) – Observe the mains connection data (voltage and frequency) as per the rating plate. – Observe the pre-fuse as per the specifications on the rating plate. Rittal cooling unit assembly and operating instructions 39 9 Technical specifications EN Unit Model No. SK Basic controller, RAL 7035 – 3302.100 3302.110 3302.300 3302.310 – – – – Basic controller, stainless steel – 3302.200 3302.210 – – – – – – e-Comfort controller, RAL 7035 – – – – – 3303.500 3303.510 3304.500 3304.510 e-Comfort controller, NEMA 4X – – – – – 3303.504 3303.514 3304.504 3304.514 e-Comfort controller, stainless steel cover – – – – – 3303.600 3303.610 3304.600 3304.610 Rated voltage V Hz 230, 1~, 50/60 115, 1~, 60 230, 1~, 50/60 115, 1~, 60 230, 1~, 50/60 115, 1~, 60 230, 1~, 50/60 115, 1~, 50/60 Rated current A 1.6/1.7 3.3 1.6/1.7 4.0 2.6/2.6 5.7 3.9/4.3 8.0/8.8 Start-up current A 3.0/3.4 8.0 4.3/5.3 12.0 5.1/6.4 11.5 12.0/14.0 26.0/28.0 Pre-fuse T A 10.0 10.0 10.0 10.0 10.0 10.0 10.0 11.0 – 16.0 Motor circuit-breaker – – – – – – – – – Transformer circuit-breaker – – – – – – – – 䡲 Miniature circuit breaker or fuse gG (T) – 䡲 䡲 䡲 䡲 䡲 䡲 䡲 – . Useful cooling output Qk to DIN 3168 L 35 L 35 L 35 L 50 W W 300/320 150/170 300 150 300/320 150/160 300 150 500/610 280/350 500 280 1000/1450 1050/1100 1000/1450 980/1050 Power consumption Pel to DIN 3168 L 35 L 35 L 35 L 50 W W 245/255 255/275 290 340 285/300 320/340 290 340 360/380 420/390 470 500 640/720 750/850 670/750 780/880 1.2 1.2 1.1 1.1 1.4 1.4 1.6 1.6 R134a 100 R134a 100 R134a 100 R134a 95 R134a 170 R134a 170 R134a 325 R134a 325 25 25 25 25 28 28 25 25 . Refrigeration factor H = Qk/Pel Refrigerant – Type – Filling – g Admissible pressure bar Temperature setting range °C +20 to +55 +20 to +55 +20 to +55 +20 to +55 +20 to +55 +20 to +55 +20 to +55 +20 to +55 Setting range °C +30 to +55 +30 to +55 +30 to +55 +30 to +55 +20 to +55 +20 to +55 +20 to +55 +20 to +55 < 61 < 61 < 61 < 61 < 61 < 64 < 64 Noise level dB (A) < 61 Protection category to EN 60 529 – Internal circuit – External circuit – – IP 54 IP 34 Protection category – (NEMA 4X)1) Dimensions (W x H x D) mm 280 x 550 x 140 525 x 340 x 153 280 x 550 x 206 (285 x 620 x 298)1) 400 x 950 x 260 (405 x 1020 x 358)1) Weight kg 13 13 17 (25)1) 39 (49)1) 1) Information 40 13 17 17 (25)1) 44 (54)1) relevant for NEMA 4X Rittal cooling unit assembly and operating instructions 9 Technical specifications Unit Model No. SK e-Comfort controller, RAL 7035 – 3304.540 3305.500 3305.510 3305.540 3328.500 3328.510 3328.540 3329.500 e-Comfort controller, NEMA 4X – 3304.544 3305.504 3305.514 3305.544 3328.504 3328.514 3328.544 3329.504 e-Comfort controller, stainless steel cover – 3304.640 3305.600 3305.610 3305.640 3328.600 3328.610 3328.640 3329.600 400, 3~, 50/ 230, 1~, 460, 3~, 60 50/60 115, 1~, 50/60 400, 3~, 50/ 230, 1~, 460, 3~, 60 50/60 115, 1~, 50/60 400, 3~, 50/ 230, 1~, 460, 3~, 60 50/60 EN Rated voltage V, Hz Rated current A 2.2/2.1 5.5/5.8 11.5/12.5 2.5/2.8 6.1/6.6 13.4/14.8 2.8/3.3 8.2/9.3 Start-up current A 11.5/12.7 22.0/24.0 26.0/28.0 12.2/11.3 20.0/22.0 40.0/38.0 6.8/7.8 20.0/24.0 Pre-fuse T A 6.3 – 10.0 16.0 14.0 – 20.0 6.3 – 10.0 16.0 18.0 – 25.0 6.3 – 10.0 16.0 Motor circuit-breaker – 䡲 – – 䡲 – – 䡲 – Transformer circuit-breaker – – – 䡲 – – 䡲 – – Miniature circuit breaker or fuse gG (T) – – 䡲 – – 䡲 – – 䡲 Useful cooling output Qk L 35 L 35 to DIN 3168 L 35 L 50 W W 1000/1460 880/990 1500/1510 1150/1200 1500/1660 1150/1270 1500/1510 1230/1250 2000/2360 1620/1745 2000/2360 1620/1745 2000/2350 1450/1690 2500/2660 1840/1920 L 35 L 35 L 35 L 50 W W 670/820 760/930 870/980 1030/1150 1010/900 1180/1060 820/1000 980/1170 935/1055 1080/1250 965/1085 1110/1280 920/1145 1145/1395 1270/1410 1470/1700 1.7 1.7 1.5 1.8 2.1 2.1 2.2 2.0 R134a 325 R134a 600 R134a 600 R134a 600 R134a 950 R134a 950 R134a 950 R134a 950 28 28 28 < 64 < 64 . Power consumption Pel to DIN 3168 . Refrigeration factor H = Qk/Pel Refrigerant – Type – Filling – g Admissible pressure bar 25 25 25 25 28 Temperature setting range °C +20 to +55 +20 to +53 +20 to +53 +20 to +55 +20 to +55 (+20 to +50)1) °C +20 to +55 Setting range Noise level dB (A) < 64 Protection category to EN 60 529 – Internal circuit – External circuit – – IP 54 IP 34 Protection category – (NEMA 4X)1) Dimensions (W x H x D) Weight 1) Information mm kg +20 to +50 +20 to +50 +20 to +55 +20 to +55 (+20 to +50)1) < 64 < 64 < 64 < 64 400 x 950 x 260 (405 x 1020 x 358)1) 40 (50)1) 41 (51)1) 46 (56)1) < 64 400 x 1580 x 295 (405 x 1650 x 388)1) 42 (52)1) 66 (80)1) 73 (87)1) 67 (80)1) 69 (83)1) relevant for NEMA 4X Rittal cooling unit assembly and operating instructions 41 9 Technical specifications Model No. SK Unit EN e-Comfort controller, RAL 7035 – 3329.510 3329.540 3332.540 3361.500 3361.510 e-Comfort controller, NEMA 4X – 3329.514 3329.544 – – – – e-Comfort controller, stainless steel cover – 3329.610 3329.640 3332.640 3361.600 3361.610 3361.640 Rated voltage V, Hz 115, 1~, 50/60 400, 3~, 50/ 460, 3~, 60 400, 3~, 50/ 460, 3~, 60 230, 1~, 50/60 115, 1~, 60 400, 2~, 50/60 Rated current A 17.0/20.0 3.7/3.8 4.2/4.2 2.7/2.7 5.3 1.2/1.4 Start-up current A 44.0/42.0 6.8/7.6 9.2/11.0 6.0/9.6 12.0 3.1/3.3 Pre-fuse T A 18.0 – 25.0 6.3 – 10.0 6.3 – 10.0 10.0 10.0 6.3 – 10.0 Motor circuit-breaker – – 䡲 䡲 – – – Transformer circuit-breaker – 䡲 – – – – 䡲 Miniature circuit breaker or fuse gG (T) – – – – 䡲 䡲 – . 3361.540 Useful cooling output Qk to DIN 3168 L 35 L 35 L 35 L 50 W W 255/2660 1840/1920 2500/2700 1900/1950 4000/4400 3070/3570 750/790 570/570 750 500 750/790 570/570 Power consumption Pel to DIN 3168 L 35 L 35 L 35 L 50 W W 1300/1440 1500/1730 1295/1495 1545/1845 1720/2120 1990/2460 420/450 480/510 570 670 420/450 480/510 1.9 1.9 2.3 1.8 1.3 1.7 R134a 950 R134a 950 R134a 3000 R134a 280 R134a 260 R134a 280 28 28 28 . Refrigeration factor H = Qk/Pel Refrigerant – Type – Filling – g Admissible pressure bar 28 Temperature setting range °C +20 to +55 (+20 to +50)1) Setting range °C +20 to +55 (+20 to +50)1) Noise level dB (A) < 64 Protection category to EN 60 529 – Internal circuit – External circuit – – IP 54 IP 34 Protection category – (NEMA 4X)1) Dimensions (W x H x D) mm Weight 1) Information kg < 64 400 x 1580 x 295 (405 x 1650 x 388)1) 76 (90)1) 70 < 64 < 64 28 28 +20 to +52 +20 to +55 +20 to +52 +20 to +55 < 64 < 64 500 x 1580 x 340 280 x 550 x 206 (83)1) 91 22 22 Model No. SK Unit e-Comfort controller, RAL 7035 – 3366.500 3366.510 3366.540 e-Comfort controller, stainless steel cover – 3366.600 3366.610 3366.640 V, Hz 230, 1~, 50/60 115, 1~, 50/60 400, 3~, 50/ 460, 3~, 60 2.7/2.9 Rated voltage Rated current A 6.7/6.9 13.6/13.8 Start-up current A 22.0/24.0 43.0/47.0 8.0/8.8 Pre-fuse T A 10.0 14.0 – 20.0 6.3 – 10.0 Motor circuit-breaker – – – 䡲 Transformer circuit-breaker – – 䡲 – – 䡲 – – Useful cooling output Qk to DIN 3168 L 35 L 35 L 35 L 50 W W 1500/1500 1050/1100 1500/1500 1050/1100 1500/1500 980/1080 Power consumption Pel to DIN 3168 L 35 L 35 L 35 L 50 W W 940/1070 1115/1230 940/1070 1115/1230 970/1120 1140/1310 1.6 1.6 1.5 R134a 700 R134a 700 R134a 700 Miniature circuit breaker or fuse gG (T) . . Refrigeration factor H = Qk/Pel Refrigerant – Type – Filling – g Admissible pressure bar 28 28 28 Temperature setting range °C +20 to +55 +20 to +55 +20 to +55 Setting range °C +20 to +55 +20 to +55 +20 to +55 72 72 72 49 46 Noise level Protection category to EN 60 529 – Internal circuit – External circuit dB (A) – – IP 54 IP 34 Dimensions (W x H x D) mm 450 x 1590 x 195 Weight kg 45 42 22 relevant for NEMA 4X Rittal cooling unit assembly and operating instructions 10 List of spare parts 10 List of spare parts EN 75 SK 3302.xxx 40 10 71 25 45 1 100 55 71 90 15 5 Fig. 82: Spare parts for SK 3302.xxx SK 3302.3xx 10 90 71 20 71 25 100 45 40 1 5 15 55 Fig. 83: Spare parts for SK 3302.3xx Rittal cooling unit assembly and operating instructions 43 10 List of spare parts EN SK 3303.xxx SK 3361.xxx 10 40 71 30 75 25 1 45 15 55 100 90 5 71 71 20 71 Fig. 84: Spare parts for SK 3303.xxx, SK 3361.xxx SK 3304.xxx SK 3305.xxx 10 40 71 30 102 75 1 45 25 100 71 50 80 15 20 55 90 45 5 71 71 101 Fig. 85: 44 Spare parts for SK 3304.xxx, SK 3305.xxx Rittal cooling unit assembly and operating instructions 10 List of spare parts 75 SK 3328.xxx SK 3329.xxx EN 10 40 46 71 30 102 45 71 20 50 1 55 100 45 46 90 80 5 71 71 15 101 Fig. 86: Spare parts for SK 3328.xxx, SK 3329.xxx 75 SK 3332.xxx 10 46 40 71 102 45 25 100 50 55 1 45 71 90 46 71 71 20 15 5 30 101 Fig. 87: Spare parts for SK 3332.xxx Rittal cooling unit assembly and operating instructions 45 10 List of spare parts EN SK 3366.xxx 75 75 100 40 46 10 71 102 45 20 90 50 30 71 55 1 25 45 101 46 5 80 15 Fig. 88: Spare parts for SK 3366.xxx, SK 3377.xxx Legend 1 Compressor 5 Condenser fan 10 Evaporator fan 15 Dispatch bag 20 Expansion valve 25 Filter dryer 30 PSAH pressure-operated switch 40 Controller board 45 Louvred grille 1 46 Louvred grille 2 50 Infill panel 55 Display 71 Temperature sensor 75 Enclosure tray 80 Transformer 90 Evaporator coil 100 Condenser 101 Condensate evaporator 102 Miniature fuse, condensate evaporator (T4A; 6.3 x 32 mm) 46 Note: As well as the spare part number, when ordering spare parts the following information must be provided: – Unit model – Fabrication number – Date of manufacture This information may be found on the rating plate. Rittal cooling unit assembly and operating instructions 11 Appendix: Cut-out and hole sizes 11 Appendix: Cut-out and hole sizes 353 11.1 Dimensions for external mounting EN 55 340 260 78.5 354 326 251 360 280 140 85.5 Fig. 92: 49 Ø8 155 (10x) 260 354 165.5 501 550 353 360 354 354 SK 3366.xxx, SK 3377.xxx external mounting 250 350 260 280 32.5 SK 3302.xxx external mounting (except SK 3302.3xx) 255 400 Fig. 89: 525 6 385 350 281 340 950 Ø 9.5 (8x) 255 153 471 25 15 350 Fig. 93: Fig. 90: SK 3304.xxx, SK 3305.xxx external mounting SK 3302.3xx external mounting 35 400 280 295 262 350 380 206 310 15.5 280 1580 550 532 480 550 266 Ø 13 (10x) 25 275 SK 3303.xxx, SK 3361.xxx external mounting 340 Fig. 91: 320 325 260 Ø 8 (4x) Fig. 94: Rittal cooling unit assembly and operating instructions SK 3328.xxx, SK 3329.xxx external mounting 47 11 Appendix: Cut-out and hole sizes 400 500 370 340 380 145 440 380 320 150 R9.5 (2x) 1580 500 330 45 EN 1580 1540 1558 1554 25 Fig. 95: 376 275 375 440 360 164 Ø 13 (10x) Ø 13 (4x) SK 3332.xxx external mounting R9.5 (2x) 11.2 Dimensions for partial internal mounting 320 Fig. 98: SK 3328.xxx, SK 3329.xxx partial internal mounting 280 100 20 254 106 500 25 145 195 550 497 266 523 524 362 18 x 45 1580 474 1530 1550 Ø 8 (4x) (230) Fig. 96: SK 3303.xxx, SK 3361.xxx partial internal mounting Ø 13 (4x) 400 370 105 330 155 Fig. 99: 380 SK 3332.xxx partial internal mounting 920 920 950 25 x 45 Ø 9.5 (4x) Fig. 97: 48 SK 3304.xxx, SK 3305.xxx partial internal mounting Rittal cooling unit assembly and operating instructions 11 Appendix: Cut-out and hole sizes 11.3 Dimensions for full internal mounting 98 280 210 370 25 R6 (4x) 25 200 EN 400 42 254 25 x 45 2 50 920 950 920 550 266 518 492 524 Ø 15 (2x) 380 Ø 8 (4x) 18 x 45° Ø 9.5 (4x) (230) Fig. 100: SK 3302.1xx full internal mounting 98 55 Fig. 103: SK 3304.xxx, SK 3305.xxx full internal mounting 525 510 400 370 245 50 R9.5 (2x) 325 20 x 45 314 340 320 Ø 7.5 (4x) Fig. 101: SK 3302.3xx full internal mounting 376 1580 1540 1558 1554 499 42 280 164 25 254 200 Ø 13 (4x) Ø 19 (2x) R9.5 (2x) 550 518 492 524 320 266 Fig. 104: SK 3328.xxx, SK 3329.xxx full internal mounting 18 x 45° 45 Ø 8 (4x) 400 5 R9 200 (230) 1500 45 1510 Fig. 102: SK 3303.xxx, SK 3361.xxx full internal mounting Fig. 105: Rittal cooling unit assembly and operating instructions SK 3366.xxx, SK 3377.xxx full internal mounting 49 䡲 䡲 䡲 䡲 1st edition 07.2011 / ID no. 328 124 / Drawing no. A4491200SK23 䡲 Enclosures Power Distribution Climate Control IT Infrastructure Software & Services RITTAL GmbH & Co. KG Postfach 1662 䡠 D-35726 Herborn Phone +49(0)2772 505-0 䡠 Fax +49(0)2772 505-2319 E-mail: info@rittal.de 䡠 www.rittal.com
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