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Translation from original instructions

Fig. 12 Recommended hydraulic circuit

Evaporator

Water filter

Thermometer

Motor-driven pump

Flow switch

Flexible coupling

System filling unit

Water pressure gauge

Valve

Safety valve

Storage tank

Air valve

Expansion vessel

Check valve

It is essential for the water to come in at the connection indicated in the dimensional diagram and with the

relevant plate on the unit.

If it does not, there would be a risk of the evaporator being frozen since the antifreeze probe control would be thwarted.
The hydraulic circuit must be made in such a way as to ensure a constant flow of water to the exchanger in all operating

conditions.
If this is not done, there will be a risk of refrigerant returning to the liquid state at the compressor inlet, with the danger of it

breaking.
Operation with a variable water flow rate at the user-side exchanger is allowed only if the inverter pump is integrated in the

unit (and therefore supplied by the manufacturer) and if the hydraulic circuit is made in accordance with the manufacturer's

specific instructions.

Содержание Zeta Rev

Страница 1: ...Zeta Rev EN 26 10 2016 Installation use and maintenance manual...

Страница 2: ...Safety Directive The quality level is constantly monitored and therefore our products are synonymous with Safety Quality and Reliability Changes considered necessary for product improvement may be mad...

Страница 3: ...ater to the evaporator at low temperature 14 2 2 7 Operation with water to the condenser at low temperature 14 2 2 8 Condensate drain only for heat pump units 15 2 2 9 Hydraulic connection to the heat...

Страница 4: ...ed at a lower level than the remote exchanger 38 5 7 Expansion valve 38 5 8 Vacuum and refrigerant charge 39 5 9 Topping up with oil 40 6 Commissioning 41 6 1 Preliminary operations 41 6 1 1 Checking...

Страница 5: ...tion from original instructions 7 2 3 Cleaning e coated microchannel coils 54 7 3 Internal cleaning 56 7 3 1 Cleaning the unit 56 7 3 2 Cleaning the plate heat exchangers 57 7 4 Periodic checks 58 7 5...

Страница 6: ...ves 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 i...

Страница 7: ...wn 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...

Страница 8: ...Commission Re gulation EC No 517 2014 The internal danger zone can be accessed by removing the protective devices and entering the unit On no account must unqualified personnel be allowed to enter the...

Страница 9: ...lations provided for by law and must therefore be disposed of as indicated above Particular care should be taken during maintenance operations in order to reduce refrigerant leaks as much as possible...

Страница 10: ...immediate vicinity be careful to avoid touching any components of the unit without suitable protection do not work in the discharge trajectory of the safety valves if the units are positioned in unpro...

Страница 11: ...f Langelier index 0 4 0 4 pH 7 5 8 5 Electrical conductivity 10 500 S cm Organic elements Hydrogen carbonate HCO3 70 300 ppm Sulphates SO42 50 ppm Hydrogen carbonate Sulphates HCO3 SO42 1 Chlorides C...

Страница 12: ...f the defrost cycle The following experimental formula allows the minimum cold side and hot side water volume of the system to be calculated where v Minimum water content of the system l tot Total ref...

Страница 13: ...he pipe away from filters valves etc with a distance of at least 5 times the diameter of the pipe both upstream and downstream The arrow on the switch must be aligned with the water flow The flow swit...

Страница 14: ...3 56 Propylene glycol 15 25 33 39 44 48 51 54 57 If ambient temperatures are expected to be lower than the freezing point of water it is essential to use an ti freeze mixtures in the above mentioned p...

Страница 15: ...ncy in a short time and makes it unserviceable All units equipped with heat recuperator have water temperature control probe on the return from the system The microprocessor control enables recovery w...

Страница 16: ...livery side of the compressors and refrigerant gas always passes through it The part of the heat that is not recovered by the desuperheater is rejected in the condenser that always remains active To p...

Страница 17: ...e unit The change from the OFF state to the ON state and vice versa of the unit can be carried out remotely or through the display without having to enter areas at risk Access restriction is part of c...

Страница 18: ...nsequences If accidentally released rapid evaporation of the liquid can cause freezing In case of contact with the liquid defrost the various part with water remove clothing carefully rinse thoroughly...

Страница 19: ...he responsibility of the consignee and must be carried out in compliance with the regu lations in force in the country in which it is carried out 3 2 Transport The unit is sent from the factory using...

Страница 20: ...uring unloading and positioning of the unit great care must be taken to prevent sudden or violent manoeuvres and the components of the unit must not be used as lifting points Make sure the machinery a...

Страница 21: ...es to prevent the slings from coming into contact with the unit If the unit is shipped in rigid packaging this precaution is not necessary Fig 6 Lifting with crane If anti vibration mounts are install...

Страница 22: ...ents if the unit has to be stored temporarily before installation Since these units are intended for outdoor installation they withstand normal atmospheric conditions without problem The unit must be...

Страница 23: ...de the operating limits stated in the Technical Booklet will cause the unit to stop 4 2 Unintended use The unit must not be used in an explosive atmosphere in a flammable atmosphere in extremely dusty...

Страница 24: ...at lower temperature to a fluid at higher temperature which is the op posite of what happens naturally In our specific case these units consist of one or more refrigerant circuits that cool the water...

Страница 25: ...tal input opened When Stby is show on the display to switch on the unit in cooling mode you must press button or in units that also work in heating mode press button To switch off the unit from the ke...

Страница 26: ...e button for units in cooling only mode or with the third press for units in heat pump mode the lower display will show Setr that corresponds to the real operating set point and its upper part will sh...

Страница 27: ...nd finally press for more than 2 seconds the button that will become for operation in heating mode Press the button again on the main screen to restart the unit 4 7 2 3 Changing from heating to coolin...

Страница 28: ...radiation Keep the condensing coil out of direct sunlight as far as possible direction of prevailing winds Do not position the unit in a such way that prevailing winds can cause air recirculation at...

Страница 29: ...isolation is required it is advisable to use the anti vibration mounts that are available as accessories In the event of installation on roofs or intermediate floors the unit and pipes must be isolat...

Страница 30: ...which there is a screw for fixing it to the base of the unit The anti vibration mount is fixed to the base through the two holes on the flange The flange of the anti vibration mount bears a number 45...

Страница 31: ...f the unit does not affect its correct installation or its correct operation That is why it is necessary to avoid restricting the service spaces and installing covers that create recirculation between...

Страница 32: ...n the exchanger inlet pipe to protect the exchanger from slag or impurities in the pipes Air valves to be placed in the highest parts of the hydraulic circuit to allow the non condensable gases to be...

Страница 33: ...levant plate on the unit If it does not there would be a risk of the evaporator being frozen since the antifreeze probe control would be thwarted The hydraulic circuit must be made in such a way as to...

Страница 34: ...number of phases frequency stated on the plate on the unit the standard power supply voltage see specific wiring diagram must not fluctuate by more than 10 and the unba lance between phases must alway...

Страница 35: ...raight as possible making sure the following basic rules are complied with use the fewest number of bends possible preferably as wide as possible make a slight slope in the suction line 1 in the horiz...

Страница 36: ...14 4 35 22 35 22 35 22 16 4 35 28 35 28 42 28 18 4 42 28 42 28 42 28 20 4 42 28 42 28 42 28 24 4 42 28 42 28 42 28 The above mentioned diameters were chosen in order to optimise the performance of th...

Страница 37: ...the compressor when the unit is not running In the horizontal sections of the suction line G it is advisable to have a slope of at least 1 to facilitate oil return to the compressor 5 6 4 LE HP versio...

Страница 38: ...hons on the vertical sections of the suction delivery line G to facilitate oil return to the compressor The height h must be less than 4 metres The horizontal sections of the suction delivery line G m...

Страница 39: ...g in liquid form The tables below show the estimated refrigerant charges for the units and for the connecting pipes to which will be added the charge contained in the remote exchanger As an indication...

Страница 40: ...can at most be 10 of the total oil charge present in the refrigerant circuit of the unit The amount of oil put in the refrigerant circuit at the factory is shown in the technical booklet for the unit...

Страница 41: ...essary the presence of oil stains may be a sign of refrigerant leaks Be careful with the electrical checks and use only suitable tools Position the master switch of the unit to ON and check on the dis...

Страница 42: ...of use and the installation level of the unit m If the calibration value obtained from the calculation is lower than the pre charge value stated on the label keep the existing pre charge value The max...

Страница 43: ...xchanger require further investigation check the correct connection of the environment control to the terminals as in the wiring diagram make sure there is an air flow control switch in the remote exc...

Страница 44: ...f there is a water leak on first start up it could be a problem with bedding in of the mechanical seal We therefore advise pressurizing the pump body 2 or 3 times by closing and opening the delivery v...

Страница 45: ...eypad 6 2 4 Adjustment for constant water flow rate Flowzer VP If the constant water flow rate to the system is to be adjusted through adjustment of the speed of the pump present in the unit the inver...

Страница 46: ...the free cooling active 7 press Menu go to Parameters using the arrow buttons and confirm with Select 8 in the Parameters menu select Complete List using the arrow buttons and confirm with Select 9 u...

Страница 47: ...the system make sure that with the highest number of users closed the water flow rate is in any case above the lowest valued allowed for the unit Do not set the water flow rate outside the operating l...

Страница 48: ...after the unit has been started the safety devices must be checked only the high and low pressure switches The checks must be carried out as described in the Periodic checks chapter The calibration v...

Страница 49: ...f water through the unit In this case it is necessary to check for closed or partially closed shut off devices in the hydraulic circuit and check the characteristics of the pumps and that they are wor...

Страница 50: ...s switched off from the di splay and the display is disconnected or not working Restore the connection of the display or replace it The unit does not start the display is off the control is powered co...

Страница 51: ...it If in the previous conditions the circulation pump is not managed by the control the pump must always be kept running When the temporary stop is carried out in this way all that needs to be done t...

Страница 52: ...nutes before working on the electrical parts of the unit Circuits supplied from external sources made with orange cable can remain live even after the power sup ply to the unit has been turned off Wor...

Страница 53: ...in coastal or industrial areas or in areas where there are aggressive chemicals in the air periodic rinsing with clean water is considerably beneficial and helps counter corrosive effects Never clean...

Страница 54: ...er finishing cleaning Excessive water pressure can bend the fins with a consequent increase in aeraulic head losses on the exchanger and lowering of the performance of the unit or worse it can cause t...

Страница 55: ...t is recommended for removing chlorides Product Dealer CHLOR RID DTS CHLOR RID International Inc PO Box 908 Chandler Arizona 85244 Bus 800 422 3217 Bus Fax 480 821 0364 This product is not intended fo...

Страница 56: ...the unit always clean the electrical control panel of any work remnants and extraneous components Restore the safety devices and protective devices that had to be removed in order to carry out the wo...

Страница 57: ...e equipment in accordance with the instructions in the safety data sheets for the chemical products used Also all technical and organisational measures for waste water treatment must be applied in acc...

Страница 58: ...e instructions in the section entitled Recommendations for car rying out maintenance and cleaning of finned coils according to the type of coil installed Monthly If the unit also has metal filters cle...

Страница 59: ...store the charge of refrigerant gas In the case of small oil leaks clean the dirty parts with absorbent cloths otherwise recover the leaked oil with absorbent sheets In any case the material used must...

Страница 60: ...ment and obliges owners to recover and return them to the dealer or take them to special collection centres at the end of their ope rational life The refrigerant gas present in the unit is included am...

Страница 61: ...61 We reserve the right to make changes without any prior notice Translation from original instructions Page intentionally blank...

Страница 62: ...62 We reserve the right to make changes without any prior notice Translation from original instructions Page intentionally blank...

Страница 63: ...63 We reserve the right to make changes without any prior notice Translation from original instructions Page intentionally blank...

Страница 64: ...Group S r l Via Valletta 5 30010 Cantarana di Cona VE Italy T 39 0426 921111 F 39 0426 302222 www blueboxcooling com info swegon it Blue Box Group S r l a socio unico P IVA 02481290282 Company directe...

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