HIdRos WZA 06 Page 1 Technical Manual Download

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TECHNICAL MANUAL

GROUND SOURCE WATER TO WATER HEAT PUMPS

WZA

SERIES

MTEC.3810.GB-C-1

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Rev. C 09-2020

Summary of Contents for WZA 06

Page 1: ...QGHUWDNLQJ DQ ZRUN RQ the unit RETAIN FOR FUTURE REFERENCE QFRUSRUDWHG LQ WKLV GRFXPHQW DUH WKH IROORZLQJ HFODUDWLRQ RI FRQIRUPLW 7HFKQLFDO PDQXDO TECHNICAL MANUAL GROUND SOURCE WATER TO WATER HEAT PUMPS WZA SERIES MTEC 3810 GB C 1 2SHUDWLRQ DQG PDLQWHQDQFH PDQXDO VHULHV QJOLVK Rev C 09 2020 ...

Page 2: ...greenhouse gases Reproduction data storage and transmission even partial of this publication in any form without the prior written authorisation of the company is prohibited The company can be contacted for all inquiries regarding the use of its products The company follows a policy of continuous product development and improvement and reserves the right to modify speciﬁcations equipment and instr...

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Page 4: ...s available 3 3 Description of accessories 3 4 Technical data 3 5 Use limits 3 6 Compressor partialisation steps 3 7 Correction factors 3 8 Sound data 4 Installation 4 1 General warnings and use of symbols 4 2 Health and safety of workers 4 3 Personal protection devices 4 4 Receipt and inspection 4 5 Storage 4 6 Unpacking 4 7 Lifting and handling 4 8 Positioning and minimum technical spaces 4 9 Hy...

Page 5: ...oling circuit repair 8 Decommissioning 8 1 Disconnecting the unit 8 2 Decommissioning disposal and recycling 8 3 WEEE Directive EU only 9 Diagnosis and troubleshooting 9 1 Troubleshooting 9 2 Possible anomalies and possible remedies Rev C 09 2020 MTEC 3810 GB C 1 Operation and maintenance manual serie WZA English 5 ...

Page 6: ...compliance with the legislative provisions issued by the European Union and with the technical regulations in force on the date of issuing of the instructions themselves The instructions include instructions for avoiding reasonably foreseeable improper use 1 3 KEEPING THE INSTRUCTIONS The instructions must be placed in a suitable place away from dust humidity and must be easily accessible to users...

Page 7: ...nst gas leakage from the safety valve The discharge of these valves is directed to avoid causing damage to persons or property Entire unit Bursting or exploding injuries burns poisoning due to external ﬁre Fire due to natural disasters or the combustion of elements adjacent to the unit Prepare the necessary ﬁre ﬁghting equipment and or adequate signs indicating that the unit is under pressure Enti...

Page 8: ...the machine that could cause cutting injuries upon contact GROUND CONNECTION The symbol identiﬁes the point of the machine for grounding READ AND UNDERSTAND THE INSTRUCTIONS Read and understand the machine instructions before performing any operation RECOVERABLE OR RECYCLABLE MATERIAL 1 9 LIMITS OF USE AND NON PERMITTED USES The machine has been designed and built exclusively for the uses describe...

Page 9: ...ature Peso a vuoto Weight Temperatura di progetto Design temperature CO2 Equivalente CO2 Equivalente Data di fabbricazione Manifacture date PS bar A P SSURE SIDE nza ency ONE Hz C CO2 Equ Equiva valente ente INTRODUCTION 1 10 IDENTIFICATION OF THE UNIT Each unit is equipped with an identiﬁcation plate that shows the main information of the machine The data on the plate may differ from that shown i...

Page 10: ...stances are regulated by the Montreal protocol 1992 revision and by EC regulation no 2037 200 dated 29 June 2000 IIHFWV RQ HIŏXHQW WUHDWPHQW Discharges into the atmosphere of these products do not cause long term water contamination 2 1 5 Exposure control and individual protection Use protective clothing and gloves always protect the eyes and face 2 1 6 Occupational exposure limits HFC 32 TWA 1000...

Page 11: ... and at rest Administer oxygen if necessary Give artiﬁcial respiration if breathing has stopped or shows signs of stopping If there is cardiac arrest perform external cardiac massage Request medical assistance 2 6 2 Contact with the skin In case of contact with the skin wash immediately with warm water Thaw the epidermal tissue with water Remove contaminated clothing Clothing can stick to the skin...

Page 12: ...plates and AISI 316 stainless steel They are of the single circuit type All units are equipped with a sub cooler to increase the efﬁciency of the refrigeration cycle The exchangers are insulated in the factory using closed cell material 3 1 7 Electrical panel The electrical panel is made in compliance with the European standards EN60204 Access to the electrical panel is possible by removing the fr...

Page 13: ...th in heating and in cooling operation this exchanger is sized in such a way as to completely dissipate the condensation heat of the refrigeration circuit Thanks to this component the units in version R can perform all the functions described in the previous paragraph but with some considerable advantages Firstly if the conditions exist to do this it is possible to transfer to the storage of heat ...

Page 14: ...t reduces the maximum value of the compressor starting current by varying the supply voltage of the motor through the management of a dedicated starting capacitor GEO T soft starter kit Factory installed electronic device on three phase units It reduces the maximum value of the compressor starting current through the use of an inverter which supplies the motor by varying the frequency such as to l...

Page 15: ...r units the antivibration feet are included in the group supply Soundprooﬁng kit The soundprooﬁng kit must be installed on the compressor to attenuate thenoise of the heat pump the soundproof panels are installed as standard If purchased together with the kit heat pump it is installed at the factory Soundprooﬁng kit Soft starter kit Factory installed electronic device on three phase units It reduc...

Page 16: ... 65 3 86 9 118 kW 1 28 1 52 2 11 2 81 3 74 4 26 5 66 8 63 12 9 16 8 22 0 W W 7 39 8 19 7 84 7 44 7 35 7 68 7 35 5 51 5 06 5 18 5 35 m3 h 1 63 2 14 2 85 3 59 4 73 5 62 7 16 8 18 11 2 14 9 20 2 kPa 58 50 37 30 33 33 66 45 38 46 35 kW 10 7 13 9 18 6 23 6 31 0 36 8 47 0 56 2 78 2 104 140 m3 h 1 90 2 46 3 30 4 18 5 49 6 52 8 33 9 95 13 9 18 4 24 7 kPa 51 45 54 31 34 42 41 25 57 70 53 TECHNICAL SPECIFIC...

Page 17: ...ssor type Number of compressors cooling circuits Refrigerant Global Warming Potential Refrigerant charge R version Refrigerant charge in CO2 equivalent R version Other data Electrical power supply Maximum current consumption Inrush current Dimensions l x d x h Net weight hydraulic connection diameters Sound pressure at 1m 6 Sound power according to ISO 3744 1 Performance in heating conditions acco...

Page 18: ...3 50 N 10 21 111 0 77 67 20 42 132 88 HFS 80 400 3 50 N 14 25 118 0 77 71 27 50 143 96 HFS 100 400 3 50 N 17 34 174 0 77 104 34 68 208 138 TECHNICAL SPECIFICATIONS 3 4 1 Total electrical consumption Electrical power supply V Ph Hz Maximum values Compressor Geothermal pump System pump Domestic hot water pump Total F L A maximum current consumption F L I maximum power consumption L R A inrush curren...

Page 19: ...m size 06 to 40 and 60 C from 60 to 100 Otherwise the action of the safety devices stops the unit 3 5 3 Chilled water temperature summer operation The minimum temperature permitted at the utility heat exchanger outlet is 5 C it is possible to produce water up to 5 C by adding an adequate quantity of glycol in the utility circuit For lower temperatures the unit requires structural changes In this c...

Page 20: ... factor WFCF Water ﬂow rate correction factor PDCF Pressure drop correction factor The correction factors of the water ﬂow rate and the pressure drops must be applied to the values obtained without the use of glycol The water ﬂow rate correction factor is calculated in such a way as to maintain the same temperature difference that would be obtained without the use of glycol The pressure drops corr...

Page 21: ... HFE 33 59 0 13 0 33 0 40 0 43 0 40 0 47 0 40 0 60 75 HFE 42 61 0 14 0 23 0 41 0 47 0 45 0 51 0 44 0 62 77 HFS 60 4 9 56 2 57 6 61 5 63 6 59 4 55 8 44 6 66 82 HFS 80 56 9 58 2 59 6 63 5 65 6 61 4 57 8 46 6 68 84 HFS 100 57 9 59 2 60 6 64 5 66 6 62 4 58 8 47 6 69 85 TECHNICAL SPECIFICATIONS 3 8 SOUND DATA SOUND LEVEL dB A Modello Lp sound power level calculated according to ISO 3744 Lw sound pressu...

Page 22: ...RS The operator s workplace must be kept clean tidy and free from objects that could restrict free movement The workplace must be adequately lit for the intended operations Insufﬁcient or excessive lighting can cause risks Ensure that excellent ventilation of the work rooms is always guaranteed and that the extraction systems are always func tional in an excellent condition and in compliance with ...

Page 23: ...receipt of the extent of the damage Reports after this deadline are not valid In case of signiﬁcant damage complete a written report 4 5 STORAGE If it is necessary to store the unit leave it packed indoors If for some reason the machine is already unpacked follow the instructions below to prevent damage corrosion and or deterioration Ensure that all openings are tightly closed and sealed To clean ...

Page 24: ...the companies as signed to this purpose thus reducing the environmental impact 4 7 LIFTING AND HANDLING Care must be taken when unloading and positioning the unit to avoid sudden or violent manoeuvres to protect the internal components The units can be lifted with the aid of a forklift truck or alternatively by belts being careful not to damage the side and top panels of the unit The unit must alw...

Page 25: ...e unit The units transmit a low level of vibrations to the ground it is in any case advisable to place the antivibration supports between the base frame and the support surface It is necessary to guarantee the minimum service spaces shown below to allow access during operation and maintenance The machine must be installed in a way that allows ordinary and extraordinary maintenance The warranty doe...

Page 26: ...er Connections made by the manufacturer Connections to be performed by the installer Connections made by the manufacturer Connections to be performed by the installer 4 9 2 Domestic hot water side hydraulic connections 4 9 3 Geothermal side water connections System return System delivery High temperature water inlet for domestic hot water use High temperature water outlet for domestic hot water us...

Page 27: ... the following characteristics Total hardness Electric conducibility Sulphur ions Absent Chlorine ions Ammonia ions Absent Sulphuric acid ions Silicon ions Less than 30 mg l Ferrous residue Less than 0 2 mg l In the case of units operating with ground water well version it is necessary to periodically check the quality of the water available to exclude the fact that the ﬂuid may be aggressive for ...

Page 28: ...imum water content l Utility source safety valve bar Model Minimum water content l Utility source safety valve bar 4 12 HYDRAULIC CIRCUIT FILLING Before filling check that all the discharge and drain valves are closed Open all the vent valves on the pipes inside the unit and on the system terminals Open all the shut off valves At the start of filling slowly open the water valve of the filling grou...

Page 29: ...vices group 13 Photovoltaic modules 7 AQUAMATIC Instantaneous domestic hot water producer with thermal storage 14 Photovoltaic system inverter Rev C 09 2020 MTEC 3810 GB C 1 Operation and maintenance manual serie WZA English 29 Ref Description Ref Description 1 Heat pump with recovery 8 Thermal solar collectors 2 Geothermal circuit with inverter pump 9 Thermal solar pumping unit 3 System circuit w...

Page 30: ...ccount all the factors that could inﬂuence it temperature type of insulation length etc The power supply must comply with the stated limits otherwise the warranty will be immediately voided The ﬂow switch must be connected following the indications provided in the wiring diagram Never bridge the ﬂow switch connections in the terminal board The warranty will no longer be considered valid if the ﬂow...

Page 31: ...the nominal value and the imbalance between the phases must be less than 1 according to the EN 60204 standard If these tolerances are not observed please contact our technical department The electrical data may change without notice It is therefore necessary to always refer to the wiring diagram supplied with the unit Electrical power supply Control circuit Auxiliary circuit Line section single ph...

Page 32: ...n in domestic hot water and heat recovery modes It should be placed in a well installed on the domestic hot water storage The temperature read by the probe must be close to the average temperature in the tank the well must be placed at a height of between and and must have a length such as to arrive near the axis The probe must not be struck by water ﬂows at low or high temperature and must not be...

Page 33: ...it is closed with a bridge SA2 Zone 2 room thermostat It must be connected to the dry contact of the zone 2 room thermostat if present F1 Differential pressure switch or source ﬂow switch version P For the well P version units it will be necessary to connect the ﬂow switch supplied with the unit to the F1 input which must be installed on the external side disposable water to protect the machine in...

Page 34: ...p Clean contact for control of the supplementary heat source for the domestic hot water or of the booster pump for zone 2 the function depends on the parameters set maximum capacity 230 Vac 1 A SA6 Integration of the system storage or domestic hot water recirculation pump Clean contact for the control of the domestic hot water heat source for the utility or of the booster pump on the domestic hot ...

Page 35: ...dels only Voltage signal from 0 to 10 Vdc to control the utility pump speed Connect the signal cable to terminal 25 In HFE models the signal is connected at the factory E3 Domestic hot water pump HFS models only Voltage signal from 0 to 10 Vdc to control the Domestic hot water pump speed Connect the signal cable to terminal 26 In HFE models the signal is connected at the factory YV3 System mixing ...

Page 36: ...LLATION 4 18 PRINCIPLE COOLING LAYOUTS 4 18 1 Single compressor unit RPHVWLF VXSSO RPHVWLF VXSSO 6RXUFH User 6RXUFH User 4 18 2 Double compressor unit 6RXUFH ZDWHU LQOHW SUREH RSW RDG RXWOHW 6RXUFH ZDWHU RXWOHW SUREH DSLOODU H SDQVLRQ SLSH LJK SUHVVXUH WUDQVGXFHU 7KHUPRVWDW YDOYH RZ SUHVVXUH WUDQVGXFHU QWDNH OLQH OWHU QWDNH WHPSHUDWXUH SUREH LTXLG LQGLFDWRU 8WLOLW ZDWHU LQOHW SUREH RPSUHVVRU 8WLOL...

Page 37: ...during shipping and installation Before installing or starting up it is good practice to check that there are no refrigerant leaks caused by broken components or refrigeration pipes due to tampering or stresses during handling or on site parking 5 1 1 Before commissioning Check that the machine is installed properly and in compliance with the instructions in this manual Check the electrical connec...

Page 38: ...nd domestic hot water hydraulic circuits that start up upon command of the heat pump regulation The alarm functions are activated at the time of the command 5 2 5 Antifreeze alarm In order to prevent breakage of the plate heat exchanger for freezing of the water contained in it the microprocessor blocks the compressor if the temperature detected by the temperature probe at the exchanger outlet is ...

Page 39: ... solving the cause to reset the alarm Programming Press the button to enter the set point programming or consultation pages ESC Press the key to exit the programming pages Up arrow key Move the ﬂashing cursor to the previous page or increase the value to be modiﬁed ENTER Key To conﬁrm and enter the parameter to be modiﬁed Down arrow key Move the ﬂashing cursor to the next page or decrease the valu...

Page 40: ...l start up of the heat pump must be carried out by personnel authorised by the manufacturer On the machine Turn OFF the general differential switch located outside the machine Place the remote on off switch SA1 see wiring diagram in the OFF position First remove the front panel then the electrical panel Lift the magnetothermal switch on the compressors Close the cover of the electrical panel Place...

Page 41: ...y Select Set clock CK1 and conﬁrm with the Enter key Choose the value to be changed using the Arrow keys Change the value and conﬁrm with the Enter key 6 1 6 Alarms In the event of malfunctions the Alarms symbol lights up Press the Alarms button to view the alarm on the display Press the Esc key to not reset Press the Alarms key again to reset For more detailed information refer to the Control Pan...

Page 42: ...isplay of compressor calls P03 PDC 00 0 c 00 0 c dt 00 0 c TANK impianto Display of system temperatures P04 PDC 000 01 5 c 01 5 c dt 00 0 c TANK Sanitario Display of domestic hot water temperatures P05 PDC 00 0 35 0 c sorgente Display of source and outside air temperatures P14 REset no 000000h 000000h 000000h 000000h 000000h ore funzionamento INVERNO estate sanitaria caldaia solare Display of oper...

Page 43: ...l the parts of the circuit are completely emptied and that each internal or external siphon is drained If it is deemed necessary to replace a machine component both for ordinary and extraordinary maintenance this detail must have characteristics equivalent to the original part Characteristics refer to the same or superior performances or thicknesses which do not compromise the safety use handling ...

Page 44: ...ke sure that the power supply has been disconnected The compressor heads and delivery piping are usually found at high temperatures After maintenance operations close the panels and secure them with the fixing screws 7 4 PERIODIC AND INITIAL START UP CHECKS SITUATION Visual inspection Pressure test Search for leaks A X X X B X X X C X X D X X A Inspection after an intervention with possible effect...

Page 45: ...ic components from any dust present Check the operation and calibration of the probes and transducers 7 4 2 Refrigerant and hydraulic circuits Operations to be performed Frequency Every month Every 6 months Every year When required Check the pressure of the hydraulic circuits and any leaks Check that the ﬂow switch is working properly Clean the metal ﬁlter placed on the water pipe 1 Check the 4 wa...

Page 46: ...ted with a reduction valve up to a pressure of approximately 15 bar Any leaks must be identiﬁed by a leak detector device The appearance of bubbles or foam indicates the presence of localised leaks In this case discharge the circuit before carrying out repairs with appropriate alloys If leak detection tools are installed on the system they should be inspected at least once a year to ensure they ar...

Page 47: ...d out bin present on the label placed on the appliance indicates compliance of this product with the legislation on waste electrical and electronic equipment Discarding into the environment of the equipment or abusive disposal of the same are punishable by law This product falls within the scope of application of Directive 2012 19 EU concerning the management of waste electrical and electronic equ...

Page 48: ...ide hydraulic circuit delivery probe safety intervention Plant water temperature close to freezing Domestic hot water antifreeze Domestic hot water side hydraulic circuit delivery probe safety intervention Domestic hot water temperature close to freezing Source water antifreeze Source side hydraulic circuit delivery probe safety intervention geothermal probe or well Source water side temperature g...

Page 49: ... a phase Noises and vibrations Contacts on metal parts Loose or missing screws Check Tighten the screws Raised pressure High geothermal circuit water temperature in summer mode High water temperature in winter mode High sanitary circuit water temperature Abnormal operation of the 2 way valve on the well side in Summer operation Air in the hydraulic system in winter domestic hot water mode Thermost...

Page 50: ...l connections poorly tightened Operation outside the permitted limits Poor functioning of the probes and pressure switches Thermal protection intervention Check Check Check Check Check Replace the component Check power supply voltage Check the electrical insulation of the windings High electrical consumption Cooling circuit pressure too high with respect to that recommended by the manufacturer Non...

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