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Original Instructions

DEHUMIDIFIERS FOR RADIANT COOLING SYSTEM

SERIE

MTEC.4680.GB-B-1 Operation and maintenance manual GH serie English Rev. B 08-2017

Multiple instructions:
Consult the speci

c part

Read and understand
the instructions before
undertaking any work on
the unit

RET

AIN FOR FUTURE REFERENCE

Incorporated in this document are the following:
• Declaration of conformity
• Technical manual
• Dimensional drawing

TECHNICAL MANUAL

Summary of Contents for GH Series

Page 1: ...anual GH serie English Rev B 08 2017 Multiple instructions Consult the specific part Read and understand the instructions before undertaking any work on the unit RETAIN FOR FUTURE REFERENCE Incorporated in this document are the following Declaration of conformity Technical manual Dimensional drawing TECHNICAL MANUAL ...

Page 2: ...icy of continuous product development and improvement and reserves the right to modify specifications equipment and instructions regarding use and maintenance at any time without notice Declaration of conformity We declare under our own responsibility that the below equipment complies in all parts with the CEE and EN directives The declaration of conformity is enclosed to the technical booklet enc...

Page 3: ... 3 3 Unit components 15 3 5 Refrigerant circuit layout 15 3 6 Technical data 17 3 7 Hydraulic circuit pressure drops 18 3 8 Operation limits 19 3 9 Sound data 19 3 10 Safety devices 20 3 11 Electric data 20 4 INSTALLATION 20 4 1 General safety guidelines and and use of symbols 20 4 2 Health and safety Considerations 21 4 3 Personal protective equipment 21 4 4 Inspection 22 4 5 Storage 22 4 6 Unpac...

Page 4: ...ng an alarm 33 7 MAINTENANCE OF THE UNIT 45 7 1 General warnings 45 7 2 Drive access 45 7 3 Periodical checks 45 7 4 Refrigerant circuit repair 46 8 DECOMMISSIONING 47 8 1 Disconnect the unit 47 8 2 Disposal recovery and recycling 47 8 3 RAEE Directive only UE 47 9 DIAGNOSIS AND TROUBLESHOOTING 48 9 1 Fault finding 48 10 DIMENSIONAL DRAWINGS 49 ...

Page 5: ...ipment These instructions are intended to provide the information required for the selection installation use and maintenance of the unit They have been prepared in accordance with the European Union laws and with the technical standards in force at the date of issue of the instructions The instructions contain all the necessary information to prevent any reasonably foreseeable misuse The manual m...

Page 6: ...to unit unit enclosure Poisoning severe burns Fire due to short circuit or overheating of the supply ca ble external to unit Size cables and mains protection system in accordance with iee regu lations Low pressure safety valve Poisoning severe burns High evaporating pressure causing a refgrigerant dis charge during maintenance Carefully check the evaporating pressure during the maintenance operati...

Page 7: ...ING A black graphic symbol added to a yellow triangle with black edges indicates danger ACTION REQUIRED A white symbol inserted in a blue circle indicates an action that must be done to avoid a risk The graphic symbol warning is qualified with additional safety information text or other symbols Safety symbols combined in accordance with ISO 3864 2 1 7 General Description of Symbols Used Safety sym...

Page 8: ...mperature that could create risks SHARP SURFACES The symbol indicates components or parts that could cause stab wounds EARTH CONNECTION The symbol identifies Earthing connection points in the unit READ AND UNDERSTAND THE INSTRUCTIONS Read and understand the instructions of the machine before any operations RECOVER OR RECYCLE MATERIAL 1 8 Safety symbols used The unit is not suitable for operations ...

Page 9: ...emperatura di progetto Design temperature Peso a vuoto Weight Temperatura di progetto Design temperature CO2 Equivalente CO2 Equivalente Data di fabbricazione Manifacture date PS L E A C S I M I L E F A C F A C S I S I M I L F 0 36 ton 10 ba 2 8 enza uency SSA PRESSIONE SSURE SIDE O2 Equivalente CO2 Equivale Via E Mattei 20 35028 Piove di Sacco Pd Italy MTEC 4680 GB B 1 Operation and maintenance m...

Page 10: ...tion and the following instructions carefully Main Ecological Information Regarding the Types of refrigerants Fluids used 2 1 3 Persistence and degradation The refrigerants used decompose in the lower atmosphere troposphere relatively quickly The decomposed products are highly dispersible and therefore have a very low concentration They do not influence the photochemical smog which is not among th...

Page 11: ...Move the person away from the source of exposure keep him her warm and let him her rest Administer oxygen if necessary Attempt artificial respiration if breathing has stopped or shows sings of stopping If the heart stops perform external heart massage Seek medical assistance In case of contact with skin wash immediately with lukewarm water Thaw tissue using water Remove contaminated clothing Cloth...

Page 12: ...supplied with some jackets to reduce the noise accessory 3 1 4 Condensers and Evaporators The condensers and evaporators are made of copper pipes and aluminium fins The diameter of the copper pipes is 3 8 and the thickness of the aluminium fins is 0 1 mm The tubes are mechanically expanded into the aluminium fins to improve the heat exchange factor The ge ometry of these condensers guarantees a lo...

Page 13: ...nd 200 200W Water temperature sensor that signals to the microprocessor the eventual overcome of the hot water temperature set point in the pre and post water coils during winter operation In this condition the compressor is disconnected while the fan always run and when the water temperature returns within the operation limits restarts the compressor The water sensor stops the compressor when the...

Page 14: ...tion and maintenance manual GH serie English GHDehumidifiers for radiant cooling system 3 4 Unit components 3 4 1 Unit components standard version 3 4 2 Unit components WZ version Air filter Compressor Pre cooling coil Electronic card Evaporator Fan Condenser Bracket Condensing drain Condenser water ...

Page 15: ... condition closed to saturation Now it passes through the evaporating coil 3 where it s fatherly cooled and dehumidified The air passes now through the condensing coil 5 where it s post heated with a constant humidity and in the postcooling coil 6 where it s reported to the required conditions All the dehumidifiers can work without the help of the pre and post cooling coils This function is very u...

Page 16: ... the heat exchanger 10 then there is the post heating so that to avoid to send air in the ambient in neutrum thermic conditions Modality with cooled air The unit condensates the 100 in water through the heat exchanger 10 The air then go through the conden ser 5 disabled where does not change its characteristics temperature and humidity Dehumidification with Air Heated mode The unit in this case pe...

Page 17: ...humidity 65 with cold water coil water inlet temperature 15 C 2 Sound power level measured in accordino to ISO 9614 3 Sound pressure level measured at 1 mt from the unit in free field conditions direction factor Q 2 according to ISO 9614 minimum fan speed 4 Room Temperature 35 C relative humidity 80 3 6 Technical data Model GH Refrigerant Refrigerant charge Global warming potential GWP Equivalent ...

Page 18: ... 100 200 150 250 300 400 350 0 5 10 15 20 25 30 35 40 Mod 100 Mod 200 25 WZ 100 WZ 200 WZ 50 WZ 25 100 200 50 MTEC 4680 GB B 1 Operation and maintenance manual GH serie English GHDehumidifiers for radiant cooling system 3 7 Hydraulic circuit pressure drops Water Flow l h Water Flow l h Water Flow l h Water Flow l h Pressure drop KPa Pressure drop KPa Pressure drop KPa Pressure drop KPa ...

Page 19: ...Sound pressure level measured at 1 mt from the unit in free field conditions direction factor Q 2 according to ISO 9614 minimum fan speed The units MUST be used within the operation limit indicated in the diagrams The warranty will be invalidated if the units are used in ambient conditions outside the limits reported If there is the necessity to operate in different condi tions please contact our ...

Page 20: ...on the coil obstructs the air flow reduces the available exchange area and consequently the unit performances and can seriously damage the system All the units are supplied standard with a control which defrost automatically the heat exchanger if necessary This control provides a temperature probe defrost thermostat on the unit evaporator When the defrost cycle is required the microprocessor contr...

Page 21: ... Hearing protection 4 2 Health and safety Considerations 4 3 Personal protective equipment The workplace must be kept clean tidy and free from objects that may prevent free movement Appropriate ligh ting of the work place shall be provided to allow the operator to perform the required operations safely Poor or too strong lighting can cause risks Ensure that work places are always adequately ventil...

Page 22: ...t be informed within 8 days of the extent of the damage The Customer should prepare a written statement of any severe damage Before accepting the unit check The unit did not suffer any damage during transport The delivered goods are conforming to what shown in the delivery note In Case of Damage List the damage on the delivery note Inform the Company of the extent of the damage within 8 days of re...

Page 23: ...dvisable to cover the inside of the false ceiling with high density bitume layer and to foresee one or more openings to have the possibility to clean the air filters to control the refrigerant circuit and to check the electrical board Legend a 10 cm 1 Ceiling 2 Vibration damper 3 Control board 4 Fan 5 Water connections 6 Condensate discharge 7 Suction filter 8 False ceiling 9 Vent valve 4 7 Liftin...

Page 24: ...n neutral conditions On the units the connection is done using the female gas attacks always present on the unit 4 9 Condensate draining connections 4 10 Water coil hydraulic connection 4 11 How to vent the unit For a correct functioning of the unit it s advisable to bleed carefully the circuit using the vent valve present in the unit The inlet maximum water temperature allowed is 45 C The inlet m...

Page 25: ...intenance manual GH serie English GHDehumidifiers for radiant cooling system 4 12 Ductwork unit connection All the units are provided of ductable centrifugal fans In case of ducts please use a flange with overall dimensions larger than the suction opening on the front on the unit refer to the dimensional drawing of the unit Static pressure Pa Static pressure Pa Air flow m3 h Air flow m3 h ...

Page 26: ...stant air flow to the unit This flow must be close to the nominal value see the drawing The maximum tolerance allowed is 20 The installer will take care to verify during the start up the air flow to the unit and modify if necessary the speed of the fans Static pressure Pa Static pressure Pa Air flow m3 h Air flow m3 h If the air speed through the evaporating coil exceed the 1 5 2 m s the dehumidif...

Page 27: ...TEC 4680 GB B 1 Operation and maintenance manual GH serie English GHDehumidifiers for radiant cooling system 4 13 GH standard version Remote mechanical hygrostat connection HYGR 20 4 14 GH WZ version Remote mechanical hygrostat connection HYGR 30 Summer Winter switch not supplied Winter Common Common Hygrostat Hygrostat Thermostat Summer ...

Page 28: ...mages for the GH100 200 please follow the below procedure 1 Unscrew the screws of the bracket which block the filter both sides 2 Remove the bracket which block the filter as shown in the below image 3 Lift the filter upwards till it s totally out of the unit The filtering material can be reused by blowing or aspiration with air Due to its high efficiency the filter material can be regenerated no ...

Page 29: ... a visible sign of warning not to operate It must be verified that electric supply is corresponding to the unit electric nominal data tension phases frequen cy reported on the label in the front panel of the unit Power cable and line protection must be sized according to the specification reported on the form of the wiring diagram enclosed with the unit The cable section must be commensurate with ...

Page 30: ...pecification reported on the wiring diagram enclosed with the unit Electric supply must be in the limits shown in the opposite case warranty will terminate immediately Before every operation on the electric section be sure that the electric supply is disconnected The unit can be correctly activated only if the connections of the dehumidification and ventilation remote contacts example hygrostat mi...

Page 31: ... speed move Cable n 18 connected at L LOW SPEED Cable n 18 connected at M MEDIUM SPEED Cable n 18 connected at H HIGH SPEED GENERAL ALARM It is used to remote unit general alarm Terminal closed Unit alarm IN Terminal open unit WORKING FAN FORCED It is used to force the unit in ventilation mode only Terminal are free voltage Terminal closed fan forced ON Terminal open fan forced OFF The units are s...

Page 32: ...flushed filled and vented in order to eliminate any air Check that the water temperatures are within the operation limits reported in the manual Before start up check that all panels are replaced in the proper position and locked with fastening screws Before starting the unit the checks detailed in this manual of the electric supply and connections the hydraulic system and the refrigerant circuit ...

Page 33: ...n standby mode In this mode the only visible signs are the green power LED 6 4 Displaying during an alarm Icon Meaning Cause Rimedio High pressure alarm Steady red LED Reset is automatic if the alarm occurs no more than three times an hour More than three times an hour the alarm becomes manual reset To reset it simply remove and restore power Low air flow Clogged filter Low water level High Water ...

Page 34: ...are very sharp and can cause serious wounds Care must be taken when working in their surroundings After servicing replace the cover panels fixing them with locking screws 7 2 Drive access Access to the unit once installed should only be possible to authorized operators and technicians The owner of the equipment is the com pany legal representative entity or person owns the property where the machi...

Page 35: ...uit do not leave it exposed for more than 15 minutes It is important when replacing a compressor that the task be completed within the time specified above after removing the rubber sealing caps When replacing the compressor following a burn out it is advisable to wash the cooling system with appropriate products including a filter for acid When under vacuum do not switch on the compressor 7 3 2 E...

Page 36: ...ional information can be obtained from the manufacturer 9 DIAGNOSIS AND TROUBLESHOOTING 9 1 Fault finding All units are checked and tested at the factory before shipment however during operation an anomaly or failure can occur BE SURE TO RESET AN ALARM ONLY AFTER YOU HAVE REMOVED THE CAUSE OF THE FAULT REPEA TED RESET MAY RESULT IN IRREVOCABLE DAMAGE TO THE UNIT Regarding the possible remedies it ...

Page 37: ...UT Ø1 2 GF IN Ø1 2 GF MTEC 4680 GB B 1 Operation and maintenance manual GH serie English GHDehumidifiers for radiant cooling system 10 DIMENSIONAL DRAWINGS Dimensional drawing GH 25 25WZ ELECRICAL PANEL POWER SUPPLY DRAIN INLET CONDENSATE DRAIN USER WATER OUTLET USER WATER INLET WEIGHT OF THE UNIT Modd WEIGHT Kg GH 25 35 GH 25 WZ 37 ...

Page 38: ...82 25 8 Ep Es Cd OUT Ø1 2 GF IN Ø1 2 GF MTEC 4680 GB B 1 Operation and maintenance manual GH serie English GHDehumidifiers for radiant cooling system Dimensional drawing GH 50 50WZ ELECRICAL PANEL POWER SUPPLY DRAIN INLET CONDENSATE DRAIN USER WATER OUTLET USER WATER INLET WEIGHT OF THE UNIT Modd WEIGHT Kg GH 50 52 GH 50 WZ 55 ...

Page 39: ... 32 238 101 Ep Es Cd OUT Ø1 2 GF IN Ø1 2 GF MTEC 4680 GB B 1 Operation and maintenance manual GH serie English GHDehumidifiers for radiant cooling system Dimensional drawing GH 100 100WZ ELECRICAL PANEL POWER SUPPLY DRAIN INLET CONDENSATE DRAIN USER WATER OUTLET USER WATER INLET WEIGHT OF THE UNIT Modd WEIGHT Kg GH 100 87 GH 100 WZ 90 ...

Page 40: ...5 888 8 Ep Es Cd OUT Ø1 2 GF IN Ø1 2 GF MTEC 4680 GB B 1 Operation and maintenance manual GH serie English GHDehumidifiers for radiant cooling system Dimensional drawing GH 200 200WZ ELECRICAL PANEL POWER SUPPLY DRAIN INLET CONDENSATE DRAIN USER WATER OUTLET USER WATER INLET WEIGHT OF THE UNIT Modd WEIGHT Kg GH 200 115 GH 200 WZ 120 ...

Page 41: ...Rev B 08 2017 41 MTEC 4680 GB B 1 Operation and maintenance manual GH serie English GHDehumidifiers for radiant cooling system ...

Page 42: ...Rev B 08 2017 42 MTEC 4680 GB B 1 Operation and maintenance manual GH serie English GHDehumidifiers for radiant cooling system ...

Page 43: ...Rev B 08 2017 43 MTEC 4680 GB B 1 Operation and maintenance manual GH serie English GHDehumidifiers for radiant cooling system ...

Page 44: ...8340283 R E A PD 322111 REG IMP PD 0359834 028 3 VAT NUMBER IT 03598340283 CAPITALE SOCIALE 1 200 000 00 i v Technical data shown in this booklet are not binding The Company shall have the right to introduce at any time whatever modifications necessary to the improvement of the product The reference languages for the whole documentation are Italian and English The other languages are to be conside...

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