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Galletti MPE series, Installation, Use And Maintenance Manual

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Galletti MPE series Installation, Use And Maintenance Manual Download Page 25

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All copying, even partial, of this manual is strictly forbidden

RG66007169 - Rev 00

3 

PLUMBING AND ELECTRICAL CONNECTIONS

3.1  

PLUMBING CONNECTION 

3.1.2  

RECOMMENDED WATER CIRCUIT

3.1.3 

FILLING THE SYSTEM

-  Before you start filling, make sure that the system drainage cock is closed.
-  Open all the air vent valves of the system and of the indoor units and chiller.
-  Open the system regulating devices.
-  To fill the circuit open slowly the water tap of the system (optional).
-  When water starts coming out of the air vent valves of the indoor units, close them and continue filling until the pressure gauge reading is 1.5 bars.

OPTIONAL

 LEGEND
VS

 Safety 

valve

EV

 Evaporator

PD

 

Water differential pressure switch

MA

 Water 

gauge

VAS

 

Air bleed hole

SA

 Storage 

tank

VE

 Expansion 

vessel

RS

 Drain

RC

 Water 

charge

VI

 

Regulation valve (not supplied)

GA

 

Vibration-damping coupling (not supplied)

FM

 

Mechanical filter (OBLIGATORY)

VNR

 

Check valve (not supplied)

Summary of Contents for MPE series

Page 1: ...MPE 4 kW 76 kW INSTALLATION USE AND MAINTENANCE MANUAL GB ...

Page 2: ...ging the operating mode from the keyboard on the unit 31 5 4 Display and setting of operating parameters 32 5 4 1 Parameters 32 5 5 Regulation logic 32 5 6 Set point compensation 33 5 7 Signals and alarms 34 5 7 1 Alarm reset 34 6 OPERATING LIMITS 35 6 1 Operating limits in chiller mode 35 6 2 Operating limits in heat pump mode 36 6 3 Thermal carrying fluid 36 7 CONTROL AND SAFETY DEVICES 37 7 1 C...

Page 3: ...lletti S p A via L Romagnoli 12 a 40010 Bentivoglio BO Italia The unit data are reported on the rating label in this page THE LABEL SHOWS THE FOLLOWING DATA Series and size of the unit Date of manufacture Main technical data Manufacturer The label is applied on the unit usually on the enclosing panels beside the condenser coil IMPORTANT NEVER REMOVE THE LABEL Serial number of the unit The serial n...

Page 4: ... THE FIRST START UP MUST BE CARRIED OUT EXCLUSIVELY BY QUALIFIED PERSONNEL AND AUTHORIZED BY GALLETTI SPA SEE WARRANTY SHEET ATTACHED Before performing any work on the unit disconnect it from the power supply Failure to comply with the rules provided in this manual will result in the immediate invalidation of the warranty Galletti S p A shall not accept any liability for injury or damage resulting...

Page 5: ...rd 400 3N 50 0 Single phase M 400 3N 50 thermalmagnetic 2 Single Phase thermalmagnetic 4 Expansion Valve 0 Standard valve 0 Electronic expansion valve A Pump and accessories 0 Not present 0 Pump vessel water charge valve 1 Double pump vessel water charge valve 2 Buffer tank 0 Not present 0 Present S Heat Recover cooling only models 0 Not present 0 Present with contact for pump D Condensing control...

Page 6: ... heat exchanger 3 Fans 4 Water differential pressure switch fan housing 5 Automatic air purge valve 6 Expansion vessel fan housing 7 Water tank accessory 9 4 way valve MPE H 10 Thermostatic valve 11 Water safety valve 12 Liquid receiver 13 Pump 14 Compressor 15 Refrigerant filter 16 Low pressure switch and charge port 17 High pressure switch and charge port 18 Water gauge 19 Water charge ...

Page 7: ...changer 3 Fans 4 Water differential pressure switch fan housing 5 Automatic air purge valve 6 Expansion vessel fan housing 7 Water tank accessory 9 4 way valve MPE H 10 Thermostatic valve 11 Water safety valve 12 Liquid receiver fan housing 13 Pump 14 Compressor 15 Refrigerant filter 16 Low pressure switch and charge port 17 High pressure switch and charge port 18 Water gauge 19 Water charge ...

Page 8: ...exchanger 3 Fans 4 Water differential pressure switch fan housing 5 Automatic air purge valve 6 Expansion vessel fan housing 7 Water tank accessory 9 4 way valve MPE H 10 Thermostatic valve 11 Water safety valve 12 Liquid receiver fan housing 13 Pump 14 Compressor 15 Refrigerant filter 16 Low pressure switch and charge port 17 High pressure switch and charge port 18 Water gauge 19 Water charge ...

Page 9: ...changer 3 Fans 4 Water differential pressure switch fan housing 5 Automatic air purge valve 6 Expansion vessel fan housing 7 Water tank accessory 9 4 way valve MPE H 10 Thermostatic valve 11 Water safety valve 12 Liquid receiver fan housing 13 Pump 14 Compressor 15 Refrigerant filter 16 Low pressure switch and charge port 17 High pressure switch and charge port 18 Water gauge 19 Water charge ...

Page 10: ...exchanger 3 Fans 4 Water differential pressure switch fan housing 5 Automatic air purge valve 6 Expansion vessel fan housing 7 Water tank accessory 9 4 way valve MPE H 10 Thermostatic valve 11 Water safety valve 12 Liquid receiver fan housing 13 Pump 14 Compressor 15 Refrigerant filter 16 Low pressure switch and charge port 17 High pressure switch and charge port 18 Water gauge 19 Water charge ...

Page 11: ...xchanger 3 Fans 4 Water differential pressure switch fan housing 5 Automatic air purge valve 6 Expansion vessel fan housing 7 Water tank accessory 9 4 way valve MPE H 10 Thermostatic valve 11 Water safety valve 12 Liquid receiver fan housing 13 Pump 14 Compressor 15 Refrigerant filter 16 Low pressure switch and charge port 17 High pressure switch and charge port 18 Water gauge 19 Water charge ...

Page 12: ... exchanger 3 Fans 4 Water differential pressure switch fan housing 5 Automatic air purge valve 6 Expansion vessel fan housing 7 Water tank accessory 8 4 way valve MPE H 9 Thermostatic valve 10 Water safety valve 11 Liquid receiver fan housing 12 Pump 13 Compressor 14 Refrigerant filter 15 Low pressure switch and charge port 16 High pressure switch and charge port 17 Water gauge 18 Water charge ...

Page 13: ... 1 4 WATER CIRCUITS MPE EVAPORATOR AND PUMP MPE EVAPORATOR OPTIONAL OPTIONAL LEGEND VS Safety valve EV Evaporator PD Water differential pressure switch MA Water gauge VAS Air bleed hole OPTIONAL ONLY FOR MPE 28 66 30 45T 54 76T RANGE VE Expansion vessel P Pump RS Drain RC Water charge VU Check valve ...

Page 14: ... PUMP AND BUFFER TANK OPTIONAL OPTIONAL OPTIONAL ONLY FOR MPE 28 66 30 45T 54 76T RANGE ONLY FOR MPE 10 27 RANGE ONLY FOR MPE 10 27 RANGE NOT AVAILABLE FOR MPE 04 08 NOT AVAILABLE FOR MPE 04 08 LEGEND VS Safety valve EV Evaporator PD Water differential pressure switch MA Water gauge VAS Air bleed hole VE Expansion vessel P Pump RS Drain RC Water charge VU Check valve ...

Page 15: ...nit from the pallet handle it gently without applying excessive pressure on the side panels finned coil and fan grille You should collect and separate the packing materials wood cardboard nylon etc and make them available for recycling in order to minimise their environmental impact Before lifting remove the screws that fasten the machine base to the wooden pallet The unit must be lifted using Ø 1...

Page 16: ...CONVEYANCE DIMENSIONAL AND SITING 2 3 DIMENSIONAL LEGEND 1 Water in 1 female 2 Water out 1 female 3 Safety valve discharge outlet provided with rubber ring holder 4 Water supply 1 2 male optional tap 5 Drain manifold 1 2 female 6 Power supply Ø 28 mm 7 Electric control board 8 Dampers fastening points accessory ...

Page 17: ...ANCE DIMENSIONAL AND SITING 2 3 DIMENSIONAL LEGEND 1 Water in 1 1 4 female 2 Water out 1 1 4 female 3 Safety valve discharge outlet provided with rubber ring holder 4 Water supply 1 2 male optional tap 5 Drain manifold 1 2 female 6 Power supply Ø 28 mm 7 Electric control board 8 Dampers fastening points accessory ...

Page 18: ...EYANCE DIMENSIONAL AND SITING 2 3 DIMENSIONAL LEGEND 1 Water in 1 1 4 female 2 Water out 1 1 4 female 3 Safety valve discharge outlet provided with rubber ring holder 4 Water supply 1 2 male optional tap 5 Drain manifold 1 2 female 6 Power supply ĭ 28 mm 7 Electric control board 8 Dampers fastening points accessory ...

Page 19: ...AL AND SITING 2 3 DIMENSIONAL MPE 28 45 WITH BUFFER TANK MPE 30 45 T LEGEND 1 Water in 1 1 4 female 2 Water out 1 1 4 female 3 Safety valve discharge outlet provided with rubber ring holder 4 Water supply 1 2 male optional tap 5 Drain manifold 1 2 female 6 Power supply Ø 37 mm 7 Electric control board 8 Dampers fastening points accessory ...

Page 20: ...ENSIONAL AND SITING 2 3 DIMENSIONAL MPE 54 66 WITH BUFFER TANK LEGEND 1 Water in 2 female 2 Water out 2 female 3 Safety valve discharge outlet provided with rubber ring holder 4 Water supply 1 2 male optional tap 5 Drain manifold 1 2 female 6 Power supply Ø 37 mm 7 Electric control board 8 Dampers fastening points accessory ...

Page 21: ...is strictly forbidden RG66007169 Rev 00 2 INSPECTION CONVEYANCE DIMENSIONAL AND SITING 2 3 DIMENSIONAL LEGEND 1 Water in 2 female 2 Water out 2 female 3 Drain manifold 1 2 female 4 Power supply 5 Electric control board 6 Dampers fastening points accessory ...

Page 22: ...irements This appliance is not intended to be used by children or persons with physical sensorial or mental problems inexpert or unprepared without supervision Be careful that children do not approach the appliance 2 4 1 INSTALLATION CLEARANCE REQUIREMENTS To guarantee the proper functioning of the unit and access for maintenance purposes it is necessary to comply with the minimum installation cle...

Page 23: ... CONNECTION SIDE ELECTRICAL BOX EXCHANGER SIDE HEAT EXCHANGER WATER CONNECTION SIDE EXCHANGER SIDE ELECTRICAL BOX MPE N DAMPERS 04 08 4 10 15 4 18 27 4 28 66 6 30 45 T 6 54 76 T 6 2 5 DAMPERS SITING DAMPERS MPE 30 45T SIDE DISCHARGE WATER ELECTRICAL BOX EXCHANGER SIDE HEAT EXCHANGER WATER CONNECTION SIDE MPE 30 45T SIDE DISCHARGE WATER HEAT EXCHANGER WATER CONNECTION SIDE ELECTRICAL BOX EXCHANGER ...

Page 24: ... the unit in proximity to the latter standard mechanical filter FM OBLIGATORY and check valve VNR on the supply line upstream from the filling tap RC an air vent valve at the highest point of the circuit escape pipe for the safety valve VS which in the event the safety valve opens diverts the jet of water to an area where it cannot harm persons or damage property Important vibration damping coupli...

Page 25: ...the system regulating devices To fill the circuit open slowly the water tap of the system optional When water starts coming out of the air vent valves of the indoor units close them and continue filling until the pressure gauge reading is 1 5 bars OPTIONAL LEGEND VS Safety valve EV Evaporator PD Water differential pressure switch MA Water gauge VAS Air bleed hole SA Storage tank VE Expansion vesse...

Page 26: ...om the electric control board you must provide a switch with a delayed fuse meeting the specifications indicated in the table To access the electric control board it is necessary to remove the inspection panel figure 4 by taking out the screws introduce the power cable into the unit through the bushing on the side panel then bring it to the electric control board through the cable holder provided ...

Page 27: ...2 00 2 00 2 00 2 00 3 00 Power supply V f Hz Auxiliary power supply V f Hz Power cables mm2 4 0 4 0 6 0 6 0 4 0 6 0 4 0 4 0 4 0 6 0 6 0 10 0 10 0 10 0 PCD connecting cables mm2 PCDS connecting cables mm2 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 Safety fuse F A 16 0 16 0 20 0 25 0 10 0 32 0 16 0 20 0 20 0 25 0 25 0 32 0 32 0 32 0 Circuit breaker IL A 20 0 20 0 25 0 25 0 16 0 32 0 20 ...

Page 28: ...E CONTROL PANEL NOTE On the terminal block of the electric control panel a voltage of 24V will be present at the 50 24V terminals in the event of an alarm if it is desired to interface with a voltage free contact a relay must be applied for this purpose by the installer GENERAL ALARM SIGNAL COOLING HEATING REMOTE SELECTION ON OFF STAND BY SWITCH PCDS POWER SUPPLY USE SHIELDED CABLE WITH ONE TWISTE...

Page 29: ...k that the plumbing connections have been properly made according to the indications given on the plates to be found on the unit itself water inlet water outlet etc Make sure that the pump is not blocked Make sure that the water circuit is duly bled to completely eliminate the presence of air load the circuit gradually and open the air vent valves which the installer should have set in place Warni...

Page 30: ...ctronic control device Installing a PCD remote control panel instead provides remote access to all the electronic control functions installed in the unit 5 1 2 MAIN FUNCTIONS Control over the temperature of water entering the evaporator Management of the defrosting function MPE H only Control of fan speed standard feature of MPE H optional for MPE Complete alarm management Setup for serial line co...

Page 31: ...eating mode using the PCDS remote control accessory or open terminal bridge 19 30 on the electric control board see section 5 3 3 5 3 2 SWITCHING THE UNIT ON AND OFF IN THE HEATING MODE MPE H HEAT PUMP MODEL ONLY Pressing for more than 5 seconds allows the heating mode to be activated or deactivated It is not possible to change over directly from the heating mode to the cooling mode to do so it is...

Page 32: ...utton return to the previous value b If no operations are performed on the keypad for 60 seconds the controller exits the parameter modification menu by timeout and the changes are cancelled With this new configuration the operating mode can be changed only from the keypad on the unit itself or from the PCD remote control panel accessory which remotely duplicates all its functions terminals 19 30 ...

Page 33: ...n other situations the setpoint actually being used to control the unit will thus not be displayable as a parameter on the controller such a situation might however mislead the end user into making an unsuitable setpoint adjustment HEAT PUMP UNITS Such units provide for the offset logic to be used in the heating mode in order to reduce the working setpoint as the outdoor temperature decreases The ...

Page 34: ...m relay is activated and the display starts flashing The alarm must be manually reset EPr EPb Eeprom error alarm It indicates that a problem has occurred in the saving of parameters in the non volatile memory of the unit EEPROM If the code shown is EPr the unit will continue to function until the next time the power supply is cut off If the error is still present when the power supply is restored ...

Page 35: ...option OPZ 1 2 Condensation control glycol low temperature option EEV Electronic expansion valve STD Standard Warning The units are designed to work with water and air temperatures falling within the range defined by the operating limits Attempting to operate the units beyond these limits could cause irreparable damage to the units themselves 1 For transitory periods e g equipment start up values ...

Page 36: ...URE All copying even partial of this manual is strictly forbidden RG66007169 Rev 00 6 OPERATING LIMITS 6 2 OPERATING LIMITS IN HEAT PUMP MODE RH Relative humidity of outdoor air Tbs1 Outdoor temperature dry bulb Tw2 Outlet water temperature 6 3 THERMAL CARRYING FLUID The units belonging to the MPE series can work with mixtures of water and up to 30 ethylene glycol ...

Page 37: ...essure switch stops the compressor when the intake pressure falls below the set value 7 2 4 ANTI RECYCLE TIMER The function of the timer is to prevent excessively frequent compressor starts and stops This device is a function included in the microprocessor control it prevents the compressor from starting up again after a stop until a set period of time has elapsed approximately 5 minutes 7 2 5 ANT...

Page 38: ...scribed in this section MUST ALWAYS BE PERFORMED BY QUALIFIED PERSONNEL Warning Before carrying out any work on the unit or accessing internal parts make sure you have disconnected it from the mains electricity supply Warning The upper part of the compressor casing and the outlet pipe reach high temperatures Be especially careful when working in their vicinity Warning Be especially careful when wo...

Page 39: ...7 7 5 8 5 9 7 9 2 Maximum power input kW 2 0 2 3 3 0 5 0 5 0 5 1 7 2 8 9 10 5 12 5 13 6 14 5 18 0 18 3 Maximum current absorption A 9 8 11 6 15 3 24 2 9 2 26 3 14 4 17 4 20 0 24 3 26 2 27 6 33 6 35 5 Starting absorbed current A 38 44 63 98 49 99 50 65 68 75 104 158 132 133 n of compressors circuits 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Refrigerant charge kg 1 5 1 5 2 0 2 1 2 1 2 ...

Page 40: ... 2 16 9 19 6 22 5 24 9 28 8 Maximum power input kW 18 9 21 8 22 4 22 7 23 3 20 9 24 4 26 6 30 8 27 0 29 9 32 3 39 4 Maximum current absorption A 36 5 41 5 42 5 45 2 46 2 39 9 45 9 49 7 56 7 48 0 53 0 57 0 69 0 Starting absorbed current A 166 161 163 163 165 86 96 127 130 177 187 202 229 n of compressors circuits 1 1 1 1 1 1 1 1 1 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 Refrigerant charge kg 7 5 7 8 10 8...

Page 41: ... Heating power input kW 1 6 1 9 2 5 3 7 3 4 4 0 4 0 5 1 5 9 7 0 7 5 8 5 9 3 9 7 Maximum power input kW 2 0 2 3 3 0 5 0 5 0 5 1 7 2 8 9 10 5 12 5 13 6 14 5 18 0 18 3 Maximum current absorption A 9 8 11 6 15 3 24 2 9 2 26 3 14 4 17 4 20 0 24 3 26 2 27 6 33 6 35 5 Starting absorbed current A 38 44 63 98 49 99 50 65 68 75 104 158 132 133 n of compressors circuits 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

Page 42: ...3 2 MPE HP HS Heating power input kW 11 0 12 1 13 7 19 2 24 0 11 4 13 4 14 5 16 8 19 8 22 8 24 7 28 1 Maximum power input kW 18 9 21 8 22 4 22 7 23 3 20 9 24 4 26 6 30 8 27 0 29 9 32 3 39 4 Maximum current absorption A 36 5 41 5 42 5 45 2 46 2 39 9 45 9 49 7 56 7 48 2 53 2 57 2 69 2 Starting absorbed current A 166 161 163 163 165 86 96 127 130 177 187 202 229 n of compressors circuits 1 1 1 1 1 1 ...

Page 43: ... valve 9 High pressure switch 10 Low pressure switch 11 High pressure gauge 12 Low pressure gauge 13 Service connection 14 Diff pressure switch 15 Check valve 16 4 Way diversion valve 17 Liquid separator 18 Liquid receiver 19 Pressure transducer 20 Liquid distributor 21 Oil pressure switch 22 Desuperheater 23 Shut Off valve 24 Pocket 25 Security valve 26 Fusible plug 27 Flow switc 28 Restrictor 29...

Page 44: ...ll copying even partial of this manual is strictly forbidden RG66007169 Rev 00 11 COOLING CIRCUIT 11 2 MPE 04 07 WATER CHILLER COOLING CIRCUIT WITH ELECTRONIC VALVE 11 1 MPE 04 07 WATER CHILLER COOLING CIRCUIT ...

Page 45: ...ll copying even partial of this manual is strictly forbidden RG66007169 Rev 00 11 COOLING CIRCUIT 11 4 MPE H 04 07 HEAT PUMP COOLING CIRCUIT WITH ELECTRONIC VALVE 11 3 MPE H 04 07 HEAT PUMP COOLING CIRCUIT ...

Page 46: ...COOLING CIRCUIT WITH ELECTRONIC VALVE 11 5 MPE 08 27 WATER CHILLER COOLING CIRCUIT NOT PRESENT IN MPE 08 15 NOT PRESENT IN MPE 08 15 OPTIONAL NOT AVAILABLE FOR MPE 08 OPTIONAL NOT AVAILABLE FOR MPE 08 OPTIONAL NOT AVAILABLE FOR MPE 08 OPTIONAL NOT AVAILABLE FOR MPE 08 OPTIONAL NOT AVAILABLE FOR MPE 08 OPTIONAL NOT AVAILABLE FOR MPE 08 ...

Page 47: ...CUIT 11 8 MPE H 08 27 HEAT PUMP COOLING CIRCUIT WITH ELECTRONIC VALVE 11 7 MPE H 08 27 HEAT PUMP COOLING CIRCUIT NOT PRESENT IN MPE 08 15 NOT PRESENT IN MPE 08 15 OPTIONAL NOT AVAILABLE FOR MPE 08 OPTIONAL NOT AVAILABLE FOR MPE 08 OPTIONAL NOT AVAILABLE FOR MPE 08 OPTIONAL NOT AVAILABLE FOR MPE 08 ...

Page 48: ...this manual is strictly forbidden RG66007169 Rev 00 11 COOLING CIRCUIT 11 10 MPE 28 66 WATER CHILLER COOLING CIRCUIT WITH ELECTRONIC VALVE 11 9 MPE 28 66 WATER CHILLER COOLING CIRCUIT OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL ...

Page 49: ...tial of this manual is strictly forbidden RG66007169 Rev 00 11 COOLING CIRCUIT 11 12 MPE H 28 66 HEAT PUMP COOLING CIRCUIT WITH ELECTRONIC VALVE 11 11 MPE H 28 66 HEAT PUMP COOLING CIRCUIT OPTIONAL OPTIONAL OPTIONAL OPTIONAL ...

Page 50: ... this manual is strictly forbidden RG66007169 Rev 00 11 COOLING CIRCUIT 11 14 MPE 30 76 T HEAT PUMP COOLING CIRCUIT WITH ELECTRONIC VALVE 11 13 MPE 30 76 T HEAT PUMP COOLING CIRCUIT OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL ...

Page 51: ...al of this manual is strictly forbidden RG66007169 Rev 00 11 COOLING CIRCUIT 11 16 MPE H 30 76 T HEAT PUMP COOLING CIRCUIT WITH ELECTRONIC VALVE 11 15 MPE H 30 76 T HEAT PUMP COOLING CIRCUIT OPTIONAL OPTIONAL OPTIONAL OPTIONAL ...

Page 52: ...tifreeze sensor defective Tripping of main circuit breaker Not enabled by high or low pressure switch Compressor defective Compressor burnout or seizure Compressor contactor deenergized Power circuit open Motor thermal protection open Minimum pressure switch has tripped Compressor contactor defective Wrong set point or differential setting Lack of refrigerant Possible remedy Check the voltage and ...

Page 53: ...pump blocked defective Presence of frost on the evaporating coil Evaporator fan not working Refrigerant filter clogged Expansion valve is not working properly Presence of humidity in the cooling circuit Fan contactor deenergized MPE only No power output by the fan speed control card only MPE H or MPE with condensation control The fan s internal thermal protection has tripped Fan motor defective Lo...

Page 54: ...tedheatingcapacity Liquid filter clogged Low level of refrigerant 4 way cycle reversing valve defective Expansion valve is not working properly Water circulation pump blocked Water circulation pump defective Low level of refrigerant Liquid filter clogged 4 way cycle reversing valve defective The defrost thermostat has broken down or has been set incorrectly The compressor is noisy The panels vibra...

Page 55: ...55 All copying even partial of this manual is strictly forbidden RG66007169 Rev 00 NOTES ...

Page 56: ...www galletti it 40010 Bentivoglio BO Via Romagnoli 12 a Tel 051 8908111 Fax 051 8908122 Company UNI EN ISO 9001 and OHSAS 18001 certified ...

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