Galletti MPE series User manual

MPE
4 kW - 76 kW
INSTALLATION, USE AND MAINTENANCE MANUAL
GB

MPE
2All copying, even partial, of this manual is strictly forbidden RG66007169 - Rev 00
1 THE MPE SERIES ................................................................................... 5
1.1 Field of application ................................................................................ 5
1.2 Models and versions.............................................................................. 5
1.3 Components lay-out............................................................................... 6
1.4 Water circuits ...................................................................................... 13
2 INSPECTION, CONVEYANCE DIMENSIONAL AND SITING..................... 15
2.1 Inspection............................................................................................ 15
2.2 Conveyance ......................................................................................... 15
2.3 Dimensional......................................................................................... 16
2.4 Siting ................................................................................................... 22
2.4.1 Installation clearance requirements........................................................ 22
2.5 Dampers siting .................................................................................... 23
3 PLUMBING AND ELECTRICAL CONNECTIONS...................................... 24
3.1 Plumbing connection ........................................................................... 24
3.1.1 Hydraulic connection ............................................................................ 24
3.1.2 Recommended water circuit.................................................................. 24
3.1.3 Filling the system.................................................................................. 25
3.2 Electrical connections.......................................................................... 26
3.3 Electrical data...................................................................................... 27
4 STARTING UP....................................................................................... 29
4.1 Preliminary checks .............................................................................. 29
5 MICROPROCESSOR CONTROL............................................................. 30
5.1 Description of control panel................................................................. 30
5.1.1 Remote control panels (accessories)..................................................... 30
5.1.2 Main functions...................................................................................... 30
5.1.3 Devices controlled ................................................................................ 30
5.2 Using the control panel........................................................................ 30
5.2.1 Display ................................................................................................. 30
5.2.2 Information about equipment status....................................................... 31
5.3 Switching on and off and changing the operating mode ...................... 31
5.3.1 Switching the unit on and off in the cooling mode.................................. 31
5.3.2 Switching the unit on and off in the heating mode
(MPE H heat pump model only) ............................................................ 31
5.3.3 Switching on and off and changing the operating mode ......................... 31
5.3.4 Changing 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 Control devices.................................................................................... 37
7.1.1 Service thermostat................................................................................ 37
7.1.2 Control device settings.......................................................................... 37
7.2 Safety devices ..................................................................................... 37
7.2.1 High pressure switch ............................................................................ 37
7.2.2 Refrigerant circuit safety valve............................................................... 37
7.2.3 Low pressure switch............................................................................. 37
7.2.4 Anti-recycle timer.................................................................................. 37
7.2.5 Antifreeze thermostat ............................................................................ 37
7.2.6 Water differential pressure switch.......................................................... 37
7.2.7 Water safety valve................................................................................. 37
7.2.8 Safety device settings ........................................................................... 37
8 ROUTINE MAINTENANCE AND CHECKS ............................................... 38
8.1 Checks to be performed by the user .................................................... 38
8.2 Checks and maintenance to be performed by
specialised personnel.......................................................................... 38
9 RETIRING THE UNIT............................................................................. 38
10 TECHNICAL FEATURES ........................................................................ 39
10.1 Water chillers rated technical data...................................................... 39
10.2 Heat pumps rated technical data......................................................... 40
11 COOLING CIRCUITS ............................................................................. 43
12 TROUBLESHOOTING ............................................................................ 52
TRANSLATION OF ORIGINAL INSTRUCTIONS
The technical and dimensional data reported in this manual may be modified in view
of any product improvement.
WATER CHILLERS AND HEAT PUMPS ARE IN ACORDARCE WITH THE
LAW 97/23/CE (PED) FILLING IN D1 FORM, APPROVED BY THE THIRD
NOTIFIED BODY ICIM N°0425.

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Serial number
Code
Date of production
Cooling capacity (W)
Heating capacity (W)
Power supply
Power input (kW)
Weight (kg)
Max power input (kW)
Max running amperage (A)
HP Power input (kW)
Refrigerant
Max refrigerant pressure (bar)
Max refrigerant temperature (°C)
Made in Italy
CATEGORIA 1
Galletti 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 number permits to identify the technical characteristics and the components installed
- Without this datum it will be impossible to identify the unit correctly

MPE
4All copying, even partial, of this manual is strictly forbidden RG66007169 - Rev 00
GENERAL CAUTIONARY NOTES
- Keep this manual intact in a safe place for the all life of the unit.
- Carefully read all the information contained in this manual, paying special attention to sections marked "Important" and "Warning"; failure to comply with
the instructions provided could result in injury to persons or damage to the equipment.
- Should a fault occur, consult this manual and if necessary contact the nearest Galletti S.p.A. service centre.
- All installation and maintenance operations must be carried out by qualified personnel, unless otherwise indicated in this manual.
- 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 from improper use of the equipment or failure to comply with the directions
provided in this manual and on the unit itself.
- For further information or communication, please contact the company at: [email protected]
- To find out the weight of each unit, please refer to the table in the paragraph “Rated specifications”
SAFETY SYMBOLS
Read the manual carefully WARNING Use personal protective
equipment
USE SUITABLE PPE (GLOVES FOR REFRIGERANT, PROTECTIVE GOGGLES).

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All copying, even partial, of this manual is strictly forbiddenRG66007169 - Rev 00
1 THE MPE SERIES
1.1 FIELD OF APPLICATION
MPE air-condensed water chillers and heat pumps have been designed to cool and heat water for air conditioning and heating systems in residential or
commercial buildings. The MPE range units are intended for outdoor installation (IP24 protection degree), in a position not accessible to the public. If
protection grids are not provided (accessory) and if the machine can be reached by non-specialised personnel, access to the finned coil must be prohibited
using appropriate barriers. Do not install the unit in environments with gas or flammable dusts.
1.2 MODELS AND VERSIONS
The MPE series includes 27 models with different in cooling only and heat pump version: All models are charged with R410A refrigerant.
The choice of some options can prevent the choice of some options or oblige the selection of other fields. To contact the Galletti for verification
CompleteUnitCodeMPE009C00000000000001
Version 0
Single compressor 0
Tandem T
Model (size) 0 9
Operation C
Chiller C
Heat pump H
Power Supply 0
Standard 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 0
Not present 0
With modulating air flow C
Antifreeze kit 0
Not present 0
Present, standard unit E
Present, unit with pump and vessel P
Present, unit with pump, vessel and tank S
Acoustic insulation 0
Not present 0
Sound proofing insulation for compressor housing 1
Refrigerant circuit accessoires 0
Not present 0
Refrigerant gauge M
Remote control 0
Not present 0
RS485 port (modbus + carel protocol) 2
Simplified S
Base microprocessor remote control (modbus excluded ) M
ADVANCED microprocessor remote control X
Special coil 0
Standard O
Copper / copper heat exchanger R
Cataphoresis C
“Blygold” B
Protection grille 0
Not present 0
Present G
Compressor options 0
Not present 0
Power factor correction capacitors 1
Soft starter 2
Power factor correction capacitors + soft starter 3
Low temperature air water pressure switch carter heater (chiller), coil cable (PDC) 4
Control panel 1
Basic microprocessor 1
Advanced microprocessor (not available for models 04 ~ 08) 2

MPE
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MPE 04 ÷ 08
All copying, even partial, of this manual is strictly forbidden RG66007169 - Rev 00
1 THE MPE SERIES
1.3 COMPONENTS LAY-OUT
DESCRIPTION
1. R410A-air heat-exchanger
2. R410A-water 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

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MPE 10 ÷ 15
All copying, even partial, of this manual is strictly forbiddenRG66007169 - Rev 00
1 THE MPE SERIES
1.3 COMPONENTS LAY-OUT
DESCRIPTION
1. R410A-air heat-exchanger
2. R410A-water 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 (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

MPE
8
MPE 18 ÷ 27
All copying, even partial, of this manual is strictly forbidden RG66007169 - Rev 00
1 THE MPE SERIES
1.3 COMPONENTS LAY-OUT
DESCRIPTION
1. R410A-air heat-exchanger
2. R410A-water 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 (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

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MPE 28 ÷ 40
All copying, even partial, of this manual is strictly forbiddenRG66007169 - Rev 00
1 THE MPE SERIES
1.3 COMPONENTS LAY-OUT
DESCRIPTION
1. R410A-air heat-exchanger
2. R410A-water 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 (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

MPE
10
MPE 54 ÷ 66
All copying, even partial, of this manual is strictly forbidden RG66007169 - Rev 00
1 THE MPE SERIES
1.3 COMPONENTS LAY-OUT
DESCRIPTION
1. R410A-air heat-exchanger
2. R410A-water 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 (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

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MPE 30 ÷ 45 T
All copying, even partial, of this manual is strictly forbiddenRG66007169 - Rev 00
1 THE MPE SERIES
1.3 COMPONENTS LAY-OUT
DESCRIPTION
1. R410A-air heat-exchanger
2. R410A-water 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 (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

MPE
12
MPE 54 ÷ 76T
All copying, even partial, of this manual is strictly forbidden RG66007169 - Rev 00
1 THE MPE SERIES
1.3 COMPONENTS LAY-OUT
DESCRIPTION
1. R410A-air heat-exchanger
2. R410A-water 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)
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

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1 THE MPE SERIES
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
PPump
RS Drain
RC Water charge
VU Check valve

MPE
14 All copying, even partial, of this manual is strictly forbidden RG66007169 - Rev 00
1 THE MPE SERIES
1.4 WATER CIRCUITS
MPE (EVAPORATOR AND BUFFER TANK)MPE (EVAPORATOR, 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
PPump
RS Drain
RC Water charge
VU Check valve

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All copying, even partial, of this manual is strictly forbiddenRG66007169 - Rev 00
2 INSPECTION, CONVEYANCE DIMENSIONAL AND SITING
2.1 INSPECTION
On receiving the unit, check that the packing is intact: the machine left the factory in perfect conditions and after thorough inspection.
Should you detect any signs of damage, immediately report them to the carrier and note them on the delivery slip.
Galletti S.p.A. must be notified of the entity of the damage within 8 days of the delivery date.
Check that the following items are present:
- starting up module,
- wiring diagram,
- warranty certificate
- make sure that this manual is intact (56 pages)
2.2 CONVEYANCE
During handling it is compulsory to check dimensions, weights, centre of gravity and anchorages. Check as well that lifting and positioning devices conform
to the current safety regulations. The unit leaves the factory screwed onto a wooden pallet, which allows it to be easily conveyed with a forklift truck.
After removing the unit 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 1½” GAS steel pipes at least 3mm
thick, to be inserted in the round holes on the base side members (see figure) and identified by means of stickers. Piping must protrude of at least 250-300
mm from each side, be slung with ropes of equal length and secured to the lifting hook (provide stops at the ends of the pipes to prevent the ropes from
slipping off due to the weight). Use ropes and belts sufficiently long to extend beyond the height of the machine and place spacer bars and boards on the
top to prevent damaging the sides and the top of the unit. In this phase, before the definitive position, vibration damping supports can be installed (optional).
Warning In all lifting operations make sure that the unit is securely anchored in order to prevent accidental falls or overturning.

MPE
16
MPE 04 ÷ 08
All copying, even partial, of this manual is strictly forbidden RG66007169 - Rev 00
2 INSPECTION, 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)

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MPE 10 ÷ 15
All copying, even partial, of this manual is strictly forbiddenRG66007169 - Rev 00
2 INSPECTION, CONVEYANCE DIMENSIONAL AND SITING
2.3 DIMENSIONAL
LEGEND
1. Water in 1" 1/4female
2. Water out 1" 1/4female
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)

MPE
18
MPE 18 ÷ 27
All copying, even partial, of this manual is strictly forbidden RG66007169 - Rev 00
2 INSPECTION, CONVEYANCE DIMENSIONAL AND SITING
2.3 DIMENSIONAL
LEGEND
1. Water in 1" 1/4female
2. Water out 1" 1/4female
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 ĭ28 mm
7. Electric control board
8. Dampers fastening points (accessory)

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MPE 28 ÷ 40 - MPE 30 ÷ 45 T
All copying, even partial, of this manual is strictly forbiddenRG66007169 - Rev 00
2 INSPECTION, CONVEYANCE DIMENSIONAL AND SITING
2.3 DIMENSIONAL
MPE 28-45 WITH BUFFER TANK
MPE 30-45 T
LEGEND
1. Water in 1" 1/4female
2. Water out 1" 1/4female
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)

MPE
20
MPE 54 ÷ 66
All copying, even partial, of this manual is strictly forbidden RG66007169 - Rev 00
2 INSPECTION, CONVEYANCE DIMENSIONAL 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)