Galletti MPE series Installation, Use And Maintenance Manual

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Page 1

MPE

4 kW - 76 kW

INSTALLATION, USE AND MAINTENANCE MANUAL

Page 2

MPE

All 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

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MPE

All 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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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

Complete Unit Code MPE009C00000000000001

Version 0

Single compressor

Ta nd em T

Model (size) 0 9

Operation

Chiller

Heat pump H

Power Supply 0

Standard 400 - 3N - 50

Single phase M

400 - 3N - 50 + thermalmagnetic 2

Single Phase + thermalmagnetic 4

Expansion Valve 0

Standard valve

Electronic expansion valve A

Pump and accessories 0

Not present

Pump - vessel - water charge valve 1

Double pump - vessel - water charge valve 2

Buffer tank 0

Not present

Present S

Heat Recover (cooling only models) 0

Not present

Present with contact for pump D

Condensing control 0

Not present

With modulating air flow C

Antifreeze kit 0

Not present

Present, standard unit E

Present, unit with pump and vessel P

Present, unit with pump, vessel and tank S

Acoustic insulation 0

Not present

Sound proofing insulation for compressor housing 1

Refrigerant circuit accessoires 0

Not present

Refrigerant gauge M

Remote control 0

Not present

RS485 port (modbus + carel protocol) 2

Simplified S

Base microprocessor remote control (modbus excluded ) M

ADVANCED microprocessor remote control X

Special coil 0

Standard

Copper / copper heat exchanger R

Cataphoresis C

“Blygold” B

Protection grille 0

Not present

Present G

Compressor options 0

Not present

Power factor correction capacitors 1

Soft starter 2

Power factor correction capacitors + soft starter

Low temperature air water pressure switch carter heater (chiller), coil cable (PDC) 4

Control panel 1

Basic microprocessor

Advanced microprocessor (not available for models 04 ~ 08) 2

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MPE

MPE 04 ÷ 08

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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

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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

MPE 18 ÷ 27

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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

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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

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

Page 12

MPE

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

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

MPE

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 ONLY FOR MPE

28-66 / 30-45T / 54-76T RANGE

ONLY FOR MPE 10-27 RANGE

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

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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 per fect 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.

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MPE

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

/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

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"

/4 female

2. Water out 1"

/4 female

3. Safety valve discharge outlet provided with rubber ring holder

4. Water supply

/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

MPE

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"

/4 female

2. Water out 1"

/4 female

3. Safety valve discharge outlet provided with rubber ring holder

4. Water supply

/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

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"

/4 female

2. Water out 1"

/4 female

3. Safety valve discharge outlet provided with rubber ring holder

4. Water supply

/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

MPE

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

/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

MPE 54 ÷ 76T

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 2" female

2. Water out 2" female

3. Drain manifold

/2" female

4. Power supply

5. Electric control board

6. Dampers fastening points (accessory)

Page 22

MPE

MPE 04 ÷ 08

All copying, even partial, of this manual is strictly forbidden RG66007169 - Rev 00

2 INSPECTION, CONVEYANCE DIMENSIONAL AND SITING

2.4 SITING

It is important to bear in mind the following aspects when choosing the best site for installing the unit:

- size and origin of water pipes;

- location of the power supply;

- solidity of the supporting surface;

- avoid obstacles to the outflow of air from the fan which could cause back suction (see section on "installation clearance requirements");

- Direction of prevalent winds: (position the unit so as to prevent prevalent winds from interfering with the fan air flow) Prevalent winds opposing the fan air flow will result in a maximum air temperature below the value indicated in the operating limits; Wind flowing in the same direction as the fan flow will result in a minimum air temperature above the value indicated in the operating limits. Even when the chiller is running in the heat pump mode, wind may have the effect of reducing the range of operation"

- avoid the possible reverberation of sound waves; do not install the unit in narrow or cramped spaces;

- ensure adequate accessibility for maintenance or repairs (see section on "installation clearance requirements").

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 clearance requirements shown in figures 1, 2 and 3. Verify that there are no obstacoles in front of the fans air outlet. Avoid any and all situations of backflow of hot air between air outlet and inlet of the unit. If even only one of the above conditions is not fulfilled, please contact the manufacturer to check for feasibility. In the design of the MPE series, special care has been taken to minimise noise and vibrations transmitted to the ground. Even greater insulation may be obtained, however, by using vibration damping base supports (available as optional accessories). If vibration damping base supports are adopted, it is strongly recommended also to use vibration damping couplings on the water pipes. Whenever the unit is to be sited on unstable ground (various types of soil, gardens, etc.) it is a good idea to provide a supporting base of adequate dimensions.

Warning

heat pump units produce condensation while operating in the heating mode.

HEAT EXCHANGER WATER CONNECTION SIDE

EXCHANGER SIDE

ELECTRICAL BOX

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2 INSPECTION, CONVEYANCE DIMENSIONAL AND SITING

2.4 SITING

2.4.1 INSTALLATION CLEARANCE REQUIREMENTS

HEAT EXCHANGER WATER 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 SIDE

Page 24

MPE

All copying, even partial, of this manual is strictly forbidden RG66007169 - Rev 00

3 PLUMBING AND ELECTRICAL CONNECTIONS

3.1 PLUMBING CONNECTION

All the units belonging to the MPE series are equipped with water differential pressure switch, safety valve, water pressure gauge and automatic filling device and emptying tap. Furthermore, depending on the version, MPE units can be supplied complete with pump, expansion vessel and buffer tank:

3.1.1 HYDRAULIC CONNECTION

Warning

While connecting the taps, hold the unit's plumbing connections tightly in place using a hexagonal wrench to prevent the pipes inside the

unit from being damaged (see figure).

3.1.2 RECOMMENDED WATER CIRCUIT

Warning

when making the plumbing connections, make sure there are no open flames in proximity to or inside the unit.

When setting up the water circuit, it is advisable to equip it with:

- valves for regulating (VI) the unit on the water pipes, immediately upstream and downstream from the unit itself, to be used in the event maintenance work is required;

- standard mechanical filter (FM) (OBLIGATORY!) on the pipe feeding 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 couplings (GA) on the pipes to prevent vibrations from being transmitted toward the system.

Important! It is advisable to ensure that the pipes connected upstream and downstream from the unit are not smaller in diameter than the plumbing connections of the unit itself.

Important! During wintertime the water circuit (or the water chiller only) must be emptied to prevent damage caused by freezing; alternatively, the circuit may be filled with a mixture of water and glycol; the percentage of glycol necessary will depend on the lowest forecast temperature (see table):

Percentage by weight Mixture freezing of ethylene glycol (%) temperature (°C)

0 0 10 -4 15 -8 20 -14 30 -18

Important! If different antifreeze product is to be used, please contact the manufacturer.

Failure to install filters and vibration dampers may cause problems of clogging, breakages and noise, for which the manufacturer may not be held liable.

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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)

Page 26

MPE

4 5

All copying, even partial, of this manual is strictly forbidden RG66007169 - Rev 00

3 PLUMBING AND ELECTRICAL CONNECTIONS

3.2 ELECTRICAL CONNECTIONS

All operations must be performed by qualified service personnel in accordance with current laws and regulations. For any electrical work on the unit, refer to the electric diagrams supplied with the unit. It is recommended to make sure that:

- The characteristics of the mains power supply are adequate for the electrical inputs specified in the table of electrical data.

Warning Before carrying out any job on electrical parts, make sure the power supply is disconnected. Check that the mains electricity supply is compatible with the specifications (voltage, number of phases, frequency) shown on the unit rating plate. The supply voltage may not undergo fluctuations exceeding ±5% of the rated voltage. The electrical connections must be made in accordance with the wiring diagram provided with the unit and the regulations in force.

Warning

Never attempt to modify internal electrical connections: any undue modifications will immediately invalidate the warranty.

Important! An all-pole circuit breaker must be used on the electric panel upstream, conform to IEC Standards (contacts must be open at least of 3

mm), with suitable interruption capacity and differential protection, according to the electrical data table described below, and installed as close as possible to the device. For the machine power supply line, use H07RN-F rubber flexible cables, with section as indicated in the table. For the cable passage, use sheaths and channels suitable for outdoor installation. Provide a line switch and delayed-type fuses with features as indicated in the table.

Important! Upstream from 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.

Important! Tighten the wires securely to the terminals and clamp the cable in place with the cable holder (figure 5).

Important! Make sure that the length of cable inside the unit enters the bushing from below: this is necessary to prevent rainwater from dripping inside

the unit.

Important! To preserve the protection degree of the machine, use a cable gland compatible with the sheath or power cable diameter, in correspondence to the unit side panel hole.

Important! An earth connection is mandatory: connect the earthing wire to the terminal provided on the electric control board (see the electric control board layout supplied with the unit ), marked

Important! If you wish to include:

- a remote on/off switch

- a remote switch for changing over between the cooling and heating mode (MPE H only),

- a remote alarm indicator it is a good idea to do so at this stage of the installation procedure, by connecting the switches or PCDS remote control (accessory) to the electric control board terminals as directed in section 3.3 and using the unit wiring diagram as your reference.

MPE 004M 005M 007M 008 M 008 010 M 010 013 015 018 020 024 027 028

Power cables mm

4 4 6 6 4 6 4 4 4 6 6 10 10 10 Safety fuse F A 16 16 20 25 10 32 16 20 20 25 25 32 32 32 Circuit breaker IL A 20 20 25 25 16 32 20 25 25 25 25 32 32 32

MPE 032 035 040 054 066 T30 T34 T40 T45 T54 T61 T69 T76

Power cables mm

10 10 10 16 16 10 16 16 16 16 16 16 25 Safety fuse F A 32 40 40 50 50 40 50 63 63 63 63 63 80 Circuit breaker IL A 40 40 50 63 63 50 50 63 63 63 63 63 80

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- The maximum input power is the mains power that must be available in order for the unit to work.

- The maximum current absorption refers to the current that will trigger the internal safety devices of the unit. It is the maximum current allowed in the unit

This value may never be exceeded; it must be used as a reference for determining the size of the power supply line and the related safety devices

(refer to the wiring diagram supplied with the units). Cross-section area of cables: 4 A/mm2 approx.

3 PLUMBING AND ELECTRICAL CONNECTIONS

3.3 ELECTRICAL DATA

MPE 004M 005M 007M 008 M 008 010 M 010 013 015 018 020 024 027 028

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 12,3 15,4 18,0 21,7 21,7 24,0 28,6 28,6

Starting absorbed current A 38 44 63 98 49 99 50 65 68 75 104 158 132 133

Fan motor rated power kW 0,135 0,135 0,135 0,135 0,135 0,135 0,135 0,135 0,135 0,135 0,135 0,135 0,135 0,320

Fan motor rated current A 0,64 0,64 0,64 0,64 0,64 0,64 0,64 0,64 0,64 0,64 0,64 0,64 0,64 1,75

Pump motor rated power kW 0,14 0,14 0,14 0,14 0,14 0,37 0,37 0,37 0,37 0,37 0,37 0,37 0,37 0,55

Pump motor rated current A 0,58 0,58 0,58 0,58 0,58 2,00 2,00 2,00 2,00 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 20,0 25,0 25,0 25,0 25,0 32,0 32,0 32,0

MPE 032 035 040 054 066 T30 T34 T40 T45 T54 T61 T69 T76

Maximum power input kW 18,9 21,8 22,4 22,7 23,3 20,9 24,4 26,6 30,8 27,0 30,0 32,0 39,0

Maximum current absorption A 32,4 35,2 36,4 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

Fan motor rated power kW 0,320 0,320 0,320 0,610 0,610 0,320 0,320 0,320 0,320 0,400 0,400 0,400 0,400

Fan motor rated current A 1,75 1,75 1,75 2,65 2,65 1,75 1,75 1,75 1,75 1,80 1,80 1,80 1,80

Pump motor rated power kW 0,55 0,55 0,55 0,90 0,90 0,55 0,55 0,55 0,55 1,30 1,30 1,30 1,30

Pump motor rated current A 3,00 3,00 3,00 4,90 4,90 3,00 3,00 3,00 3,00 5,90 5,90 5,90 5,90

Power supply V/f/Hz

Auxiliary power supply V/f/Hz

Power cables mm2 10,0 10,0 10,0 16,0 16,0 10,0 16,0 16,0 16,0 16,0 16,0 16,0 25,0

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

Safety fuse F A 32,0 40,0 40,0 50,0 50,0 40,0 50,0 63,0 63,0 63,0 63,0 63,0 80,0

Circuit breaker IL A 40,0 40,0 50,0 63,0 63,0 50,0 50,0 63,0 63,0 63,0 63,0 63,0 80,0

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MPE

-IL

-FL

L1L2

T1T2

L1 L2 L3 N

L2L3N

-FL

-IG

135

246

400

230

LNPE

150

3+N 50

STNP

-IG

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3 PLUMBING AND ELECTRICAL CONNECTIONS

3.3 ELECTRICAL DATA

DIAGRAM SHOWING ELECTRICAL CONNECTIONS BETWEEN MPE AND PCDS / PCD REMOTE 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 inter face 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 TWISTED

PCD POWER SUPPLY

ELECTRIC BOARD

TERMINAL

ELECTRIC BOARD TERMINAL

MAIN ELECTRICAL CONNECTION OF THE ONE-PHASE AND THREE-PHASE UNITS

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4 STARTING UP

THE FIRST START UP MUST BE CARRIED OUT EXCLUSIVELY BY QUALIFIED PERSONNEL AND AUTHORIZED BY GALLETTI SPA (SEE WARRANTY SHEET ATTACHED).

At first start-up of the installation make sure to comply with current national regulations.

4.1 PRELIMINARY CHECKS

When starting up the unit for the first time or after a seasonal period of quiescence, it is advisable to have the following checks performed by specialised personnel:

- Check that the electrical connections have been made properly and that all the terminals are securely tightened.

- Check that the external power supply is within +-5 % tolerance from the power supply reported on the unit identification label. If the power supply is subject to frequent voltage fluctuations, contact Galletti S.p.A. for advice on choosing suitable protections.

- Check for refrigerant leaks, with the aid of a leak detector if necessary.

- Check 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.

Warning

before starting the unit, make sure all the covering panels are in place and secured with the fastening screws provided. To start the unit,

move the main switch to on. Use the keypad of the electronic control as directed in section 3.3 to select the cooling or heating mode.

Warning

You should not disconnect the unit from the power supply during periods when it is inoperative but only when it is to be taken out of

service for a prolonged period (e.g. at the end of the season). To turn off the unit temporarily follow the directions provided in section 3.3.

Warning

do not cut off power using the main switch:

the latter device serves to disconnect the unit from the electricity supply when there is no passage of current, i.e. when the unit is already turned OFF.

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5 MICROPROCESSOR CONTROL

5.1 DESCRIPTION OF CONTROL PANEL

The control panel of the unit enables the user to display and set the unit's operating parameters and read the main operating data. In addition it indicates what mode (cooling or heating) the unit is operating in and signals any alarms that may have been triggered. Any new settings saved are stored in the card and used the next time the unit is switched on, even following a power failure.

5.1.1 REMOTE CONTROL PANELS (ACCESSORIES)

Installing a PCDS remote control panel enables you to switch the unit on and off and set the operating mode (cooling - heating) from a distance and have a cumulative alarm indicator (thanks to an alarm signalling relay integrated in the electronic 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 connection for supervisor system/tele-help.

- Setup for connection to a remote terminal that duplicates the functions of the electronic control (PCD remote control panel).

5.1.3 DEVICES CONTROLLED

- compressor

- fans

- cycle reversing valve (MPE H only);

- water circulation pump;

- antifreeze heating element (optional);

- electronic control internal alarm signalling relay (designed to control an indicator or buzzer).

5.2 USING THE CONTROL PANEL

5.2.1 DISPLAY

The display comprises 3 digits. In normal operating conditions, the value displayed corresponds to the temperature read by the "Win" sensor, i.e. the unit's inlet water temperature.

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5 MICROPROCESSOR CONTROL

5.2 USING THE CONTROL PANEL

5.2.2 INFORMATION ABOUT EQUIPMENT STATUS

Information regarding the status of the unit is provided by means of LEDs on the display.

Meaning of LEDs on the display:

5.3 SWITCHING ON AND OFF AND CHANGINGTHE OPERATING MODE

The unit may be switched on and off from the control panel installed on the unit itself. To enable remote ON-OFF switching from the PCDS or via an external switch (not supplied) connected to terminals 18-30 (normally jumpered) it is necessar y to change parameter H7) from 00 to 01. (carry out the procedure of section 5.3.4, though having access from unit –H-).

Remote ON/OFF open: unit OFF (keyboard disabled) Remote ON/OFF closed: unit ON (possibility to switch the unit ON and OFF from the keyboard)

Warning

Where remote ON-OFF switching is enabled (H7 = 01), after a power failure occurs and power is restored the unit will go into the mode indicated by the remote input without considering any changes that have been made from the unit control panel That is:

remote ON/OFF open: the unit remains Off remote ON/OFF closed: the unit starts again

5.3.1 SWITCHING THE UNIT ON AND OFF IN THE COOLING MODE

Pressing

for more than 5 seconds allows the unit to be switched on or off in the cooling mode. It is not possible to change over directly from the cooling mode to the heating mode: to do so it is necessary to select the heating 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 necessary to select the cooling mode using the PCDS remote control (accessory) or close terminal bridge 19-30 on the electric control board (see section 5.3.3).

5.3.3 CHANGING THE OPERATING MODE

The unit leaving the factory has been configured for a fast, easy connection to the PCDS remote control (accessory), which enables the user to change the operating mode and turn the unit on and off from a distance. If the unit is not equipped with this accessory, to select the operating mode it is necessary to use terminals 19-30 on the electric control board as follows:

- terminals 19-30 closed for cooling

- terminals 19-30 open for heating

Warning

Only specialised personnel may access the electric control board. Therefore, to enable the user to switch the unit on and off and change

the operating mode safely and conveniently from a distance, it is recommended to install a PCDS remote control (or remote switches outside the unit).

SIMBOL COLOR MEANING with LED ON with LED OFF

1 Amber Compressor 1 ON Start up request

Amber Compressor 1 ON

Amber Pump ON Start up request

Amber Condenser fan ON

Amber Defrost active Defrost request

Amber heater ON

Red Alarm active

Amber Chiller mode (P6=1) Chiller mode request (P6=1)

Amber Heat pump mode (P6=1) Heat pump mode request (P6=1)

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5 MICROPROCESSOR CONTROL

5.3 SWITCHING ON AND OFF AND CHANGINGTHE OPERATING MODE

5.3.4 Changing the operating mode from the keyboard on the unit.

However, it is possible to configure the electronic control in such a way to allow the operating mode to be changed simply by pressing keys on the unit itself: to this end it is necessary to change the value of the “H6” programming parameter as described below.

Warning

Do not change the values of the other parameters; this could undermine the efficiency of the unit and its safety devices.

This operation should be left in the hands of specialised personnel or a Galletti service centre.

1: Hold the “Prg” and “sel” keys pressed together for, at least, 5 s; 2: the heating and cooling simbol adn the figure “00” are displayed; 3: use the arrows to set the password 66 and confirm by pressing “sel”; 4: use the arrows to select the parameter menu (S-P) and press “sel”; 5: use the arrows to select the -H- parameter group and press “sel”; 6: use the arrows to selec the H6 parameter and press “sel” to display its value; 7: use the arrows to set the 0 value and press “sel” to confirm; 8: press “Prg” to return to the previous menu; 9: to save the modifications, press “Prg” repeatedly until reaching the main menu.

NOTE: a: The parameters that have been modified without being confirmed using the “sel” button 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 will no longer have any effect.

5.4 DISPLAY AND SETTING OF OPERATING PARAMETERS

In normal operating conditions, the display will show the temperature of the water entering the unit. Holding the "sel" key pressed for more than 5 seconds is possible to move on the parameter groups and, always with "sel", you can enter in the available parameters and values.

NB: Press "sel" to store the newly set parameters and exit the procedure; pressing "Prg" to exit without saving the changes

Warning

If no key is pressed within 60 seconds from the activation of the procedure, the control will return to the normal operating mode without

memorising any parameter changes.

5.4.1 PARAMETERS Code Description

r1 Cooling set point (may be changed); r2 Cooling set-point differential (may be changed); r3 Heating set point (may be changed); r4 Heating set-point differential (may be changed); b02 Outlet water temperature (read only); b04 Heat exchanger pressure probe (only for MPE units with condensation control or for MPE H - read only); c10 Total hours of compressor operation (read only); c15 Total hours of pump operation (read only).

5.5 REGULATION LOGIC

The graphs show the operating logic of the thermostat.

cooling mode heating mode

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5 MICROPROCESSOR CONTROL

5.6 SET POINT COMPENSATION

Operating setpoint correction depending on outdoor temperature.

COOLING ONLY UNITS

This logic, though not implemented as a standard feature in this type of unit, may be used to reduce its consumption of energy when outdoor temperatures are less hot, situations in which the demand for cooling may be assumed to be lower. This logic could adjust the setpoint in the following manner:

NB: the setpoint programmed by the user (par. r1), based on how the temperature offset configuration parameters are defined, will be used without corrections in low-demand situations. In 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 chiller will thus remain within the working range. Based on the set parameters, the winter setpoint will follow the following logic:

NB: changing any of the offset parameters in the heating mode will have the effect of changing the entire logic; any such change must thus be studied so as to avoid unit malfunctioning.

Slope par. r17

par. r19

par. r18

par. r1

15.0

12.0

30.0 35.0

outdoor temperature (°C)

SetPoint

[°C]

Slope par. r31

par. r20

par. r18

par. r3

45.0

30.0

-10.0 7.0

outdoor temperature (°C)

SetPoint

[°C]

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5 MICROPROCESSOR CONTROL

5.7 SIGNALS AND ALARMS

LIST OF INDICATIONS d1 Defrost status (MPE H only)

During the defrosting cycle, the message "d1" is displayed in turn with the inlet water temperature (Win). dF1 Defrost error (MPE H only) If the defrosting cycle ends because the maximum time has elapsed, not because the temperature threshold has been reached, the message "dF1" will

be displayed. To deactivate the message, it is necessary to carry out the alarm cancellation procedure or another successfully completed defrosting cycle.

The alarm relay is not activated.

LIST OF ALARMS

When an alarm is triggered, the alarm code is displayed alternately with the inlet temperature (Win).

HP1: High pressure

The electronic control causes the compressor to shut down immediately, the alarm relay is activated and the display starts flashing. The alarm must be manually reset.

LP1: Low pressure

The alarm causes the compressor to shut down immediately or prevents it from starting, the alarm relay is activated and the display starts flashing. The alarm must be manually reset.

FL: Water differential pressure switch

The alarm causes the pump, compressor and fan to shut down, the alarm relay is activated and the display starts flashing. The alarm is automatically reset.

A1: Antifreeze

The alarm is triggered by the evaporator outlet water temperature sensor (Wout). The alarm causes the compressor and fan to shut down immediately, the alarm 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, the display will start flashing with the digits EPb and the unit will not start. The alarm is automatically reset.

E1, E2, E4: Sensor alarms

When a sensor alarm is triggered, the compressor, fans and pump are deactivated; the alarm relay is activated and the display starts flashing.

E1 Inlet water sensor; E2 Outlet water sensor;

E4 pressure probe (only for MPE units with optional condensation control or MPE H).

The alarm is automatically reset.

ELS, EHS: Error due to high or low supply voltage

If the supply voltage is too low, the message ELS will appear; if it is too high EHS is displayed. In such conditions, the proper functioning of the unit is no longer guaranteed. If the EHS alarm is tripped, the compressor, pump and fan will be shut down. The alarm is automatically reset.

EL1: Error due to line "disturbance"

It appears if "strong noise" is present in the power supply.

5.7.1 ALARM RESET

When alarms are reset:

- the alarm relay is deactivated;

- the temperature shown on the display stops flashing;

- the alarm code will cease being displayed. In the case of automatically reset alarms, this will occur as soon as the cause of the alarm is eliminated;

In the case of manually reset alarms, it is necessary press

and together for 5 seconds.

If the cause of the malfunctioning persists, the alarm will again be signalled.

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-15

-10

-5

-6 -4 -2 0 2 4 6 8 10 12 14 16 18

Tbs

opz 1

opz 1+2

opz 1+2 opz 1+2

EEV

STD

opz 2

All copying, even partial, of this manual is strictly forbiddenRG66007169 - Rev 00

6 OPERATING LIMITS

The graphs below illustrate the operating limits of MPE units (in the case of continuous operation) in relation to the outlet water temperature and outdoor air temperature.

6.1 OPERATING LIMITS IN CHILLER MODE Tbs1 Outdoor temperature (dry bulb)

Tw 2 Outlet water temperature OPZ 1 Condensing control OPZ 2 Glycol + low temperature 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 up to 25 °C are allowed 2 Value that may be reached only for outdoor air temperatures exceeding 0°C. 3 With condensation control: Outdoor air T min -10 °C

OPERATING LIMITS CHILLER HEAT PUMP MIN MAX MIN MAX

Inlet water temperature (°C) 8 20

25 42

Outlet water temperature (°C) 5 15 28 53

Thermal differential of water (°C) 3 8 3 8 Outdoor air temperature (°C) 153 45 -10 20

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MPE

-15 -10 -5 0 5 10 15 20 25 30 35 40

Temperatura Aria esterna

F08 = 10 F09 = 2 F03 = 20

EEV GAIN 5 int time 100

EEV + CC

OUTDOOR AIR TEMPERATURE

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6 OPERATING LIMITS

6.2 OPERATING LIMITS IN HEAT PUMP MODE RH Relative humidity of outdoor air

Tbs1 Outdoor temperature (dry bulb) Tw 2 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.

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7 CONTROL AND SAFETY DEVICES

All the control and safety devices are set and tested in the factory before the unit is dispatched.

7.1 CONTROL DEVICES

7.1.1 SERVICE THERMOSTAT

The service thermostat activates and deactivates the compressor according to the demand for chilled water (cooling mode) or heated water (heat pump mode), as determined by a sensor installed on the water exchanger inlet. This device is governed by the microprocessor control (see also the chapter regarding the microprocessor).

7.1.2 CONTROL DEVICE SETTINGS

Control devices Set point min max differenzial

Service thermostat °C 11,5 8 20 2 (outlet water temp. cooling mode) Service thermostat °C 45 25 47 3 (outlet water temp. heat pump mode)

7.2 SAFETY DEVICES

7.2.1 HIGH PRESSURE SWITCH

The high pressure switch stops the compressor when the delivery pressure exceeds the set value.

7.2.2 REFRIGERANT CIRCUIT SAFETY VALVE (NOT AVAILABLE FOR MPE 09-15)

The safety valve is triggered in the event of a malfunctioning of the high pressure switch or in case of fire.

Warning

The safety valve is situated in the compressor compartment inside the unit. Never attempt to access internal components of the unit

until you have disconnected the power supply.

7.2.3 LOW PRESSURE SWITCH

The low pressure 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 ANTIFREEZE THERMOSTAT

The antifreeze thermostat situated at the evaporator outlet performs a dual function: it prevents ice from forming in the evaporator in the event of an

excessive decrease in the water flow; it stops the unit in the event of a failure of the service thermostat.

This device is governed by the microprocessor control (see also the chapter regarding the microprocessor).

7.2.6 WATER DIFFERENTIAL PRESSURE SWITCH

The water differential pressure switch stops the unit in the event of an excessive reduction in the water flow, thus protecting it from the formation of ice

(chiller operation) and excessively high condensation temperatures (heat pump operation)

7.2.7 WATER SAFETY VALVE

The water safety valve opens when the pressure within the water circuit reaches a level that may cause damage to the unit.

7.2.8 SAFETY DEVICE SETTINGS

Safety device activation differential resetting

Maximum pressure switch (bars) 42 Automatic Refrigerant safety valve (bars) 45 Minimum pressure switch (bars) 2 Automatic Antifreeze thermostat (°C) 3 3 Manual Water differential pressure switch (bars) 0,050 0 Automatic Water safety valve (bars) 4

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8 ROUTINE MAINTENANCE AND CHECKS

It is recommended to carry out periodic checks of the safety devices (pressure switches and safety valves) and verify the absence of refrigerant leaks. After the first start-up, the periodic checks must be carried out in conformity with the schedule and the manners provided for by current national regulations. To keep the unit in good working order and guarantee the expected levels of performance and safety, it is necessary to carry out some periodic routine checks: some may be performed directly by the user while others must be carried out solely by specialised personnel.

8.1 CHECKS TO BE PERFORMED BY THE USER

The checks and operations described in this section may be easily performed by the user, provided that the latter shows a minimum of attention.

- Remove any dirt that has built up around the coil or objects trapped in the mesh protecting the coil itself (leaves, paper etc., to be carried out monthly).

Warning

Be especially careful when working in proximity to finned coils since the aluminium fins are extremely sharp and can cause cuts.

- Check the level of water in the circuit using the water pressure gauge, which should indicate a pressure of about 1.5 bars (monthly).

- Check that the escape pipe of the water safety valve is tightly secured.

- Check the water circuit for leaks (monthly).

- If the unit is to remain out of service for a long time, drain the water (or other fluid present in the circuit) from the pipes and the unit itself. This is indispensable if during the period of quiescence the ambient temperature is expected to fall below the freezing point of the fluid used (seasonal

operation). Drain the unit and parts of the circuit subject to the risk of freezing by opening the RS (optional) emptying tap. Before placing the unit back in service at the start of the season, refill the water circuit as directed in section 1.4

- Check that the noise emissions of the unit are regular (monthly).

- If necessary, release the pump rotor ("P" and "S" version)

8.2 CHECKS AND MAINTENANCE TO BE PERFORMED BY SPECIALISED PERSONNEL

Warnings

Important! All the operations described in this section MUST ALWAYS BE PERFORMED BY QUALIFIED PERSONNEL.

Warning

Before carrying out any work on the unit or accessing internal par ts, 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 working in proximity to the finned coils: the aluminium fins are extremely sharp and can cause cuts.

Important! After completing maintenance jobs, always replace the panels enclosing the unit and secure them with the fastening screws provided.

The checks and operations described in this section must be carried out on a yearly basis by specialised personnel.

- Check the electric control board terminals to ensure that they are securely tightened: the movable and fixed contacts of the circuit breakers must be

periodically cleaned and replaced whenever they show signs of deterioration.

- Check the compressor and pipes for oil leaks.

- Check the efficiency of the water differential pressure switch.

- Clean the metal filters mounted in the water pipes.

- Clean the finned coil by aiming a jet of compressed air in a direction opposite to the outflow of air, taking care not to bend the fins.

9 RETIRING THE UNIT

When the unit has reached the end of its working life and needs to removed and replaced, a series of operations should be carried out:

- the refrigerant gas it contains should be recovered by specialised personnel and sent to a waste collection facility;

- the lubricating oil in the compressor should also be recovered by specialised personnel and sent to a waste collection facility;

- if they cannot be reused, the framework and components should be scrapped and separated according to the type of material: this applies especially

for the considerable quantities of copper, aluminium and steel present in the unit.

This will make the job of waste collection, disposal and recycling facilities easier and minimise the environmental impact of the dismantling.

Installation and maintenance should be carried out by technical personnel qualified for this type of machine, in compliance with current safety regulations.

When receiving the unit please check its state verifying if any damage occurred during the transport. For installation and use of possible accessories please refer to the pertinent technical sheets.

Page 39

All copying, even partial, of this manual is strictly forbiddenRG66007169 - Rev 00

10 TECHNICAL FEATURES

10.1 WATER CHILLERS RATED TECHNICAL DATA

* Weights referred to version including pump and buffer tank

- Cooling capacity: outdoor air temperature 35°C, water temperature 12°C / 7°C

- Sound power level measured according to standards ISO 3741 - ISO 3744 and EN 29614-1

- Sound pressure level measured at a distance of 10 m and a height of 1.5 m above the ground in a free field (fan side).

- The maximum electrical input is the mains electricity that must be available in order for the unit to work.

- The maximum current absorption refers to the current that will trigger the internal safety devices of the unit. It is the maximum current allowed in the unit. This value may never be exceeded; it must

be used as a reference for determining the size of the power supply line and the related safety devices (refer to the wiring diagram supplied with the units).

MPE-C 004 M 005 M 007 M 008 M 008 010 M 010 013 015 018 020 024 027 028

Power supply V-ph-Hz 230-1-50 230-1-50 230-1-50 230-1-50 400-3-50 230-1-50 400-3-50 400-3-50 400-3-50 400-3-50 400-3-50 400-3-50 400-3-50 400-3-50

Cooling capacity kW 4,1 5,1 6,7 8,4 8,4 9,3 9,3 12,9 15,0 17,2 19,6 23,8 26,6 28,1

MPE CB Total power input kW 1,3 1,7 2,3 3,3 3,1 3,2 3,2 4,2 5,2 6,3 7,1 8,1 9,3 8,7

EER 3,1 3,0 3,0 2,5 2,7 2,9 2,9 3,1 2,9 2,7 2,8 2,9 2,9 3,2

ESEER 3,5 3,4 3,3 3,0 3,4 3,4 3,4 3,7 3,5 3,3 3,2 3,4 3,4 3,8

MPE CP CS Total power input kW 1,5 1,8 2,4 3,5 3,2 3,6 3,6 4,5 5,5 6,7 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 2,9 2,9 4,0 4,1 3,7 4,2 5,8 6,0 7,5

Low/high pressure switch bar 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42

n° of axial fan 11111222244442

Air flow m3/h 3.635 3.635 3.406 3.406 3.406 7.385 7.385 6.939 6.939 9.990 9.990 9.307 9.307 16.276

Water flow l/h 707 877 1.146 1.445 1.445 1.591 1.591 2.219 2.577 2.958 3.373 4.094 4.575 4.833

Diameter of hydrualic connections pollici111111 1/41 1/41 1/41 1/41 1/41 1/41 1/41 1/41 1/4

Water side pressure drop kPa 24666343461385151493440

Available pressure head kPa 63 61 57 53 53 116 116 83 103 129 123 116 124 143

Water content escluding optionals dm3 1,5 1,5 1,5 1,5 1,5 3,0 3,0 3,0 3,0 4,0 4,0 4,0 4,0 5,5

Expansion tank dm311111555555558

Buffer tank dm3 20 20 20 20 20 30 30 30 30 50 50 50 50 125

Height mm 758 758 758 758 758 1250 1250 1250 1250 1300 1300 1300 1300 1485

Length mm 960 960 960 960 960 1220 1220 1220 1220 1565 1565 1565 1565 1990

Depth mm 450 450 450 450 450 560 560 560 560 600 600 600 600 950

Sound power level dB(A) 66 66 67

67 67 69 69 69 69 71 71 72 72 73

Sound pressure level dB(A) 38 38 39 39 39 41 41 41 41 43 43 44 44 45

Transport weight * kg 98 100 107 110 110 202 202 209 209 260 260 280 285 370

Operating weight * kg 92 94 101 104 104 228 228 235 235 306 296 327 332 492

Page 40

MPE

All copying, even partial, of this manual is strictly forbidden RG66007169 - Rev 00

* Weights referred to version including pump and buffer tank

- Cooling capacity: outdoor air temperature 35°C, water temperature 12°C / 7°C

- Sound power level measured according to standards ISO 3741 - ISO 3744 and EN 29614-1

- Sound pressure level measured at a distance of 10 m and a height of 1.5 m above the ground in a free field (fan side).

- The maximum electrical input is the mains electricity that must be available in order for the unit to work.

be used as a reference for determining the size of the power supply line and the related safety devices (refer to the wiring diagram supplied with the units).

10 TECHNICAL FEATURES

10.1 WATER CHILLERS RATED TECHNICAL DATA

MPE-C 032 035 040 054 066 T30 T34 T40 T45 T54 T61 T69 T76

Power supply V-ph-Hz 400-3-50 400-3-50 400-3-50 400-3-50 400-3-50 400-3-50 400-3-50 400-3-50 400-3-50 400-3N-50 400-3N-50 400-3N-50 400-3N-50

Cooling capacity kW 31,5 35,0 39,7 51,4 66,1 30,0 34,1 39,6 44,6 54,6 61,9 69,8 76,1

MPE CB Total power input kW 10,1 11,5 12,8 17,8 24,1 10,4 12,6 13,6 16,4 18,3 21,2 23,6 27,5

EER 3,1 3,0 3,1 3,0 2,7 2,9 2,7 2,9 2,7 3,0 2,9 3,0 2,8

ESEER 3,6 3,6 3,7 3,6 3,3 4,2 4,1 4,1 4,0 4,0 4,0 4,2 4,2

MPE CP CS Total power input kW 10,6 12,1 13,3 18,7 25,0 11,0 13,1 14,2 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 13 15,0 7,8 7,8 10,9 10,9 11,0 11,0 16,0 16,0

Low/high pressure switch bar 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42

n° of axial fan 22222 22224444

Air flow m3/h 16.276 16.276 15.776 20000 20000 16.276 16.276 15.776 15.776 24930 24930 24354 24354

Water flow l/h 5.421 6.021 6.823 9305 11376 5.160 5.857 6.806 7.663 9391 10647 12006 13089

Diameter of hydrualic connections pollici 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 2 2 2 2

Water side pressure drop kPa 51 41 43 60 60 30,01 38 45 57 56 69 55 64

Available pressure head kPa 126 130 119 110 95 150 134 117 97 138 120 128 114

Water content escluding optionals dm3 5,5 5,5 5,5 7 8 5,5 5,5 5,5 5,5 7 8 11 12

Expansion tank dm388888 88888888

Buffer tank dm3 125 125 125 125 125 125 125 125 125 125 125 125 125

Height mm 1485 1485 1485 1485 1485 1485 1485 1485 1485 1735 1735 1735 1735

Length mm 1990 1990 1990 1990 1990 1990 1990 1990 1990 2091 2091 2091 2091

Depth mm 950 950 950 950 950 950 950 950 950 1183 1183 1183 1183

Sound power level dB(A) 73 73 75 78 78 72 72 72 72 81 81 81 81

Sound pressure level dB(A) 45 45 47 50 50 44 44 44 44 53 53 53 53

Transport weight * kg 370 390 390 500 530 410 410 430 430 557 692 692 786

Operating weight * kg 492 513 513 620 650 532 533 553 553 665 800 800 894

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All copying, even partial, of this manual is strictly forbiddenRG66007169 - Rev 00

10 TECHNICAL FEATURES

10.2 HEAT PUMPS RATED TECHNICAL DATA

* Weights referred to version including pump and buffer tank

- Cooling capacity: outdoor air temperature 35°C, water temperature 12°C / 7°C

- Heating capacity: outdoor air temperature 7°C dry bulb and 6.2°C wet bulb, water temperature 40°C/45°C

- Sound power level measured according to standards ISO 3741 - ISO 3744 and EN 29614-1

- Sound pressure level measured at a distance of 10 m and a height of 1.5 m above the ground in a free field (fan side).

- The maximum electrical input is the mains electricity that must be available in order for the unit to work.

- The maximum current absorption refers to the current that will trigger the internal safety devices of the unit. It is the maximum current allowed in the unit. This value may never be exceeded; it

must be used as a reference for determining the size of the power supply line and the related safety devices (refer to the wiring diagram supplied with the units).

MPE-H 004 M 005 M 007 M 008 M 008 010 M 010 013 015 018 020 024 027 028

Power supply V-ph-Hz 230-1-50 230-1-50 230-1-50 230-1-50 400-3-50 230-1-50 400-3-50 400-3-50 400-3-50 400-3-50 400-3-50 400-3-50 400-3-50 400-3-50

Cooling capacity kW 4,0 5,0 6,5 8,2 8,2 9,1 9,1 12,6 14,7 16,9 19,2 23,3 26,1 27,5

MPE HB Cooling power input kW 1,3 1,7 2,3 3,3 3,1 3,2 3,2 4,2 5,2 6,3 7,1 8,1 9,3 8,7

EER 3,0 2,9 2,9 2,5 2,7 2,8 2,8 3,0 2,8 2,7 2,7 2,9 2,8 3,2

ESEER 3,5 3,3 3,3 2,9 3,3 3,3 3,3 3,6 3,5 3,2 3,2 3,4 3,3 3,7

MPE HP - HS Cooling power input kW 1,5 1,8 2,4 3,5 3,2 3,6 3,6 4,5 5,5 6,7 7,5 8,5 9,7 9,2

Heating capacity kW 4,7 5,9 7,8 10,2 9,9 10,9 10,9 15,1 17,6 20,0 23,0 27,2 30,0 31,4

MPE HB Heating power input kW 1,5 1,8 2,4 3,6 3,2 3,6 3,6 4,7 5,5 6,6 7,2 8,1 8,9 9,1

COP 3,2 3,2 3,2 2,8 3,1 3,0 3,0 3,2 3,2 3,0 3,2 3,3 3,4 3,4

MPE HP - HS 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 / 1 1 / 1 1 / 1 1 / 1 1 / 1

Refrigerant charge kg 1,47 1,48 2,04 2,09 2,09 2,87 2,87 3,99 4,11 3,67 4,23 5,8 6,0 7,5

Low/high pressure switch bar 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42 2 / 42

n° of axial fan 11111222244442

Air flow m3/h 3.635 3.635 3.406 3.406 3.406 7.385 7.385 6.939 6.939 9.990 9.990 9.307 9.307 16.276

Water flow in cooling mode l/h 707 877 1.146 1.445 1.445 1.591 1.591 2.219 2.577 2.958 3.373 4.094 4.575 4.833

Water flow in heat pump l/h 811 1.008 1.337 1.755 1.711 1.869 1.869 2.595 3.027 3.445 3.949 4.670 5.156 5.396

Diameter of hydrualic connections “ 1 1 1 1 1 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4

Water pressure drop (cooling) kPa 2 4 6 6 6 34 34 61 38 51 51 49 34 40

Water pressure drop (heating) kPa 3 4 8 8 8 45 45 83 51 69 69 62 43 49

Available pressure head (cooling) kPa 63 61 57 53 53 116 116 83 103 129 123 116 124 143

Available pressure head (heating) kPa 62 59 53 48

48 102 102 57 86 104 97 95 107 128

Water content escluding optionals dm3 1,5 1,5 1,5 1,5 1,5 3,0 3,0 3,0 3,0 4,0 4,0 4,0 4,0 5,5

Expansion tank dm311111555555558

Buffer tank dm3 n.d. n.d. n.d. n.d. n.d. 30 30 30 30 50 50 50 50 125

Height mm 758 758 758 758 758 1250 1250 1250 1250 1300 1300 1300 1300 1485

Length mm 960 960 960 960 960 1220 1220 1220 1220 1565 1565 1565 1565 1990

Depth mm 450 450 450 450 450 560 560 560 560 600 600 600 600 950

Sound power level dB(A) 66 66 67 67 67 69 69 69 69 71 71 72 72 73

Sound pressure level dB(A) 38 38 39 39 39 41 41 41 41 43 43 44 44 45

Transport weight * kg

103 105 112 115 115 212 212 219 220 273 273 295 300 400

Operating weight * kg

97 99 106 109 109 238 238 245 246 319 309 342 347 522

Page 42