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InstallatIon, use and maIntenance manual
WRE
chillers and heat pumps
40 k W - 7 50 kW
Erp 2021
Scroll compressor
Refrigerant
Cooling only
Heating/Cooling
R-410A
PLUS
» Electronic expansion valve
» Up to 6 compressors
» 1 or 2 cooling circuits
» Remote connectivity with the most common protocols
» Compact dimensions
» 3 different acoustic configurations
» High seasonal efficiency values
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Summary of Contents for Galletti WRE 052
- Page 1 InstallatIon, use and maIntenance manual chillers and heat pumps 40 k W - 7 50 kW Erp 2021 Scroll compressor Refrigerant Cooling only Heating/Cooling R-410A PLUS » Electronic expansion valve » Up to 6 compressors » 1 or 2 cooling circuits »...
- Page 2 Dear Customer, Thank you for placing your trust in one of the products of Galletti S.p.a This product is the result of our work and our commitment to design, research, and production and has been made from the finest materials, employing state-of-the-art components and production technology.
- Page 3 By en- ranty. suring this product is disposed of correctly, you will help Ū Galletti S.p.A. shall not accept any liability for injury or to prevent potential negative consequences for the envi- damage resulting from improper use of the equipment ronment and human health.
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Page 4: Table Of Contents
TABLE OF CONTENTS WRE SERIE PLUMBING AND ELECTRICAL p 5 CONNECTIONS p 32 FIELD OF APPLICATION p 5... -
Page 5: Wre Serie
WRE SERIE FIELD OF APPLICATION WRE series water chillers and water-cooled monobloc reversi- ble heat pumps are designed for heating or cooling water for residential and commercial air-conditioning systems as well as industrial process applications. The units are intended to be installed in technical compart- ments, in a position accessible to authorised personnel. -
Page 6: 13 Models And Versions P
The WRE series consists of 27 models with cooling capacities others forbidden or make some selection (fields) mandatory. ranging from 46 to 740 kW, available in cooling only or revers- Please contact Galletti S.p.A. for verification. ible heat pump versions. All models are charged with R410A Configuration options... -
Page 7: Main Components P
MAIN COMPONENTS management of the splitting of the water flow both on the source side and on the equipment side. Structure Galvanised steel sheet structure treated with a polyester powder coating suitable for indoor applications. On request the unit can be supplied complete with easily remov- able containment panels to greatly simplify all maintenance and inspection operations. -
Page 8: Inspection, Conveyance Dimensional And Siting
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 with- in 8 days of the delivery date. Check that the following items are present: Ū... -
Page 9: 23 Siting And Dampers P
» Lifting points frame 2 » Lifting points frame 5 SITING AND DAMPERS It is important to bear in mind the following aspects when choosing the best site for installing the unit: Ū Size and origin of water pipes; Ū Location of the power supply; Ū... -
Page 10: Installation Clearance Requirements
» Dampers components INSTALLATION CLEARANCE REQUIREMENTS AND DIMENSIONAL To ensure the proper operation of the unit and accessibili- ty for maintenance purposes, it is necessary to comply with the minimum installation clearance requirements shown in figures p. 11, p. 12, p. 13, p. 14, p. 15, p. 16, p. 17. WARNING: These clearances must be considered the min- imum necessary for proper routine maintenance. - Page 11 » WRE 52 - 92 RG66018063-06 All copying, even partial, of this manual is strictly forbidden...
- Page 12 » WRE 122 - 152 INSTALLATION, USE AND MAINTENANCE MANUAL...
- Page 13 » WRE 182 - 242 RG66018063-06 All copying, even partial, of this manual is strictly forbidden...
- Page 14 » WRE 154-274; 302 INSTALLATION, USE AND MAINTENANCE MANUAL...
- Page 15 » WRE 314 - 384 RG66018063-06 All copying, even partial, of this manual is strictly forbidden...
- Page 16 » WRE 454 - 564 INSTALLATION, USE AND MAINTENANCE MANUAL...
- Page 17 » WRE 606 - 746 RG66018063-06 All copying, even partial, of this manual is strictly forbidden...
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Page 18: Weights
WEIGHTS This drawing shows the points of the machine for which weights have been calculated, with respect to the basic chiller and heat pump model. The weights are shown in the tables below. » WRE Frame 1 » WRE Frame 2 »... - Page 19 » WRE Frame 5 » Lifting center of gravity for transporting unit C version without hydraulic options 1526 1507 1488 1376 1392 1415 1560 1551 1560 1545 » Lifting center of gravity for transporting unit H version without hydraulic options 1521 1502 1484...
- Page 20 Total 1491 1523 1925 1968 2035 2592 2689 2648 2752 » Operating weight H version without hydraulic options Total Total 1014 1012 1121 1141 1425 Total 1523 1555 1959 2008 2075 2669 2775 2734 2838 INSTALLATION, USE AND MAINTENANCE MANUAL...
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Page 21: Technical Features
TECHNICAL FEATURES RATED TECHNICAL DATA OF WRE C WATER CHILLERS Power supply V-ph-Hz 400 - 3N - 50 Cooling capacity (1)(E) 47,1 59,0 68,5 80,5 92,6 Total power input (1)(E) 11,0 13,8 16,1 18,8 21,7 27,7 31,4 (1)(E) 4,26 4,26 4,26 4,28 4,27... - Page 22 Power supply V-ph-Hz 400 - 3N - 50 Cooling capacity (1)(E) Total power input (1)(E) 54,7 62,3 66,8 71,4 82,1 88,0 93,7 (1)(E) 4,35 4,35 4,48 4,40 4,41 4,40 4,88 SEER (2)(E) 5,96 5,91 5,55 6,22 6,19 5,92 6,50 Water flow user side 40957 46553 51448...
- Page 23 RATED TECHNICAL DATA OF WRE H REVERSIBLE HEAT PUMPS Power supply V-ph-Hz 400 - 3N - 50 Cooling capacity 47,1 58,9 68,5 80,5 92,6 Total power input 11,1 13,8 16,1 18,9 21,7 27,7 31,4 4,25 4,26 4,26 4,27 4,26 4,30 4,31 SEER 5,48...
- Page 24 Power supply V-ph-Hz 400 - 3N - 50 Cooling capacity Total power input 36,2 35,0 41,0 42,6 48,4 48,9 53,3 4,31 4,24 4,43 4,34 4,44 4,38 4,51 SEER 5,80 5,30 5,83 6,31 5,60 5,95 5,53 Water flow user side 26895 25545 31235 31789...
- Page 25 Power supply V-ph-Hz 400 - 3N - 50 Cooling capacity Total power input 54,7 62,3 66,8 71,4 82,1 88,0 93,7 4,35 4,35 4,48 4,40 4,41 4,40 4,88 SEER 5,96 5,91 5,55 6,22 6,19 5,92 6,50 Water flow user side 40958 46550 51446 54007...
- Page 26 Power supply V-ph-Hz 400 - 3N - 50 Cooling capacity Total power input 4,91 4,80 4,69 4,65 4,70 4,74 SEER 6,56 6,52 6,56 6,51 6,53 6,57 Water flow user side 87721 97016 102424 110464 119601 128286 Water pressure drop user side Water flow source side 104931 116374...
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Page 27: Microprocessor Control
MICROPROCESSOR CONTROL Below are specified the microprocessor control functions in the The advanced control instructios are described in service basic version. manual. » pGD1 DESCRIPTION OF CONTROL PANEL temperature as well as the notifications relating to the active components and current alarms. The unit's control panel allows you to display and set the unit's operating parameters and read the main operating data. -
Page 28: Switching On And Off And Changing
Remote ON-OFF open: unit OFF (keyboard disabled) SYMBOL MEANING Remote ON-OFF closed: unit ON (possibility to switch the unit 1) Event notification area ON and OFF from the keyboard) Water valve opening/closing WARNING Where remote ON-OFF switching is enabled, after a power failure occurs and power is restored the unit Cycle reversing valve opening/closing will go into the mode indicated by the remote input without considering any changes that have been made from the unit... -
Page 29: Info Menu
Ū Manufacturer's menu (password private) LOCKING alarm that by default has an activation delay of 0 sec- onds (manual reset) with the following effects: Ū Key «alarm» switched on with red LED, as all alarms Ū Total unit swithing off Ū... -
Page 30: Antifreeze (Heating Element) Protection Management
5.5.8 Antifreeze (heating element) protection (certainly not in tandem configurations), otherwise the temper- management ature control would be unstable. INDIRECT OUTLET REGULATION GOT WITH MODULATING Antifreeze protection is provided by two devices: the pump and PUMP antifreeze heating elements. In this case, the main regulation of the unit (the one that turns These two devices are regulated on the basis of two parameters: the compressors on and off ) is carried out in the conventional outdoor air temperature and outlet water temperature. -
Page 31: Start-Up
The first start up must be carried out exclusively by qualified filter) without starting the compressors in any case. Perform personnel and authorized by Galletti S.p.A. (see warranty this operation for a sufficient time to allow the water to cir- sheet attached). -
Page 32: Plumbing And Electrical Connections
PLUMBING AND ELECTRICAL CONNECTIONS PLUMBING CONNECTION air before starting the pump for the first time. WARNING Failure to use anti-freezing solutions may cause All units in the WRE series are equipped with water flow switch, seriousdamage to the hydraulic/cooling circuit in general. manual vent valve, and water pressure gauge. - Page 33 used in the event maintenance work is required; Percentage by weight of ethylene glycol Mixture freezing temperature (°C) Ū standard mechanical filter (FM) (OBLIGATORY!) on the pipe feeding the unit, in proximity to the latter; Ū standard mechanical filter (FM) (OBLIGATORY!) and check valve (VNR), on the supply line upstream from the filling tap (RC);...
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Page 34: Filling The System
» Recommended water circuit - version H, evaporator (C) and condenser (D) connections LEGEND Pressure gauge (not supplied) Vibration-damping coupling (not supplied) Shut-off valve (not supplied) Mechanical filter (MANDATORY) 7.1.3 Filling the system » Flussostat connection Ū Before you start filling, make sure that the system draining tap is closed. - Page 35 An all-pole circuit breaker must be used on the electric panel gland compatible with the sheath or power cable diameter, in upstream, conform to IEC Standards (contacts must be open correspondence to the unit side panel hole. at least of 3 mm), with suitable interruption capacity and dif- An earth connection is mandatory: connect the earthing ferential protection, according to the electrical data tables wire to the terminal provided on the electric control board...
- Page 36 » Main electrical connection of units INSTALLATION, USE AND MAINTENANCE MANUAL...
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Page 37: 74 Water Circuit P
WATER CIRCUIT » WRE (evaporator) LEGEND Evaporator Water filter (included) Flow switch 10 Antifreeze electric heating Pressure gauge ------ Internal and external borderline ——— OPTIONAL RG66018063-06 All copying, even partial, of this manual is strictly forbidden... -
Page 38: Operating Limits
5 K at full the operating limits, even under conditions of load regula- load. tion and splitting of the unit. If in doubt, contact the Galletti WARNING: except for special requests, which can be man- product support department. -
Page 39: 81 Operating Limits For Wre C P
OPERATING LIMITS FOR WRE H » WRE H operating range - cooling mode OPT 1 Glycol T out U Outlet water temperature (user) T out S Outlet water temperature (source) RG66018063-06 All copying, even partial, of this manual is strictly forbidden... -
Page 40: 83 Thermal Carrying Fluid P
» WRE H operating range - heating mode T out U Outlet water temperature (user) T out S Outlet water temperature (source) Part load in this area of the envelope the unit can enter the prevent mode, with temporary disconnection of a compressor in order to prevent high-pressure alarms as much as possible, thereby keeping the unit operating uninterruptedly. -
Page 41: Control And Safety Devices
CONTROL AND SAFETY DEVICES All the control and safety devices are set and tested in the factory before the unit is dispatched. CONTROL DEVICES pressure falls below the set value. 9.2.4 Low pressure safety valve 9.1.1 Service thermostat . Available only in some sizes, it limits the compressors intake The service thermostat activates and deactivates the compres- pressure to a value in line with the stated PED class of the sor according to the demand for chilled water (cooling mode) -
Page 42: Routine Maintenance And Checks
10 ROUTINE MAINTENANCE AND CHECKS CAUTION: It is recommended to carry out periodic checks of the safety Installation and maintenance activities per- devices (pressure switches and safety valves) and verify the ab- formed on units may only be carried out by personnel and sence of refrigerant leaks. -
Page 43: Cooling Circuits
11 COOLING CIRCUITS » Legend COMPONENT SYMBOL Compressor Evaporator/Condenser Filter Sight glass High pressure switch (HP) Low pressure switch (LP) Service connection Check valve 4 Way diversion valve Pressure transducer De-superheater Shut-Off valve Safety valve Flow switch Electronic expansion valve RG66018063-06 All copying, even partial, of this manual is strictly forbidden... - Page 44 » Single-circuit WRE C cooling circuit diagram A. available in sizes 92, 122, 184, 214, and 244 B. available in sizes 152, 162, 182, 212, 242, 302, 314, 364, 384, 454, 504, 564, 606, 636, 696, and 746 C. available in sizes 302 and 564 INSTALLATION, USE AND MAINTENANCE MANUAL...
- Page 45 » Single-circuit WRE H cooling circuit diagram A. available in sizes 92, 122, 184, 214, and 244 B. available in sizes 152, 162, 182, 212, 242, 302, 314, 364, 384, 454, 504, 564, 606, 636, 696, and 746 C. available in sizes 302 and 564 RG66018063-06 All copying, even partial, of this manual is strictly forbidden...
- Page 46 » Dual-circuit WRE heat pump cooling circuit diagram A. available in sizes 92, 122, 184, 214, and 244 B. available in sizes 152, 162, 182, 212, 242, 302, 314, 364, 384, 454, 504, 564, 606, 636, 696, and 746 C. available in sizes 302 and 564 INSTALLATION, USE AND MAINTENANCE MANUAL...
- Page 47 » Dual-circuit WRE chiller cooling circuit diagram A. available in sizes 92, 122, 184, 214, and 244 B. available in sizes 152, 162, 182, 212, 242, 302, 314, 364, 384, 454, 504, 564, 606, 636, 696, and 746 C. available in sizes 302 and 564 RG66018063-06 All copying, even partial, of this manual is strictly forbidden...
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Page 48: Troubleshooting
Operations marked with the letter "S" may be performed exclusively by specialised personnel. Once the cause has been identified, you are advised to contact a Galletti S.p.A. service centre or a qualified technician for help. - Page 49 Who can take corrective action Possible control panel SYMPTOM U = User Probable cause Possible remedy indication S = specialised personnel Pressure switch failure Check and replace Unit completely empty See item G Water circulation pump Release the pump blocked The compressor Water circulation pump does not start...
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Page 50: Retiring The Unit
13 RETIRING THE UNIT When the unit has reached the end of its working life and needs to be removed and replaced, a series of operations should be carried out: In particular, the disposal of the unit should be car- ried out solely by qualified technicians specifically trained for this type of equipment, in conformity with current regulations. - Page 52 Romagnoli 12/a 40010 Bentivoglio (BO) - Italy Galletti S.p.A Organization has a Ph. +39 051/8908111 - Fax +039 051/8908122 Management System Certified by Kiwa Cermet Italia S.p.A, according to the UNI EN ISO 9001:2015, UNI EN ISO 14001:2015 and UNI ISO www.galletti.com...
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