TECHNOLOGY AND EFFICIENCY · EUROVENT / CERTIFIED PERFORMANCE Like the entire Galletti product...

HIGH EFFICIENCY AIR CHILLERS AND

HEAT PUMPS 50-380 KW

TECHNOLOGY AND EFFICIENCY 365 DAYS A YEAR

INTRODUCTION2

-20% -20%+20%2020 PACKAGE

The European Union, with the 20/20/20 Package, has initiated strategic planning to ensure the

achievement of speci�c climate and energy targets by 2020, when Member States will be bound

to respect three main objectives:

To reduce greenhouse

gas emissions

resulting from energy

consumption by 20%

compared to 1990

levels.

To reach a

percentage of 20%

of energy from

renewable sources

out of the total

energy consumed.

To reduce

�nal energy

consumption by

20% relative to

the projections

for 2020.

EU ERP DIRECTIVE 2009/125/EC

THE CURRENT SCENARIO

THE ERP DIRECTIVE STRONGLY AFFECTS

THE GALLETTI DESIGN, IN LINE WITH A

CONTINUOUS SEARCH FOR EXCELLENCE ErP

ENERGY RELATEDPRODUCTS

To achieve these goals, the EU has adopted the ErP Directive

2009/125/CE (Energy-related Products), which regulates the eco-

design requirements for all energy-using products.

The minimum seasonal energy e�ciency requirements for heat

pumps and chillers up to 2 MW of power are shown below:

EUROVENT / CERTIFIED PERFORMANCELike the entire Galletti product catalog, also V-IPER possesses Eurovent certi�cation.

Eurovent Certi�cation certi�es the operating performance of equipment in the �eld of air handling,

air conditioning, and refrigeration according to European and international standards. The goal is to

strengthen customer con�dence through a common platform for all manufacturers and increase the

integrity and accuracy of industrial assessments.

GALLETTI PRODUCTS UNDER THE EUROVENT BRAND

- Hydronic indoor units

- Air-cooled heat pumps and chillers

- Water-cooled heat pumps and chillers

- Multi-purpose with total energy recovery

SCOP AIR-WATER WATER-WATERHEAT PUMPS AND COMBINED HEAT PUMPS WITH COOLING CAPACITY < 400 2.83 2.95LOW-TEMPERATURE HEAT PUMPS WITH COOLING CAPACITY < 400 3.20 3.33

SEER AIR-WATER WATER-WATERCHILLER WITH COOLING CAPACITY < 400 KW 3.80 5.10REVERSIBLE HEAT PUMPS AND CHILLERS WITH 400 ≤ COOLING CAPACITY < 1500 KW 4.10 5.88REVERSIBLE HEAT PUMPS AND CHILLERS WITH 1500 ≤ COOLING CAPACITY < 2000 KW 4.10 6.33

INTRODUCTION 3

V-IPER | THE NEW RANGE OF CHILLERS AND HEAT PUMPS

STRENGTH OF THE RANGEHIGH SEASONAL EFFICIENCY, AIMED AT

PERMANENTLY REDUCING ANNUAL ENERGY CONSUMPTION

GALLETTI’S RESPONSE

V-IPER is Galletti’s high e�ciency range, featuring the most advanced

technology of the R410A multiscroll units used in HVAC.

The range consists of 20 air-water models available as chiller and heat pump, with

cooling capacities from 50 to 380 kW.

SMART MODULATION OF THE WATER FLOW RATE

COUNTERFLOW SOLUTIONS HIGH SEASONAL EFFICIENCY

DOUBLE CLASS A EUROVENT

COOLING CAPACITY (kW)

3.50

3.70

3.90

4.10

4.30

4.50

4.70

4.90

40 80 120 160 200 240 280 320 360

TANDEM AND TRIO SOLUTIONS:2 or 3 compressors on a single cooling circuit have the goal o� increasing e�ciency at partial loads. The entire range is sized with large exchange sur�aces on both the air side and the water side, to reach values o� SCOP up to 4,33 and values o� SEER up to 4.82.

SCOP

SEER

HIGH SEASONAL EFFICIENCY4

EXTERNAL STRUCTUREBase and structure built �rom steel sheet, with a textured polyester powder coating �or outdoors (colour RAL9002) to ensure e�ective resistance to corrosive agents. The �rame has structural rein�orcements in the most stressed node, highlighted by care�ul study �em through advanced so�tware, to ensure maximum strength under all conditions.

INTERNAL STRUCTURE AND FASTENINGSFastening devices are made o� non-oxidizable materials, or carbon steel that has undergone sur�ace-passivating treatments. The condensing coils are designed in a V shape that is optimized �or maximum heat exchange with minimum �ootprint.

ELECTRICAL CONTROL BOARDElectrical panel with door locking switch and waterproo� panels �or quick access to the control keypad constructed in compliance with EN 60204 EC and placed in a raised position, protected against the risk o� impacts and �reezing, wired in compliance with Directive 2014/30/EU on electromagnetic compatibility and relevant standards. The unit is designed �or 400V/3N/50Hz power supply.

ELECTRONIC VALVEStandard electronic control o� the entire range o�ers greater responsiveness during transients. The electronics also manage the synergistic operation o� the compressors and the valve, thereby making it possible to vary superheating and maximize e�ciency at partial loads when cooling.

COOLING CIRCUITThe cooling circuit is built using only components o� the fnest quality brands produced by qualifed manu�acturers according to the specifcations o� Directive 2014/68/EU �or brazing. Strict design and quality control standards are applied during all phases o� construction o� the internal piping.

HIGH SEASONAL EFFICIENCY

EXTENDED OPERATING RANGE

V-PLUS V-MAIN COMPONENTS

1

3

4

ENVIRONMENTAL SUSTAINABILITY

CONFIGURABILITY

2

HIGH SEASONAL EFFICIENCY 5


For more than 65% of the operating hours a heat pump operates at partial load, that is, with

lower power than the rated power. This aspect is intrinsically due to the seasonal climatic pro�le

typical of the installation site and to the fact that the unit is often sized under the most critical

outdoor conditions.

TANDEM AND TRIO COMPRESSORS | SOLUTIONS HIGHER EFFICIENCY AT PARTIAL LOADS

The V-IPER range has been equipped with scroll type compressors in tandem or trio

con�guration connected in parallel on the same circuit, can be sound insulated, complete with

thermal protection inside the windings, and installed on special vibration dampers.

The high number of compressors allows the delivery of even very small fractions of the rated

power, eliminating the problem of frequent ON/OFF cycles of the compressors typical of partial-

load operation of single-compressor units. �n this manner it is possible to achieve high seasonal

e�ciency values, as well as time e�ciency, under rated conditions.

SCROLL TYPE COMPRESSORS IN A TANDEM OR TRIO CONFIGURATION

CLIMATIC PROFILES BOLOGNA IN THE WINTER MONTHS The y-axis indicates the number o� hours in a year during which the outdoor temperature speci�ed on the x-axis occurs. In the design phase, it will be essential to consider, �or the correct sizing o� the machine, which, �or most o� the hours, the power demand o� a building will be less than the rated power calculated on the basis o� the design temperature (�or Bologna -5 °C), and consequently the heat pump will operate mainly in load splitting mode.

SCOP AND SEERHigh seasonal e�ciency values translate into a strong decrease in energy consumption during the actual operation o� the unit, resulting in considerable savings both in economic terms and in terms o� the emission o� pollution. Taking into consideration two 300kW high e�ciency units (class A Eurovent), the use o� 6 compressors instead o� 4 increases seasonal e�ciency to such an extent that the investment pays �or itsel� in less than three years!

OUTDOOR AIR TEMPERATURE (°C)

300

400

tbin

[h]

0

100

200

20191817161514131211109876543210-1-2-3-4-5

V-IPER 306 HS HIGH EFFICIENCY AT 4 CP

€/kWh 0.22 0.22

COP 3.32 3.20

COMPRESSORS / CIRCUITS 6/2 4/2

SCOP 4.14 3.60

ENERGY SUPPLIED PER YEAR IN HEATING (KWH) 401015 401015

ENERGY ABSORBED PER YEAR IN HEATING (KWH) 96864 111393

ANNUAL SAVINGS (€) 3197

PAYBACK TIME < 3 YEARS



�n the context of centralized air conditioning, auxiliary components and especially

motor pumps can have an e�ect on electricity consumption of up to 30% (UK Market

Transformation Programme - Report BNMO8). �n order to reduce the consumption of the entire

system, V-�PER is equipped with a water �ow regulation system on the primary circuit aimed at

achieving 5 main objectives.

WATER-SIDE SOLUTIONS SMART MANAGEMENT OF WATER FLOW RATE ON THE PRIMARY CIRCUIT

THE T PROBE | The T probe inside the tank on the bypass branch

makes it possible to switch o� the pump on the primary circuit

contemporaneously with the shutdown of all the compressors and

upon reaching a temperature inside the tank set by the user. On

a spring day with an average outdoor temperature of 12 °C, this

unique functionality ensures a

costs .

2Increase the

e�ciency o� the cooling cycle at

partial loads

5Increase the

system’s seasonal e�ciency

1Reduce pumping

costs

3O�er greater

stability o� the fow temperature to the

system

4Reduce pressure drop through the plate heat

exchanger

MODULATING PUMPSIn the diagram, the modulating pump on the primary circuit managed by V-IPER regulates the temperature di�erence to keep it �xed on the machine side (�or example, 12 °C at inlet and 7 °C at outlet), and the modulating pump on the secondary circuit regulates the pressure di�erence to keep it constant between points A and B as the downstream valves open/close.

LOAD SPLITTINGEven with the higher levels o� load splitting, the unit will tend to operate with �T rated on the water (e.g.: 12 - 7 = 5 °C), with signi�cant increases in seasonal and time e�ciency.

-8%IN COMPARISON TO THE SAME SYSTEM

CONFIGURATION WITHOUT PROBE

RATIO OF EER VARIABLE FLOW RATE / EER CONSTANT FLOW RATE

PERC

ENT O

F THE

RATE

D LO

AD

100%

100% 101% 102% 103% 104% 105% 106% 107% 108% 109% 110%

80%

60%

50%

40%

30%


V-IPER is equipped with a brazed plate heat exchanger made of

stainless steel, characterized by a design speci�cally developed for

partial-load operation, making it possible to maintain optimal heat

exchange with modulation of the water �ow rate of up to 30%

compared to the nominal point.



DYNAMIC SIMULATIONS PERFORMANCE OPTIMIZATION

The main challenge consisted of the implementation

of a highly complex model using dynamic simulation

software that made it possible to analyze multiple

scenarios. Speci�cally, the dynamic simulations take

into account:

> system inertia

> the con�guration of the hydraulic distribution system

between the heat pump and emitters

> the system components’ adjustment logic

�t is, therefore, possible to check the behavior of the

system in the individual transients and consider the e�ect

during an entire heating season. The main con�gurations

examined in this study are listed below, as are also the 4

daily climate pro�les considered.

DEPARTMENT OF TECHNICAL PHYSICS OF THE UNIVERSITY OF BOLOGNA

The proposed layout o� the system is the result o� a meticulous, in-depth study carried

out in collaboration with the Department o� Technical Physics o� the University o�

Bologna, whose goal was to highlight the advantages and disadvantages o� various distribution system layouts, as well as the

di�erent control dynamics.


ADAY Taverage = -4.1 °C

DAY Taverage = 3.9 °C



B

C

D

HOURS OF THE DAY (h)

OUTD

OOR A

IR TE

MPER

ATUR

E (°C

)

0 4 8 12 16 20 24-10

0

10

20

-4.13.9

12.6

6.9

SYSTEM PRIMARY INVERTER PUMP2

SYSTEM PRIMARY PUMP ON/OFF, SECONDARY INVERTER PUMP3

SYSTEM PRIMARY AND SECONDARY INVERTER PUMP4

SYSTEM 1 PRIMARY CIRCUIT PUMP ON/OFF


The results of the simulations are summarized in the two graphs below. Day A is

characterized by a climatic pro�le typical of a winter day, therefore, with a very low average

temperature; day D, instead, by a more temperate climate, similar to a spring day.

0%

10%

20%

30%

40%

1 2 3 4

TYPE OF INSTALLATION

PUMP

ING

CONS

UMPT

ION S

AVIN

GS (%

)

-35%PUMPING CONSUMPTION SAVINGS

0%

10%

20%

30%

40%

1 2 3 4

TYPE OF INSTALLATION

PUMP

ING

CONS

UMPT

ION

SAVI

NGS (

%)

-3%PUMPING CONSUMPTION SAVINGS

DAY A

DAY D

SMART ADJUSTMENT ON THE PRIMARY CIRCUIT SYSTEM PUMPING CONSUMPTION SAVINGS


in the case of very cold days in which the unit is required to function most of the time at

full capacity, the e�ect of modulating the water �ow rate on the primary circuit is

negligible.

-4.1°C

+12.6°C

AVARAGE TEMPERATURE

AVARAGE TEMPERATURE

DAY A

DAY D



During the winter, the operation of the heat pumps results in the formation of frost on the surface of the evaporator coils, especially when two conditions occur simultaneously:

1. Humid air cools to below the dew point with consequent deposit on the surface of the

condensation produced;

2. Surface temperature of the evaporator coil lower than 0 ° C.

UPWIND INNOVATIVE AIR-SIDE SOLUTIONS

UPW�ND technology allows, when the cycle reverses (1 and 2), to maintain the same

direction of �ow of the refrigerant through the condensing coils and to ensure that

exchange with the air always occurs in counter�ow. This solution is implemented through

precise adjustments on the cooling circuit, advanced electronics, and a layout of the �nned

block condensing coils that is unique on the market. The counter�ow exchange with air

makes it possible to decrease the temperature di�erence between the air and the

refrigerant, with exchanged power being equal, and therefore to raise the evaporation

temperature during the winter season.

A higher evaporation temperature means:

> an increase in the time e�ciency at the rated conditions (class A Eurovent in both

cooling and heating modes).

> An increase in e�ciency under the harshest operating conditions and therefore a

signi�cant increase in seasonal e�ciency (SCOP).

> A signi�cant reduction in the formation of frost on the coils and in the consequent

dynamic, inevitable, but energy-intensive defrosting procedures.


COOLING CAPACITY (kW)

EE

R

CO

P

2.90

3.15

2.95

3.20

3.00

3.25

3.05

3.30

3.10

3.353.40

50 100 150 200 250 300 350 400

CONDENSATION EVAPORATION

HOT AIR

3

2

1

UP WI

ND COIL AND STANDARD COIL

STANDARD COIL

UP WI

ND COIL

HOT AIR

HOT AIR

HOT AIR

COLD AIR

COLD AIR

COLD AIR

COLD AIR

THE FORMATION OF CONDENSATIONWhen a heat exchange occurs with a latent component, we notice the �ormation o� condensation between the inlet and outlet o� the coil. The absolute humidity o� the air and its temperature are responsible �or this phenomenon. At the same temperature, a high humidity results in high condensation production.


Taking as a reference the Bologna Test Reference Year (design temperature -5 °C) and simulating the real operation of a V-�PER heat pump during the year, it is possible to observe a 51% decrease in the number of hours with the risk of ice formation on the coil.

UPWIND SIGNIFICANT REDUCTION IN THE DEFROSTING CYCLES


V-IPER UPWIND COIL

RELA

TIVE H

UMID

ITY (%

)RE

LATIV

E HUM

IDITY

(%)

RELA

TIVE H

UMID

ITY (%

)

AIR TEMPERATURE (°C)

-10 -5 0 5 10 15 20 25 30 35 400

20

40

60

80

100

120


-10 -5 0 5 10 15 20 25 30 35 400

20

40

60

80

100

120


-10 -5 0 5 10 15 20 25 30 35 400

20

40

60

80

100

120

1601h/year

780h/year

821h/year -51%

HOURS OF FROST AVOIDED

CO-CURRENT STANDARD COIL

HOURS OF FROST AVOIDED: STANDARD COIL VS. V-IPER

UPWIND COIL



HYDRO SMART FLOW

�n the operation of an air-water type refrigeration unit, the two sources with which the refrigerant exchanges heat during its cyclical transformations are: the air, through the �nned coil, and the water, through the plate heat exchanger.

Correctly sizing these two elements during the design phase results in a clear improvement in the unit’s consumption and performance, since the compressor will operate between the closest evaporation and condensation pressures, with the temperature of the water produced and the outdoor air being equal.

THE V-IPER RANGE HAS ADOPTED CUTTING-EDGE SOLUTIONS NOT ONLY FOR THE AIR-SIDE EXCHANGE, BUT ALSO FOR THE WATER-SIDE EXCHANGE.


The HSF kit, which is available on request, optimizes the unit�s operation during the winter season. This system is placed on the hydronic side of the unit and consists of a 4-way valve and a special hoses kit including a �ow switch. Hydro Smart Flow is activated at the time of seasonal changeover, when the coolant changes its direction of �ow through the plates. The 4-way hydronic valve also reverses the direction of water �ow, in line with what occurs on the coolant side.

EXCHANGED POWEREXCHANGED POWER

TEMP

ERAT

URE

CONDENSATION TEMPERATURE

REDUCTION

Water Water

re�rigerant fow

water fow

STANDARD CHILLER V-IPER CHILLER

re�rigerant fow

water fow water fowre�rigerant fow

STANDARD HEAT PUMP V-IPER HEAT PUMP

water fowre�rigerant fow

EXTENDED OPERATING RANGE12


The generous sizing of the exchange surfaces and the choice of the highest quality components are the elements that have made it possible to create a range that is not only e�cient, but also has a high degree of reliability under every operating condition, from the harshest outdoor temperatures to the highest ones.


TEMPERATURE OF WATER PRODUCED

OUTD

OOR A

IR TE

MPER

ATUR

E

-15 -10 -5 0 5 10 15 20 25-15

-10

-5

0

5

10

15

20

25

30

35

40

45

50

55OPT1: GLYCOL + LOW TEMPERATURE OPTION

PARTIAL LOAD

OUTDOOR AIR TEMPERATURE

TEMP

ERAT

URE O

F WAT

ER PR

ODUC

ED

-20 -15 -10 -5 10 15 20 30 35250 525

35

45

55

30

40

50

60HYDRO SMART FLOW

OPERATING LIMITS IN COOLING MODE

OPERATING LIMITS IN HEATING MODE

EXTENDED OPERATING RANGECounterfow heat exchange allows the condensation temperature to be lowered, with the temperature o� the hot water produced being equal. This e�ect extends the unit’s operating range, allowing it to simultaneously produce water at higher temperatures and increase the per�ormance and e�ciency as a heat pump.

ENVIRONMENTAL SUSTAINABILITY 13


MICROCHANNEL COIL TECHNOLOGY AT THE SERVICE OF THE ENVIRONMENT FOR ENVIRONMENTALLY SUSTAINABLE SOLUTIONS

The European F-GAS regulation pays particular attention to the refrigerants used up till

now (HFCs) due to their high GWP value. �n this respect, starting from 2020, this legislation

imposes a ban on the use of refrigerants with a GWP value higher than 2500 during

maintenance and a progressive reduction of the quantities of greenhouse gases that can

be marketed. This reduction is calculated on the basis of the tCO2 equivalents: compared

to the equivalent total placed on the market in 2015, a reduction of 79% will be gradually

introduced by 2030, with e�ects in terms of costs as well as product availability on the

market.

REFR

IGER

ANT C

HARG

E (KG

)

0

10

20

30

40

50

60

300KW STANDARD COIL CHILLER300KW V-IPER

CHILLER VERSION V-IPERThe cooling-only versions of the V-IPER range have, as standard equipment, microchannel

heat exchangers, consisting of aluminum-manganese alloy �ns, long-life alloy channels and

end sections, and copper-aluminum joints coated with heat-shrink sleeves.

The careful thermodynamic research carried out ensures an exchange surface between

air and refrigerant that is considerably larger than a conventional coil, thus allowing,

with condensing power being equal, to achieve a 40% reduction in the total refrigerant

charge; this is an outstanding achievement that is consistent with Galletti’s decision to

produce ultra-low TEW� units to reduce the environmental impact of the HVAC sector.

The condensing coils are mounted on vibration dampers that allow expansion depending

on the operating temperature and the absorption of harmful vibrations typical of

transport phases. �n order to e�ectively combat the aggressiveness of the elements, the

coils are equipped with standard double protection: an epoxy paint treatment and a UV

treatment.

Such treatments allow the V-�PER range chillers to operate safely even in potentially

corrosive environments.

UP TO 2400 HOURS OF RESISTANCE UNDER SALT SPRAY CONDITIONS

REDUCTION OF THE TOTAL REFRIGERANT CHARGE

ENVIRONMENTAL SUSTAINABILITY

2500

2015

AVER

AGE G

WP

AMOU

NTS A

VAILA

BLE

2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030

500750

1000125015001750

20002250

10%0%

20%30%40%50%60%70%80%90%100%

The reduction in the amounts o� greenhouse gases available on the market will result in a gradual decrease in the average GWP value o� the re�rigerants used

-40%

CONFIGURABILITY14

CONFIGURABILITY

V-IPER is equipped with electric fans with a 6-pole external rotor motor directly keyed to the

axial fan, with internal thermal protection on the windings, complete with safety grille and

dedicated support structure. The unique aerodynamic pro�le of the blades (HyBlade) results

in outstanding aeraulic and acoustic performance.

The AxiTop di�user is available as an option; it allows fan e�ciency to be further increased

with bene�ts in relation to the acoustic pro�le and the e�ciency of the entire unit. For

applications where quiet operation is a key factor during the design phase, the EC fans can

also be connected to the di�users and the night-time low-noise function can be activated,

which, by acting on the maximum number of compressors that are on and the maximum

fan speed, can lower the sound power level by as much as 8 dB.

The compressor compartment is separated from the hydraulic circuit and from the

ventilation section, allowing for simpler maintenance and, on request, reduced noise

levels by means of noise-canceling headsets and soundproo�ng.

HIGH CONFIGURABILITY FOR CUSTOMIZED SOLUTIONSREDUCTION OF ACOUSTIC IMPACT

HYDRAULIC SIDE

As another standard feature, the units are equipped with hydraulic connections to

the outside with Victaulic type connectors, vane type �ow switch or hot wire �ow

switch, inlet and outlet water temperature probe for management of the load,

the variable �ow rate on the primary circuit, and with antifreeze thermostat function.

Available on request there are numerous pump systems that can be incorporated within

the chiller unit without changing its overall dimensions:

> single standard or high delivery head pump

> standard or high-head pump and relative reserve pump (with scheduled rotation)

> single standard pump or high-head pump controlled by the inverter

Each hydronic kit includes the membrane expansion tank and, if requested, the inertial

bu�er tank. �n the case of pump systems including a back-up pump, the microprocessor

controls the pumps in such a way as to equally divide the hours of operation, changing

over the pumps in the event of a fault.

V-IPER SOLUTIONS FOR EXCEPTIONALLY LOW NOISE

-3dB -4dB -5dB -8dB

Acoustical enclosures

Axitop

EC �ans

Night time low-noise operation

CONFIGURABILITY 15


CONFIGURABILITY

MANY FUNCTIONS FOR MANAGING THE UNIT

The electronic control enables the complete control of the unit. �t can be easily accessed

through a polycarbonate �ap with IP65 protection rating. The self-adaptive logic allows

the unit to operate even in systems where the water content is low, while the reading of

the outdoor air temperature makes it possible to automatically change the set-point to

adapt it to the outdoor load conditions or to keep the unit running even in the harshest

winter conditions.

MAIN FUNCTIONS

Control over the temperature of water entering the evaporator.

Possibility to set up LAN networks for controlling 4 units in parallel.

Management of the algorithm for modulating the water �ow rate on the primary circuit

Complete alarm management

Management of the low-noise function

Possibility of connecting an external control panel that replicates the control functions on board the unit and that can be connected to an RS485 serial line for supervision or remote support

Management of the weekly scheduling

Recording of operating parameters and their storage in the memory as well as the ability to download via a control link

Exclusive algorithm for continuous monitoring of refrigerant charge

CONFIGURABILITY16

CONFIGURABILITY

THE HIGH CONFIGURABILITY OF V-IPER

MONITORING THE REFRIGERANT CHARGEThe range includes a constant monitoring logic of the refrigerant charge without the use

of refrigerant sensors. Through continuous monitoring of the characteristic parameters

of the cooling cycle, such as overheating, under-cooling, percentage of opening of the

electronic valve in relation to the number of compressors operating, and especially

the behavior of the two-phase liquid when passing through the �lter placed at the

capacitor outlet, V-IPER will detect a possible reduction in the amount of refrigerant and

will promptly report this situation to prevent any complications and to protect the main

components. �n case of low refrigerant charge, it is mandatory to provide maintenance

to recharge the refrigerant and check for any leaks.

MANAGEMENT OF OVERHEATING DYNAMICSThe advanced control, a standard feature of V-IPER, synergistically manages the

components in order to achieve maximum e�ciency under all load conditions. �n

particular, when cooling capacity is reduced, switching o� the compressors will modify

the overheating setting in order to increase the heat exchange capacity between

refrigerant and water, thus increasing the e�ciency of the cooling cycle. This function

is aimed at increasing the e�ciency at partial load and is made possible as a result of

the presence of the electronic valve, the multiscroll system, and the Galletti advanced

control and adjustment system.

OIL RECOVERY MANAGEMENTThis function makes it possible to recover the oil that can naturally settle inside the

cooling circuit during operating conditions with a considerably reduced load. The control

software for the V-IPER units constantly analyzes the level of power required by the

individual cooling circuits and activates the oil recovery procedure if the operating

conditions with a considerably split load persist over time. This procedure was

developed in order to ensure continuity of service of the units without penalizing their

e�ciency.

CDS - CONTINUOUS DATA STORAGEThis feature makes it possible to continuously store the characteristic operating

parameters of the unit and the system in the control microprocessor, thanks to the

provision of an additional memory, which is included on the controls of the entire range

as a standard feature.

Thanks to this solution it is possible to increase the precision of the commissioning

operations, perform a deeper analysis of the state of the unit during periodic

maintenance work, and speed up the problem solving operations in the event of a

failure. The stored information can be accessed on two levels: by means of a simple USB

memory if the unit is con�gured with a touch screen interface, or through a dedicated

software program if it is con�gured with a basic interface.

MAXIMUM EFFICIENCY UNDER ALL LOAD CONDITIONS

GENERATION OF MAIN PARAMETERS HISTORY

EXTENDING COMPRESSORS’ SERVICE LIFE

CONTINUOUS AND INTELLIGENT MONITORING

CONFIGURABILITY 17


CONFIGURABILITY

CONFIGURATIONThe models are completely con�gurable by selecting the version and the options. Below is shown an example of con�guration.

To verify the compatibility of the options, use the selection software or the price list.

A Heat exchanger protective grille

B Hydro Smart Flow (excludes the tank)

C Pair o� Victaulic quick couplings

D ON/OFF status o� the compressors

E Remote control �or power step limits (requires advanced control)

F Con�gurable digital alarms board (requires advanced control)

G So�t starter

H Power �actor correction capacitors

I Regulating �lter kit (solenoid and tap)

L Water circuit double isolation

M 0-10V signal �or external pump control on user side (excludes on-board pump)

N Tandem/trio compressor shut-o� valves

COOLING ONLY VERSIONS VERSIONS WITH REVERSIBLE HEAT PUMPVPR..CS0A400V-3N-50Hz power supply + circuit breakers

VPR..HS0A400V-3N-50Hz power supply + circuit breakers

VPR..CS2A400V-3-50Hz power supply + trans�ormer + circuit breakers

VPR..HS2A400V-3-50Hz power supply + trans�ormer + circuit breakers

AVAI

LABL

E VER

SIONS

CONF

IGUR

ATIO

N OP

TIONS

ACCE

SSOR

IES

1 Expansion valve A Electronic

2 Water pump and accessories 0 Absent 1 LP pump + expansion tank 2 Dual LP pump with timed rotation + expansion tank 3 HP pump + expansion tank 4 Dual HP pump with timed rotation + expansion tank A LP inverter pump + expansion tank B Dual LP inverter pump with timed rotation + expansion tank C HP inverter pump + expansion tank D Dual HP inverter pump with timed rotation + expansion tank

3 Bu�er tank 0 Absent S Present (excludes Hydro Smart Flow)

4 Partial heat recovery 0 Absent S Desuperheater with pump contact

5 Air fow modulation C Condensation control with �ans adjusted by potentiometer E Condensation control, BLDC electronically controlled �ans

6 Anti�reeze kit 0 Absent E Evaporator P Evaporator and water pump S Evaporator, water pump and inertial tank

7 Acoustic insulation and attenuation 0 Absent 1 Compressor compartment soundproo�ng 2 Sound attenuation o� the �ans (AXITOP) 3 Sound attenuation o� the �ans (AXITOP) + silencing housings +

acoustical enclosures 8 Cooling circuit accessories 0 Absent M Re�rigerant pressure gauges

9 Remote control / Serial communication 0 Absent 2 RS485 Serial board (Modbus/Carel protocol) B BACNET IP/ PCOWEB serial board (requires advanced control) F BACNET MS/TP PCONET board G BACNET IP/ PCOWEB board + MONITORING SOFTWARE (GWeb) L LON FTT1O serial card (requires advanced control) S Simpli�ed remote user inter�ace T Touch screen remote control X Remote user inter�ace �or advanced command

10 Special coils / protective treatments 0 Standard 1 Hydrophilic M Microchannels with epoxy resin + UV treatment (standard �or

chillers) R Copper / copper

11 Vibration isolation 0 Absent G Base rubber vibration dumpers M Base spring vibration dumpers

12 Compressor options 0 Absent 1 Compressor cover heating element (CHILLER), coil heating cable

(HP) 13 On-board control 1 Advanced 2 Advanced + touch inter�ace + USB

TECHNICAL DATA18

(1) Water temperature 12/7°C; outdoor air temperature 35°C (14511:2013)(3) Sound power level measured according to ISO 9614(E) EUROVENT certi�ed data

V-IPER..CS 52 62 72 82 92 Power supply V-ph-Hz 400-3N-50

Cooling capacity (1)(E) kW 51.4 65.1 73.7 83.7 97.3

Power input (1)(E) kW 16.0 20.3 22.8 26.2 30.5

EER (1)(E) 3.21 3.21 3.23 3.19 3.19

SEER (E) 4.44 4.50 4.19 4.31 4.35

Water�ow rate (1) l/h 8875 11249 12737 14458 16777

Pressure drop, water side (1)(E) kPa 37 45 47 41 31

Available head, standard pump (1) kPa 154 141 189 182 174

Maximum absorbed current A 40 50 59 68 74

Startup current A 138 194 203 212 218

Startup current with so�t starter A 97 134 142 S151 157

no. o� scroll compressors / circuits 2/1 2/1 2/1 2/1 2/1

Tank capacity dm3 250 250 350 350 350

Expansion tank capacity dm3 18 18 18 18 18

Sound power level (2)(E) dB(A) 80 84 83 83 87

Transport weight unit with pump and tank kg 813 823 875 888 968

Operating weight unit with pump and �ull tank kg 1163 1173 1225 1238 1318


Cooling capacity (1)(E) kW 109 102 125 131 156

Power input (1)(E) kW 34.6 32.4 40.3 42.3 47.7

EER (1)(E) 3.16 3.16 3.10 3.10 3.26

SEER (E) 4.41 4.13 4.51 4.52 4.56

Water�ow rate (1) l/h 18824 17654 21514 22580 26818





Startup current with so�t starter A 190 137 181 184 208


Tank capacity dm3 350 350 350 350 450





CHILLER VERSION V-IPER

TECHNICAL DATA 19


(1) Water temperature 12/7°C; outdoor air temperature 35°C (14511:2013)(3) Sound power level measured according to ISO 9614(E) EUROVENT certi�ed data



Power input (1)(E) kW 50.8 52.0 58.8 63.4 66.4

EER (1)(E) 3.26 3.28 3.30 3.21 3.20

SEER (E) 4.30 4.82 4.81 4.31 4.59

Water�ow rate (1) l/h 28517 29397 33459 35038 36645







Tank capacity dm3 450 450 450 450 450







Power input (1)(E) kW 80.4 84.6 89.2 104 115

EER (1)(E) 3.12 3.18 3.26 3.18 3.20

SEER (E) 4.78 4.53 4.49 4.58 4.59

Water�ow rate (1) l/h 43148 46354 50075 56730 63598







Tank capacity dm3 450 750 750 750 750


Sound power level (2)(E) dB(A) 90 90 92 93 9 3



TECHNICAL DATA20

V-IPER..HS 52 62 72 82 92 Power supply V-ph-Hz 400 - 3N - 50 Cooling capacity (1)(E) kW 51.8 65.1 72.3 84.1 96.0 Power input (1)(E) kW 16.3 20.8 22.9 26.6 30.1 EER (1)(E) 3.18 3.13 3.16 3.16 3.19 SEER (E) 4.31 4.42 4.05 4.23 4.27 Water�ow rate (1) l/h 8950 11252 12492 14522 16557 Pressure drop, water side (1)(E) kPa 38 45 45 41 30 Available head, standard pump (1) kPa 153 139 189 182 174 Heating capacity (2)(E) kW 54.4 67.6 78.0 87.9 99.8 Power input (2)(E) kW 16.5 20.2 23.9 26.8 30.1 COP (2)(E) 3.30 3.35 3.26 3.28 3.32 COP with hydro smart �ow + 8% SCOP (E) 3.88 3.95 3.60 3.72 3.82 Efciency Class (3)(E) A++ A++ A+ A+ A++ Water�ow rate (2) l/h 9394 11671 13467 15188 17268 Pressure drop, water side (2)(E) kPa 41 49 52 45 32 Available head, standard pump (2) kPa 142 124 173 164 155 Maximum absorbed current A 40 50 59 68 74 Startup current A 138 194 203 212 218 Startup current with so�t starter A 97 134 142 151 157 no. o� scroll compressors / circuits 2/1 2/1 2/1 2/1 2/1 Tank capacity dm3 250 250 350 350 350 Expansion tank capacity dm3 18 18 18 18 18 Sound power level (4)(E) dB(A) 80 84 83 83 87 Transport weight unit with pump and tank kg 938 950 990 1006 1092 Operating weight unit with pump and �ull tank kg 1288 1300 1340 1356 1442

V-IPER..HS 112 114 133 134 164 Power supply V-ph-Hz 400 - 3N - 50 Cooling capacity (1)(E) kW 108 103 124 130 154 Power input (1)(E) kW 34.4 33.2 40.1 42.0 48.5 EER (1)(E) 3.14 3.11 3.10 3.10 3.18 SEER (E) 4.36 4.46 4.18 4.24 4.05 Water�ow rate (1) l/h 18638 17800 21400 22424 26572 Pressure drop, water side (1)(E) kPa 28 32 23 28 35 Available head, standard pump (1) kPa 142 140 139 132 159 Heating capacity (2)(E) kW 111 107 126 132 161 Power input (2)(E) kW 33.5 32.8 38.2 40.2 49.8 COP (2)(E) 3.30 3.26 3.31 3.27 3.24 COP with hydro smart �ow + 8% SCOP (E) 3.87 3.96 3.91 3.81 3.71 Efciency Class (3)(E) A++ A++ A++ A++ A+ Water�ow rate (2) l/h 19161 18512 21892 22785 27896 Pressure drop, water side (2)(E) kPa 30 35 24 29 38 Available head, standard pump (2) kPa 132 128 127 118 149 Maximum absorbed current A 81 79 98 101 125 Startup current A 269 178 242 245 269 Startup current with so�t starter A 190 137 181 184 208 no. o� scroll compressors / circuits 2/1 4/2 3/1 4/2 4/2 Tank capacity dm3 350 350 350 350 450 Expansion tank capacity dm3 18 18 18 18 24 Sound power level (4)(E) dB(A) 88 87 87 87 86 Transport weight unit with pump and tank kg 1177 2099 1114 2196 1941 Operating weight unit with pump and �ull tank kg 1527 2549 1464 2646 2391

(1) Water temperature 12/7°C; outdoor air temperature 35°C (14511:2013) (2) Water temperature 40/45 °C, outdoor air temperature 7 °C D.B. - 6 °C W.B. (14511:2013)

V-IPER HEAT PUMP VERSION

TECHNICAL DATA 21


V-IPER..HS 173 174 204 213 226 Power supply V-ph-Hz 400 - 3N - 50 Cooling capacity (1)(E) kW 163 168 191 205 212 Power input (1)(E) kW 50.9 52.5 59.9 64.7 67.8 EER (1)(E) 3.20 3.20 3.19 3.17 3.13 SEER (E) 4.42 4.41 4.64 4.60 4.45 Water�ow rate (1) l/h 28058 28902 32873 35318 36553 Pressure drop, water side (1)(E) kPa 31 23 28 35 27 Available head, standard pump (1) kPa 161 168 155 146 150 Heating capacity (2)(E) kW 167 175 200 211 220 Power input (2)(E) kW 51.8 53.1 59.9 63.8 66.3 COP (2)(E) 3.22 3.30 3.33 3.31 3.32 COP with hydro smart �ow + 8% SCOP (E) 3.58 3.82 3.86 3.80 4.25 Efciency Class (3)(E) A+ A++ A++ A++ A++ Water�ow rate (2) l/h 28899 30371 34553 36514 38078 Pressure drop, water side (2)(E) kPa 32 25 31 37 29 Available head, standard pump (2) kPa 153 159 144 133 137 Maximum absorbed current A 125 136 148 149 162 Startup current A 313 280 337 377 278 Startup current with so�t starter A 235 219 258 281 229 no. o� scroll compressors / circuits 3/1 4/2 4/2 3/1 6/2 Tank capacity dm3 450 450 450 450 450 Expansion tank capacity dm3 24 24 24 24 24 Sound power level (4)(E) dB(A) 88 87 90 91 90 Transport weight unit with pump and tank kg 1435 1981 2148 1478 2160 Operating weight unit with pump and �ull tank kg 1785 2431 2598 1828 2610

V-IPER..HS 256 276 306 336 386 Power supply V-ph-Hz 400 - 3N - 50 Cooling capacity (1)(E) kW 249 270 290 327 367 Power input (1)(E) kW 80.1 85.1 90.7 104 116 EER (1)(E) 3.11 3.18 3.19 3.13 3.16 SEER (E) 4.66 4.46 4.37 4.45 4.43 Water�ow rate (1) l/h 42950 46552 49902 56273 63303 Pressure drop, water side (1)(E) kPa 31 33 37 40 45 Available head, standard pump (1) kPa 135 175 163 143 160 Heating capacity (2)(E) kW 253 279 297 337 379 Power input (2)(E) kW 76.3 84.8 89.5 102 116 COP (2)(E) 3.31 3.29 3.32 3.31 3.28 COP with hydro smart �ow + 8% SCOP (E) 4.33 4.02 4.14 4.22 3.94 Efciency Class (3)(E) A++ A++ A++ A++ A++ Water�ow rate (2) l/h 43756 48326 51503 58364 65654 Pressure drop, water side (2)(E) kPa 32 35 39 43 48 Available head, standard pump (2) kPa 118 162 149 123 145 Maximum absorbed current A 195 206 222 247 274 Startup current A 339 395 411 474 502 Startup current with so�t starter A 278 316 332 379 407 no. o� scroll compressors / circuits 6/2 6/2 6/2 6/2 6/2 Tank capacity dm3 450 750 750 750 750 Expansion tank capacity dm3 24 24 24 24 24 Sound power level (4)(E) dB(A) 90 90 91 93 93 Transport weight unit with pump and tank kg 2186 2919 2926 3032 4329 Operating weight unit with pump and �ull tank kg 2636 3669 3676 3782 5079

(3) Seasonal energy efciency class o� space heating at LOW TEMPERATURE under AVERAGE weather conditions [REGULATION (EU) No. 811/2013] (4) Sound power level measured according to ISO 9614 (E) EUROVENT certi�ed data

DIMENSIONAL DRAWINGS22

V-IPER 52 | 62

Water inlet (Victaulic 2”)

Water outlet (Victaulic 2”)

D 1547 mm

L 2250 mm

HC version H version

2459 mm 2252 mm

V-IPER 72 | 82 | 92 | 112 | 133

Water inlet (Victaulic 2” )

Water outlet (Victaulic 2” )

D 1547 mm

L 2250 mm

H 2459 mm

V-IPER 114 | 134

Water inlet (Victaulic 2” )

Water outlet (Victaulic 2” )

D 1544 mm

L 2750 mm

H 2461 mm

V-IPER 173 | 213 | 164 | 174 | 204 | 226 | 256

4” Victaulic water inlet (reduction �rom 4” to 3” to be installed on site)

4” Victaulic water outlet (reduction �rom 4” to 3” to be installed on site)

D 2252 mm

L 2959 mm

H 2650 mm

1.5 mclear area

1.5 mclear area

1.5 mclear area

2 mclear area

DIMENSIONS

DIMENSIONAL DRAWINGS 23


V-IPER 276 | 306 | 336



D 2155 mm

L 4469 mm

H 2642 mm

V-IPER 386



D 2155 mm

L 5978 mm

H 2649 mm

1.5 mclear area

2 m�ree space

1.5 mclear area

2 m�ree space

DIMENSIONS

GALLETTI S.P.A.Via L. Romagnoli, 12/A40010 Bentivoglio (BO) �TALYT +39 051 [email protected]

GABPBX182A

www.galletti.com

TECHNOLOGY AND EFFICIENCY · EUROVENT / CERTIFIED PERFORMANCE Like the entire Galletti product...

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Transcript of TECHNOLOGY AND EFFICIENCY · EUROVENT / CERTIFIED PERFORMANCE Like the entire Galletti product...