AQUACIAT POWER Water chillers Heat pumps 1 AIR CONDITIONING - HEATING- REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B Cooling capacity: 330 to 500 kW Heating capacity: 340 to 500 kW High energy efficiency with R410A Compact and quiet Scroll compressors Brazed-plate heat exchangers Self-adjusting electronic control Total and partial heat recovery Cooling only Heat pump Hydraulic module USE AQUACIAT power LD - LDC - LDH and ILD - ILDC - ILDH series packaged chilled water or hot water production units are medium-capacity machines specifically designed for heating and air-conditioning applications in one office healthcare, industries administration shopping centres and residential sectors. These packaged units are specifically designed for outdoor installation and require no special protection from adverse weather. They use the outdoor air as the sole transfer medium, which permits the evacuation of heat in summer or the supply of thermal energy for heating in winter. When connected to a radiant floor heating and cooling system, fan coil units or an air handling unit, the ILD - ILDC - ILDH series of reversible AQUACIAT power units makes heating and air conditioning buildings extremely easy. Each unit is delivered fully assembled, wired (control and power), charged with refrigerant and factory tested. Simply make the necessary electrical and hydraulic connections, and your unit is ready to operate. RANGE AQUACIAT power LD series Cooling-only version without hydraulic system. AQUACIAT power LDC - LDH series Cooling-only version with hydraulic system (circulator pump only or pump and buffer tank). AQUACIAT power ILD series Air-to-water reversible heat pumps without hydraulic system. AQUACIAT power ILDC - ILDH series Air-to-water reversible heat pumps with hydraulic system (circulator pump only or pump and buffer tank). HFC R410A E N V I R O N M E N T A L L Y F R I E N D L Y P R O T E C T I O N D E L'E N V IR O N N E M E N T
36
Embed
Water chillers Heat pumps - Brealeconstruct.weebly.com/uploads/5/1/7/4/5174097/technical_brochure_a… · series packaged chilled water or hot water production ... When connected
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
AQ
UA
CIA
T P
OW
ER
Water chillersHeat pumps
1AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
Cooling capacity: 330 to 500 kWHeating capacity: 340 to 500 kW
High energy efficiency with R410ACompact and quietScroll compressorsBrazed-plate heat exchangersSelf-adjusting electronic control
Total andpartial
heat recovery
Coolingonly
Heat pump Hydraulicmodule
USE
AQUACIATpower LD - LDC - LDH and ILD - ILDC - ILDHseries packaged chilled water or hot water production units aremedium-capacity machines specifically designed for heatingand air-conditioning applications in one office healthcare,industries administration shopping centres and residentialsectors.
These packaged units are specifically designed for outdoorinstallation and require no special protection from adverseweather.
They use the outdoor air as the sole transfer medium, whichpermits the evacuation of heat in summer or the supply ofthermal energy for heating in winter.
When connected to a radiant floor heating and cooling system,fan coil units or an air handling unit, the ILD - ILDC - ILDHseries of reversible AQUACIATpower units makes heatingand air conditioning buildings extremely easy.Each unit is delivered fully assembled, wired (control andpower), charged with refrigerant and factory tested.
Simply make the necessary electrical and hydraulicconnections, and your unit is ready to operate.
RANGE
AQUACIATpower LD seriesCooling-only version without hydraulic system.
AQUACIATpower LDC - LDH seriesCooling-only version with hydraulic system (circulator pumponly or pump and buffer tank).
AQUACIATpower ILD seriesAir-to-water reversible heat pumps without hydraulic system.
AQUACIATpower ILDC - ILDH seriesAir-to-water reversible heat pumps with hydraulic system(circulator pump only or pump and buffer tank).
HFC R410A
ENVIRONMENTALLY FRIENDLY
PR
OTECTION DE L'ENVIRONNEM
ENT
AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
AQUACIAT POWER
2
Water chillersHeat pumps
DESCRIPTIONEach AQUACIATpower LD - LDC - LDH series cooling-only unit ILD - ILDC - ILDH reversible heat pump is delivered withthe following components:- air-cooled condenser with axial fan motor assembly,- chilled-water evaporator (hot-water condenser on reversible models),- chilled-water or hot-water capacity control,- control, automatic operation and startup box:
. Electrical power supply: Three-phase AC - 50 Hz - 400 V (+6% / -10%) + Earth
. Control circuit: Single-phase AC - 50 Hz - 230 V(transformers fitted on unit as standard),
- casing for outdoor installation.
■ Compliance with European directives- Machinery directive (98/37/EEC)- EMC directive (2004/108/EC)- Low voltage 2006/95/EC- Pressure equipment directive (97/23/EEC, category 2).
■ Compliance with standards- EN 60204, EN 378-2 (NFC 15-100, France).
KEY
ILD > heat pump version H > hydraulic with pump and buffer tank
LD > cooling-only version 1800 > unit size
C > hydraulic with pump only V > R410A refrigerant
LDC - ILDC 1200 V - 1500 V Models
AQ
UA
CIA
T P
OW
ER
Water chillersHeat pumps
3AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
MAIN COMPONENTS
■ Hermetic scroll compressors
- Built-in electric motor cooled by suction gas
- Motor protected by internal winding thermostat
- Placed on anti-vibration mounts.
■ Evaporator
- Brazed-plate heat exchangers
- AISI 316 stainless steel plates
- High-performance, optimised plate patterns
- Thermal insulation.
■ Condenser
- High-performance air-cooled exchangers, aluminium fins withoptimised profiles and grooved copper tubes
- Condenser or evaporator mode heat exchanger on ILD-ILDC-ILDH reversible heat pumps
- Axial fans with profiled blades
- IP54, class F motors.
■ Control functions or safety devices- Water flow control
- Thermostatic expansion valves
- Refrigerant high and low-pressure safety devices
- Temperature and pressure sensors
- Evaporator water flow controller
- Unit start-up sequence.
■ Electrical boxThe fully wired electrical box housing all the electricalcomponents and the electronic CPU board controls the entireunit, monitors its operation, adjusts water setpoints andinterfaces with an external control system.
Box features:
- Control and power circuits,
- Wire numbers,
- Main safety switch with handle on front,
- Control circuit transformer,
- Circuit breakers on the power and control circuits,
- Compressor motor contactors,
- Fan motor contactors,
- Main earth connection,
- Connect microprocessor-controlled electronic control unit,
- Alarm or information signals on free terminals.
■ Casing
- Removable galvanised metal panels,
- RAL 7024 and RAL 7035 lacquer coating.
ELECTRONIC CONTROL UNIT
CIAT electronic control module with microprocessor and CPU,with central automatic operation and access to internaloperation states.
■ Features- On, off, reset or remote control
- Cooling or Heating mode selector
- RS485 output for BMS connection
- Board adapter for additional dry contacts (option)
- Remote-control adapter (option)
- Multilingual analogue LCD and LEDs
■ Functions- Operation information displayed via:
. Multilingual clear-text messages
. Direct temperature and pressure readings
- Complete management of compressors with start-upsequence, timer and runtime balancing
- Self-adjusting and proactive functions with adjustment ofsettings drift control
- Cascade stage system on multiple compressors lowerspower based on cooling and heating demands controlled usingthe water temperatures
- Monitoring of internal operation parameters
- Second setpoint management
- Direct display of water and pressure temperatures
- Operating status and fault analysis:
HP/LP, water flow, compressor motors, frost protection
- Short-cycle protection
- Remote management and remote monitoring
AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
Note: Some technical options not listed above may be added on special request. Consult us.
STANDARD OR OPTIONAL EQUIPMENT
● Supplied as standard ▲ Factory-fitted option ❚ Option supplied as a kit - Not available
(1) Supplied as standard for a glycol / water outlet temperature of 0°C to -12°C
AQ
UA
CIA
T P
OW
ER
Water chillersHeat pumps
5AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
SEASONAL PERFORMANCE
Most central air-conditioning systems used in the service industry in Europe use water chillers to produce cold.Until recently, the efficiency of air conditioners in Europe was measured using a single nominal test point under full load, calledEnergy Efficiency Ratio (EER). However, a unit’s efficiency depends on its operating conditions.Analyses of installed systems show that heat load varies from season to season and that a water chiller operates primarily atreduced capacity.
The European Seasonal Energy Efficiency Ratio (ESEER) measures the seasonal efficiency of water chillers by taking intoaccount their efficiency under partial load using formulas created by the European certification body Eurovent.
The efficiency under partial load is therefore essential when choosing a water chiller.
It is with this in mind that the new AQUACIATpower range was designed. In particular, the entire range uses R410A refrigerantwhich, thanks to its extremely high thermodynamic performance, makes it possible to obtain much higher EER and ESEERratings than with R407C and as much as 25% less electricity consumption.
As its compressors are connected in parallel on the refrigeration circuit, AQUACIATpower easily and efficiently adjusts thecooling capacity to system’s needs. The self-adjusting CONNECT control anticipates variations in load and turns on only thenumber of compressors needed. The compressors operate at optimum performance, energy efficiency is extremely high all year-round and, as a result, the system remains energy efficient for most of its life.
Unit load Air inlet temperature Chilled water mode Weighting factor
100 % 35 °C 12°C / 7°C A= 0.03
75 % 30 °C 10.8°C / 7°C (*) B = 0.33
50 % 25 °C 9.5°C / 7°C (*) C = 0.41
25 % 20 °C 8.3°C / 7°C (*) D = 0.23
(*) Water flow rate = Water flow rate at 100%
The ESEER design conditions for air-cooled water chillers are as follows:
Seasonal heat load variations
ESEER = A x EER100% + B x EER75% + C x EER50% + D x EER25%
A, B, C and D are weighting factors pertaining to a unit’s running time based on its load
100 %
90 %
70 %
60 %
50 %
40 %
30 %
20 %
10 %
80 %
0 %
B
C
D
A
January February March April May June July August September October November December
Only3 monthsabove 75%
AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
AQUACIAT POWER
6
Water chillersHeat pumps
Example of ESEER/EER of the AQUACIATpower range
4.70
4.40
4.10
3.80
3.50
3.20
2.90
2.60
300 350 400 450 500
4.184.28
4.37 4.39
2.94 2.96 2.92 2.892.94
AQUACIATpower R410A
Conventional R407C unit
Cooling capacity in kW
ES
EE
R
+ 50 %
3.30
3.10
2.90
2.70
2.10
2.50
2.30
300 350 400 450 500
3.022.98
3.01 3.02
2.41
2.322.38
2.33
2.41
AQUACIATpower R410A
Conventional R407C unit
Cooling capacity in kW
EE
R
+ 30 %
CLASSE A
CLASSE B
CLASSE C
CLASSE D
CLASSE E
CLASSE F
ÉnergyCIATAQUACIATpower
Water chillersHeat pumps
Économical
Not very economical
AB
DC
EFG
B
AQ
UA
CIA
T P
OW
ER
Water chillersHeat pumps
7AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
- Expansion vessel:. 80 liters for LDH - ILDH. 50 liters for LDC - ILDC
- 800 micron water filter
- Wide selection of single and dual pumps for your system’sflow and pressure requirements. (1)
- Pressure gauges with shut-off valves.
- 4 bar safety valve.
- Drain line.
- Manual and automatic air bleed valve.
- System control.
- Frost protection (option).
The components in the hydraulic system are carefullyselected and factory assembled and tested to make theinstallation of the units simple and economical.
Preparation times, implementation times and spacerequirements are thus kept to a minimum.
(1) Our pumps are designed to operate on closed water loops (lowNPSH). Please consult us for other applications (open water loop, highNPSH).
Weight (empty, standard version) kg 3499 3957 4567 4621
Weight (empty, version C) kg 3859 4332 4934 4988
Weight (empty, version H) kg 4404 4870 5479 5532
Storage temperature °C +50
➀ High-performance version capacities based on:COOLING: +12 °C / +7 °C and condenser air inlet temperature of +35 °C➁ Gross EER and ESEER values➂ Overall sound power level (Lw) overall sound pressure level (Lp) measured at 10 metres in a free field, as per ISO 3744
TECHNICAL CHARACTERISTICS - COOLING ONLY
AQ
UA
CIA
T P
OW
ER
Water chillersHeat pumps
9AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
AQUACIATpower ILD - ILDC - ILDH 1200 V 1500 V 1650 V 1800 V
Refrigerant oil type Polyol ester Kow 3MAF (32 cSt)Oil capacity l 25.2 40.8 39.3 37,8No. of refrigerant lines 2Refrigerant (GWP) R410A (1890)
Refrigerant chargeCircuit 1 kg 42 43 49 55Circuit 2 kg 42 43 52 55
Electrical power supply ph/Hz/V Three-phase AC - 50 Hz - 400 V (+6%/-10%) + EarthMachine protection rating IP44Control circuit voltage ph/Hz/V Single-phase AC - 50 Hz - 230 V (+6%/-10%) - transformer fittedEvaporator Brazed-plate heat exchangersWater capacity l 26 33.5 37 40.5Chilled water outlet temp. (min ./ max.) °C -12 / +18Hot water outlet temp. (min ./ max.) °C +30 / +55Minimum water flow rate m3/h 38 43 50 56Maximum water flow rate m3/h 106 110 110 110Water connections dia. Victaulic DN 125Max. pressure, water end bar 10 bar (ILD) / 4 bar (ILDC-ILDH)Air-cooled condenser Finned heat exchangerFan mm 800No. x Motor output, high-performance (HP) version kW 6 x 1.64 8 x 1.64Nb x Motor rated power High Performanceseries - LN - and Xtra Low Noise - XLN
kW 6 x 1.13 8 x 1.13
Air flow, high-performance (HP) version m3/h 121800 117000 159200 156000Air flow, low noise (LN) version andXTRA Low noise ( XLN) version
m3/h 90000 87600 118400 116800
Minimum system water volume lTank volume, model H l 950Expansion vessel, C & H l 50 (C version) - 80 (H version)Pump Qty. Based on selection (page 10)Height (excluding mounts) mm 2200 ( 2450 Xtra Low Noise version)Length (standard version) mm 4260 5626Length (version C) mm 4260 5626Length (version H) mm 5289 6655Width mm 2200Weight (empty, standard version) kg 3575 4033 4648 4707Weight (empty, version C) kg 3935 4408 5015 5074Weight (empty, version H) kg 4480 4946 5560 5618Storage temperature °C +50
➀ High-performance version capacities based on:a/ COOLING:+12°C/+7°C and condenser air inlet temperature of +35°Cb/ HEATING: hot water outlet at +45°C and outdoor air at +7°C DB, 86% RH
➁ Gross EER, ESEER and COP values➂ Overall sound power level (Lw) overall sound pressure level (Lp) measured at 10 metres in a free field, as per ISO 3744
TECHNICAL CHARACTERISTICS - REVERSIBLE HEAT PUMPS
AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
AQUACIAT POWER
10
Water chillersHeat pumps
ELECTRICAL CHARACTERISTICS
■ Basic equipment (pump excluded)
AQUACIAT power 1200 V 1500 V 1650 V 1800 V
COMPRESSORS (1)Maximum rated current A 263 296 348 390Starting current (3) A 514 750 849 892Starting current with Soft Start option (3)
A 390 533 601 644
FAN MOTORS (1)HIGH PERFORMANCE version (905 rpm)
Maximum rated current A 20.4 (6 x 3.4) 27.2 (8 x 3.4)LOW NOISE - XTRA LOW NOISE versions (715 rpm)
Maximum rated current A 12.6 (6 x 2.1) 16.8 (8 x 2.1)LD FROST PROTECTION (OPTION) (2)
Evaporator heating element power W 240Maximum rated current A 1.05
The electric voltage for selecting the main power supply cables is equal to the sum of the maximum rated currents given in thetable above.
AQ
UA
CIA
T P
OW
ER
Water chillersHeat pumps
11AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
COOLING CAPACITIES
COOLING ONLY units
Pf: Acceptable cooling capacity for delta T based on operating limits Glycol/water mix requiredPa: Compressor and fan power input Calculated fouling: 0.00005 m2 °C/W
EUROVENT conditions
R4
10
AH
IGH
-PE
RF
OR
MA
NC
E -
HP
LLDDLLDDCCLLDDHH
CONDENSER AIR INLET TEMPERATURE (°C)
Evaporatorwater outlet
temperature (°C)
25 30 35 40 44 48Pf Pa Pf Pa Pf Pa Pf Pa Pf Pa Pf Pa
AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
AQUACIAT POWER
12
Water chillersHeat pumps
COOLING CAPACITIES
COOLING ONLY units
Pf: Acceptable cooling capacity for delta T based on operating limits Glycol/water mix requiredPa: Compressor and fan power input Calculated fouling: 0.00005 m2 °C/W
EUROVENT conditions
R4
10
AL
OW
NO
ISE
- L
N X
TR
A L
OW
NO
ISE
- X
LN
LLDDLLDDCCLLDDHH
CONDENSER AIR INLET TEMPERATURE (°C)
Evaporatorwater outlet
temperature (°C)
25 30 35 40 44 48Pf Pa Pf Pa Pf Pa Pf Pa Pf Pa Pf Pa
13AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
COOLING CAPACITIES
REVERSIBLE units
Pf: Acceptable cooling capacity for delta T based on operating limits Glycol/water mix requiredPa: Compressor and fan power input Calculated fouling: 0.00005 m2 °C/W
EUROVENT conditions
R4
10
AH
IGH
-PE
RF
OR
MA
NC
E -
HP
IILLDDIILLDDCCIILLDDHH
CONDENSER AIR INLET TEMPERATURE (°C)
Evaporatorwater outlet
temperature (°C)
25 30 35 40 44 48Pf Pa Pf Pa Pf Pa Pf Pa Pf Pa Pf Pa
AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
AQUACIAT POWER
14
Water chillersHeat pumps
COOLING CAPACITIES
REVERSIBLE units
Pf: Acceptable cooling capacity for delta T based on operating limits Glycol/water mix requiredPa: Compressor and fan power input Calculated fouling: 0.00005 m2 °C/W
EUROVENT conditions
R4
10
AL
OW
NO
ISE
- L
N X
TR
A L
OW
NO
ISE
- X
LN
IILLDDIILLDDCCIILLDDHH
CONDENSER AIR INLET TEMPERATURE (°C)
Evaporatorwater outlet
temperature (°C)
25 30 35 40 44 48Pf Pa Pf Pa Pf Pa Pf Pa Pf Pa Pf Pa
15AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
HEATING CAPACITIES
REVERSIBLE units
Pc: Acceptable heating capacity for delta T based on operating limits Calculated fouling: 0.00005 m2 °C/WPa: Compressor and fan power input EUROVENT conditions
AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
AQUACIAT POWER
16
Water chillersHeat pumps
HEATING CAPACITIES
REVERSIBLE units
Pc: Acceptable heating capacity for delta T based on operating limits Calculated fouling: 0.00005 m2 °C/WPa: Compressor and fan power input EUROVENT conditions
17AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
DEGIPAC DEFROST SYSTEM ILD-ILDC-ILDHDEGIPAC defrost principleThis system, present as a standard feature on CIAT’s CONNECTcontrol system, makes it possible to defrost in a convenient way a coilof an air/water heat pump.
Thanks to a regular examination of several reference parameters inorder to estimate the frost cover, such as the evaporatingtemperature of refrigerant and the outdoor air temperature, DEGIPACstarts the defrost only when it is really necessary, and defines thetime just necessary to a perfect defrosting of fins of the air coilexchanger.
Compared with a traditional defrosting cycle with timer, DEGIPACoffers an improvement of 5% thus on average of the seasonal COPand it makes it possible to divide by 2 the number of defrosts overone season.
The result is an increased reliability of the heat pumps as well as anexcellent optimization of the cycles frequency by privileging the coldand wet periods.
AUXILIARY HEATING MANAGEMENT
In function of the outdoor temperature and of the heatingcapacity required in winter, an additional extra heatingsystem can be used in addition to the thermodynamic heat
pump AQUACIATpower.
Three running conditions are possible on HEATING mode :
- thermodynamic heating only (heat pump),
- thermodynamic with some electric heaters in addition,
- water heating only with all electric heaters.
These electric water heaters can be of external supply, or aCIAT supply like the electric loop heater or the ME electricwater heater modules, and up to a maximum of 4 capacitystages.
AUXILIARY HEATING MANAGEMENT BOARD
The auxiliary heating management board is an optional accessory allowing to a reversible AQUACIATpower machine the controlof 4 additional capacity stages in HEATING mode.This optional board is fitted on the units in the factory.
115 %
110 %
105 %
100 %
95 %
90 %
DEGIPAC
-15 ˚C -5 ˚C 0 ˚C 5 ˚C 15 ˚C 25 ˚C
StandardCO
P g
ain
06-f
ebru
ary
13-f
ebru
ary
20-f
ebru
ary
27-f
ebru
ary
06-m
arc
h
13-m
arc
h
20-m
arc
h
Boileroperating
Hea
ting
outp
ut in
kW
Heat pump operating
Decrease of the house
Period of season of stocking(different values following regions)climatic zone H1 (Lyon - French)
External temperature
5 d. 26 d. 66 d. 112 d. 21 d.
days
Heatpump
+boiler Heat pump
Bo
iler
on
ly
AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
AQUACIAT POWER
18
Water chillersHeat pumps
LD - ILD (H - C) SERIES DESUPERHEATER (HEAT EXCHANGER)Heat from gases released by the compressors can be recovered directly by a type of heat exchanger - called a desuperheater -
on an AQUACIATpower unit to produce free, additional hot water.
On reversible units, the desuperheater option can be used in both heating and cooling modes.
This optional configuration requires assembly in our factories.
■ Example of recovery with a desuperheater
AQUACIAT powerRecovery Water flow rate Pressure drop Cooling capacity Power input
Cr (kW) qv (m3/h) Pd (mWC) Cc (kW) Pi (kW)
1200 V 88 15,1 3,7 334 110,71500 V 98 16,8 3,3 380 127,61650 V 112 19,3 2,7 438 145,61800 V 126 21,7 3,4 493 163,2
Note: recovery performance is based on LD cooling-only models:➨ unit under full load in cooling mode and under nominal conditions (chilled water: +12 °C / +7 °C; outdoor air: +35 °C).➨ recovery hot water temperatures of +55 °C / +60 °C
Discharge
Compressor 1
Compressor 2
OilWater
Air-cooledcondenser
Desuperheater
■ Refrigeration circuit diagram
The refrigeration diagram opposite illustrates a 1200 sizereversible unit with a desuperheater on each refrigerationcircuit.
For heat recovery to be possible, the unit must beoperating in cooling or heating mode.
For the same cooling or heating capacity, thedesuperheater provides a source of free hot water andlowers the unit’s electrical power consumption.
To ensure that the unit is commissioned and operatesunder the right conditions, the desuperheater water loopmust be as short as possible. This will ensure that warm-up is gradual with a water flow rate of 10% its nominalvalue and that the nominal flow rate of the return water atthe desuperheater inlet is +50 °C.
We therefore recommend a hydraulic circuit configurationthat makes it possible to achieve superheated water in thedesuperheater very quickly (three-way valve + thermostat+ sensor on desuperheater water inlet)
The thermostat setpoint must be at least +50 °C.
Comment: special attention should be paid when selectingthe expansion vessel, as the temperature of the recoverywater circuit can reach 120 °C if the accelerator pump isturned off or if no hot water is consumed.
19AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
CAPACITIES WITH PARTIAL HEAT RECOVERY
COOLING ONLY units
Pf: Acceptable cooling capacity for delta T based on operating limitsPa: Compressor + fan input powerPde: Heating capacity recovered in desuperheaterQde : Water flow rate in desuperheater
R4
10
AH
IGH
-PE
RF
OR
MA
NC
E -
HP
LLDDLLDDCCLLDDHH
Des
uper
heat
erw
ater
tem
pera
ture
(°C
)
Evap
orat
or w
ater
outle
t tem
p.(°
C) CONDENSER AIR INLET TEMPERATURE (°C)
25 30 35 40 44 48Pf Pa Pde Qde Pf Pa Pde Qde Pf Pa Pde Qde Pf Pa Pde Qde Pf Pa Pde Qde Pf Pa Pde Qde
AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
AQUACIAT POWER
20
Water chillersHeat pumps
CAPACITIES WITH PARTIAL HEAT RECOVERY
COOLING ONLY units
Pf: Acceptable cooling capacity for delta T based on operating limitsPa: Compressor + fan input powerPde: Heating capacity recovered in desuperheaterQde : Water flow rate in desuperheater
R4
10
AL
OW
NO
ISE
- L
N X
TR
A L
OW
NO
ISE
- X
LN
LLDDLLDDCCLLDDHH
Des
uper
heat
erw
ater
tem
pera
ture
(°C
)
Evap
orat
or w
ater
outle
t tem
p.(°
C) CONDENSER AIR INLET TEMPERATURE (°C)
25 30 35 40 44 48Pf Pa Pde Qde Pf Pa Pde Qde Pf Pa Pde Qde Pf Pa Pde Qde Pf Pa Pde Qde Pf Pa Pde Qde
21AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
Note: recovery performance is based on LD cooling-only models:➨ unit under full load in cooling mode and under nominal conditions (chilled water: +12°C/+7°C; outdoor air: +35°C).➨ recovery hot water temperatures of +40 °C / +45 °C
LD (H - C) SERIES - TOTAL RECOVERY WITH A HEAT EXCHANGER
Free, additional hot water is produced at medium temperature by adding an air-cooled condenser to each circuit. The air-cooledcondenser is placed upline of the air-cooled condenser on each circuit to recover all the heat released by the unit.
This option is available on cooling-only version units only.
■ Example of recovery with a condenser
AQUACIAT powerRecovery Water flow rate Pressure drop Cooling capacity Power input
Cr (kW) qv (m3/h) Pd (mWC) Cc (kW) Pi (kW)
1200 V 437 75 5,5 337 100,31500 V 502 86 4,8 384 117,31650 V 574 99 3,8 440 138,91800 V 648 111 4,6 498 150,6
Discharge
Compressor 1
Compressor 2
OilWater
Evaporator
Air-cooledcondenser
Water-cooledcondenser
■ Refrigeration circuit diagramThe refrigeration diagram opposite illustrates a 1200 sizecooling-only unit equipped with a water-cooled heat-recovery condenser on each refrigeration circuit.
For heat recovery to be possible, the unit must beoperating.
For the same cooling capacity, the heat-recoverycondenser provides a source of free hot water and lowersthe unit's electrical power consumption.
■ Hydraulic connections: configurationand precautionsTo ensure that the unit is commissioned and operatesunder good conditions, the recovery condenser water loopmust be as short as possible. This will ensure that warm-up is gradual and, in turn, ensure that the water inlettemperature is always at least +20°C.
We therefore recommend a hydraulic circuit configurationthat makes it possible to achieve hot water at thistemperature in the heat-recovery condenser (three-wayvalve + thermostat + sensor on heat-recovery condenserwater inlet. This will ensure that warm-up is gradual and, inturn, ensure that the water inlet temperature is always atleast +20°C.
Comment:
Special attention should be paid when selecting theexpansion vessel, as the temperature of the recoverywater circuit can reach 120°C if the accelerator pump isturned off or if no hot water is consumed.
AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
AQUACIAT POWER
22
Water chillersHeat pumps
CAPACITIES WITH TOTAL RECOVERY
COOLING ONLY units
Pf: Acceptable cooling capacity for delta T based on operating limits Glycol/water mix requiredPai: Compressor power input Calculated fouling: 0.00005 m2 °C/WPre: Acceptable recovered heating capacity for delta T based on operating limits
R4
10
A
LLDDLLDDCCLLDDHH
CONDENSER WATER OUTLET TEMPERATURE (°C)
Evaporatorwater outlet
temperature (°C)
30 35 40 45 50Pf Pa Pre Pf Pa Pre Pf Pa Pre Pf Pa Pre Pf Pa Pre
23AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
SOUND LEVELS
The distinguishing feature of the AQUACIATpower range is its rigorous design incorporating “noiseless” assembly techniqueswhich reduce vibration and noise.
■ Compressors on anti-vibration mounts
■ Pipes dissociated from body of unit
■ Low-speed fans
■ Automatic air-flow adjustment
■ Units on anti-vibration mounts (option)
HIGH-PERFORMANCE versions - HP
■ Sound power levels ref. 2x10-12 Pi ± 3 dB
AQUACIATpowerSOUND POWER LEVEL SPECTRUM (dB) Overall
1200 V 51 52 54 50 48 40 33 551500 V 48 50 52 50 49 39 31 551650 V 49 51 52 51 49 39 32 551800 V 49 51 51 52 50 39 31 56
Models LDH - ILDH 1200V - 1500VXTRA LOW NOISE version
NOTE: Sound pressure levels depend on each system. As such, the levels listed above are given for information only.
We remind you that only sound power levels are comparable and certified.
As per ISO 3744: Lp = Lw - 10 log S
AQ
UA
CIA
T P
OW
ER
Water chillersHeat pumps
25AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
GLYCOL/WATER MIXTURE COEFFICIENTS
CORRECTION POSITIVE TEMP. NEGATIVE TEMP.
K Calc. method K Calc. method
Evap
orat
or
Cooling cap. 0,98 Pfc = Pf x 0,98 1,00 See sel. table
Chilled waterflow rate
1,05Pcf x 0.86
Qc = x 1,05ΔT
1,10Pcf x 0.86
Qc = x 1,10ΔT
Water pressuredrop
1,15 ΔPc = ΔP x 1,15 1,30 ΔPc = ΔP x 1,30
Avg. temp. gr. 12 / 7 °C See operating limits
Reco
very
cond
ense
r
Cooling cap. 0,97 Pfc = Pf x 0,97
Hot waterflow rate
1,05(Pcf+Pa) x 0.86
Qc = x 1,05ΔT
RPW 1,10 ΔPc = ΔP x 1,10
Avg. temp. gr. 35 / 40 °C
Evap
orat
or +
Reco
very
con
dens
er
Cooling cap. 0,95 Pfc = Pf x 0,95 0,97 Pfc = Pf x 0,97
Chilled waterflow rate
1,05Pcf x 0.86
Qc = x 1,05ΔT
1,10Pcf x 0.86
Qc = x 1,10ΔT
Water pressuredrop in evaporator
1,15 ΔPc = ΔP x 1,15 1,30 ΔPc = ΔP x 1,30
Hot waterflow rate
1,05(Pcf+Pa) x 0.86
Qc = x 1,05ΔT
1,05(Pcf+Pa) x 0.86
Qc = x 1,05ΔT
Water pressuredrop in condenser
1,10 ΔPc = ΔP x 1,10 1,10 ΔPc = ΔP x 1,10
MINIMUM WATER VOLUME (COOLING MODE)The Connect controller uses anticipation logic making it particularly flexible in adjusting operation to changes in settings,particularly on low-volume hydraulic systems.
By adjusting compressor running times, it prevents short-cycle protection cycles from starting and, in most cases, eliminates theneed for a buffer tank.
Comment: A buffer tank may be installed on systems used in industrial processes that may require highly stable watertemperatures or on systems with highly fluctuating heat loads.
In the case of heat pumps, the drop in water temperature caused by defrosting must be factored into the volume of the hot watertank.
■ 30% concentration by weight of glycol (MEG)
■ Solution freezing point: -17.5°C.
K: correction factors
Values read in instructions:
Cc: cooling capacity based on selection tables
Pi: compressor power input based on selection tables
DP: water pressure drop based on the curves, for thecorresponding corrected flow rate (Qc)
Values corrected using the above calculations:
Ccc: corrected cooling capacity
Qc: corrected flow rate (chilled water or hot water)
DHc: corrected water pressure drop (evaporator or condenser)
AQUACIATpower 1200 V 1500 V 1650 V 1800 V
min. system capacity (litres) 1171 871 905 1133
EVAPORATOR LIMITS
The curves show the minimum andmaximum allowable temperature differencesfor chilled water or glycol/water solutionbased on the outlet temperature.
Suggested translation for "Ground fixation":The frame may be mounted to the ground (bolts not supplied by CIAT).The hardness is to be defined based on the weight and centre of gravity of the unit.
LDH - ILDH version only (hydraulic module)L8 288 288L9 453 453L10 5215 6581
Top viewof FRAME
Hyd
raul
ic m
odul
e si
de
Elec
trics
box
sid
e
ANTI-VIBRATION MOUNT 50 x 700 x 25 ANTI-VIBRATION MOUNT 50 x 700 x 25
ANTI-VIBRATION MOUNT 50 x 700 x 25 ANTI-VIBRATION MOUNT 50 x 700 x 25
ANTI-VIBRATION MOUNT 50 x 700 x 25 ANTI-VIBRATION MOUNT 50 x 700 x 25
AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
AQUACIAT POWER
34
Water chillersHeat pumps
AQUACIATpower
Installation recommendations
EXAMPLES OF HYDRAULIC CONNECTION DIAGRAMS
air-to-water reversible unitpsl : zero pump water pressure switchv3v : three-way valvev2v : two-way valvee : expansion vesselc : retaining valvem : gaugea : water filling
b : mixer tankr : shut-off valvevr : control valves : safety valvepe : accelerator pumpt : temperature sensor pocketFS : water flow switch
Note: The principle diagrams herein are provided for information only.Under no circumstances do they constitute actual installation diagrams.
General comments:
p: air vents at pipe high points v: drain nozzles at pipe low points
FS
a
tvr
sm
r
v
b
p
e
pe
c
psl
v3v
FS
■ Water quality requirementsImportant: A 800 micron water filter must be placed on theunit’s water inlet during installation.
The quality of the water used has a direct impact on the correctoperation of the unit and its service life. This holds particularlytrue if the water used may clog or corrode components orpromote the growth of algae or microorganisms.
The water must be tested to determine whether it is suitable forthe unit, and whether it will have to be chemically treated, or ifa water softening/demineralising system will have to beinstalled.
The results of the test must confirm whether the water iscompatible with the following various materials used on theunit:
- 99.9% copper tubes brazed with copper and silver,- threaded bronze couplings or flat steel flanges, depending onthe unit model,- plate heat exchangers and connections made of AISI316/DIN 1.4401 stainless steel brazed with copper and silver.
Important: Failure to follow these instructions will result in theimmediate voiding of the unit warranty.
■ Lifting and handlingThe utmost safety precautions must be taken when lifting andhandling the unit.
Always follow the lifting diagram on the unit and in theinstallation, operation, commissioning and maintenancemanual.
Before attempting to lift the unit, make sure the path leading toits intended location is free from obstacles.
Always keep the unit vertical when moving it. Never tip it orplace it on its side.
■ LocationThe standard version of AQUACIATpower is designed foroutdoor installation.
Precautions should be taken to protect it from freezingtemperatures.
Special attention should be paid to ensure sufficient free space(including at the top) to allow maintenance.
AQ
UA
CIA
T P
OW
ER
Water chillersHeat pumps
35AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
The unit must be placed on a perfectly level, fireproof surfacestrong enough to support it once charged.
Care must be taken to keep noise generated by equipment toa minimum.
Contact an acoustical engineer to determine, and mitigate, thevarious sources of noise in the room where the unit will beinstalled.
Flexible couplings must be placed over pipes (available asoptions).
Reversible units installed in areas of snowfall or heavy frostshould be raised approx. 300 mm off the floor or ground.
■ Assembly of separately suppliedaccessories:A number of optional accessories may be delivered separatelyand installed on the unit at its location.
Always follow the instructions in the installation, operation,commissioning and maintenance manual.
■ Electrical connectionsAlways follow the instructions in the installation, operation,commissioning and maintenance manual.
All information concerning electrical connections is stated onthe wiring diagrams provided with the unit. Always follow thisinformation.
Electrical connections must be made in accordance with bestcurrent practices and applicable standards and regulations.
Electrical connections to be made on site:
. unit electrical power supply
. outdoor operation authorisation (optional)
. information feedback (option)
It should be noted that the unit’s electrical system is notprotected against lightning strikes.
Components to protect against transient voltage surges mustbe installed on the system and inside the electrical powersupply unit.
■ Pipe connectionsAlways follow the instructions in the installation, operation,commissioning and maintenance manual.
All pipes must be correctly aligned and slope toward thesystem’s drain valve.
Pipes must be installed to allow sufficient access to the panelsand fitted with heat insulation.
Pipe hangers and clamps must be separate to avoid vibrationsand placing pressure on the unit.
Water shut-off and control valves must be fitted when the unitis installed.
- Pipe connections to be made on site:
. system water supply with pressure-reducing valve
. evaporator, condenser and drain
- The following are a few examples of accessories essential toany hydraulic system and which must also be installed:
. thermostatically controlled valve on the condenser water outlet to regulate the flow of cooling water (heat pump inheating mode)
. water expansion vessel
. drain nozzles at pipe low points
. exchanger shut-off valves equipped with filters
. air vents at pipe high points
. check the system’s water content (install a bufferwater tank if necessary)
. flexible couplings on exchanger inlets and outlets,
. manual flow rate control valves
. thermometers on each water inlet and outlet to allowall the necessary checks during start-up andmaintenance
Important:
- Pressure in the water circuits below 4 bar.
- Place the expansion vessel before the pump.
- Do not place any valves on the expansion vessel.
- Make sure the water circulation pumps are placed directly atthe exchanger inlets.
- Make sure the pressure of the water drawn in by thecirculation pumps is greater than or equal to the requiredminimum NPSH, particularly if the water circuits are open.
- Test the water quality in accordance with the relevanttechnical requirements.
- Protect the unit and hydraulic system from freezingtemperatures (such as by including a drain). If glycol is addedto prevent freezing, check its type and concentrationbeforehand.
- Before making any final hydraulic connections, flush the pipeswith clean water to remove any debris.
■ Commissioning
AQUACIATpower units must be commissioned by CIAT or aCIAT-approved firm.
Always follow the instructions in the installation, operation,commissioning and maintenance manual.
Partial list of precommissioning checks:
- Correct positioning of unit,
- Power supply protections,
- Phases and direction of rotation,
- Wiring connections on unit,
- Direction of flow in unit,
- Cleanliness of water circuit,
- Water flow rate at specified value,
- Pressure in the refrigeration circuit,
- Direction of rotation of compressors,
- Water pressure drops and flow rates,
- Operating readings.
■ MaintenanceSpecific preventive maintenance operations must be regularlyperformed on the unit by CIAT-approved firms.
The unit’s operating readings are to be recorded on a checklistto be sent to CIAT.
Refer to and follow the relevant instructions in the installation,operation, commissioning and maintenance manual.
You must take out a maintenance contract with a CIAT-approved refrigeration equipment specialist. Such a contract isrequired even during the warranty period.
AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.621 B
AQUACIAT POWER
36
Water chillersHeat pumps
- Multilanguage LCD(2 lines of 20 characters each)
- Pressure and temperature readings
- Pump management
- Communication
Available voltage-free contact inputs and outputs:
MODBUS-JBUS open Protocol (standard)LONWORKS Protocol (option)
RS-485 OUTPUT AS STANDARD
R E L AY B O A R D ( O P T I O N )
REMOTE-CONTROL UNIT (OPTION)
Operation and design same as displayconsole
Available outputs:
- Water flow fault- Frost protection fault- Pump fault- Fan fault- Low and high pressure fault- Compressor safety fault- Discharge temperature fault- Compressor operation fault
CONNECT CONTROL
USER-FRIENDLY INTERFACE CONSOLE
MULTICONNECT MULTI-UNIT MANAGEMENT(OPTION)
Main functions available:- Management of up to 8 units on a single
water loop- Management in cooling mode (water
chiller) or heating mode (heat pump)- Management of chilled-water or hot-water
pumps- Centralised management of a backup unit- Unit load shedding- System time programming- Energy storage mode management- Fault management on each unit- Unit running time balancing- Integrated Modbus BMS link for obtaining
information on unit operation and faults
1200 à 1800
This document is non-contractual.As part of its policy of continual product improvement, CIAT reserves the right to make any technical modification it feels appropriate without prior notification.