CARRIER - HYDRONIC SYSTEMS. Commercial air conditioning up to 300 kw

Transcription

1 CARRIER - HYDRONIC SYSTEMS Commercial air conditioning up to 300 kw

2 WE ARE TAKING EVERYTHING INTO CONSIDERATION TO OPTIMISE EVERYONE S COMFORT For Carrier it would be unthinkable to design a system without considering the full suitability and compatibility of all the elements. Therefore we have developed a system that ensures compatibility during all stages: building design, installation and operation. Each element is studied together with the other elements. In fact, all components used speak the same language: Acommon language for a unique design. This way there is no risk of mis-communication or errors when malfunctions occur. IS THIS NOT THE ULTIMATE IN COMFORT FOR EACH AND EVERYBODY? COLD/HOT WATER PRODUCTION 30RY/RYH 30RW 30RA/RH Hot water production CONTROL CRC wired controller System Manager Infra red controller AIR DISTRIBUTION 42N 42WH 42EL 42UK 42GW 2

3 THE AQUASMART SYSTEM SYSTEM INTEGRITY THROUGH COMPATIBILITY OF ITS COMPONENTS In order to make your work easier, each system component has been designed for fast and easy assembly, connection and operation. No more searching for components from different suppliers - a single partner for design, ordering and invoicing. Acomplete new standard for trouble-free operation of your installation! Selection of each element is facilitated by the powerful and user-friendly selection program, and remote monitoring of system operation reduces diagnostic and intervention time. This offers you round-the-clock service. 3

4 Carrier has always guaranteed its customers complete confidence, whatever the weather. Different seasons and unexpected temperature differences are no problem. The Aquasmart system intelligently balances weather conditions and your comfort to optimise your well-being. Simplicity with complete peace-of-mind! OUR MAIN OBJECTIVE: YEAR-ROUND INDIVIDUAL COMFORT 4 SPRING, SUMMER, AUTUMN OR WINTER - AQUASMART ENSURES IMMEDIATE RESPONSE Efficiency that is shown in all aspects of air conditioning. Whether the thermometer falls below -10 C or exceeds the 45 C threshold, the Aquasmart system responds by rapidly adjusting the air conditioning to the environment and to your requirements. AUTOMATIC COOLING/HEATING CONTROL Based on the demands of all occupants, the Aquasmart system controls the change-over from hot water to cold water production. Depending on the outside conditions, the Aquasmart system automatically adjusts the leaving water temperature in heating or cooling mode. Perfect control! ASSURED OCCUPANCY COMFORT Aquasmart maintains room conditions to within ± 1 K of set-point ensuring comfort levels are maintained at all times whatever the weather!

5 PROGRAMMED ENERGY SAVINGS With the Aquasmart system, control of energy consumption becomes child s play. In fact, a simple, user-friendly program permits control of up to 128 terminals in 32 zones. Thus each zone has the desired temperature, taking into consideration the expectations of the occupants and the activities of the organisation. Minimum and maximum temperature values and fan speeds are individually adjustable by the occupant. This way everybody finds optimal comfort without paying too much. FROM CONTROL TO INDIVIDUAL CHOICE PROGRAMMED OR INDIVIDUAL INPUTS AND OUTPUTS HOLIDAY PERIODS PRE-PROGRAMMED EARLY START UP INDIVIDUAL TEMPERATURE ADJUSTMENT PRE-PROGRAMMED ECONOMY MODE 18H = ECONOMY MODE WITH OPTION TO SELECT OCCUPIED MODE BY HOUR ONE-DAY ENERGY CHART Aquasmart begins to calculate the heating and cooling requirements to achieve the programmed temperature around 8.00 o clock when the employees arrive. Comfort conditions set in. Each zone maintains a temperature of 21 C. Everyone can change this setting until noon. During the lunch-time break an economy mode is programmed, but during this time the occupant can reselect the occupied mode. The occupied mode restarts, applying the data selected by each occupant. The economy mode again takes effect. But each occupant can at any time reselect the occupied mode for one hour, if he/ she wants to stay longer in the office. When he/she leaves, the economy mode is again activated. 5

6 AQUASMART, THE BEST IN TECHNOLOGY COLD/HOT WATER PRODUCTION THE "ALL-IN-ONE" CONCEPT SAVES TIME Simplify your life and reduce installation time. All Aquasnap chillers and heat pumps are supplied complete with a hydronic module. This packaged unit is tested and installed in the factory, and also incorporates the refrigerant system, a water pump, an expansion valve, a water flow switch and the electrical wiring. Everything is built-in. All you need to do is bolt down, plug in and you are ready! Child s play. SUPER-QUIET OPERATION With the scroll compressor and the high-technology fans everything is designed for quiet, discreet operation. At night-time, when the thermal load decreases, the fans adjust their speed for even quieter operation. Good night! REAL SPACE SAVINGS Reduced weight, low profile, integrated hydronic components - the Aquasnap is very compact and requires minimum space. Moreover, as the compressor is protected by the autoadaptive Carrier-patented Pro-Dialog control system, a buffer tank is not required. And this means extra space and extra savings. ECOLOGY AT NO EXTRA COST Aquasnap was especially designed for the new ecological refrigerants: HFC 410Afor the Junior range and HFC 407C for the more powerful units. All Aquasnap chillers and heat pumps are harmless to the environment and the ozone layer. The solution for investment at no extra cost. 6

7 CONTROL All Aquasnap units are equipped with Pro-Dialog control, which combines high efficiency with great operating simplicity. Pro-Dialog monitors all safety parameters and precisely controls the operation of compressor, fan and water pump for optimal energy usage. Based on the outdoor conditions Pro-Dialog adjusts the leaving water temperature and controls supplementary heating. The Aquasnap chiller permanently communicates with the System Manager via a simple, three-wire communication bus. The compact System Manager supervises, analyses and determines the equipment operating mode, based on the individual requirements of each occupant. Equipped with an 8-line matrix screen and a simplified keyboard with four menu keys, two up and down keys and four navigation keys, it ensures ease-of use. It has two access levels, one for the installer with security access and the other for the building supervisor to permit interrogation and modification of the time schedules and the zone set points. Within the limits set at installation, the CRC user interface allows each occupant to modify fan speed, set point temperature, motorised grille louvres and to change over from the Comfort to the Eco mode and vice-versa at any time. These simple and intuitive operations prevent misunderstandings that frequently require intervention from an installer. GUARANTEED EFFICIENCY FROM -10 C TO + 45 C No additional accessories! With the Pro-Dialog control system with intelligent fan speed control all Aquasnap liquid chillers operate down to -10 C. Whatever the climate, the Aquasnap 30RH heat pumps ensure normal hot water production. The patented, auto-adaptive Pro-Dialog control guarantees optimal reliability and increased heating capacity as well as perfect defrost cycle control. AIR DISTRIBUTION The technologies of the state-of-the-art fan, heat exchanger, acoustics and terminal unit size reduction are complemented by the addition of an electronic control system, guaranteeing precise and reliable control of each component. Depending on its configuration, each terminal unit can be supplied complete with valves, electric heater, condensate pump and temperature sensors, all factory-installed and tested. The electronic control is the same for each terminal unit type and configured and tested at the end of the assembly line. 7

8 AQUASMART SYSTEM TYPES Aquasmart is available in a number of adaptable configurations to best suit the application needs. Three that satisfy the most common applications are 2-pipe cooling only, 2-pipe changeover (with/without electric heaters in the terminals) and 4-pipe cooling and heating. 2-PIPE COOLING ONLY SYSTEMS This type of system is predominantly used where high internal gains are expected within the building or where there is some form of heating system already in use within the structure. The main challenge that designers face is the integration of the cooling and heating systems to prevent each competing with the other and therefore inefficiency in terms of space conditions and energy consumed during operating periods. Aquasmart manages these issues by: time schedule control of the boilers direct control of heating zone control valves or control of zones of under-floor heating linked to the local fan coil units. In either solution the system must be carefully zoned to prevent over-heating or over-cooling of the building. This type of direct integration has previously only been achievable using very complex and expensive BMS controls and is therefore found on larger systems and buildings. With the advent of part L building regulations and with future legislation addressing building operating costs it becomes more important than ever that 2-pipe cooling only systems are flexible and a totally integrated part of the air conditioning system of a building as is achievable today with AQUASMART. System type 2-pipe cooling only 2-PIPE COOLING AND HEATING SY The correct design and installation of this type of system can provide simultaneous heating and cooling in individual areas within a building. It lends itself ideally for offices, hotels, and restaurants up to 2500 m 2. The Aquasmart system offers total integration as it can monitor both heating and cooling demands from the building, enabling the system to choose the most suitable mode to meet the demand. To ensure optimum operation the system should be zoned with alike areas or needs grouped together. The system should be set for cooling priority operation to ensure that the system satisfies those areas requiring APPLICATION Small office Medium office Large size office Hot >500 m 2 > m 2 > m 2 Refurbishment / New 2-pipe cooling and heating 4-pipe cooling and heating 8 * Use in an independent system - **Air-cooled range

9 STEMS WITH ELECTRIC HEATERS cooling whilst also allowing low-power electric heaters (0.750 kw) to provide heat to those areas demanding heating. If the demand for heating increases above the total input power of the heat pump, the system switches the unit to heat mode until the number of zones demanding heating reaches zero. In very cold temperatures (below 2-3 C) the system can use both hot water and electric heaters, the priority being given to water over electric heating. Temperature control for this type of system is paramount to occupant comfort, and Aquasmart installations can control space conditions to ± 1 K with lower energy consumption than systems using the latest direct-expansion technology. 4-PIPE HEATING & COOLING SYSTEMS This traditional system is generally used in larger building applications where the cost of installing boilers and chillers becomes more affordable within the overall system cost. The main challenge facing designers with the control of this system type is the integration of the cooling and heating plant to prevent each system competing against the other in the intermediate seasons. Now Aquasmart offers an integrated solution. The System Manager has been designed to manage either 2-pipe & 4-pipe systems and incorporating the fresh air handling unit and the boiler time clock control to ensure comfort within the building environment. Each fan coil unit controls its local space temperature through modulation of control valves and fan speed to achieve ideal conditions within the space. This flexibility and management means that Aquasmart can replace the more expensive Building Management Systems in many applications reducing the total system cost considerably. In addition, the communication and fault monitoring capabilities available to link fan coil units, chillers, air handling units and boilers make the Aquasmart system the ideal choice for this type of installation. FLEXIBILITY SYSTEM CAPACITY els Restaurants Computer rooms kw * * Extension/Expansion to an existing ** building system up to 128 terminals (213) Extension/Expansion to an existing building system up to 128 terminals Extension/Expansion to an existing building system up to 128 terminals 9

10 SYSTEM DESIGN CONSIDERATIO Any successful HVAC system depends upon a number of factors including correct and thoughtful design and installation. Some critical and frequently overlooked factors affecting the comfort of the occupants include building orientation, internal zoning, and of course the eventual use of the building. ZONING Zoning considerations should reflect a building s orientation as well as taking into account occupancy use and time schedules. Terminal units that serve zones with similar thermal characteristics will provide the best performance and comfort conditions. The same applies to units grouped on the same or similar time schedules. Examples of this practice would be to group areas such as photocopier facilities, open plan areas or offices taking into account the exposure to solar effect. COMPUTER ROOMS These areas typically require 24-hour cooling 7 days a week depending on the system chosen* for the application. Thought should be given as to whether to install a dedicated system. (* 2-pipe cooling only and not 2-pipe changeover!) Factors influencing this decision may include: the ratio of computer area cooling load to total system capacity and the building occupancy time schedule i.e.: normal office hours or 24-hour operation. INDOOR AIR QUALITY (IAQ) Comfort and good indoor air quality are mainly related to correct temperature and humidity control within the occupied space. AQUASMART controls space temperatures to ± 1 K. Research has shown that exposure to relative humidity below 35%, over long periods of time, leads to dryness in the eyes, nose and throat. In hydronic systems this problem does not exist. Good practice indicates that conditions between C / 50% RH winter and C / 50% RH summer are acceptable, and complaints increase substantially with variations exceeding 3 K. AQUASMART leads the fight for higher IAQ levels, offering fan coil units, incorporating the latest AIR4LIFE technology and increased filtration levels, air purification and CO 2 management. 10

11 NS SYSTEM ECONOMIES Predicting the actual annual energy consumption of any air conditioning system is a complex and difficult undertaking that needs to consider a number of inter-related factors. The building type, the building load profile, the system performance at part-load and off-design conditions and the local weather pattern all have a significant influence on the client's annual energy bills. Despite these difficulties, system designers are now obliged to make estimates of the energy consumption and to ensure that this meets certain targets. Unsurprisingly, the methodologies available for making these estimates are somewhat simplistic and tend to concentrate on the performance of the plant at the design condition. In practise equipment operates for over 95% of its time at off-design conditions, at substantially improved efficiencies, as the table below illustrates Design day Average part load Cooling COP Heating COP Results from a recent long-term study of the energy consumption of a number of systems offer designers and owners some useful, practical guidance on the performance of systems. As the graph below illustrates, well-designed integrated systems can offer energy efficiencies considerably better than for stand-alone systems and can meet or exceed current recommendations of best practice. kwh/m Aquasmart DX Splits Results Best practice Typical VRF heat recovry A B The report also highlights the importance of operational factors in determining the energy performance of a system. With its comprehensive time clock, scheduling and set back facilities Aquasmart offers considerable opportunities for further energy savings through the optimal management of the system. A - FILTER - A filter captures the particles (up to one micron) with an improved efficiency of 30 to 45%. The filter life has also been doubled. B - AIR PURIFIER - An air purifier, using a photocatalytic oxidation process (activated by UV lamps) degrades the harmful substances and unpleasant smells to inoffensive elements. - The UV lamps render the air-borne pollutants (bacteria, viruses, legionellae etc.) harmless 11

12 INSTALLATION INNOVATION Aquasmart is a hydronic solution, compatible with traditional materials and practices, whilst allowing designers and installers to innovate and benefit from the latest technologies and advances in materials and installation practices. Two examples include the use of high-density polyethylene (HDP) pipework material and the latest water distribution system technologies. Both combine to offer reduced installation material and labour time costs. HIGH-DENSITY POLYETHYLENE (HDP) PIPEWORK This is a flexible material with a 25-year minimum lifetime guarantee offering low friction loss and no corrosion. A flexible material benefits from a reduction in the number of elbows and fittings required and that means a reduced risk of leaks. Additionally the simplified installation techniques are less demanding than for traditional materials whilst offering the same level of quality. The resulting time savings, combined with the flexibility of the material make it ideal for refurbishment projects. WATER DISTRIBUTION SYSTEM Header technology The use of manifold systems offers a fast, flexible and economical alternative to traditional distribution systems. The manifold allows for: Fewer elbows and connections when used with flexible pipework Automatic venting Fast, accurate water balancing and reduced commissioning time as each terminal may be isolated and the water flow balanced from the manifold WATER FROM OUTDOOR UNITS AUTOMATIC AIR VENT TEMPERATURE GAUGE TEMPERATURE GAUGE WATER TO INDOOR UNITS WATER FLOW SETTERS FLEXIBLE POLYETHYLENE PIPE ARMAFLEX INSULATION PROTECTIVE CONDUIT WATER FROM OUTDOOR UNITS WATER FROM INDOOR UNITS 12

13 INSTALLATION PRICE GUIDE USING HDP FLEXIBLE PIPEWORK A quick estimate of the installed system cost* using innovative plastic pipework can be made following three simple steps: - Step one: Determine the office density for each fan coil type by dividing the total floor area (m 2 ) by the number of offices or zones to obtain the fan coil office density. - Step two: Enter the graph, using the calculated density, and follow the line to the intersection with the required terminal type curve. - Step three: From this point run a horizontal line to the cost per m 2 axis to determine an approximate installed cost for the system per square metre. * including controls and commissioning CEILING CASSETTE UNIT DUCTED UNIT CONSOLE UNIT Notes: 1. Cost includes the necessary Aquasmart local controller. 2. Cooling/heating allowances. 13

14 QUICK SELECTION OVERVIEW AQUASNAP JUNIOR 30RA/30RH 5-13 kw AQUASNAP 30RA/30RH kw AQUASNAP 30RA/RH kw SYSTEM MANAGER AQUASNAP DUCTABLE 30RY/RYH kw AQUASNAP 30RW kw 14

15 Always led by your requirements, Carrier offers a multitude of combinations that allow you to put together the solution that most suits your building type and environment. By combining chillers/heat pumps and terminal units in accordance with your architectural and budgetary constraints, Carrier always offers the right solution for each application. HIGH-WALL 42WH WIRED CRC FLEXIBILITY FOR COMPLETE PEACE-OF -MIND IDROFAN 42N CASSETTE 42GW 42EL 42UK WIRED CRC WIRED CRC Carrier offers all types of chilled-water terminal units to meet your individual requirements: cassettes, fan coil units, ductable units and high-wall units, available as 2-pipe change-over, 2-pipe with electric heating and 4-pipe versions, equipped and factory-tested with the same electronic controls, valves and sensors. Simplified as much as possible, installation is limited to the unit water connections and the installation of the communication bus. The real brain of the Aquasmart, the System Manager, is equipped with an intelligence that is comparable to that of a centralised Building Management System. It also permits complete configuration of your installation from automatic addressing of each terminal unit to individual setting of each element. If required, the system supervisor can modify time schedules and set points, and display the alarms for each component. The CRC user interface is equipped with a screen and a four-key keyboard, and offers simple access for the comfort control of each occupant. 15

16 AQUASNAP 30RA AIR-COOLED LIQUID CHILLERS 30RH AIR-TO-WATER HEAT PUMPS COMPACT UNITS WITH THE SAME BENEFITS AS LARGE UNITS Integrated hydronic module, quiet scroll compressor, ecological refrigerants, year-round operation in standard mode, Pro-Dialog controls, these smaller units include everything the larger ones have. With their compact size (width less than 500 mm) and their horizontal air discharge, they are ideal for residential and small commercial applications. They are easy to install close to the air conditioned zones e.g. on a balcony. AQUASNAP 30RA AIR-COOLED LIQUID CHILLERS 30RH AIR-TO-WATER HEAT PUMPS EVERYTHING STANDARD NOTHING OPTIONAL With their compact dimensions (only 1329 mm high for 30RA/RH ), quickly connected by a simple 3-phase cable without neutral, and the low operating noise of the scroll compressor and Flying Bird fan, these units are ideal for applications in new and refurbished buildings. Cooling conditions: outdoor air temperature 30 C, supply water temperature 6 C, return water temperature 12 C. - Heating conditions: outdoor air temperature +5 C dry bulb, supply water temperature 45 C ** Sound pressure is measured at 10 m distance. - *First value refers to 230 V unit. - Weights given for 30RH, single-pump version. CHILLER/HEAT P AQUASNAP THE A 30RA Total cooling capacity kw /6.64* 7, ,2 Water flow rate l/s /0.26* 0, ,32 Water pressure drop kpa /6.0* Available water pressure kpa 50 45/53* Full load current A 15 18/7.5* RH Total cooling capacity kw /6.63* ,8 Total heating capacity kw /7.49* ,3 Water flow rate l/s /0.26* ,19 Water pressure drop kpa /6.0* Available water pressure kpa 52 42/43* Full load current A 14 18/6.5* ,7 Refrigerant type R410A R407C Compressor Scroll one hermetic scroll type Minimum system volume RA/RH l 17 22/ /63 78/80 93/89 116/104 Water circulating pump 3 speeds single speed centrifugal pump Sound pressure level** db(a) Sound power level db(a) Net dimensions (H/L/D) mm 590/800/ /800/ /800/ /1328/ /1503/478 Weight (with hydronic kit) kg Power supply V-ph-Hz / RA Total cooling capacity kw Water flow rate l/s ,2 Water pressure drop kpa Available water pressure kpa Full load current A 15 18/ RH Total cooling capacity kw Total heating capacity kw Water flow rate l/s ,78 Water pressure drop kpa Available water pressure kpa Refrigerant type R407C N of Scroll Compressor(s) Scroll one hermetic scroll type Minimum system volume RA/RH l 143/ / / / / / / / / / / /555 Water circulating pump one speed centrifugal pump Sound pressure level* db(a) Sound power level db(a) Net dimensions (H/L/D) mm 1329/1081/ /2278/ /2278/3318 Weight (with hydronic kit) kg Full load current A Power supply V-ph-Hz Cooling conditions: outdoor air temperature 30 C supply water temperature 6 C, return water temperature 12 C. - Heating conditions: outdoor air temperature -5 C dry bulb, supply water temperature 45 C. * Sound pressure is measured at 10 m distance. - Weights given for 30RH, single-pump version.

17 UMP SOLUTIONS LL-IN-ONE RANGE AQUASNAP 30RY DUCTABLE LIQUID CHILLERS FOR INDOOR INSTALLATION 30RYH REVERSIBLE DUCTABLE HEAT PUMPS FOR INDOOR INSTALLATION DUCTABLE AQUASNAP VERSION Neighbourhood constraints, limited roof space, architectural or aesthetic considerations: with only 870 mm width (30RY/RYH ), the Aquasnap is ideal for installation in a plant room. The chillers are installed inside the building, a quiet high-pressure fan permits ducting of the air supply and return. The axial fan is so simple to use, that it does not need to be adjusted after installation, nor does the belt need replacing. This ductable unit comes complete with everything! AQUASNAP 30RW WATER COOLED LIQUID CHILLERS SO MUCH EASIER, AS EVERYTHING IS BUILT-IN The intelligent design of the Aquasnap water-cooled liquid chiller includes all hydronic and control components to offer unrivalled installation simplicity: evaporator water pump, condenser water pump, expansion tanks, filters, safety accessories and even the drycooler fan control everything is incorporated in the chiller. 30RY Total cooling capacity kw RYH Total cooling capacity kw Heating capacity kw Refrigerant R407C Compressor: type/quantity scroll/1 scroll/2 Pump: type Single multicell pump Single multicell pump (dual pump option) Water-pump available pressure kpa Expansion tank volume l 8 12 Max.pressure available (fan) Pa Length mm Width mm Height mm 1329 Weight kg Cooling conditions: outdoor air temperature 30 C, supply water temperature 6 C, return water temperature 12 C. Heating conditions: outdoor air temperature +5 C dry bulb, supply water temperature 45 C 30RW Total cooling capacity* kw Refrigerant kw R407C No of refrigerant circuits kw Type/No. of compressors scroll/1 scroll/2 scroll/4 Evaporator Stainless steel plate heat exchanger Evaporator pump type kpa Monocell centrifugal Available evaporator water pump pressure kpa Condenser Stainless steel plate heat exchanger Condenser water pump Variable-speed monocell centrifugal Available condenser water pump pressure kpa Length mm Width mm Height mm Operating weight kg * Cooling conditions: Evaporator: 6/12 C, condenser 30/35 C 17

18 CASSETTE 42GW HIGH PERFORMANCE - QUIET OPERATION Considerably simplified installation. Extra slim (298 mm) and easy to handle, the 42GW can be integrated into false ceilings without problems. It offers more space, less weight and less installation time. New air quality new quality of life. The 42GW cassette was designed with 10% fresh air intake. This benefit facilitates room air renewal and improves its quality. Optional electrostatic and activated carbon filters contribute to exceptional air quality. Simplified maintenance: With the removable grille one person alone can carry out all maintenance and service tasks for all components. FAN COIL S Cooling: entering air temperature 23 C/50% RH, chilled water 6/12 C Heating: entering air temperature 21 C/50% RH, hot water 80/70 C * Cooling coil - ** Heating coil 2-Pipe 42GWC 42GWC 42GWC 42GWC 42GWC 42GWC 42GWD 42GWD 42GWD 42GWD 42GW Pipe + Electric heater 42GWE 42GWE 42GWE 42GWE 42GWE 42GWE Total cooling capacity kw Sensible cooling capacity kw Water flow* / ** l/s / / / /0.3 Water pressure drop kpa / / / /23.5 Heating capacity kw Electric heaters W Fan Centrifugal Air flow H l/s M l/s L l/s Power input W Sound pressure level db(a) 24/29/40 23/34/43 33/39/48 25/31/40 29/40/47 33/46/54 24/29/40 23/34/43 33/39/48 33/4654 Sound power level db(a) 33/38/49 32/43/52 42/48/57 34/40/49 38/49/56 42/55/63 33/38/49 32/43/52 42/48/57 42/55/63 Dimensions (L/D/H)* mm 298/575/ /825/ /575/575 Weight kg Power supply V-ph-Hz / Low-pressure hot water Change-over system 4-Pipe 18

19 OLUTIONS FAN COIL UNIT 42N PERFORMANCE AND FLEXIBILITY COMBINED Discreet and elegant. The 42N has a modern design that blends in harmoniously with most room decors. Improved performance! Available with two and four-pipes, the 42N offers additional capacity for the same size, since it is equipped with a high-performance coil. Vertical or horizontal! In order to facilitate installation the 42N can be installed vertically or horizontally without field modification. *Available with electric heater 42N Total cooling capacity** kw 0.64/ / / / / / /2.85 Sensible cooling capacity** kw 0.60/ / / / / / /2.81 Water flow** l/s 0.03/ / / / / / /0.11 Water pressure drop** kpa 3.22/ / / / / / /10.1 Heating capacity** kw -/2.02 -/3.44 -/4.14 -/5.66 -/6.04 -/6.84 -/7.71 Electric heaters W 500/ / /3000 Fan type Tangential or Centrifugal Centrifugal Air flow H l/s M l/s L l/s Power input W Sound pressure levels db(a) 25/35/41 27/35/41 30/41/47 35/45/51 38/47/52 38/49/54 45/54/61 Sound power levels db(a) 33/43/49 35/43/49 38/49/55 43/53/59 46/55/60 46/57/62 53/62/69 Dimensions (L/D/H)* Cabinet models mm 657/830/ /1030/ /1230/ /1430/220 Weight kg Dimensions (L/D/H)* Concealed models mm 618/599/ /799/ /999/ /1199/220 Weight kg Power supply V-ph-Hz / Cooling: entering air temperature 23 C/50% RH, chilled water 6/12 C Heating: entering air temperature 21 C/50% RH, hot water 80/70 C * Standard fan **2-pipe / 4-pipe 19

20 HIGH-WALL UNIT 42WH IDEAL FOR RESIDENTIAL AND HOTEL APPLICATIONS Discreet system integration. Can be installed on any wall or above a door frame for perfect discretion. Automatic temperature control. The 42WH has a standard cold draft prevention system in order to create the ideal conditions in the room. If the power supply is interrupted, the units restarts, without having to reset the operating parameters. With the pre-equipped wall panel the 42WH is easy to install and maintain. Filter change is simplified by direct front access. FAN COIL S 42WH 42WHC WHC WHC 028 Total cooling capacity kw Water flow l/s Water pressure drop* kpa 14/22* 19/30* 34/50* Heating capacity kw Air flow (L/M/H) l/s 59/72/83 59/72/83 59/72/83 Power imput W Sound pressure levels (L/M/H) db(a) 21/26/31 29/33/35 35/38/40 Sound power levels (L/M/H) db(a) 30/35/40 38/42/44 44/47/49 Unit weight kg Mounting panel weight kg Power supply V-ph-Hz (+/-10%) Length mm Width mm Height mm * Value with valves installed Cooling: entering air temperature 23 C/50% RH, chilled water 6/12 C Heating: entering air temperature 21 C/50% RH, hot water 40/45 C The sound pressure level is measured in a 100 m 3 with 0.5s reverbation time. 20

21 OLUTIONS DUCTED FAN COIL UNIT 42EL/42UK COMPACT EFFICIENCY Compact design for easy integration everywhere. The 42EL/42UK Aqualia offers maximum quality with the minimum number of easily accessible components. Fresh air that changes everything. Equipped with a fresh air intake connected to an air flow controller, the 42EL/42UK Aqualia permits intake and renewal of fresh air in accordance with local regulations and based on the room requirements. Silence that says a lot about comfort. Installed in the false ceiling or in a floor void it is neither seen nor heard. In fact, the 42EL/42UK Aqualia is only noticed, because of its high technology and its unobtrusiveness. 42EL Nominal air flow l/s Total cooling capacity kw Heating capacity kw Power supply V-ph-Hz (+/-10%) Operating weight kg Electric heaters (+/-10%) Heating capacity excluding fan heat (+5%/-10%) Pa Fan Centrifugal Heating capacity excluding fan heat * Pa Max. power input at 230 V W Fresh air connection External diameter 125 mm Minimum air flow (-10%/+20%) l/s Maximum air flow (-10%/+20%) l/s Net dimensions (HxLxD) mm 225/770/ /770/ /1000/ /1000/1185 Cooling: entering air temperature 23 C/50% RH, chilled water 6/12 C and medium air flow Heating: entering air temperature 21 C/50% RH, hot water 80 C * Without supply/return octopus 42UK Total cooling capacity kw Sensible cooling capacity kw Water flow l/s Water presure drop kpa Heating capacity kw Fan Direct-drive centrifugal Air flow (H/M/L) l/s 100/99/72 135/128/69 250/179/ /196/128 Sound pressure level db(a) 27/35/41 30/41/47 35/45/51 38/47/52 Sound power level db(a) 35/43/49 38/49/55 43/53/59 46/55/60 Length (standard/extended) mm 800/1000 Width mm Height mm 245 Power supply V-ph-Hz Cooling: entering air temperature 23 C/50% RH, chilled water 6/12 C Heating: entering air temperature 21 C/50% RH, hot water 80/70 C Air flow based on 30 Pa external resistance 21

22 INSTALLATION INNOVATION PIPEWORK SIZING AND INSTALLATION Following the selection of the fan coil and chiller unit(s) the next stage in a typical process is the choice and sizing of pipework materials. Normal practice is to firstly select the pipework from manifold to fan coil units. The following table is a quick selection guide and includes polyethylene materials where generally 35 mm, 25 mm, 20 mm or 16 mm O.D. is used. PIPEWORK SIZING CHART (FAN COIL UNIT) Flow rate l/s Steel (ID) 15 mm 15 mm 20 mm 20 mm 25 mm 32 mm 32 mm Copper (ID) 15 mm 15 mm 22 mm 22 mm 28 mm 28 mm 35 mm Polyethylene (OD) 16 mm 20 mm 25 mm 25 mm 35 mm 35 mm 35 mm Friction losses from water flowing through the pipe are low. For fixing, split rings, basket or cable trays may be used. After selecting the fan coil pipework, the pipework from chiller/heat pump to manifolds should be considered. The material used is usually either copper, steel, or ABS plastic and the following table offers a quick selection guide. Final pipework sizing should respect and be sized not exceeding a 500 Pa/m friction pressure loss and the connection size to a valve manifold set is either 1 or PIPEWORK SIZING CHART (CHILLER/HEAT PUMP) Flow rate l/s Steel (ID) 32 mm 32 mm 40 mm 50 mm 65 mm 80 mm 100 mm Copper (ID) 35 mm 35 mm 42 mm 54 mm 67 mm 76 mm 108 mm A commissioning set should be installed on the return pipe of each manifold set and an isolation valve on the supply pipe, whilst a main commissioning valve to relate total flow rate should be installed in close proximity to the chiller(s)/heat pump(s). The final pipework design should include pressurisation units, dosing pot and air separators as required. To complete the pipework design the total system water volume should be checked against guidelines. COMFORT APPLICATIONS Unit size Min. water volume l/s Unit size Min. water volume l/s

23 FREQUENTLY ASKED QUESTIONS HOW EFFICIENT IS AN AQUASMART SYSTEM? The Aquasmart system has been developed to incorporate the latest energy saving technologies which has allowed the system to achieve a power saving of 8 W/m 2 versus a similar direct-expansion solution (refer to page 11 for further details). HOW ACCURATE IS THE ROOM TEMPERATURE CONTROL? Using a chilled-water solution enables the system to achieve room temperature control of ± 1 K at normal operating conditions (refer to page 4 for further details). DOES THE SYSTEM HAVE AN OPTIMISED START ROUTINE? Yes - each individual time/temperature zone can be set up for SMART START which is an auto-adaptive algorithm starting the air conditioner early enough to ensure that the room condition is achieved at occupancy. WHAT IS DEFINED AS AN AQUASMART ZONE? The System Manager can be programmed with up to 32 different zones. Each of these zones can be programmed with: Occupied set point and dead band Unoccupied set point and dead band Start time ON Stop time OFF Holiday period OFF with frost protection working A zone can include one fan coil unit or up to 128 fan coil units. CAN EACH FAN COIL BE SWITCHED OFF MANUALLY? Each fan coil is equipped with the ability to be switched from occupied to unoccupied mode via a pair of volt-free contacts. This is ideal for use with hotel room switch cards or meeting rooms that are not used very often. CAN THE SYSTEM BE MONITORED VIA A MAIN PC, IF NECESSARY? Yes - the system can be integrated with any BMS system via a Carrier data port, or we can provide BMS system software with graphics options, if required. CAN CARRIER CONTROL OTHER HVAC EQUIPMENT? Yes - via a CCN control system, which is able to run any HVAC equipment from boilers, pumps, fans etc. 23

24 WIRING SPECIFICATION G UIDE PRIMARY BUS The primary bus connects the System Manager with the heat pumps or chillers equipped with Pro-Dialog control. The communication cable type is 3-core RS485, with shielding and screen 20 AWG twisted. The maximum length of the primary bus is 325 m without amplifier. The bus shielding on each component connected must be continuous; connect one and only one end of the bus shielding to the installation earth. If the primary communication cable exits from one building to another its shields must be connected to the ground terminal of the lighting suppressor in each building. PRIM The communications link between the devices is a daisy chain with no T taps or spurs allowed. When connecting the communications bus to the system devices. each of the three conductors must be used for the same signal type throughout the entire primary network. Signal (+) terminals must always be wired to signal CCN (+). Signal ground terminals must always be wired to CCN sign ground. Signal (-) terminals must always be wired to signal CCN (-). PRO-DIALOG CONTROL SECO SECONDARY BUS The secondary bus connects the System Manager to the fan coil terminal controllers. The communication cable type is 3-core RS485, with shielding and screen 20 AWG twisted. The maximum length of the secondary bus is 325 m without amplifier. The bus shielding on each terminal controller connected must be continuous; connect one and only one end of the bus shielding to the installation earth. The communications link between the terminal controllers is a daisy chain with no T taps or spurs allowed. When connecting the communications bus to the terminal controllers, each of the three conductors must be used for the same signal type throughout the entire secondary network. Signal (+) terminals must always be wired to signal CCN (+). Signal ground terminals must always be wired to CCN signal ground. Signal (-) terminals must always be wired to signal CCN (-). INFRA-RED CONTROLLER The recommended cable type for the secondary bus within the building is: Alpha Catrol C2528. Beldon

25 LINES ARY BUS STOP/START LOCAL BUS The local bus connects the Carrier Room Controller with the Fan Coil Terminal Controller. The communication cable type is 3-core RS485, with shielding and screen 20 AWG twisted. The maximum length of the primary bus is 150 m without amplifier. When connecting the local bus to the terminal controllers, each of the three conductors must be used for the same signal type. SYSTEM MANAGER HOT WATER PRODUCTION Signal (+) terminals must always be wired to signal CCN (+). Signal ground terminals must always be wired to CCN signal ground. Signal (-) terminals must always be wired to signal CCN (-). NDARY BUS 128 UNITS MAXIMUM LOCAL BUS WIRED CONTROLLER (CRC) Reference Function Size Type of cable* Max. cable length (m) Primary bus Links production units (chiller/boiler/ahu) to System Manager 3 x 0.5 mm 2 Shielded 325 Primary bus Links System Manager and internal terminal units 3 x 0.5 mm 2 Shielded 325 Local bus Links CRC with terminal units 3 x 0.5 mm Links terminal units 2 x 0.5 mm * Preferred manuafactured Beldon Alpha Carol C2528 For the chiller and fan coil electrical wiring please refer to the appropriate product documentation supplied with the units. 25

26 CASE STUDIES BHS BHS requires total reliability of performance and the knowledge that a defined specification can be duplicated accurately time and again in store after store. The latest BHS stores at Meadowhall, Sheffield, Ocean Terminal, Leith outside Edinburgh, and Uxbridge in the Home Counties have all had Aquasmart air conditioning systems installed to provide completely controllable environmental comfort for shoppers. Many aspects of Aquasmart attracted the specifier, the BHS Construction and Development Department. In their view it is the most environmentally-friendly system on the market. The reasons: This is water-based cooling with no refrigerant in the conditioned space. Materials are recyclable The system efficiency saves high percentages of energy compared with alternative solutions. And the manufacturing source has won environmental awards. It s nice for everyone. The system has been problem-free. It s never on my list of concerns. BHS sets all parameters centrally. In the Meadowhall store there is a restaurant with all its heat and odour, but a negative pressure zone is in effect and the system copes very well, and eliminates these problems. BROOMIELAW Nine Aquasmart two-pipe cooling systems were chosen for a landmark speculative commercial building on the WideClydeside development in Glasgow. The property development firm, Walker Group, working with consulting engineers Henderson Warnock, were attracted to Aquasmart by the flexibility and adaptability of the system, providing air conditioned comfort to any layout chosen by the tenants, whilst the Aquasmart System Manager ensures optimised system performance and reduced running costs. The contractor, N G Bailey, benefits from fan coil solutions delivered to site with controls and valves pre-fitted and factory tested, whilst the Aquasnap chillers include the hydronic module with pumps and pressurisation units reducing installation time and labour. 26

27 CAPITAL & COUNTIES Two split systems were replaced by an Aquasmart system to provide flexible, energy-efficient comfort to meeting rooms in the London offices of Liberty International plc. Liberty is the parent of successful London-based retail and commercial property business, Capital and Counties. The system, comprising an Aquasnap heat pump chiller and four cassette fan coils, is managed by the Aquasmart System Manager offering the flexibility to partition the meeting room and still ensure comfort conditions for all the occupants. To achieve the same level of comfort with traditional split systems, it would have been necessary to install at least one small BMS system. said Mr Hutchins the engineering manager for Capital & Counties. That would have added to the initial cost and over-complicated this small installation. Aquasmart was the most cost-effective solution. UNILEVER The Aquasmart system was the perfect solution to the challenge of providing sophisticated and flexible air conditioning in a refurbished 1960s building. The Grade II listed building was already served by an existing induction system and Carrier Global Chiller, and the new Aquasmart systems have been installed to meet the additional load of the recent office expansion. The Aquasnap chiller profile is low enough to meet strict local planning regulations, and the chiller supplies twenty-three cassettes serving the core office area and individual meeting rooms. Both chiller and terminal units were supplied respectively with factory-fitted hydronic components, tested and configured to operate as a system, optimising performance and hence running costs. The system, comprising an Aquasnap chiller and twentyfour cassette fan coils, is managed by the Aquasmart System Manager, offering the flexibility to partition the meeting room and still ensure comfort conditions for all the occupants. According to Steve Willett, Technical Manager: We have worked together with Carrier for many years and value the company s ability to generate new ideas and the right products. The Aquasmart system has proved the right solution to the various challenges we faced from local planning regulations, flexibility and controllability needs and of course environmental responsibility which is so important to us all here at Unilever. 27

28 Carrier Air Conditioning United Technologies House Guildford Road Leatherhead KT22 9UT Tel: Fax: A member of the United Technologies Corporation family No