14
APPLICATION STORIES NUOS - HEAT PUMP WATER HEATERS Heating Hot water Renewables
APPLICATION STORIESNUOS - HEAT PUMP WATER HEATERS
Heating Hot water Renewables
2
NUOS, a philosophy of energy eand total peace of mind
Working Principle1 - The refrigerant fluid crosses the evaporator and absorbs the heat from the air drawn in by the fan. This process
ensures that the refrigerant changes phase by evaporating.
2 - The compressor increases the pressure of the refrigerant gas which causes it to increase in temperature.
3 - Inside the condenser, the refrigerant gas passes its heat to the water contained inside the cylinder.This exchange process ensures that the refrigerant begins returning to its original liquid state by condensing.
4 - The refrigerant fluid loses further pressure and temperature by passing through the expansion valve, completely returning to its original state.
Inlet drawn from non-heated room (e.g. Garage, Utility Room, Basement) Exhaust ducted to outside
Inlet drawn from outside and exhaust also ducted to outside
3
FLEXIBLE PROGRAMMING
With the NUOS heat pump water heater, it is possible toset two water draw off times.
By monitoring both the stored water and the ambient airtemperatures NUOS will start automatically to ensure that the stored water reaches the desiredtemperature at the time set by the user.
ANTI-LEGIONELLAFUNCTIONTo guarantee maximum safety and hygiene, NUOS heatpump water heaters feature the anti-legionella function.
This function regularly heats the contents of the tank to65°C in order to pasteurise the stored water.
GREENIf GREEN mode is selected, onlythe heat pump works, ensuringthe most efficient operation.
AUTOIn Auto mode only the heat pumpworks. However, should the settemperature be higher than 55°C or the ambient temperature is low(0°C), the heating element isactivated, in order to achieve max energy saving and the max quantityof hot water.
BOOSTIf BOOST mode is activated, the heatpump and heating element work at thesame time. This mode has to bemanually selected by the end userevery time hot water is required in asshort a time as possible.
700
100
200
300
400
500
600
0
NAT
GAS
OIL
LPG
ELE
CTRICITY
NU
OS
200
£’s/year
£227
£635
£254
£339
£212
Cost to heat 200l water/day/year
NUOS, a philosophy of energy efficiencyand total peace of mind
LEGEND
1. Compressor
2. Fan
3. Evaporator
4. Hot Water Outlet
5. Cold Water Inlet
6. Electric Element (1kW +1.5kW)
7. Condenser
8. User Interface
9. Expansion Valve
1 2
3
4
5
9
7
6
8
4
5
Shaftesbury, Dorset - 3 Bedroom, Terraced houseAn Ariston NUOS 250i heat pump water heaterhas been installed as part of a refurbishmentproject at the three-bedroom terraced house ofa Shaftesbury resident in North Dorset.
The property is located in the picturesque areaof Gold Hill, which is renowned as the locationof the Hovis bread commercials.
The installation, which was completed inFebruary 2013, was managed by Dorset EnergySolutions. The original hot water cylinder wasreplaced by the NUOS heat pump water heaterfor use alongside a solar PV system, whichwould provide the electricity to power theAriston product.
Martin Perrin, Technical Director at DorsetEnergy Solutions, said: “We already knew what
the NUOS was capable of, as we have oneinstalled at our showroom. We recommendedthe product for this particular project because itwas more than capable of meeting theproperty’s hot water needs while running inconjunction with the existing PV system – whichcould actually power the heat pump waterheater.
The installation itself was extremelystraightforward, especially as there was alreadyadequate ducting in place on an external wall,allowing the exhaust air to be sent directlyoutside the premises. We definitely recommendthe NUOS as a renewable energy product ofchoice.”
With a CoP of 2.8 (tested in accordance with EN16147), the NUOS is capable of raising the watertemperature to 55°C with just the heat pump (aback-up immersion is present to bring thetemperature to 65°C) making it an ideal solutionfor off gas properties or as a replacement forexisting electric only cylinders. It also featuresan intelligent control system which allows theend-user to program two separate times for hotwater to be available. The heat pump waterheater was also recognised for its efficiency inthe 2012 edition of Construction ProductsInnovation and Achievement (CPIA).
Furthermore, to guarantee safety and hygiene,the NUOS includes an anti-legionella function,which regularly heats the contents of thecylinder to 65°C in order to sterilise the storedwater. The cylinder also has a five yearguarantee and the electrical components areguaranteed for two years.
“We definitely recommend the NUOS asa renewable energy product of choice”
Martin Perrin, Dorset Energy Solutions
6
Dumbarton -The Glencairn, Public HouseAn Ariston NUOS FS 200 heatpump water heater has beeninstalled to cater for the hotwater demands of TheGlencairn pub and restaurantin Dumbarton, Scotland,following a consultationbetween its owners and localplumbing and heatingcompany Alternagas Ltd.
“These savings, inaddition to solving thewater delivery issues andlegionella compliance, have made theNUOS a first class answer to the waterheating problem.”
John Lavery, Alternagas Limited
The decision to fit the NUOS arose afterAlternagas Ltd’s Director, John Lavery, set upan energy monitor on the venue’s old immersionheater in November 2012, following concernsfrom the pub’s owners about water heatingcosts. He was dismayed to discover that, onaverage, 38kWh per day was being consumed toheat the hot water. This, coupled with waterdelivery problems from low temperatures andhigh usage, resulted in Ariston’s NUOS heatpump water heater being installed in January2013.
John then fitted the energy monitor to theNUOS and was very impressed with the results,as he explained: “The average reading is nowdown to 13kWh a day on the AUTO setting, sothere are even better savings to be made whenthe air temperature goes up and the GREENmode is activated. These savings, in addition tosolving the water delivery issues and legionellacompliance, have made the NUOS a first classanswer to the water heating problem.”Plus, as the NUOS is installed in the cellar area,
the pub’s owners have also reported coolerbeers and the need for less refrigeration, as theexhaust air from the product is helping to keepthe room temperature at the level required.
As a result, both John and the owners of TheGlencairn pub and restaurant have reported thatthey are very impressed with the heat pumpwater heater.With a CoP of 3.7 @ 20ºC (EN 255-3), the NUOSis capable of raising the water temperature to55°C with just the heat pump (a back-upimmersion is present to bring the temperatureto 65°C) making it an ideal solution for off gasproperties or as a replacement for existingelectric only cylinders.
NUOS also features an intelligent controlsystem which allows the end-user to programtwo separate times for hot water to be available.The heat pump water heater was alsorecognised for its efficiency in the 2012 editionof Construction Products Innovation andAchievement (CPIA).Furthermore, to guarantee safety and hygiene,the NUOS includes an anti-legionella function,which regularly heats the contents of thecylinder to 65°C in order to sterilise the storedwater. The cylinder also has a five yearguarantee and the electrical components areguaranteed for two years.
7
Aldershot -12 newly built, apartments12 newly built, one-bedroom apartments inAldershot have each been fitted with an AristonNUOS FS250i floor-standing air source heatpump water heater.
The products have been installed to ensurecarbon emissions are reduced by a minimum of10% through the provision of onsite renewableenergy, in accordance with Level 3 of the Codefor Sustainable Homes.
Commenting on the specification of the NUOSunits, Phil Davey, Director of DaveyDevelopments, said: “We needed to ensure thatthe new properties would benefit from getting10% of their energy from a renewable source.”
“After finding out about the NUOS range, I wasinvited by Ariston to look around their factory tofamiliarise myself with the product. Once itsrenewable credentials had been explained tome, it became apparent that the NUOS wouldenable the apartments to meet the necessarylevels of sustainability.”
The installation was conducted by Kevin Marlow,Director of K Marlow Plumbing & Heating, whoadded: “The NUOS is a good looking product
that’s very easy to fit. We put the first of theunits in during the summer and, after just threehours, there was a full 250-litre cylinder of hotwater available for use.”
With a CoP of 3.7, the NUOS is capable ofraising the water temperature to 55°C with justthe heat pump (a back-up immersion is presentto bring the temperature to 65°C) making it anideal solution for off gas properties or as areplacement for existing electric only cylinders.It also features an intelligent control systemwhich allows the end-user to program twoseparate times for hot water to be available.
Furthermore, to guarantee safety and hygiene,the NUOS includes an anti-legionella function,which regularly heats the contents of thecylinder to 65°C in order to sterilise the storedwater. The cylinder also has a five yearguarantee and the electrical components areguaranteed for two years.
“We needed to ensure that the newproperties would benefit from getting10% of their energy from a renewablesource.”
Phil Davey, Davey Developments
“The NUOS is a good looking productthat’s easy to fit.”
Kevin Marlow, K Marlow Plumbing & Heating
Glasgow -Waterside Playing FieldsFour Ariston NUOS 250 heat pump waterheaters have been installed inside the newly-built modular sports changing rooms atWaterside Playing Fields in Glasgow.
The floor-standing units were selected to enablethe premises in meeting the Simplified BuildingEnergy Model (SBEM) calculations, inaccordance with Part L2 of the BuildingRegulations.
The installation, which was completed inOctober 2012, was undertaken by Bridlington-based heating engineers Tony HowarthPlumbing & Heating, which also built and co-designed the sports changing rooms with IdealBuilding Systems of Bridlington. Tony Howarth, Partner at Tony HowarthPlumbing & Heating, explained: “The newchanging facilities required an energy efficientheating system in order to comply with theBuilding Regulations. It was great to discoverthat the NUOS from Ariston was capable ofmeeting the new venue’s hot waterrequirements. Once we had fitted the unitsinside a cupboard large enough to allowadequate air circulation, everything was in placein time for the new football season.”
“It was great to discover that the NUOSfrom Ariston was capable of meeting thenew venue’s hot water requirements.”
Tony Howarth, Tony Howarth Plg & Htg
With a CoP of 3.7 @ 20ºC (EN 255-3), the NUOSis capable of raising the water temperature to55°C with just the heat pump (a back-upimmersion is present to bring the temperatureto 65°C) making it an ideal solution for off gasproperties or as a replacement for existingelectric only cylinders. It also features anintelligent control system which allows the end-user to program two separate times for hotwater to be available. The heat pump waterheater was also recognised for its efficiency inthe 2012 edition of Construction ProductsInnovation and Achievement (CPIA).
Furthermore, to guarantee safety and hygiene,the NUOS includes an anti-legionella function,which regularly heats the contents of thecylinder to 65°C in order to sterilise the storedwater. The cylinder also has a five yearguarantee and the electrical components areguaranteed for two years.
8
Barnsley -Just Renewables LimitedBarnsley-based renewables installer JustRenewables Ltd is practising what it preaches,having recently installed a fully operationalAriston NUOS floor standing unvented cylinderwith integrated air source heat pump waterheater at its Wakefield Road showroom. TheNUOS has been fitted to the heating systemalong with two Ariston solar thermal panels,while a monitoring device simultaneouslyrecords how much energy is being saved. Thefully functional display is available for heatinginstallers to study and interact with, enablingthem to learn more about the technologyinvolved.
The installation was the result of a meetingbetween Glyn Burns,Managing Director of JustRenewables Ltd, and Ariston at the Ecobuild2012 exhibition. Having been impressed by therenewable technologies available, Glyn opted tohave an Ariston system installed at hiscompany’s trade showroom in South Yorkshire,as well as offer the products to his customers.
“We’d consulted other manufacturersbut the Ariston unit was the best all-round product available on the market. ”
Glyn Burns, Just Renewables Limited
Glyn explains further: “We were looking for asmall, compact product that was easy to fitindoors as part of a fully operational renewableheating system. However, there are not manyunits available that combine tanks and heatpumps together, so we were pleased to learnabout the NUOS from Ariston. We’d consultedother manufacturers but the Ariston unit wasthe best all-round product available on themarket. We certainly didn’t hesitate in adding“the system to the renewable technologies weoffer our installers.”
The whole system was installed inside two days,and Glyn was so impressed he decided he wouldhave a NUOS installed at his home as well. Thiswas not a difficult decision to make, as heenthuses: “The NUOS offers massive costsavings in comparison to electric immersionheaters or traditional gas boiler systems, aswell as much higher levels of energy efficiency.Indeed, the statistics from the energymonitoring unit on the system in the showroomhave been so impressive they’ve convinced meto get a NUOS installed in my house as well.”
“Statistics from the energy monitoringunit on the system in the showroomhave been so impressive they’veconvinced me to get a NUOS installed inmy house as well.”
Glyn Burns, Just Renewables Limited
9
FLOOR STANDING DIRECT AIR SOURCE HEAT PUMP WATER HEATER
NUOS
� COP 3.7 @ 20ºC (EN 255-3)� COP 3.1 (@ 7ºC (EN 255-3)� COP 2.6 (EN 16147)� ALL PLUMBING AND ELECTRICAL
CONNECTIONS WITHIN A 45° ANGLE� ENVIRONMENTALLY SOUND AND
HIGHLY EFFICIENT THERMALINSULATION
� 3 MAGNESIUM ANODES TO PROTECTAGAINST CORROSION
� FACTORY FITTED 1/2” T&P RELIEF VALVE� BACK-UP HEATING ELEMENT (1 +
1.5kW)� 750W COMPRESSOR (HEAT PUMP)� ‘PLUG AND PLAY’ - NO F-GAS
QUALIFICATIONS NEEDED TO INSTALL� 5 YEAR TANK GUARANTEE (2 YEAR
GUARANTEE ON ELECTRICALCOMPONENTS)
200d
Dimensions
ENVIRONMENTALLYFRIENDLYINSULATION
ENERGYSAVING
ENAMELLEDSTEEL TANK
HIGHHIGHEFFICIENCYEFFICIENCYHIGH
EFFICIENCY
10
Technical DataNUOS 200d
DESCRIPTIONTank Rated Capacity litres 200Footprint (minimum) mm 600 x 600Weight Empty kg 90Weight Full kg 290Minimum Ceiling Height metres 1.75
CYLINDERNormal Operating Pressure bar 3.5Maximum Water Supply Pressure bar 12Hot/Cold Water Connection 3/4” BSP - 22mmHeat Loss (@ 65ºC ) kW/h in 24hr 2.06Global Warming Potential (GWP) <5Ozone Depletion Potential (ODP) 0
HEAT PUMPHeat Rating* kW 2.775Power Consumption* kW 0.75CoP in accordance with EN 255-3 (air temp. 20ºC) 3.7CoP in accordance with EN 16147 2.6Heating Time (∆T 45ºC)* mins 236Heating Energy Consumed* kW/h 2.2Maximum Water Temp (Heat Pump Only) ºC 55
REFRIGERANT FLUIDType of Fluid R134aQuantity kg 1.28Practical Limit for Room Volume** m3 5.12
ELECTRICAL DATAElectrical supply V/Hz 220-240/50Element Rating kW 1.5 + 1Protection grade of electrical system IP X4
AIRAir Flow Rate m3/h 300 - 500Available Static Pressure Loss Pa 70Sound Pressure Level @ 2m dB(A) 39Min. Temp of Room of Installation ºC 1Max. Temp of Room of Installation ºC 35Min. Volume of Room (non-ducted) m3 20Min. Air Temp Required (w.b.) @ 90% r.h. ºC -5Max. Air Temp Required (w.b.) @ 90% r.h. ºC 35
REHEAT TIME100% Capacity (Heat Pump Only) mins 23670% Capacity (Heat Pump Only) mins 181100% Capacity (Heat Pump & Element) mins 14070% Capacity (Heat Pump & Element) mins 114
Model CodeNUOS FS 200 3210041Unvented Kit 3069418Duct Kit (Inlet/Outlet) - Ø150mm / Ø200mm 3208061 / 320807190º Elbow - Ø150mm / Ø200mm 3208067 /3208075 Wall Fixing brackets (2) - Ø150mm / Ø200mm 3208068 / 3208077
AccessoriesCode Code
AIR DUCT (Ø150mm) (Ø200mm)1m Tube 3208063 32080721.5m Tube 3208064 --------2m Tube -------- 3208073Joint 3208066 320807445º Elbow 3208067 32080761m Flexible Tube 3208069 --------
* Tested in accordance with EN 16147** The practical imit is the minimum room volume the appliance should be installed in, the volume is based on quantity of refrigerant in the system. In the event of a sudden release of refrigerant then the min. room volume will make it safer for the engineer.
11
FLOOR STANDING INDIRECT AIR SOURCE HEAT PUMP WATER HEATER
NUOS
� COP 3.7 @ 20ºC (EN 255-3)� COP 3.1 (@ 7ºC (EN 255-3)� COP 2.8 (EN 16147)� ALL PLUMBING AND ELECTRICAL
CONNECTIONS WITHIN A 45° ANGLE� ENVIRONMENTALLY SOUND AND
HIGHLY EFFICIENT THERMALINSULATION
� 3 MAGNESIUM ANODES TO PROTECTAGAINST CORROSION
� FACTORY FITTED 1/2” T&P RELIEF VALVE� BACK-UP HEATING ELEMENT (1 +
1.5kW)� 750W COMPRESSOR (HEAT PUMP)� INDIRECT COIL FOR USE WITH SOLAR
SYSTEMS OR GAS/OIL BOILER� ‘PLUG AND PLAY’ - NO F-GAS
QUALIFICATIONS NEEDED TO INSTALL� 5 YEAR TANK GUARANTEE (2 YEAR
GUARANTEE ON ELECTRICALCOMPONENTS)
250i
Dimensions
5 5 yearguarantee
2 2 yearguarantee
25 25 yearguarantee
10 10 yearguarantee
ENVIRONMENTALLYFRIENDLYINSULATION
ENERGY SAVING
ENAMELLEDSTEEL TANK
HIGHHIGHEFFICIENCYEFFICIENCYHIGH
EFFICIENCY
12
* Tested in accordance with EN 16147** The practical imit is the minimum room volume the appliance should be installed in, the volume is based on quantity of refrigerant in the system. In the event of a sudden release of refrigerant then the min. room volume will make it safer for the engineer.
AccessoriesCode Code
AIR DUCT (Ø150mm) (Ø200mm)1m Tube 3208063 32080721.5m Tube 3208064 --------2m Tube -------- 3208073Joint 3208066 320807445º Elbow 3208067 32080761m Flexible Tube 3208069 --------
Technical DataNUOS 250i
DESCRIPTIONTank Rated Capacity litres 250Footprint (minimum) mm 600 x 600Weight Empty kg 110Weight Full kg 360Minimum Ceiling Height metres 2
CYLINDERNormal Operating Pressure bar 3.5Maximum Water Supply Pressure bar 12Hot/Cold Water Connection 3/4” BSP - 22mmHeat Loss (@ 65ºC ) kW/h in 24hr 2.05Global Warming Potential (GWP) <5Ozone Depletion Potential (ODP) 0
HEAT PUMPHeat Rating* kW 2.775Power Consumption* kW 0.75CoP in accordance with EN 255-3 (air temp. 20ºC) 3.7CoP in accordance with EN 16147 2.8 Heating Time (∆T 45ºC)* mins 302Heating Energy Consumed* kW/h 2.7Maximum Water Temp (Heat Pump Only) ºC 55
REFRIGERANT FLUIDType of Fluid R134aQuantity kg 1.28Practical Limit for Room Volume** m3 5.12
ELECTRICAL DATAElectrical supply V/Hz 220-240/50Element Rating kW 1.5 + 1Protection grade of electrical system IP X4
AIRAir Flow Rate m3/h 300 - 500Available Static Pressure Loss Pa 70Sound Pressure Level @ 2m dB(A) 39Min. Temp of Room of Installation ºC 1Max. Temp of Room of Installation ºC 35Min. Volume of Room (non-ducted) m3 20Min. Air Temp Required (w.b.) @ 90% r.h. ºC -5Max. Air Temp Required (w.b.) @ 90% r.h. ºC 35
REHEAT TIME100% Capacity (Heat Pump Only - ∆T 45ºC) mins 30270% Capacity (Heat Pump Only - ∆T 45ºC) mins 231100% Capacity ((Heat Pump & Element - ∆T 45ºC) mins 19470% Capacity (Heat Pump & Element - ∆T 45ºC) mins 137
Model CODENUOS FS 250i 3210042Unvented Kit 3069419Duct Kit (Inlet/Outlet) - Ø150mm / Ø200mm 3208061 / 320807190º Elbow - Ø150mm / Ø200mm 3208067 /3208075 Wall Fixing brackets (2) - Ø150mm / Ø200mm 3208068 / 3208077
13
In th
e interests of our customers, Ariston Thermo UK Limited is continually developing these products to im
prove both perform
ance and design. We therefore
reserve the rig
ht to change specification without p
rior notice. This brochure is accurate at th
e date of prin
ting. Consumer statutory rights are not affected.
-MAR ‘13
Ariston Thermo UK Ltd
Technical Advice & Customer ServiceTel +44 (0) 1494 755600Fax +44 (0) 1494 [email protected]@[email protected]
Follow us on Facebook & Twitter
