Heat Interface Units

COMMUNAL HEATING SCHEMESSolutions for

with

inside

• OneHIUfitsall(5-70kW)–usingspecializedcontrolvalves• Upgradefacilitieswithsimpleinterchangeableunits• Intelligentcontrollersgiveefficientprimarycontrolandplatepre-heatforfasterresponse.• EsbeTMVforenhancedDHWusercomfort• Qualitybrands–Grundfos,ESBE,SWEP• Designedforeasymaintenance• Fullyinsulated• Nogassupplyrequiredtoindividualapartments• Reducedinstallationandlifecyclecosts• Lowermaintenance• Greaterenergyefficiency

A primary consideration in modern construction is increased energy efficiency, user comfort and energy billing – particularly in multi-dwelling buildings.

As a result Centralised District Heating schemes, supplied by a combination of traditional and renewable energy sources, are becoming widely accepted as the industry norm for new build developments.

ESBE Controlled Heat Interface Units give Consultants and Engineers a reliable solution which provide eco-friendly, efficient temperature control whilst achieving high energy efficiency and user comfort.

Essco Controls offer Heat Interface Units (HIUs) for a variety of applications – whether for single or multi-dwelling houses, apartments, industrial, commercial or within district heating systems.

The HIU unit provides a single point of control which delivers improved efficiency and reduced effective running costs. These compact units are designed to fit in very small spaces, with minimal installation and running costs. Systems can be fitted with wireless control and weather compensating modulation providing additional control.

What is a Heat Interface Unit?

Leisure

Commercial

Domestic

Industrial

Benefits of ESBE Controlled HIUs include:

D O M E S T I C C O M M E R C I A L L E I S U R E I N D U S T R I A L

with

inside

Heat Interface Units (HIUs) provide the complete solution for your heating and hot water on a heat network.

Cost efficient solutions for multi-dwelling developments

HIU

HIU

HIU

HIU

THE ENERGY CENTRE

HIU HIU

Typical multi-dwelling development

Leisure

Commercial

Domestic

Industrial

The energy centre provides one heat source for all individual apartments and flats which reduces energy costs and the carbon footprint.

• Accurateconsumptionandrunningcostsareprovided

•Annualservicingcostsreducedsignificantly

•Reducedgasconsumption

•InstantaneousDHWisachievedusing temperatureregulation

•Additionalwirelesscontrol optionsavailable

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inside

I N D I R E C T T W I N H I UESS-TWIN

Options

HydronicseparationbetweenprimaryandsecondarysystemInstantaneousHeatingandDHWfromplateheatexchangers12lexpansionvesselElectronicandthermostaticcontrolofDHW–HighFlowratesDifferentialpressurecontrolasstandardCopperbrazedAISI316stainlesssteelplateheatexchanger doesnotrequiremaintenance.AISI316stainlesssteelpipingpreventsanycorrosion.Easytoinstallandoperate.Uniquecombinationoffastactinghighflowelectroniccontrol ofDHWwithsecondaryTMVtogivestabletemperatureoutput

FirstFixRailcompletewithBypassMBUSHeatMeterMBUSWaterMeterRangeofHeatingcontrollersallowingWeather Compensation,WirelessRoomstatandIndoorsensors.

SpecificationHeat transfer capacityMax working pressure primaryMax working pressure secondary(heating)Min working pressure DHWMax working temperatureConnections

5-70kW10 Bar3 Bar2 Bar95°C¾” BSP Insulated Pipe

Indirect Twin HIU

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A Central Heating SupplyB Central Heating ReturnC Domestic Cold Water InletD Domestic Cold Water OutletE Domestic Hot WaterF Space Heating SupplyG Space Heating Return

Hydronic Scheme

C O N T R O L S

ESSCOESSCO

No Components1A Heat Exhanger (DHW)1B Heat Exchanger (Heating)5 Differential Pressure Controller7 5 Way Distributor + Strainer8 Water Meter9 Heat Meter20 Heating Circulation Pump21 Check Valve23 Safety Valve24 Strainer25 Expansion Tank34A CRS Controller34B CRA ControllerPG Pressure GaugePS Pressure Switch10 Mixing Valve

I N D I R E C T S I N G L E H I UESS-SINGLE

Indirect Single HIU

34B

9

25

24

23

5PS

20

1B

21

PG

NO Components1B Heat Exhanger(Heating)5 Differential Pressure Control Valve9 Heat Meter 20 Heating Circulation Pump21 Check Valve23 Safety Valve24 Strainer25 Expansion Tank34B CRA Controller PG Pressure GaugePS Pressure Switch

D

E

F

C

1 2 3 4

B

A

321 5

C

D

4 6 7 8

A

B

SHEET 2 OF 4SCALE:1:10

Project NameF.BERK

DateNameM.AKSU

Appv'd

Sgn

ABFG

Chk'd M.AKSU15.07.2016

Central Heating SupplyCentral Heating ReturnSpace Heating SupplySpace Heating Return

REV No:

Proje No.Cap.

Drawn

150701-02 150701-02

Rev:015.07.201615.07.2016

150701-02

Options

HydronicseparationbetweenprimaryandsecondarysystemInstantaneousHeatingfromplateheatexchangers12lexpansionvesselElectroniccontrol–HighFlowratesDifferentialpressurecontrolasstandardCopperbrazedAISI316stainlesssteelheatexchanger doesnotrequiremaintenance.AISI316stainlesssteelpipingpreventsanycorrosion.Easytoinstallandoperate.

FirstFixRailcompletewithBypassMBUSHeatMeterMBUSWaterMeterRangeofHeatingcontrollersallowingWeather Compensation,WirelessRoomstatandIndoorsensors.

SpecificationHeat transfer capacityMax working pressure primaryMax working pressure secondary(heating)Max working temperatureConnections

60kW10 Bar3 Bar95°C¾” BSP Insulated Pipe

D O M E S T I C C O M M E R C I A L L E I S U R E I N D U S T R I A L

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İ İ İ

ı İ

5

ExpansionTank

FG

23

20

1B25

AB

1B.Heat Exchanger(Heating)5.Differential Pressure Controller

12.Thermal Actuator

23.Safety Valve

20.Heating Circulation Pump

25.Expansion

OEM2

9

9.Heat Meter

T

21.Check Valve

24

24.Strainer

M

34B

PS

24

34B.CRA ControllerPG.Pressure GaugePS.Pressure Sensor

20150701-02

C O N T R O L S

ESSCOESSCO

Hydronic Scheme

A Central Heating SupplyB Central Heating ReturnF Space Heating SupplyG Space Heating Return

No Components1B Heat Exhanger (Heating)5 Differential Pressure Control Valve9 Heat Meter20 Heating Circulation Pump21 Check Valve23 Safety Valve24 Strainer25 Expansion Tank34B CRA ControllerPG Pressure GaugePS Pressure Switch

I N D I R E C T H E A T I N G W I T H D H W C Y L I N D E RESS-CYLINDER

Indirect Heating - Direct DHW to Cylinder

Options

HydronicseparationbetweenprimaryandsecondarysystemInstantaneousHeatingCylinderteeoffafterheatmeterallowingaccuratebillingof DHWinretrofitapplicationsorwhenbuffertanksareinstalled12lexpansionvesselRangeofinterchangeableControllersforHeatingDifferentialpressurecontrolasstandardCopperbrazedAISI316stainlesssteelplateheatexchanger doesnotrequiremaintenance.AISI316stainlesssteelpipingpreventsanycorrosion.Easytoinstallandoperate

FirstFixRailcompletewithBypassMBUSHeatMeterMBUSWaterMeterRangeofHeatingcontrollersallowingWeather Compensation,WirelessRoomstatandIndoorsensors.

SpecificationHeat transfer capacityMax working pressure primaryMax working pressure secondary(heating)Min working pressure DHWMax working temperatureConnections

60kW10 Bar3 Bar2 Bar95°C¾” BSP Insulated Pipe

D O M E S T I C C O M M E R C I A L L E I S U R E I N D U S T R I A L

No Components1B Heat Exhanger (Heating)4 Zone Valve9 Heat Meter20 Heating Circulation Pump21 Check Valve23 Safety Valve24 Strainer25 Expansion Tank34B CRA ControllerPG Pressure GaugePS Pressure Sensor

C O N T R O L S

ESSCOESSCO

Hydronic Scheme

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A Central Heating SupplyB Central Heating ReturnC DHW Cylinder SupplyD DHW Cylinder ReturnF Space Heating SupplyG Space Heating Return

I N D I R E C T D H W W I T H D I R E C T H E A T I N GESS-DIRECT

Indirect DHW - Direct Heating

Options

HydronicseparationbetweenprimaryandsecondarysystemInstantaneousHeatingdirectlyfromtheprimarysupply allowinggreaterenergysavingsandefficiencyIdealfornewbuildapplicationsRangeofinterchangeableControllersforHeatingDifferentialpressurecontrolasstandardCopperbrazedISI316stainlesssteelplateheat exchangerdoesnotrequiremaintenance.AISI316stainlesssteelpipingpreventsanycorrosion.Easytoinstallandoperate

FirstFixRailcompletewithBypassMBUSHeatMeterMBUSWaterMeterRangeofHeatingcontrollersallowingWeather Compensation,WirelessRoomstatandIndoorsensors.

SpecificationHeat transfer capacityMax working pressure primaryMax working pressure secondary(heating)Min working pressure DHWMax working temperatureConnections

5-70kW10 Bar3 Bar2 Bar95°C¾” BSP Insulated Pipe

D O M E S T I C C O M M E R C I A L L E I S U R E I N D U S T R I A L

No Components1A Heat Exchanger (DHW)8 Water Meter-Optıonal9 Heat Meter5 Differential Pressure24 Strainer34A CRS Controller34B CRA ControllerAV Air Vent10 Mixing Valve

C O N T R O L S

ESSCOESSCO

Hydronic Scheme

A Central Heating SupplyB Central Heating ReturnC Domestic Cold Water InletD Domestic Cold Water OutletE Domestic Hot WaterF Space Heating SupplyG Space Heating Return

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C O M P O N E N T SSmart Systems

D O M E S T I C C O M M E R C I A L L E I S U R E I N D U S T R I A L

VRG122 2 way Rotary shoe valve

CRS115 – Temperature Controller with pocket sensor

CRA115 – Temperature Controller

Grundfos UPM 3 Pump

CRC115 – Temperature Controller with Weather compensation

ManufacturedfromDZRBrassforlonglastingandhighdurability.Lowestinternalleakagerateonthemarket(<0.05%).Progressiveregulatingcharacteristictogivefullcontrolthroughoutopeningstroke.Customizedcoatedsleeveforhighendurance.ClosecouplingwithEsbeactuatorforaccurateproportionalcontrol

SeriesCRS110isaconstantflowtemperaturecontrollerforapplicationswhereaconstantwatertemperatureisrequired.Temperaturesettingisdonebyaneasy-to-usejoystickanddisplayinterface.ThecompactcontrollerisdesignedforoperatingrotaryvalvesDN15-50andhasanoperatingrangeof90°.Theseriescaneasilybemanuallyoperatedbythepull-and-turnknobonthefrontofthecover.TheCRShasapocketwithaninsertedtemperaturesensorwithaquicktemperatureresponsetosuitpotablewaterapplications.Theactuatorprogrammingcanbealteredtogivefasterresponsetimesfortemperaturevariations.

SeriesCRA110isaconstantflowtemperaturecontrollerforapplicationswhereaconstantwatertemperatureisrequired.Temperaturesettingsisdonebyaneasy-to-usejoystickanddisplayinterface.ThecompactcontrollerisdesignedforoperatingrotaryvalvesDN15-50andhasanoperatingrangeof90°.Theseriescaneasilybemanuallyoperatedbythepull-and-turnknobonthefrontofthecover. Aspeed-controlled,high-efficiencypumpwithinternalcontrolsin

constantpressure,proportionalpressureorconstantspeedmodesdefinedbythemeansofasmartuserinterface.TheUPM3AUTOisforallapplicationsinwhichaninternallycontrolledpumpisneeded.Itisdesignedtobeusedinappliancesorcabinetswithincreasedambienttemperaturesandlimitedspaceoptions;eitherinstandaloneapplicationsorinkitsystemswithoutPWMcontroller.

SeriesCRC110isanoutdoorsensorbasedcontrollerwithintegratedactuatorforuseonmixingvalveslikeVRG122andVRB140.Thecontrollerisdesignedtoprovideahighlevelofcomfortthankstothepossibilitytosetaperfectcharacteristicheatingcurveandatthesametimeprovideenergysavingsforthehouseowner.Theregulationisbasedonoutdoorsensorfeedbackandanadjustablecharacteristicheatingcurve.Anoffset/paralleladjustmentofthecharacteristicheatingcurvemaybeactivatedbyanexternalsignalforexamplenightsettings.Forapplicationswithwellinsulatedbuildingandquickheatingsystemssuchasradiatorcircuitsatemperaturefiltercanbeactivatedtodelayanoutdoortemperaturechangetoavoidanimbalancebetweenestimatedandactualheatingdemand.

HeatMetersareusedtomeasurethedistributionofheatenergyinheatingcontrolsystemsbycalculatingthevolumeandtemperaturedifferentialofcirculatedwaterandcomplywithrequirementsstipulatedinOIMLR75,MID,EN1434standards.TheHeatMeterusedinourHIUshasMBUSfeedbackallowingremoterecordingofenergyusageviaEthernetforbillingpurposes.

Heatmeter

with

inside

with

inside

with

inside

with

inside

with

inside

Instantaneous Hot Water

Heating

C A L C U L A T I O N G U I D ETechnical

C O N T R O L S

ESSCOESSCO

CRS115 – Temperature Controller with pocket sensor

Grundfos UPM 3 Pump

Heatmeter

Output Rating

Primary Delta T

Primary Pressure Drop

Primary Flow Rate

SecondaryFlow Rate

Secondary Pressure Drop

SecondaryDelta T

Kw5

1015202030304040405060

°C151520202020202030303030

°C101015152015202020303030

kPa0.4631.862.354.23.99.49.4

16.67.47.411.616.7

kPa0.5462.182.183.92.28.84.98.88.83.96.18.8

l/m4.779.53

10.7214.314.321.521.528.619.119.123.828.6

l/m7.1514.314.319.014.328.621.528.628.619.123.828.6

Output Rating

Primary Delta T

Primary Pressure Drop

Primary Flow Rate

DHW SecondaryFlow Rate

Secondary Pressure Drop

SecondaryDelta T

Kw3040506070

°C33 (55/22)38 (60/22)48 (70/22)48 (70/22)53 (75/22)

°C35 (10/45)35 (10/45)35 (10/45)35 (10/45)35 (10/45)

kPa3.85.15.07.18.0

kPa2.74.77.8

10.714.5

l/m13.015.014.917.918.9

l/m12.316.320.424.528.6

✆ +44 (0) 1489 779068✉ sales@esscocontrols.co.ukDiversity Factor

D O M E S T I C C O M M E R C I A L L E I S U R E I N D U S T R I A L

Typical Diversity Factors

Thedegreeofdiversityformultipledwellingsisexpressedasa“coincidencefactor”andisdefinedas:F = DFR / MFRWhere: F=coincidenceordiversityfactor DFR=designflowrateforhotwateroutlets(l/s) MFR=maximumpossibleflowrateforhotwateroutlets(l/s)

Number of HIUs

Number of HIUsDiversity Diversity

123456789

101112131415161718192021222324252627282930313233

343536373839404142434445464748495051525354555657585960616263646566

10.61940.47650.39880.34900.31390.28760.26700.25040.23660.22500.21510.20640.19880.19200.18600.18050.17560.17100.16700.16310.15960.15630.15330.15040.14780.14530.14290.14070.13860.13660.13470.1329

0.13120.12960.12800.12650.12510.12380.12240.12120.12000.11880.11770.11660.11560.11480.11360.11270.11180.11090.11000.10920.10840.10760.10690.10610.10540.10470.10400.10340.10270.10210.10150.10090.1003

Number of HIUs Diversity

676869707172737475767778798081828384858687888990919293949596979899

0.09980.09920.09870.09810.09760.09710.09660.09610.09560.09520.09460.09420.09390.09340.09300.09260.09220.09180.09140.09100.09070.09030.08990.08960.08920.08890.08860.08820.08790.08760.08720.08700.0867

C O N T R O L S

ESSCOESSCO

Boiler or Heat Source

HIUHIUHIU HIU HIU HIU

HIUHIUHIU HIU HIU HIU

HIUHIUHIU HIU HIU HIU

0.288 l/s 0.411 l/s 0.524 l/s

0.288 l/s 0.411 l/s 0.524 l/s

0.836 l/s

1.416 l/s

1.970 l/s

0.288 l/s 0.411 l/s 0.524 l/s

0.524 l/s 0.411 l/s 0.288 l/s

0.524 l/s 0.411 l/s 0.288 l/s

0.524 l/s 0.411 l/s 0.288 l/s

Total flow rate without diversity = 2.592 l/sTotal flow rate with diversity = 1.970 l/s

Effect of Diversity Factors

Thesimplesystembelowillustratestheeffectsfordiversity.Itassumesthateachapartmentisidenticalwiththefollowing:-

Heat load 3 kWDHW load 50 kWHeating ∆T 10 °CDHW primary ∆T 55 °C

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C O N T R O L S

ESSCOESSCO www.esscocontrols.co.uk

Heat Interface Unit

HIU Planning List

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Flow Rate Calculation Sizing the Central Boiler PlantUsingthediversityfactorfromthechart,themaximumdesignflowrateforeachsectionofheatingpipecanbedetermined.Theflowratethrougheachpipemustbecapableofdeliveringthepeakheatingdemandfortheapartmentbeingservedplusthepeaksimultaneousdiversifieddemandfordomestichotwater. Qτ=(F*QHW)+(QHTG)WhereF=coincidenceordiversityfactorQT =totaldesignflowrate-l/sQHW =waterflowratetomeetpeakdomestichotwater demand-l/sQHTG =Waterflowraterequiredtomeetpeakspace heatingdemand-l/sThequantityofhotwatertoheatthedomestichotwaterQHWcanbecalculatedfromtheequation: QDHW=PHW

4.2*∆TDH

WherePHW =energyrequiredinkWforallHIUdomestichotwater∆TDH =designtemperaturedropacrossthecentralboilerplant sideoftheheatexchangerduringhotwaterproduction -typically50°C-75°Cflow,25°Creturn.4.2 =specificheatfactor-kJ/kg°KThequantityofhotwaterforspaceheatingQHTGcanbecalculatedfromtheequation: QDHW=PHTG

4.2*∆THTG

WherePHTG =energyrequiredinkWforallapartments -typically3to10kWeach∆THTG =designtemperaturedropacrossthecentralboiler plantside-typically30°C-75°Cflow,45°Creturn.

Buffertankprovidesathermalstoretoenablethesystemtosupplyalargeamountenergyforashortperiod.Thebuffertankcoolsduringpeakdemandandreturnstothedesigntemperaturewhenthepeakdemandhaspassed.ThecentralboilerplantcanthereforebesizedtomeetthetotalheatingloadPHTGplusanadditionalallowancetore-heatthebuffertankwithinonehourPBUFFER.TheESS-Cylinderwithastoragecylinderineachapartmentactsinasimilarmannerasabuffervesselforthedomestichotwaterdealingwithpeakdemandandreheatingwithinshorttimeperiod.Abuffervesselshouldstillbeinstalledaspartofthecentralisedplanttodealwithpeakdemandforenergyaspreviouslydescribed.

EnergyRequiredtoHeatBufferVesselThequantityofhotwatertoheatthecontentsofthebuffervesselwithinonehourcanbecalculatedfromtheequation: PBUFFER=V*4.2*∆TDH

3,600WhereV =volumeofbuffervessel-litreForadurationlessthanonehoursubstitutethenumberofsecondsfor3,600.

BufferVesselSizingThebuffervesselshouldbesizedtodealwithpeakheatingandhotwaterdemandsustainedoveraperiodof10minutes=600seconds.Assumingtheboilerplantiscontrolledtomaintaintherequiredheatingflowtemperatureatapointtwothirdsofthewaydownthevesselthentherequiredenergyflowintothevesselwillbefor900seconds. V=900*F*QHW

WhereV =volumeofbuffervessel-litre

Pleasecompletethetablebelow,togetherwithanyfurtheradditionalinformation.

Domestic Hot water specificationDHW Temperature requirementsDHW flow rate requirementsCentral Heating SpecificationHeating LOAD (Kw)Heating flow design temperaturePrimary (District) specificationPRIMARY (District) Flow temperaturePRIMARY (District) Return temperaturePressure Drop across the Primary Flow and returnCold waterCold water (inlet) design temperatureCold water (inlet) design pressureAdditional Specification

Required Value submitted by the System Design House

Required Value submitted by the System Design House

Required Value submitted by the System Design House

Required Value submitted by the System Design House

Required Value submitted by the System Design House

Actual confirmed

Actual confirmed