Low Temperature Hot Water Heating in Building Services Engineering

01-©PasnEuain(dxe)Lmtd21 1 1 2011 -©Pearson Education(Edexcel)Limited 2011 Unit 67:Low Temperature Hot WaterHeatingin Buil plant hotwater heating equipmentand Understand the operational characteristicsoflowtemperature 2 heating establish Beableto requirementsfor buildings 1 Learning outcomes thestan assessment criteriadetermine to demonstratethattheycanmeet all In orderto pass this unit, theevidence that the learner presents for assessment needs Learning outcomes andassessment criteria buildings. for installations efficient specifying and designing for required heating (LTHW) water hot low temperature of understanding and skills is learners to give unit this aimof The Unit aim 10 3 M/600/0380 Guided learninghours: 60 Credit value: QCF Level: Unit code: LowTemperatureHotWater Unit 67: Engineering Services Building in WaterHeating Hot Temperature 67: Low Unit

Engineering Heating inBuildingServices

the learning outcomes dard required toachieve the unit. . Describetheoperational 2.1 thethermalperformance Establish 1.3 Establishheating system design 1.2 Producepre-design appraisals of 1.1 Assessment criteria . Explain how theoperational 2.2 to determine calculations Perform 1.4

ding Services Engineering -Issue1November heating systems equipment associated withLTHW characteristics ofplant and rates infiltration fabricproperties ofbuilding and data and parameters forbuildings buildings of the heatingrequirements characteristics of loss heat total building

fortheunit.The

LTHWplantand

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01-©PasnEuain(dxe)Lmtd21 2 2 2011 -©Pearson Education(Edexcel)Limited 2011 Unit 67:Low Temperature Hot WaterHeatingin Buil andequipment pipework,plant heatinginstallation 4 Beabletosize,selectand specify installations heating water hot 3 Beabletodesignlow temperature Engineering Services Building in WaterHeating Hot Temperature 67: Low Unit

4.2 Perform the calculations required required calculations the Perform 4.2 parametersand Selectdesign 4.1 Plansimpleboil 3.2 pipework installation heating Plan 3.1 Specifyboilersandotherheat- 4.3 Produceappropriate design 3.3

ding Services Engineering -Issue1November LTHW heating circuits to selectcirculationpumpsfor networks resistances forLT rates, pipe sizes andcircuit calculate consequentmass flow configurations plant arrangementsand configuration and design layouts efficiency and generation plant in terms of installations drawings ofproposedLTHW application equipment influence their

sustainability er/heat generation HW distribution

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Heating pumps benefits versus costs application, egproperties, materials selecting for criteria installation; Pipework andjointingsystems criteria selection output; of control emissions; heat heat emitters; of application and installation heaters, radiant panels, underfloor heating; Heat emitters components Boiler plant and heat generatorsplant andheat Boiler seals; connectionto 01-©PasnEuain(dxe)Lmtd21 3 3 2011 -©Pearson Education(Edexcel)Limited 2011 Unit 67:Low Temperature Hot WaterHeatingin Buil c applications; public-sector and industrial Heating requirements 1 Be able to establish heating requirements forbuildings Unit content Engineering Services Building in WaterHeating Hot Temperature 67: Low Unit requirements; regulations; requirements; storage fuel arrangements; flue firing; installation; boilermountings; applications; standards; environmental implications of implications environmental standards; simple heatlosses;use of and ‘rules validity Heat losses winter heating applications an thermalresponse location, of geographical design decisions;select of implications environmental locations; non-standard for temperatures pumps; boilerplantand heatgenerators; LTHW plant andequipment heating equipment and plant Understand2 theoperationalcharacte reducing energyrequirement design conditions forwinter heating; ex use ofregulations,codes ofpractice, st Design conditions requirements specialheating with locations restrictions; planning the installation; of expectancy quality/life changes; future of likelihood oc building of effect considerations; and co flexible joints; sliding bellows; Expansion accommodation devices efficiency

of calculation fabric; building for Uvalues of selection and identification : : egpanel, sectional, low temperature, natural andfan convectors, unit : single and twin head pumps; dire headpumps; and twin : single : factors used to select internal de internal used toselect : factors

pipelines; methods to alter rotation speed;effect on pump duty : reasons for heating buildings or zones for domestic, commercial, commercial, for orzones domestic, buildings : for heating reasons

ion ofexternal design temperaturesforwinter heating; inclusion : heat emitters; pipework an pipework : heatemitters; standards; environmentali : pipework sizes; : pipework : types;characteristics;

nnections; anchors; guides; supports : characteristics; natural : characteristics; andards and guidance notes when selecting ercising judgementwh cupation times and patterns; identifying

heating energyrequir expansion accommodation lient, userand enviro ristics oflow temperature hot water characteristics, appearance,operation, characteristics,

-of-thumb’; legislative constraints; energy d risk ofexceedance: infiltrationratesfor ding Services Engineering -Issue1November

jointing characteristics; assembly; assembly; characteristics; jointing ct andindirect drives;glands and

sign temperatures;thermalindices; ssues; maximising energy ssues; maximising d jointingsystems;heating operational features; features; operational

pipe flexibility; loops; en selectingdesign ements; methods of nmental requirements

devices;ancillary

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Drawings installations prevention of corrosion;methodsand equi devices; and dirt-removal offilters location draining; and removal air isolation, types and locationofflow regulationand Commissioning and maintenance primary circuits generation plant; connection ofcircuits to heat- to accommodate requirements work andbuilding structural configurations; boiler Design of boilers and heat-generation plant expansion water; location of accommodation androuting; arrangementsfor temperature circuits;relationship ofcold methods for zoning installations;use an two-pipe andreverse-return systems; good components of Arrangement heat-generation plant;commission Design ofLTHW heatinginstallations 3 Be able to designlow temperat valves; flow-measurement regulating vessels; expansion flexible diaphragm operated); float drain, (isolation, 01-©PasnEuain(dxe)Lmtd21 4 4 2011 -©Pearson Education(Edexcel)Limited 2011 Unit 67:Low Temperature Hot WaterHeatingin Buil data; production ofspecifications andschedules Expansion devices and other components Ancillary components Engineering Services Building in WaterHeating Hot Temperature 67: Low Unit and computer software for calculationofma Pipework circuits equipment 4 Be able to size,select and specify appropriat production of calculation of pipework emi pipework of calculation Plant andequipment distribution networks absorbing excesspressure atbranches; esta circuits; totalresistanceof schedules rates; combustion, ventilation, fuel/energy requirements; boiler specifications and Boilers and heat generators hydraulic resistance;production of heat Heat emitters data commissioning features; cause, effect and prevention of manufacturers’ data; pump andsystemchar Pumps devices and othercomponents

: application of pump margins; determining pump duty; selection of pumps ofpumps from selection duty; pump determining margins; pump of application : : communicationof detailed

: selection; variation of emitter ou emitter of variation selection; :

: selection ofpipework design parameters; use ofmanual calculations

: pumps; heat emitters; boilers : characteristics andfeaturesof

e drawings and sketches ssion andtemperature distribu index circuits; methodsofproducing balancedsystems and devices; testpoints : selection; hydraulic resistance; maintaining minimum flow flow minimum maintaining resistance; hydraulic selection; : : locationofheat emitters an

pipework expansion devices; pr

: reasons for commissioning heating pipe networks; ing andmaintenance; drawings : arrangementofcomponents ure hot waterheatinginstallationsure designs;useof drawin emitter specifications and schedules andschedules specifications emitter d arrangementfor constant and variable heating installation pipework, plant and feed, ventpipe and pumps; pipework : selection of components from manufacturers’ from manufacturers’ components of : selection metering devices;provisionofmeans of cavitation; production heat-generation plantegpipeworkheaders, pment used for chemical treatment of treatment pment usedforchemical : space requirements for single and multiple and multiple for single spacerequirements : pipework circuitde

ss flow rates; select ss flow blishing commissioning data forpipeworkblishing commissioning acteristics; efficiencyand operational ding Services Engineering -Issue1November initial fill, top-up and accommodation of of accommodation and top-up fill, initial tputwater withtemperature; mean

and heat generators; expansion eg air-removal devices; valves

d pipework systems; one-pipe, tion inone- andtwo-pipe g symbols andannotation; evention of noiseproblems sign; criteria and sign; criteria ofpumpschedules; ion of pipe sizes; ; design ofboilers and

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