pewo - Therm IDD - Consumer Unit Brochure

PEWO PrOduct LinEs District Heating Stations pewoCAD · Heating Circuit Manifolds pewoSplit · Modular Stations pewoV-max · House Stations pewoCompact · Consumer Units pewoTherm · Domestic Hot Water Heater pewoAqua · Supply Register pewoVario · Tanks pewoCollect · Control- and Communications Technology pewoControl · Monitoring pewoLiveHeating substations consumer unitspewoTherm house substationspewoCompactpewoV-maxfor heat distribution in heating networks and buildings2MEasuring, cOntrOLLing, rEguLating– these have been the guiding passions of Egbert Petrick, owner of the PEWo-Group for more than 30 years. Where passion goes hand-in-hand with technical expertise, then groundbreaking technologies are born. Step-by-step, PEWo has developed into a leading systems supplier of effi cient heat distribution.our company’s product portfolio encompasses the entire spectrum from local to remote heating stations, heating circuit distributors, heat extractor plants, apartment stations and hot water heaters as well as communications and control technology, visualization and monitoring. tEchnOLOgicaL advancE frOM EnginEEring hEritagE We are very conscious of one thing: He who stands still, achieves nothing. For this reason, we have continuously invested in research and development – and we will con-tinue to set defining trends in our industry. our clients and business partners will profit from this through access to the newest technologies and 30 years of experience. Manufacturing ExPErtisEWe ensure high levels of quality in our factory through prov-en and defined processes in coordination and production, modern manufacturing procedures, innovative technologies, scientific expertise and extensive in-house production resources. The result is more than 8,000 individual custom-er plants produced year on year. WE think bEyOnd thE hOrizOnPEWo is a supplier of self-contained, efficient and com-prehensive solutions. Installation and user-friendly systems are guaran teed. Proven standard applications minimize the time and energy required for planning and manufactur-ing considerably. Successful designs and solutions can be multiplied with little effort, consequently the input required for installations and on-site coordination are significantly reduced. 3Find The Right pewoThermdistrict heating transferheating circuitsdomestic hot water heatingapplication pageheatingdomestic hot water heatingpower for heating dt = 20 k number of un-mixed circuitsnumber of mixed circuitscontrolprinciplecontrolpower (kw)pewo-thermapartments, semi-attached houses, passive houses, low-energy housesV direct direct 1–12 1 –continu-ous flow principlethermo-static25–50designed to replace central gas boilers in apartments 8t direct direct 1–12 1 1thermo-static/elek-troniccontinu-ous flow principlethermo-static25–50 modular, flexible 12idd indirect direct 1–8 1thermo-static/elek-troniccontinu-ous flow principlethermo-static25–50separation of systems between district heating and heating circuit 19V 4l direct direct 1–12 2 –continu-ous flow principlethermo-static25–504-riser-system for using renewable energy sources, such as solar power and heat pumps 22pewotherm ? direct/ indirect connection between heater and heating system (max. 90°C/Pn 10) ? decentralised domestic hot water heating, flow system (fresh water system) ? for apartments and industry units ? on-wall and in-wall cover (the units can be fixed on the wall or in the wall with a suitable cover to fit.)Consumer Units4System Solutions For Efficient Heat Distributionheating Circuit Manifolds pewosplitdistrict heating stationspewoCadhouse substationspewoV-max, pewoCompactpewoControl – Control- and Communications technologyboiler house ? produces independent heat extraction ? heat distribution systems ? network pump arrangements ? buffer tank integration systems ? boiler house controlCombined heat and Power unitbiomass- Power Plantgeothermal,heat Pumps5Pewo offers design and product advice to support the planning of heat distribution systems for local heating assemblies and buildings. the exchange of ideas between designers and Pewo leads to efficient control strategies and optimal product selection. it also encourages the creation of the prerequisites for a modal network operation. Pewo supports the product-side integration of local contractors into the overall concept.Consumer unitspewotherm, pewoaqua ? start-up ? on site management training ? educating the (at Pewo or on site) installers on how to activate the heating substations ? instructing the operator in the use of the control and communication system ? Certification of installation companies ? system optimization through monitoring and data evaluation after start-upserVicesystem consultation ? complete solutions for efficient heat distribution and domestic hot water heating ? support with design, planning and optimum product selection ? efficient control strategy guidance ? design management training ? system maximisation through monitoring after start-uppewo's commitment6Heating Systems in Buildingscomplete system for heat distribution and domestic hot water preparation central heat generationthermal energy is supplied centrally using district and local heat connections; heat pumps; biomass, oil and gas boilers; solar thermal energy plants or block heat and power plants. the combination of compatible energy sources leads to a high degree of efficiency while using renewable energy founda-tions. Pewo's decentralised systems are perfectly suited for integrating green energy fuels with low flow and return tem-peratures.heating systemsthermal energy in the form of heating-circuit water is distrib-uted in the building through a network of pipes. the heating network usually consists of a flow line and a return line. a cir-culation line is not required. if the building has low tempera-ture heating and a central heat pump an advanced 4-conduit network can be utilized to provide the optimal total system. consumer unitsin each individual apartment, drinking water is heated in a plate heat exchanger not far from, situated in close proximity to the tap, as needed. the continuous-flow principle guarantees high-est drinking water hygiene. the tfs temperature control system developed by Pewo guarantees a constant water temperature and instant availability. if the system is also used to heat the room, room temperature and usage times can be programmed individually with a suitable controller. heat meters and water meters can be integrated in into the flatapartment substation to record consumption data. if desired, the data arecan be re-corded centrally, processed and sent to an accounting centre. (access to the flat is not required).adVantages ? suitable for low flow temperatures ? low return temperature with the use of plate heat exchangers with a high thermal length ? efficiency total system thanks to low flow and return temperatures (heating value) ? suitable for use with renewable energy sources, such as solar power and heat pumps ? exact recording of heat and water consumption by apartment ? energy-saving ? no auxiliary electrical energy required ? high degree of comfort for the consumer ? highest domestic water hygiene due to fresh water technology ? operated in accordance with dVgw (deutscher Verein des gas- und wasserfaches, german gas and water union) guidelines ? individual control of room temperature and usage times ? consistent heat supply to all plants in the system and hydraulic balancing through the use of differential pressure regulators for heating and water heating ? compact design, narrow width ? easy to install ? low operating and maintenance costs ? no circulation lines required ? piping network calculation ? network pump recommendation ? buffer tank dimensioning ? equipment layout ? control strategysystem consultation7with the tfs – thermo fluid system Pewo's engineers have developed a highly responsive, robust and dependable solution for the temperature control process. warm drinking water is always available at the tap at the desired temperature and in the desired amount. the tfs controller reacts immediately to changes in consumption and primary-side flow temperature fluctua-tions to keep the water at a constant tempera-ture. a minimum number of movable compo-nents are the key to this durable and reliable thermostatic temperature control system. for design reasons the tfs controller does not contain components that increase pressure loss and have a negative effect on domestic water comfort. as a result, pressure loss in do-mestic water is reduced to a minimum.pewo tfs – the technically superior domestic hot water heating systempewotherm V page 8 ? slim, compact device ? self-bleeding due to top-side connections ? designed to replace central gas boilers with consumer units ? suitable for renovations and new constructionpewotherm t page 12 ? modular consumer unit ? many different configurations for a variety of uses ? 2nd mixed circuit, floor heating distributor ? many different cabinetspewotherm idd page 19 ? integrated indirect heating circuit ? suitable for local micro heating networkspewotherm 4l page 22 ? heat supply for water heating and room heating at different temperature levels with the aid of 4-riser connection technologypewoaqua d page 30 ? fresh water station for decentralised heating of domestic hot water using the continuous-flow principle without a heating circuitsystem accessories page 26 ? many accessories available for a variety of pur-poses ? completely decentralised supply arrangement with buffer storage charging and network pump systems, controller, and remote reading schemeswater hammer arrestors in pewo consumer stationsthe sudden closure of a drinking water pipeline causes changes in water pressure, which leads to high or low pressure waves (water hammer). water hammer arrestors prevent damage, such as broken pipes, tanks and hoses. they also help to avoid wear and tear of welded seams, connectors and taps as well as noise and vibra-tions caused by pressure waves.informationOvervieweinfach und genial8pewoTherm V Consumer Unitsfor central heating and decentralised domestic hot water heating in dwellings and consumer unitsschemaconnection? heating, direct ? hot water, direct? flow system application? apartment? industry unit? one-family house? semi-attached house? for the change from gas fired boiler to de-central heating supply? specially suitable for apartmentstypespewotherm V 25, 25 kwCode ws1021pewotherm V 35, 35 kwCode ws1022pewotherm V 50, 50 kwCode ws1023HeatingcircuitHot watersystemHeating waterHot waterCold waterpewotherm V720 mm436 mmdepth 170 mmpewotherm V is a heating substation with an integrated heating circuit and domestic hot water preparation follow-ing the hygienic continuous-flow principle and using a plate heat exchanger. the tfs closed loop controller keeps the water temperature constant. the high thermal length of the plate heat exchanger guarantees high end output at low re-turn temperatures. the heating circuit is supplied directly from the district heating system and a thermostatic valve is integrated into the heating circuit return. the heater can be turned off with an optional valve gear and a room tem-perature controller with a weekly program. this device is especially well suited as a replacement for gas boilers. the connections for the district heating system and the water inlet are situated on top. all connections for the consumer unit are situated at the bottom. finally, all connections on the device can be closed with ball valves.strainerwater hammer arrestorplate heat exchanger for domestic hot water heatingspace heating flowdomestic hot waterCold water outletspace heating returnCold water inletdistrictheating flowdistrict heating returntfs-Controller for domestic hot waterheat meter (for heating and domestic hot water)Cold water meter (for cold and domestic hot water)differential pressure controllerValve for space heatingoptionally with room temperature controller9the Piping and instrumentation diagram shows the Consumer unit pewothermV.11 differential pressure controller24 straight-way valve27 air bleed31 air bleed33 Volume meter40 ball valve43 water impact absorber48 Plate heat exchanger59 strainer88 Volumetric current limiter96 heat meter105 regulator for tfs – thermo-fluid-systemdeVice description:basic module ? galvanised base plate ? stainless steel piping, flat sealing ? brass fittings and joints, flat sealingprimary side ? ball valve in flow/return, dn 20, rp 3/4" ? strainer ? adapter for differential pressure controller ? adapter for heat meter, 110 mm, dn 20, rp 3/4" ? sensor pocket for heat meterheating circuit ? ball valve in flow/return, dn 20, rp 3/4" ? thermostatic valve, base part with throttle setting, kvs 1.8domestic hot water heating ? plate heat exchanger with rigid foam insulation ? tfs temperature control system, fixed value setting 45–60 °C ? water hammer arrestor in the domestic hot water circuit ? flow controller in the cold water circuit ? adapter for cold water meter, 110 mm, dn 20, rp 3/4"10on-wall cover440 mm720 mm440 mm (frame 485 mm) 720 mm (frame 765 mm)245 195technical datapewotherm V 25 V 35 V 50primary sidetransfer directMaximum temperature/pressure stage 90 °C/Pn 10Power 37 kw 47 kw 56 kwMaximum volumetric current 1050 l/h 1270 l/h 1420 l/hPressure loss incl. heat meter and differential pressure controller 0.60 bar 0.60 bar 0.70 barkvs-value 1.4 1.7 1.8heating circuitMaximum temperature/pressure stage 90 °C/Pn 10Power at the temperature difference of 20 k 12 kw 12 kw 12 kwMaximum volumetric current at 0,1 bar differential pressure for the heating circuit510 l/hdomestic hot water heating in continous flow systemMaximum temperature/pressure stage 90 °C/Pn 10output at the tap at primary 65/25 °C, secondary 10/45 °C 10 l/min 14 l/min 18 l/minPressure losswithout flow limiter 0.15 barwith flow limiter 0.95 barconnections 3/4" outside threat, flat sealingdimensions/weight without housingdimensions in mm (width x height x depth) 440 x 720 x 170 470 x 720 x 170 470 x 720 x 170weight 15 kg 19 kg 23 kg63mm 74mm 63mm654 mm111 mm 63mm 118mm34mm30mm121,5 mm51,550mm27720 mmTechnical Data and Dimensionsin-wall cover11upon request the housing with the ball valves can be deli vered separately in advance. this means the device itself would only be in stalled during construction, thus protecting it from vandalism, theft and dirt.Optional Extrasoptional extrasoptionsan0001 thermal actuator 230 Vrtr003 room temperature controller, weekly program (batterie)rtr004 room temperature controller, weekly program (230 VaC)rtr005 room temperature controller, daily program (batterie)rtr006 room temperature controller, daily program (230 VaC)Valvesddr001 differential pressure regulator up to 1 m3/hddr002 differential pressure regulator up to 1,5 m3/hhousingsws1075 on-wall cover, short versionws1078 in-wall cover, short versioninstallation assistancepewocode: ddr001 up to 1 m3/hpewocode: ddr002 up to 1,5 m3/h differential pressure regulator* ? differential pressure controller for stabilis-ing the differential pressure in the con-sumer unit in case of sudden load changes ? pre-set differential pressure: 0.2 or 0.3 bar ? kvs 2.5 for a flow rate of < 1,000 i/h ? kvs 4.0 for a flow rate of > 1.000 i/hpewocode: ws1030 ? on-wall cover ? dimension (width x height x depth) 440 x 720 x 245 mm pewocode: ws1031 ? in-wall cover ? dimension (w x h x d) // frame (w x h) 440 x 720 x 195 mm // 485 x 765 mmpewocode: an0001*thermal actuator 230 Vacpewocode: rtr003*pewocode: rtr004*pewocode: rtr005*pewocode: rtr006*room themperature controller*additional information can be found under system accessories on page 30.12pewoTherm T Consumer Unitsfor central heating and decentralised domestic hot water heatingin apartment houses und industry unitspewotherm t is a heat heating substation with up to two integrated heating circuits and domestic hot water prepara-tion following the hygienic continuous-flow principle and using a plate heat exchanger. the tfs controller ensures a constant water temperature. the high thermal length of the plate heat exchanger guarantees high end output at low re-turn temperatures. a cold water outlet and circulation are optional extras. the heating circuit is supplied directly from the heating system and a thermostatic valve is integrated into the heat-ing circuit return. the heater can be turned off with an op-tional valve gear and a room temperature controller with a weekly program. a second mixed heating circuit for adjust-ing the flow temperature and also a heating circuit manifold for floor heating can be integrated into the device as an optional extra.schemaconnection? heating, direct ? hot water, direct? flow system application? apartment? industry unit? one-family house? semi-attached house? industry buildingtypespewotherm t 25, 25 kwCode ws1051pewotherm t 35, 35 kwCode ws1052pewotherm t 50, 50 kwCode ws1053pewotherm t 55, 54 kwCode ws1054pewotherm t 56, 60 kwCode ws1055HeatingcircuitHot watersystemHeating waterHot waterCold waterpewotherm t800 mm630 mmdepth 180 mmCold water inletdistrict heating flowCold water outletdomestic hot water circulationdomestic hot water (behind)2. space heating return (in front)space heating flow (behind)2. space heating flow(in front)district heating returnspace heating returnstrainerwater hammer arrestorplate heat exchanger for domestic hot water heatingtfs temperature control system for domestic hot waterdifferential pressure controllerValve for space heatingoptionally with room temperature controllerpewotherm t, basic module without optional extras13the Piping and instrumen-tation diagram shows the basic module of Consumer unit pewothermt with all kinds of possible options (pictured in gray). 15 3-way valve24 straight-way valve27 air bleed31 fill and drain valve43 water impact absorber48 Plate heat exchanger59 strainer88 Volumetric current limiter96 adaptor for heat meteroptions:11 differential pressure controller33 Volume meter40 ball valve57 Check valve72 actuator86 Circulation pump96 heat meterdeVice description:basic module ? galvanised base plate ? stainless steel piping, flat sealing ? brass fittings and joints, flat sealingprimary side ? strainer ? adapter for differential pressure controller ? adapter for heat meter, 110 mm, dn 20, rp 3/4" ? sensor pocket for heat meterheating circuit 1 ? thermostatic valve, base part with throttle setting, kvs 1.8domestic hot water heating ? plate heat exchanger with rigid foam insulation ? tfs temperature control system, fixed value setting 45–60 °C ? water hammer arrestor in the domestic hot water circuit ? flow controller in the cold water circuitthis station is available with a number of options. the terminal bus can be delivered up front.modular system14dimensions for on- and in-wall cover, short and long version for pewotherm t.1400 mm (short version: 850 mm)210 635 mmtechnical datapewotherm t 25 t 35 t 50 t 55 t 56primary sidetransfer directMaximum temperature/pressure stage 90 °C/Pn 10Power 25 kw 35 kw 50 kw 54 kw 60 kwMaximum volumetric current 540 l/h 760 l/h 1080 l/h 1150 l/h 1300 l/hPressure loss incl. heat meter and differential pressure controller 0.45 bar 0.53 bar 0.45 bar 0.50 bar 0.60 barkvs-value 0.8 1.1 1.6 1.6 1.7heating circuitMaximum temperature/pressure stage 90 °C/Pn 10Power at the temperature difference of 20 k 12 kw 12 kw 12 kw 12 kw 12 kwMaximum volumetric current at 0,1 bar differential pressure for the heating circuit510 l/hdomestic hot water heating in continous flow systemMaximum temperature/pressure stage 90 °C/Pn 10output at the tap at primary 65/25 °C, secondary 10/45 °C 10 l/min 14 l/min 20 l/min 22 l/min 24 l/minPressure losswithout flow limiter 0.15 bar 0.15 bar 0.18 bar 0.18 bar 0.25 barwith flow limiter 0.95 bar 0.95 bar 0.98 bar 0.95 bar –connections 3/4" outside threat, flat sealingdimensions/weight without housingdimensions in mm (width x height x depth) 630 x 833 x 180weight 20 kg 22 kg 23 kg 25 kg 27 kgTechnical Data and Dimensions630 mm776 mm62mm 65mm 65mm 65mm 65mm 65mm 65mm 95,5mm56,5 42380mm 42144mm120,5mm170mm56,51400 mm (short version: 850 mm)210 635 mm15Optional extrasoptionswärmedämmungwd0003 heat insulation for plumbing system accessoriesan0001 thermal actuator, 230 Vrtr003 room temperature controller, weekly program, batteryrtr004 room temperature controller, weekly program, 230 Vrtr005 room temperature controller, daily program, batteryrtr006 room temperature controller, daily program, 230 Vws1119 Connecting block and pump logicddC902 digital heating circuit controller with flow temperature sensoratf0001 outside temperature sensorrtf0001 room temperature sensorfas0001 remote meter reading system up to 25 metersfas0002 remote meter reading system up to 60 metersfas0003 remote meter reading system from 60 meters (on request)Valvesddr001 differential pressure controller up to 1 m3/hddr002 differential pressure controller up to 1.5 m3/hws1110 return temperature limiterws1111 set of emptying and air bleedingPumpsws1117 2nd direct space heating circuitws1103 Circulation-setws1115 heating circuit with thermostatic mixed modulews1116 heating circuit with elektric mixed modulePh0005 high efficiency pumpCold waterinletCold water outletDomestic hot water circulationDomestichot waterDistrictheatingflow2. Space heatingreturnDistrict heating return1. Spaceheatingflow1. Spaceheatingreturn2. Space heating flowoptionsZählerws1100 domestic cold water outlet and adapter for cold water meterws1101 adapter for cold water meterwZ0002 heat meter Qn 1.5wZ0004 heat meter Qn 1.5, M-buswZ0010 Cold water meter Qn 1.5wZ0012 Cold water meter Qn 1.5, M-bushousingsws1075 on-wall cover, short versionws1076 on-wall cover, long versionws1077 floor fill shield, floor heatingws1078 in-wall cover, short versionws1079 in-wall cover, long versionws1080 floor fill shield, long version, floor heatingfloor heating distributor with shut-off valvesws1120 floor heating distributor 2 x with 6 shut-off valvesws1121 floor heating distributor 3 x with 6 shut-off valvesws1122 floor heating distributor 4 x with 6 shut-off valvesws1123 floor heating distributor 5 x with 6 shut-off valvesws1124 floor heating distributor 6 x with 6 shut-off valvesws1125 floor heating distributor 7 x with 6 shut-off valvesws1126 floor heating distributor 8 x with 6 shut-off valvesws1127 floor heating distributor 9 x with 6 shut-off valvesws1128 floor heating distributor 10 x with 6 shut-off valvesMounting barsws1070 Mounting bar with 6 Valvesws1071 Mounting bar with 7 Valvesws1072 Mounting bar with 8 ValvesConnections16pewocode: ws1100adapter for cold water meter and domestic cold water outlet* ? cold water outlet in the apartment for the consumer units pewotherm and pewoaqua for installation of a cold water meter to measure total domestic consumption in a dwelling ? 1 x adapter for cold water meter in the cold water inlet, 3/4" x 110 mm, and cold water connection with shutoff in the residencepewocode: ws1101adapter for cold water meter* ? 1 x adapter for cold water meter in the cold water inlet, 3/4" x 110 mm, for installations without a cold water outlet in the stationpewocode: ddr001 up to 1 m3/hpewocode: ddr002 up to 1,5 m3/h differential pressure controller* ? differential pressure controller for stabilis-ing the differential pressure in the con-sumer unit in case of sudden load changes ? pre-set differential pressure: 0.2 or 0.3 bar ? kvs 2.5 for a flow rate of < 1,000 i/h ? kvs 4.0 for a flow rate of > 1.000 i/hpewocode: ws1110return temperature limiter* ? in the heating circuit ? when installed in the consumer unit's return, the temperature limiter keeps the return temperature of the heating circuit at a preset level. if the return temperature goes up, the valve closes, reducing the flow rate in the heating circuit. if the return temperature goes down, the valve opens and the flow rate increases.pewocode: ws11172nd direct space heating circuit* ? Connection for an additional direct space heating circuit, with shutoff and zone valve for regulating the heating circuit ? optional installation of an actuator*optional extras are completely factory mounted in the consumer unit and for leaks tested on.17pewocode: ws1115heating circuit with thermostatic mixed module* ? for control of the flow temperature ? controlled by an injection circuit with a thermostatic control valve ? standard range of adjustment between 20–50 °C ? circulation pump ? safety temperature monitor for switching off the circulation pump if the temperature is exceeded ? the temperature sensor is set up to prevent overflow of the hot water when the pump is off.*optional extras are completely factory mounted in the consumer unit and for leaks tested on.pewocode: ws1103circulating set* ? for supplying distant taps, consisting of: type Z15 circulating pump, analogue time switch, check valve ? timer included ? safety valvepewocode: ws1116heating circuit with electric mixed module* ? determined by outside or inside temperature with an appropriate controller ? temperature control by means of an injection circuit with control valve ? the corresponding ddC controller can be found on page 30 ? the corresponding 3-position actuator can be found on page 30 ? circulation pump ? safety temperature moni-tor for switching off the circulation pump if the temperature is exceededpewocode: ph0005high efficiency pump ? available as an option combined with the electric or thermostatic mixer modulepewocode: ws1111set of emptying and air bleeding ? ball valves with hose connectors can be integrated into the flow and return on the primary side as an optional extra18pewocode: ws1075, short versionpewocode: ws1076, long versionon-wall cover ? dimension (width x height x depth) short version 635 x 850 x 210 mm long version 635 x 1400 x 210 mmpewocode: ws1078, short versionpewocode: ws1079, long version in-wall cover ? dimension (width x height x depth) // frame (w x h) short version 635 x 880 x 215 mm // 680 x 925 mm long version 635 x 1400 x 215 mm // 680 x 1440 mm ? attractively designed housing, galvanised flush-moun-ted unit frame and fitted door with casing, powder-coated in white (similar to ral 9010) ? lockable fitted door ? air inlets/vents to prevent heat buildup ? floor fill shield ? synthetic door available upon requestpewocode: ws1077, for on-wall coverpewocode: ws1080, for in-wall coverfloor fill shield ? for the long version of on- and in-wall cover pewocode: wd0003 heat insulation for plumbing ? insulation of base module and mixed heating circuit ? outflow insulation in the second heating circuit ? optional insulation of the circulation circuitpewocode: ws1120 bis ws1128 floor heating distributor with shut-off valves on additional base plate ? heating manifold wired ready for connection for 2–10 outlets, mounted on a base plate ? ball valves connection set for fixing to the consumer unit ? suitable for in- and on-wall cover ? brass heating circuit manifold dn 32 for floor heating systems ? 2 x fill and drain valves for the flow and return ? adjustable flow meter and zone regulating valve (can be retrofitted with an actuator) integrated into the outflowpewocode: ws1070 bis ws1072mounting bar with Valves ? mounting bar with 6 to 8 valves per consumer unit, de-pending on configuration ? can be pre-installed on the wall (on-wall cover) or in the in-wall (short version) cover) ? after that, all connections can be installedmade at the customer's site ? lastly, the station can be installed free from builder's dust19tfs temperature control system for heating, indirect heating circuittfs temperature control system for domestic hot water heatingschemaconnection? heating, indirect ? hot water, direct? flow system application? apartment? industry unit? one-family house? semi-attached house? separation of sys-tems between district heating and heating circuittypespewotherm idd 35, 35 kwCode ws 1010 pewotherm idd 50, 55 kwCode ws 1011 pewotherm iddpewotherm idd encased in a Pst-sandwich framepewoTherm IDD Consumer Unitwith indirect heating and decentral domestic hot water heating in apartment houses and industry unitsHeating circuitHot water systemHeatingwaterHot waterCold waterpewotherm idd is a heating substation with an indirect heating circuit and domestic hot water preparation, follow-ing the hygienic continuous-flow principle and using a plate heat exchanger. the tfs controller keeps the water tem-perature constant. the high thermal length of the plate heat exchanger guarantees high end output at low return tem-peratures. a plate heat exchanger separates the heating cir-cuit from the heating system. the heating circuit is supplied by an integrated circulating pump. an optional expansion vessel for the heating circuit can be added on the left-hand side of the system. the flow temperature of the heating cir-cuit can be operated by a thermostatic tfs controller (fixed value) or by an electronic controller, determined by atmo-spheric conditions. pewotherm idd is integrated in a Pst-housing and is optimally suited for apartments in large buildings and for micro heating systems.Cold water inletdistrict heating flowdomestic hot waterspace heating flowdistrict heating returnspace heating return680 mm520 mmplate heat exchanger for heating and domestic hot water heatingdifferential pressure controllerheat meter (for heating and domestic hot water)Circulation pumpstrainer20 ? differential pressure controller, mounted on-site ? room temperature controller, choice of mains-opera-ted or battery operated ? electric heating circuit module ? radio module for heat meter ? remote meter reading system ? 12 l expansion vessel with connection optional extrasdeVice description:basic module ? Pst – Pewosandwich technology – polyurethane foam frame and heat insulation in one piece ? housing cover, heat-insulating polyurethane foam with a powder-coated steel faceplate ? stainless steel piping, flat sealing ? brass fittings and joints, flat sealingprimary side ? ball valve in flow/return, dn 20, rp 3/4" ? strainer ? adapter for differential pressure controller ? adapter for heat meter, 110 mm, dn 20, rp 3/4" ? sensor pocket for heat meterheating circuit 1 ? stainless steel plate heat exchanger for separation of systems ? tfs temperature control system, fixed value setting 50–70 °C ? Circulation pump for heating circuit supply ? ball valve in flow/return, dn 20, rp 3/4"Districtheatingreturn Districtheatingflow cold waterdomestichot waterSpaceheatingreturn SpaceheatingflowDDC room controllerAdapterthe Piping and instrumentation diagram shows the Consumer unit pewothermidd with all kinds of possible options(pictured in gray). 5 Connection pressure24 straight-way valve27 air bleed31 fill and drain valve40 ball valve42 Manometer45 safety valve48 Plate heat exchanger59 strainer75 temperature sensor86 Circulation pump88 Volumetric current limiter105 tfs-controlleroptions7 ddC-controller11 differential pressure controller96 heat meter43 expansion vesseldomestic hot water heating ? stainless steel plate heat exchanger ? tfs temperature control system, fixed value setting 45–60 °C ? water hammer arrestor in the domestic hot water circuit ? flow controller in the cold water circuit21technical datapewotherm idd 35 idd 50primary sidetransfer indirectMaximum temperature/pressure stage 90 °C/Pn 16Power 47 kw 56 kwMaximum volumetric current 1300 l/h 1420 l/hPressure loss incl. heat meter and differential pressure controller 0.70 bar 0.70 barkvs-value 1.6 1.7heating circuit Maximum temperature/pressure stage 90 °C/Pn 10Power 12 kw 12 kwPrimary sidetemperature 70/50 °Cvolumetric current 518 m2/hsecundary sidetemperature 60/40 °Cvolumetric current 518 m2/hdomestic hot water heating in continous flow systemMaximum temperature/pressure stage 90 °C/Pn 10output at the tap at primary 65/25 °C, secondary 10/45 °C 14 l/min 18 l/minPressure losswithout flow limiter 0.15 barwith flow limiter 0.95 barconnections 3/4" outside threat, flat sealingdimensions/weight without housingdimensions in mm (width x height x depth) 680 x 520 x 240weight 26 kg 29 kg 162 mm 157,5 mm 127,5 mm 184,5 mm40mm671 mm144 mm63mm81mm 159,5 mm62mm509,5 mma cornerstone in the development of a new generation of systemssuperior heat insulationPlumbing and components are housed three- dimensionally in a noncorrosive, sandwich-style cabinet made of closed-cell polyurethane foam.compact designthis innovative construction format replaces the traditional support frame with a sandwich-style cabinet. heat insulation, component attachment and wall bracket form one unit. these systems are very compact and lightweight. they are mechanically stable, stackable and impressively easy to handle. Pst is also extremely easy to service. all components are accessible once the front part of the cabinet has been removed.pst – pewo sandwich technology22pewoTherm 4L Consumer Unit4-riser-system for heating and domestic hot waterpewotherm 4l is a 4-riser consumer unit with integrated heating circuit and domestic hot water preparation, fol-lowing the hygienic continu-ous-flow principle and using a plate heat exchanger. the tfs controller keeps the wa-ter temperature constant. the high thermal length of the plate heat exchanger guarantees high end output at low return temperatures. on the primary side the device is hooked up to 2 flows with dif-ferent temperature levels. domestic hot water heating and heat-ing each have a separate flow and return. hot water (> 45 ºC) and heating (graduated) can be supplied by different heat gen-erators. renewable heat generators, such as solar heat or heat pumps, as well as condensing boiler technologies require low flow and return temperatures for efficient operation. heating-circuit water with a high flow temperature is only made avail-able for the preparation of domestic hot water. the heating sys-tem is provided with heating-circuit water at a lower temperature level. the heating circuit is supplied directly from the low tem-perature flow. a thermostatic valve is integrated into the heating circuit return. the heater can be turned off with an optional valve gear and a room temperature controller with a weekly program. an optional second space heating circuit (for a heated towel rail, for example) can be supplied from the high temperature flow. no auxiliary electric power is required for operation.the device can also be operated in a 3-conduit system with a common return line.schemaconnection? heating, direct ? hot water, direct? flow system application? apartment? industry unit? one-family house? semi-attached house? for using floor heating systems and renewable heat generatorstypespewotherm 4l, 35 kwCode ws1150pewotherm 4l, 50 kwCode ws1151pewotherm 4l, 55 kwCode ws1152pewotherm 4l, 56 kwCode ws1153Heating circuit Hot watersystemHeatingwater HTHot waterCold waterHeating water NT Heizkreispewotherm 4l660 mm600 mmtiefe 165 mmdistrict heating flow htdistrict heating return ntdistrict heating return htCold water inletspace heating flowdistrict heating flow ntspace heating returnstrainerwater hammer arrestorplate heat exchanger for domestic hot water heatingtfs temperature control system for domestic hot water heatingdifferential pressure controllerspace heating flowspace heating returnCold water outletdomestic hot wateradapter for cold water meteradaptor for heat meter –domestic hot water or heating23deVice description:basic module ? galvanised base plate ? stainless steel piping, flat sealing ? brass fittings and joints, flat sealingprimary side 1 ? ball valve in flow/return, dn 20, rp 3/4" ? strainer ? differential pressure controller ? adapter for heat meter, 110 mm, dn 20, rp 3/4" ? sensor pocket for heat meterprimary side 2 ? ball valve in flow/return, dn 20, rp 3/4" ? strainer ? differential pressure controller ? adapter for heat meter, 110 mm, dn 20, rp 3/4" ? sensor pocket for heat meterheating circuit nt ? ball valve in flow/return, dn 20, rp 3/4"domestic hot water heating ? Plate heat exchanger with in a heat-insulating polyure-thane foam ? tfs temperature control system, fixed value setting 45–60 °C ? water hammer arrestor in the domestic hot water circuit ? flow controller in the cold water circuit ? adapter for cold water meter, 110 mm, dn 20, rp 3/4"the Piping and instrumentation diagram shows the Consumer unit pewotherm 4l. 11 differential pressure controller24 straight-way valve27 air bleed31 air bleed33 Volume meter40 ball valve43 water impact absorber48 Plate heat exchanger59 strainer88 Volumetric current limiter96 heat meter105 regulator for tfs – thermo-fluid-systemheating network ht(high temperature)e.g. for domestic hot water heating with flow temperature of 55°Cheating network nt(low temperature)e.g. for space or underfloor heating with flow temperature of 35°C24technical datapewotherm 4l 35 4l 50 4l 55 4l 56primary sidetransfer directMaximum temperature/pressure stage 90 °C/Pn 10Power 26 kw 37 kw 40 kw 45 kwMaximum volumetric current 760 l/h 1080 l/h 1150 l/h 1300 l/hPressure loss incl. heat meter and differential pressure controller 0.53 bar 0.45 bar 0.50 bar 0.60 barkvs-value 1.1 1.6 1.6 1.7heating circuit Maximum temperature/pressure stage 90 °C/Pn 10Power 12 kw 12 kw 12 kw 12 kwMaximum volumetric current at 0,1 bar differential pressure for heating circuit 510 l/minat the temperature difference of 20 kdomestic hot water heating in continous flow systemMaximum temperature/pressure stage 90 °C/Pn 10output at the tap at primary 55/25 °C, secondary 10/45 °C 11 l/min 15 l/min 16 l/min 18 l/minPressure losswithout flow limiter 0.15 bar 0.18 bar 0.18 bar 0.18 barwith flow limiter 0.95 bar 0.98 bar 0.95 bar 0.95 barconnections 3/4" outside threat, flat sealingdimensions/weight without housingdimensions in mm (width x height x depth) 630 x 833 x 180weight 29 kg 31 kg 33 kg 35 kg25Performance Chartsfor consumer units pewotherm V, pewotherm t und pewotherm 4l6 8 10 12 14Domestic hot water tap load [l/min]200250300350400450500550District heating ?ow rate [l/h]12141618202224District heating return temperature [°C]55°C55°C60°C65°C70°C70°C65°C60°CpewoTherm V25 and T25 – Output domestic hot water, 10 °C / 45 °CFlow temperaturedistrict heating7 9 11Domestic hot water tap load [l/min]200300400500600District heating ?ow rate [l/h]1214161820222426District heating return temperature [°C]60°C65°C70°C70°C65°C60°CpewoTherm V25 and T25 – Output domestic hot water, 10 °C / 50 °CFlow temperaturedistrict heating6 8 10 12 14 16 18 20Domestic hot water tap load [l/min]200300400500600700800District heating ?ow rate [l/h]1214161820222426District heating return temperature [°C]60°C65°C70°C70°C65°C60°CpewoTherm V35, T35, 4L 35 – Output domestic hot water, 10 °C / 45 °CFlow temperaturedistrict heating50°C 55°C55°C50°C6 8 10 12 14 16Domestic hot water tap load [l/min]200300400500600700800District heating ?ow rate [l/h]121416182022242628District heating return temperature [°C]60°C65°C70°C70°C65°C60°CpewoTherm V35, T35, 4L 35 – Output domestic hot water, 10 °C / 50 °CFlow temperaturedistrict heating55°C55°C7 9 11 13 15 17 19 21 23 25 27Domestic hot water tap load [l/min]2004006008001000District heating ?ow rate [l/h]1214161820222426District heating return temperature [°C]60°C65°C70°C70°C65°C60°CpewoTherm V50, T50, 4L 50 – Output domestic hot water, 10 °C / 45 °CFlow temperaturedistrict heating55°C55°C50°C50°C6 8 10 12 14 16 18 20 22Domestic hot water tap load [l/min]2004006008001000District heating ?ow rate [l/h]121416182022242628District heating return temperature [°C]60°C65°C70°C70°C65°C60°CpewoTherm V50, T50, 4L 50 – Output domestic hot water, 10 °C / 50 °CFlow temperaturedistrict heating55°C55°C26pewocode: an0001actuator 230 Vac ? deliver separately, mounting on-site ? thermal actuator, 230 V for control valves ? engaged power-off ? ingress Protection iP 54 ? function display ? open-function ? dimensions (w x h): ca. 45 x 54 mmpewocode: rtr003*pewocode: rtr004**room temperature controller ? weekly timer and manual operation ? delivered separately, installed on site ? a different program can be set for each day of the week ? digital room thermostat with lCd display ? can be set to a temperature range of 5–35 °C ? normal operation or energy-saving operationpewocode: rtr005*pewocode: rtr006**room temperature controller ? with day timer ? normal operation or energy-saving operation ? automatic switching between operating modes optionalSystem Accessoriespewocode: ws1119connecting block and pump logic ? Controller manifold for the connection of six room thermostats with a maximum of 12 actuators 230 V ? with integrated pump logicpewocode: ddc902controller for weather- or room-controlled flow temperature regulation ? digital heating circuit controller for regulating room and flow tempera-ture ? automatic changeover from winter to summer operation (heat/no heat) ? additional inputs are needed for an external room temperature sensor, e.g. cabinet mounting ? 3-point outlet 230 V for 3-way mixing valve ? pure white colour ? flow temperature sensorpewocode: atf0001outside temperature sensor ? outside temperature sendor for measuring outdoor temperaturepewocode: rtf0001room temperature sensor ? room temperature sensor for measuring room temperature in dry rooms ? suitable for all heating systemsroom temperature controller 003–006*with battery** 230 VaC27interfaces ? Mbus (short-circuit-proof, din en13757-2/3 and en1434-3) for reading of meters ? ethernet for sending meter data over the network/internet ? rs232 ? optional internet connection (dsl, cable) types ? pewosMb 25, up to 25 meters ? pewosMb 60, up to 60 meters ? pewosMb 100, up to 100 meters ? pewosMb 150, up to 150 meterspewocode: lanrdd10pewosmb | smart meter boxwall-mounted control cabinet with communication hub for remote meter reading the pewosmartMeterbox (pewosMb) is a communication-ready central unit that provides consumption data for each in-dividual apartment and for the energy centre. in combination with the pewolive web portal Pewo delivers a powerful smart Meter platform. Meters for heat, water, electricity and gas are connected to a measuring bus (Mbus). the pewosMb commu-nicates with the meters located in the apartments and in the energy centre. Consumption data is collected, processed, stored and sent. with this solution Pewo offers an infrastructure for the provi-sion of consumption data to measurement service providers. the data can be made available to the measurement service, daily, weekly, monthly or on a certain target date. different data formats, including excel, CsV, XMl and sQl, are available. individual interfaces can be provided based upon customer re-quirements. this guarantees safe data processing for account-ing and erP systems. the box – a wall-mounted control cabinet – is installed in the energy centre and contains all necessary hardware components. the hardware is configured separately for each building.power supply ? 230 VaCservices ? data formats: XMl, excel, CsV, sQl ? data access: automatic message transmission by email, pewolive web portal with database connectionpewoThermHeatmeterpewoThermHeatmeterpewoThermHeat meterpewoSMBSmart Meter BoxMBushousingunit 1housingunit 2housingunit nHeatGasWaterElectricityHeizzentraleInternetNetworkElectricityWaterElectricityWaterElectricityWaterapplicationCentralised remote reading of heater, cold water, gas and electricity meters and web-based provision of data28pewocode: ws1140differential pressure regulator setthe differential pressure regulator in the apartment substa-tion can be replaced with a differential pressure regulator in the line if several apartment substations are connected in parallel to the line. the differential pressure regulator set-ting corresponds to the pressure loss in the apartment sub-station plus the pressure loss of heat meter and piping.buffer tank psfsteelheight incl. connectionstilted heightdiameter without/with laggingconnections (inside thread)maintenance aperture (fl)tare weighttype Code mm mm mm ww/kw Vl/rl ad/id mm kg500 l sP5500 1640 1670 850 8 x 1 1/2" 4 x 1/2" 240/178 109800 l sP5800 1785 1750 990 8 x 1 1/2" 4 x 1/2" 240/178 1151000 l sP51000 2136 2070 990 8 x 1 1/2" 4 x 1/2" 240/178 1321500 l sP51500 2295 2270 1200 8 x 1 1/2" 4 x 1/2" 240/178 1762000 l sP52000 2465 2610 1300 8 x 1 1/2" 4 x 1/2" 240/178 2413000 l sP53000 2845 on request 1250 8 x 1 1/2" 4 x 1/2" 240/178 on request5000 l sP55000 3035 auf anfrage 1600 8 x 1 1/2" 4 x 1/2" 240/178 auf anfragead external diameter, id internal diameterpewocontrol l1/2 | buffer tank charge controlcharge control for buffer tanks by means of a boiler/boiler cascade ? controller for heating system in combination with pewotherm consumer unitsl1 control for one boiler/ l2 cascade control for two boilers.the device controls all boiler request functions and optimis-es the runtime and performance of the charging pump used to stratify the layers of a buffer tank by outside temperature or by set value. the controller activates the main boiler if the tank sensor falls below the set value (start of charging). the next boiler is activated when the second tank sensor falls below the set value, if the pre-set time delay has ex-pired. the P1/P2 tank charging pump then starts up at the set minimum delivery rate. if the flow temperature exceeds the set value during charging of the tank the pump delivery rate is increased by the controller. boiler demand is reduced if the temperature indicated by the tank sensors exceeds the shutdown value. Charging pump P1/2 continues to run for as long as the flow temperature (during charging) is at least 1k higher than the set value and the time delay has not expired. the temperature used for charging the boiler at the given output is controlled by modulating the amount of pewocollectbuffer tank, steel psfby using a buffer tank the heat generator can be configured to the room heating system. the buffer tank stores thermal energy in the form of heating-circuit water to cover peaks in demand during domestic hot water heating. the efficiency of boiler plants is increased due to longer boiler runtimes, leading to reduced pollution.water that flows through the boiler. the pump controller can increase the charging temperature by reducing the amount of water flowing through the boiler. alternatively, the pump controller can reduce the charging temperature by increas-ing the amount of water flowing through the boiler. the device can only be used to control direct-acting, stepped wet rotor pumps. Pumps with integrated controls or with electronic on, off and switchover controls cannot be oper-ated with this device.pewocontrol l3 | buffer tank charge controlcharge control for buffer tanks via network or primary pressure manifold ? controller for heating system in combination with pewotherm consumer unitsthe device controls and regulates all heat generator re-quests and optimises the runtime and performance of the charging pump used to stratify the layers in a buffer tank by outside temperature or by set value. the controller activates the heat generator and opens the valve if the tank sensor's temperature falls below a set value (start of charging). the tank charging pump starts up at the set minimum output. if the flow temperature for tank charging exceeds the set val-29ue the pump delivery rate is increased by the controller. the temperature used for charging the boiler at the given output is controlled by changing the amount of water that flows through the plate heat exchanger via the primary valve and the tank charging pump. the pump controller can increase the charging temperature by reducing the amount of water that flows through the plate heat exchanger. the process is reversed to reduce the tank charging temperature. the primary return flow temperature sensor exerts a restrict-ing influence on the valve to avoid exceeding the maximum allowable return flow temperature. the request for heat generation is reduced and the valve is closed if the tank sensor's temperature exceeds the shut-off value. the tank charging pump is then switched off (end of charging). the l3 controller can be used for the direct control of stepped wet rotor pumps, without integrated controls or electronic on, off and switchover controls, or to operate an e-pump controllable with a 0..10 V analogue signal. the valve must have a 3-point drive for 230 V aC/max. 100 ma.pewocontrol np1 | network pump controltemperature-based regulation of controllable electronic pumps (0-10 V) with integrated constant pressure regulation ? Controller for network pumps in district heating stations in connection with pewotherm conumer unitthe device measures the difference in temperature between a heating circuit's flow and return lines. the difference be-tween set value and actual value (temperature difference) is used to calculate the constant pressure required for the heating circuit at that time. if the temperature difference is too small the controller detects an oversupply of the heating circuit and reduces the output signal for the constant pres-sure based on the difference. if the temperature difference is too high the controller detects an undersupply of the heating circuit and increases the output signal for the constant pres-sure based on the difference. the minimum constant pres-sure required to guarantee a basic supply for the system can be set with an adjustable minimum output signal. the set point consists of one value for the increased and one value for the decreased operation of the system. the timing of the increase or decrease is determined by the internal clock or by an external contact connected to the controller's gate input. the red led lights up and the differential relay is activated if the temperature difference is less than 5 k or if the flow temperature falls below 45 ºC for more than 60 minutes. if dual pumps are used the device switches to the other pump.pewocontrol np2 | network pump control with mixer controlnetwork pump control with mixer control, continuous actual value control based on differential pressure or temperature difference ? Controller for network pumps in district heating stations in connection with pewotherm consumer unitContinuous actual value management, based upon pressure or temperature difference for a 0-10 V controllable (dual) e-pump with mixer control for a 230 V, 3-point actuator or a 0..10 V actuator. the control always sets the initial value of the heating circuit pump to the higher of the two pump performance values calculated in parallel from the pressure or temperature difference. this method facilitates a con-tinuous calculation of the required effective pump perform-ance. Pressure and/or supply must not fall below an adjust-able minimum value in order to guarantee the basic supply required by the system at all times. the device measures the pressure difference between the heating circuit's flow and return lines. the pump capacity required by the heating circuit is calculated from the difference between set value and actual value (temperature difference). if the tempera-ture difference is too small the controller detects an under-supply of the heating circuit and increases the calculated pump capacity in accordance with the difference. if the temperature difference is too high the controller detects an oversupply of the heating circuit and reduces the calculated pump capacity in accordance with the difference. the flow temperature is managed by the mixer control on a gliding scale based upon outside temperature.30schemaconnection? hot water direct? flow system application? apartment? industry unit? one-family house? semi-attached house? industry buildingtypepewoaqua d 25, 25 kwCode Pa0151pewoaqua d 35, 35 kwCode Pa0152pewoaqua d 50, 50 kwCode Pa0153pewoaqua d 70, 50 kwCode Pa0154pewoaqua dTrinkwasser-erwärmungHeiz-wasserWarmwasserKaltwassertype designheating water primarily 70/25 °cdomestic hot water 10/60 °cheating water primarily 65/25 °c domestic hot water 10/60 °cheating water primarily 55/25 °c domestic hot water 10/45 °c**article number*peak output at the tap/output nominal rating l /min***housing units*peak output at the tap/output nominal rating l /min***housing units tap output l /min ***housing unitsd 25 tfs s 14 11 1 1 12 9 1 1 13 1 Pa0151d 35 tfs s 18 14 2 1 15 11 1 1 16 1 Pa0152d 50 tfs s 22 18 3 2 18 14 2 1 20 1 Pa0153d 70 tfs s 23 19 4 2 20 15 3 2 21 3 Pa0154*peak output at the tap: according to dVgw worksheet w551 with reference to din 4708 the outlet temperature of domestic hot water can go below 60 ºC during peak demand times. to avoid oversiz-ing, configuration of the system for peak demand times is recommended. *output nominal rating: this is the nominal output of the system at an outlet temperature for domestic hot water of 60 ºC. **please note that according to dVgw worksheet w551, large-scale plants must always provide domestic hot water at an outlet temperature of 60 ºC and at a circuit return temperature of 55 ºC for 16 out of 24 hours (excluding peak demand time as per din 4708). ***number of housing units: simultaneity as per the technical university of dresden (tu-dresden), average tap output per flat is 30 kwpewoAqua D Domestic Hot Water Heaterfresh water station for heating systems with differential pressurepewoaqua d produces domestic hot water using the hygienic continuous-flow system and a plate heat ex-changer. the tfs controller keeps domestic hot water at a constant temperature. the high thermal length of the plate heat exchanger guarantees high end output at low return temperatures. ? for decentralised domestic hot water heating ? design s for 1–4 housing units ? thermostatic tfs controller without auxiliary energy ? no circulation required (if keeping to the 3 l limit) ? low flow temperatures to 50 °C ? ideal for condensing boilers, heat pumps, solar power ? low return temperatures to 20 °C ? low investment costs ? can be combined with heat meterspewoaqua d tfspewoAqua DRTSF25-70 kWWMZQn 1.5pewoAqua DRTSF25-70 kWWMZQn 1.5pewoAqua DRTSF25-70 kWWMZQn 1.555°C25°C31Annexlaw of simultaneitywe dintu dresden1 1 12 2 2 (1)3 2 24 3 25 3 3 (2)6 3 37 3 38 4 39 4 310 4 311 4 312 4 313 4 314 5 315 5 416 5 417 5 418 5 419 5 420 5 421 5 422 5 423 6 424 6 425 6 426 6 427 6 428 6 429 6 430 6 4we dintu dresden31 6 432 6 533 6 534 6 535 6 536 7 537 7 538 7 539 7 540 7 541 7 542 7 543 7 544 7 545 7 546 7 547 7 548 7 549 7 550 7 551 7 552 7 553 7 554 8 555 8 556 8 557 8 558 8 659 8 660 8 6these table shows the number of tapping housing units (we = housing unit) in depending on the number of flats with reference to din 4708 (din) compared to measurements of the technical university of dresden (tu-dresden).depending on how a building is used the amount of water needed can vary greatly. distinctions are made based on whether the building is a residential dwelling, hotel, office or administrative building, shop, hospital or school, to name just a few examples.for example, using domestic hot water production in a multi-family dwelling, the process is as follows: the rate of flow is calculated from the tapping points, it is highly probable that several tapping points will be used simultaneously. this is the peak flow rate, which represents actual domestic hot water demand. it must be noted that the ratio of installed sanitary fixtures to actual simultaneous usage is not linear. logically, the probability of use for a single existing sanitary fixture is 1, however, it is not 20 for 20 sanitary fixtures, as they will not all be used simultaneously. this decreases the probability for use of a specific sanitary fixture.the tu dresden has determined that this probability is even lower than expected. they examined the demand for domestic hot water in a building with 20 housing units. hot water was used simultaneously in no more than 3 flats. in a building with 160 housing units, simultaneous use occurred in 6 flats. a linear view of usage would lead to a simultaneous use of do-mestic hot water in 24 flats, or four times as many as are actually required.32©Copyright 2010 Pewo energietechnik gmbh.references (excerpt): twk Versorgungs ag, Versorgungsgebiet kaiserslautern · eVo energieversorgung offenbach ag, Versorgungsgebiet offenbach · MVV energie ag, Versorgungsgebiet Mannheim, nahwärme wiesloch · eswe Versorgungs ag, Versorgungsgebiet wiesbaden, u.s. air base wiesbaden-erbenheim · twl technische werke ludwigshafen ag, Versor-gungsgebiet ludwigshafen · stadtwerke heidelberg ag, Versorgungsgebiet heidelberg · edg energiedienstleistungsgesell-schaft rheinhessen-nahe mbh, nahwärmenetz waldalgesheim · esw energiesparwerk gmbh & Co., altötting, deutschland · MVV energie ag, bad endorf, deutschland · bbt thermotechnik gmbh, berlin · berliner energie agentur · bewag ag & Co.kg, berlin · Charite universitätsklinikum med. fakultät der humboldt universität zu berlin · gropius-Passagen, berlin · hotel adlon, berlin · niederländische botschaft, berlin · olympiastadion, berlin · Österreichische botschaft, berlin · Palais am klostergarten, berlin · sony Center, berlin · tierpark, berlin · wohnsiedlung schweizer Viertel, berlin · Zdf-studio, berlin · stadtwerke bochum · hardthöhe Verteidigungsministerium, bonn · enVia, Chemnitz, Cottbus · drewag stadtwerke dres-den · kongress Center, dresden · Milit. Museum, dresden · stadtwerke düsseldorf ag · baugebiet, düsseldorf wittlar · stadtwerke erfurt · universität, erlangen · MainoVa, frankfurt/Main · bürocenter City-west, frankfurt/Main, · flight training Center airport, frankfurt/Main · freiberger wärmeversorgung · stadt geisingen · rock & Popmuseum, gronau · energiever-sorgung halle · Martin-luther-universität, halle · airport hamburg, hamburg · fachhochschule, hamburg · saP-schulungs-zentrum, hamburg · stadtwerke hannover ag · einkaufscenter bothfeld, hannover · hauptbahnhof, hannover · fernwärme gmbh, hohenmölsen · bioenergiedorf Jühnde · stadtwerke kiel ag · kai-City, kiel · kap am südkai, köln · Medienpark, köln · rheinau hafen, köln · stadtwerke leipzig gmbh · Zentral-Messepalast, leipzig · flughafen, leipzig/halle · bbt thermo-technik gmbh, lollar · theater, Magdeburg · stadtwerke Merseburg gmbh · fernwärmeversorgung niederrhein, Moers · stadtwerke München · eV nordhausen gmbh · flughafen, nürnberg · two, ostritz · Modellstadt, ostritz · fernwärme, Pie-sendorf · innovative energie für Pullach gmbh · biomasse hw, reit im winkl · naturwärme reit im winklgmbh & Co.kg · ostseestadion, rostock · stadtwerke saarbrücken ag · stadtwerke traunstein gmbh & Co.kg · fernwärme-Verbund saar gmbh, Völklingen · stadtwerke wernigerode · kirklees, (gb) · stadtwerke bruneck (i) · genossenschaft heizwerk feldthurns (i) · fernheizwerk lajen (i) · fernheizwerk klausen gmbh c/o sel ag, latzfons (i) · fernheizwerk olang ag, olang (i) · bio-masse-heizwerk ormea (i) · tlr s. Martino di Castrozza (i) · heizwerk sarnthein gmbh (i) · fernheizwerk sexten gmbh (i) · energiegenossenschaft sulden genmbh (i) · terenten (i) · fernheizkraftwerk toblach innichen (i) · fernheizwerk welsberg-niederdorf genmbh, welsberg, (i) · beckerich (lu) · bertrange (lu) · eich-Mühlenbach (lu) · howald (lu) · luxembourg (lu) · Mertert-wasser billig (lu) · Moutfort (lu) · strassen (lu) · khaan holding, brauhaus Center, ulaanbaatar (Mn) · biomasse heizwerk alberschwende gmbh & Cokg (at) · holzwärme altenmarkt gmbh (at) · biomasse heizwerk bezau gmbh & Co (at) · fernwärme bischofshofen (at) · biomasse heizwerk damüls gmbh (at) · bwd biowärme dorfgastein gmbh (at) · biomasse hw, düns/Vorarlberg (at) · biomasse hw, gaschurn (at) · biomasse hw, grödig (at) · hackschnitzel- und heizgenossen-schaft großarl (at) · biowärme imst gmbh (at) · nahwärme kleinarl gmbh (at) · biomasse hw, kuchl (at) · biomasse heiz-werk lech gmbh & Co.kg (at) · biomasse hw, lech/Vorarlberg (at) · biomasse heizkraftwerk lingenau reg. gen.m.b.h, lingenau (at) · hackschnitzel- und heizgenossenschaft, Maria alm (at) · ortswärme Matrei (at) · biomasse heizwerk Mellau Reprinting or reproduction even of excerpts is only permitted with the approval of PEWo Energietechnik GmbH, 02979 Elsterheide, Germany. Errors and technical modifications are reserved. Any performance diagrams, statements and tables only serve to provide better understanding. They do not make authoritative statements concerning our complete or current pro duct programme and therefore provide no basis for planning. PEWO ist Member ofPubl ishEr’s infOrMat iOnPEWO Energietechnik gmbhGeierswalder Straße 13 · 02979 Elsterheidephone +49 3571 4898-0 · fax +49 3571 4898-28email info@pewo.com · www.pewo.comoktober 2010