Heating substations for heat distribution in heating networks and buildings

Transcription

1 Heating substations for heat distribution in networks and buildings consumer units pewotherm house substations pewocompact pewov-max 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 pewolive

2 2 Measuring, 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 stations, 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 continue 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 ExPErtise We ensure high levels of quality in our factory through proven 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 customer plants produced year on year. We think beyond the horizon PEWO is a supplier of self-contained, efficient and comprehensive solutions. Installation and user-friendly systems are guaran teed. Proven standard applications minimize the time and energy required for planning and manufacturing considerably. Successful designs and solutions can be multiplied with little effort, consequently the input required for installations and on-site coordination are significantly reduced.

3 3 Consumer Units pewotherm direct/indirect connection between heater and system (max. 90 C/PN 10) decentralised domestic hot water, flow system (Fresh water system) for Apartments and Iindustry 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.) Find The Right pewotherm district transfer circuits domestic hot water application page domestic hot water power for dt = 20 K number of unmixed circuits number of mixed circuits control principle control power (kw) pewo- Therm Apartments, Semi-attached houses, Passive houses, Low-energy houses V direct direct T direct direct idd indirect direct V 4L direct direct continuous flow principle thermostatic thermostatic/ elektronic thermostatic/ elektronic continuous flow principle continuous flow principle thermostatic continuous flow principle thermostatic thermostatic designed to replace central gas boilers in apartments modular, flexible Separation of systems between district and circuit 4-riser-system for using renewable energy sources, such as solar power and heat pumps

4 4 System Solutions For Efficient Heat Distribution Boiler House produces independent heat extraction heat distribution systems network pump arrangements buffer tank integration systems boiler house control pewocontrol Control- and Communications Technology Geothermal, Heat Pumps Biomass- Power Plant Combined Heat and Power Unit District Heating Stations pewocad Heating Circuit Manifolds pewosplit House Substations pewov-max, pewocompact

5 5 PEWO's commitment complete solutions for efficient heat distribution and domestic hot water support with design, planning and optimum product selection efficient control strategy guidance design management training system maximisation through monitoring after start-up System consultation Pewo offers design and product advice to support the planning of heat distribution systems for local 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. service Consumer Units pewotherm, pewoaqua start-up on site management training educating the (at Pewo or on site) installers on how to activate the 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-up

6 6 Heating Systems in Buildings Complete system for heat distribution and domestic hot water preparation Central Heat Generation Thermal 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 foundations. Pewo's decentralised systems are perfectly suited for integrating green energy fuels with low flow and return temperatures. Heating systems Thermal energy in the form of -circuit water is distributed in the building through a network of pipes. The network usually consists of a flow line and a return line. A circulation line is not required. If the building has low temperature and a central heat pump an advanced 4-conduit network can be utilized to provide the optimal total system. consumer units In 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 highest 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 recorded 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 ( 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 and water compact design, narrow width easy to install low operating and maintenance costs no circulation lines required System consultation piping network calculation network pump recommendation buffer tank dimensioning equipment layout control strategy

7 7 PEWO tfs The Technically Superior Domestic Hot Water Heating System With 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 fluctuations to keep the water at a constant temperature. A minimum number of movable components 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 domestic water is reduced to a minimum. Information Einfach und genial Water Hammer Arrestors in pewo Consumer Stations Overview pewotherm 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 construction pewotherm t page 12 modular consumer unit many different configurations for a variety of uses 2 nd mixed circuit, floor distributor many different cabinets pewotherm idd page 19 integrated indirect circuit suitable for local micro networks pewotherm 4l page 22 heat supply for water and room at different temperature levels with the aid of 4-riser connection technology pewoaqua D page 30 fresh water station for decentralised of domestic hot water using the continuous-flow principle without a circuit The 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 vibrations caused by pressure waves. System Accessories page 26 many accessories available for a variety of purposes completely decentralised supply arrangement with buffer storage charging and network pump systems, controller, and remote reading schemes

8 8 pewotherm V Consumer Units For Central Heating and Decentralised Domestic Hot Water Heating in Dwellings and Consumer Units pewotherm V Depth 170 mm District flow Cold water District inlet return schema Heating water Heating circuit Hot water system Hot water connection Heating, direct Hot water, direct Flow system Cold water application Apartment Industry unit One-family house Semi-attached house for the change from gas fired boiler to decentral supply specially suitable for apartments plate heat exchanger for domestic hot water Heat meter (for and domestic hot water) Strainer Cold water meter (for cold and domestic hot water) TFS-Controller for Domestic hot water Differential pressure controller Water hammer arrestor Valve for space optionally with room temperature controller 720 mm types pewotherm V 25, 25 kw Code WS1021 pewotherm V 35, 35 kw Code WS1022 pewotherm V 50, 50 kw Code WS1023 Space flow Domestic hot water 436 mm Cold water outlet Space return pewotherm V is a substation with an integrated circuit and domestic hot water preparation following 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 return temperatures. The circuit is supplied directly from the district system and a thermostatic valve is integrated into the circuit return. The heater can be turned off with an optional valve gear and a room temperature controller with a weekly program. This device is especially well suited as a replacement for gas boilers. The connections for the district 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.

9 9 Device Description: Basic module galvanised base plate stainless steel piping, flat sealing brass fittings and joints, flat sealing Primary 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 meter Heating circuit ball valve in flow/return, dn 20, Rp 3/4" thermostatic valve, base part with throttle setting, kvs 1.8 Domestic hot water plate heat exchanger with rigid foam insulation tfs temperature control system, fixed value setting 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 pewothermv. 11 differential pressure controller 24 straight-way valve 27 air bleed 31 air bleed 33 Volume meter 40 ball valve 43 water impact absorber 48 Plate heat exchanger 59 strainer 88 Volumetric current limiter 96 heat meter 105 regulator for tfs Thermo-Fluid-System

10 10 Technical Data and Dimensions Technical data pewotherm V 25 V 35 V 50 Primary side Transfer direct Maximum temperature/ pressure stage 90 C/ PN 10 Power 37 kw 47 kw 56 kw Maximum volumetric current 1050 l/h 1270 l/h 1420 l/h Pressure loss incl. heat meter and differential pressure controller 0.60 bar 0.60 bar 0.70 bar Kvs-value Heating circuit Maximum temperature/ pressure stage 90 C/ PN 10 Power at the temperature difference of 20 K 12 kw 12 kw 12 kw Maximum volumetric current at 0,1 bar differential pressure for the circuit 510 l/h Domestic hot water in Continous flow system Maximum temperature/ pressure stage 90 C/ PN 10 Output at the tap at primary 65/25 C, secondary 10/45 C 10 l/min 14 l/min 18 l/min Pressure loss without flow limiter 0.15 bar with flow limiter 0.95 bar Connections 3/4" outside threat, flat sealing Dimensions/ Weight without housing Dimensions in mm (Width x Height x Depth) 440 x 720 x x 720 x x 720 x 170 Weight 15 kg 19 kg 23 kg 111 mm 63mm 118mm 50mm 27 34mm 720 mm 720 mm (frame 765 mm) 654 mm 720 mm mm mm (frame 485 mm) On-wall cover In-wall cover 30mm 51,5 63mm 74mm 63mm 121,5 mm

11 11 Optional Extras Optional extras Options an0001 Thermal actuator 230 V rtr003 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) Valves ddr001 Differential pressure regulator up to 1 m 3 /h ddr002 Differential pressure regulator up to 1,5 m 3 /h Housings ws1075 On-wall cover, short version ws1078 In-wall cover, short version pewocode: ddr001 up to 1 m 3 /h pewocode: ddr002 up to 1,5 m 3 /h Differential pressure regulator* Differential pressure controller for stabilising the differential pressure in the consumer 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 > I/h Installation Assistance Upon 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. pewocode: 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 mm pewocode: an0001* Thermal actuator 230 Vac pewocode: rtr003* pewocode: rtr004* pewocode: rtr005* pewocode: rtr006* Room themperature controller *additional information can be found under System Accessories on page 30.

12 12 pewotherm T Consumer Units For Central Heating and Decentralised Domestic Hot Water Heating in Apartment Houses und Industry Units Depth 180 mm 630 mm pewotherm T plate heat exchanger for domestic hot water schema Heating circuit Hot water system tfs temperature control system for domestic hot water Heating water Hot water Cold water Strainer Differential pressure controller connection Heating, direct Hot water, direct Flow system Water hammer arrestor 800 mm application Apartment Industry unit One-family house Semi-attached house Industry building types pewotherm T 25, 25 kw Code WS1051 pewotherm T 35, 35 kw Code WS1052 pewotherm T 50, 50 kw Code WS1053 pewotherm T 55, 54 kw Code WS1054 pewotherm T 56, 60 kw Code WS1055 Valve for space optionally with room temperature controller pewotherm T, Basic module without optional extras Cold water inlet Cold water outlet Domestic hot water circulation District flow Domestic hot water (behind) 2. Space return (in front) District return Space flow (behind) 2. Space flow (in front) Space return pewotherm T is a heat substation with up to two integrated circuits and domestic hot water preparation 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 return temperatures. A cold water outlet and circulation are optional extras. The circuit is supplied directly from the system and a thermostatic valve is integrated into the circuit return. The heater can be turned off with an optional valve gear and a room temperature controller with a weekly program. A second mixed circuit for adjusting the flow temperature and also a circuit manifold for floor can be integrated into the device as an optional extra.

13 13 Device Description: Basic module galvanised base plate stainless steel piping, flat sealing brass fittings and joints, flat sealing Primary side strainer adapter for differential pressure controller adapter for heat meter, 110 mm, dn 20, Rp 3/4" sensor pocket for heat meter Heating circuit 1 thermostatic valve, base part with throttle setting, kvs 1.8 Domestic hot water plate heat exchanger with rigid foam insulation tfs temperature control system, fixed value setting C water hammer arrestor in the domestic hot water circuit flow controller in the cold water circuit Modular System This station is available with a number of options. The terminal bus can be delivered up front. The Piping and Instrumentation Diagram shows the Basic module of Consumer unit pewothermt with all kinds of possible options (pictured in gray) way valve 24 straight-way valve 27 air bleed 31 fill and drain valve 43 water impact absorber 48 Plate heat exchanger 59 strainer 88 Volumetric current limiter 96 adaptor for heat meter Options: 11 differential pressure controller 33 Volume meter 40 ball valve 57 Check valve 72 actuator 86 Circulation pump 96 heat meter

14 14 Technical Data and Dimensions Technical data pewotherm T 25 T 35 T 50 T 55 T 56 Primary side Transfer direct Maximum temperature/ pressure stage 90 C/ PN 10 Power 25 kw 35 kw 50 kw 54 kw 60 kw Maximum volumetric current 540 l/h 760 l/h 1080 l/h 1150 l/h 1300 l/h Pressure loss incl. heat meter and differential pressure controller 0.45 bar 0.53 bar 0.45 bar 0.50 bar 0.60 bar Kvs-value Heating circuit Maximum temperature/ pressure stage 90 C/ PN 10 Power at the temperature difference of 20 K 12 kw 12 kw 12 kw 12 kw 12 kw Maximum volumetric current at 0,1 bar differential pressure for the circuit 510 l/h Domestic hot water in Continous flow system Maximum temperature/ pressure stage 90 C/ PN 10 Output 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/min Pressure loss without flow limiter 0.15 bar 0.15 bar 0.18 bar 0.18 bar 0.25 bar with flow limiter 0.95 bar 0.95 bar 0.98 bar 0.95 bar Connections 3/4" outside threat, flat sealing Dimensions/ Weight without housing Dimensions in mm (Width x Height x Depth) 630 x 833 x 180 Weight 20 kg 22 kg 23 kg 25 kg 27 kg Dimensions for On- and In-wall cover, short and long version for pewotherm T. 630 mm 380mm mm (short version: 850 mm) 1400 mm (short version: 850 mm) 776 mm 144mm 170mm mm mm 56,5 62mm 65mm 65mm 65mm 65mm 65mm 65mm 95,5mm 42 56,5 120,5mm

15 15 Optional extras Options Wärmedämmung wd0003 Heat insulation for plumbing System Accessories an0001 Thermal actuator, 230 V rtr003 Room temperature controller, weekly program, battery rtr004 Room temperature controller, weekly program, 230 V rtr005 Room temperature controller, daily program, battery rtr006 Room temperature controller, daily program, 230 V ws1119 Connecting block and pump logic ddc902 digital circuit controller with flow temperature sensor atf0001 Outside temperature sensor rtf0001 Room temperature sensor fas0001 Remote meter reading system up to 25 meters fas0002 Remote meter reading system up to 60 meters fas0003 Remote meter reading system from 60 meters (on request) Valves ddr001 Differential pressure controller up to 1 m 3 /h ddr002 Differential pressure controller up to 1.5 m 3 /h ws1110 Return temperature limiter ws1111 Set of emptying and air bleeding Pumps ws1117 ws1103 ws1115 ws1116 PH nd direct space circuit Circulation-set Heating circuit with thermostatic mixed module Heating circuit with elektric mixed module High efficiency pump Options Zähler ws1100 Domestic cold water outlet and adapter for cold water meter ws1101 Adapter for cold water meter WZ0002 Heat meter Qn 1.5 WZ0004 Heat meter Qn 1.5, M-Bus WZ0010 Cold water meter Qn 1.5 WZ0012 Cold water meter Qn 1.5, M-Bus Housings ws1075 On-wall cover, short version ws1076 On-wall cover, long version ws1077 Floor fill shield, floor ws1078 In-wall cover, short version ws1079 In-wall cover, long version ws1080 Floor fill shield, long version, floor Floor distributor with shut-off valves ws1120 Floor distributor 2 x with 6 shut-off valves ws1121 Floor distributor 3 x with 6 shut-off valves ws1122 Floor distributor 4 x with 6 shut-off valves ws1123 Floor distributor 5 x with 6 shut-off valves ws1124 Floor distributor 6 x with 6 shut-off valves ws1125 Floor distributor 7 x with 6 shut-off valves ws1126 Floor distributor 8 x with 6 shut-off valves ws1127 Floor distributor 9 x with 6 shut-off valves ws1128 Floor distributor 10 x with 6 shut-off valves Mounting Bars ws1070 Mounting Bar with 6 Valves ws1071 Mounting Bar with 7 Valves ws1072 Mounting Bar with 8 Valves Connections Cold water outlet Domestic hot water District flow District return 1. Space flow 1. Space return Cold water inlet Domestic hot water circulation 2. Space return 2. Space flow

16 16 pewocode: ws1110 Return temperature limiter* in the circuit When installed in the consumer unit's return, the temperature limiter keeps the return temperature of the circuit at a preset level. If the return temperature goes up, the valve closes, reducing the flow rate in the circuit. If the return temperature goes down, the valve opens and the flow rate increases. pewocode: ddr001 up to 1 m 3 /h pewocode: ddr002 up to 1,5 m 3 /h Differential pressure controller* Differential pressure controller for stabilising the differential pressure in the consumer 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 > I/h pewocode: ws1100 Adapter 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 residence pewocode: ws nd direct space circuit* Connection for an additional direct space circuit, with shutoff and zone valve for regulating the circuit optional installation of an actuator pewocode: ws1101 Adapter 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 station *Optional extras are completely factory mounted in the consumer unit and for leaks tested on.

17 17 pewocode: ws1116 Heating 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 monitor for switching off the circulation pump if the temperature is exceeded pewocode: ws1111 Set 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 extra pewocode: ws1103 Circulating set* for supplying distant taps, consisting of: type Z15 circulating pump, analogue time switch, check valve timer included safety valve pewocode: ws1115 Heating 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 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. pewocode: ph0005 High efficiency pump available as an option combined with the electric or thermostatic mixer module *Optional extras are completely factory mounted in the consumer unit and for leaks tested on.

18 18 pewocode: ws1120 bis ws1128 Floor distributor with shut-off valves on additional base plate 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 circuit manifold dn 32 for floor 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 outflow pewocode: ws1070 bis ws1072 Mounting Bar with Valves mounting bar with 6 to 8 valves per consumer unit, depending 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 dust pewocode: ws1075, short version pewocode: ws1076, long version On-wall cover Dimension (Width x Height x Depth) short version 635 x 850 x 210 mm long version 635 x 1400 x 210 mm pewocode: ws1078, short version pewocode: 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-mounted unit frame and fitted door with casing, powdercoated in white (similar to ral 9010) lockable fitted door air inlets/vents to prevent heat buildup Floor fill shield synthetic door available upon request pewocode: ws1077, for On-wall cover pewocode: ws1080, for In-wall cover Floor fill shield for the long version of On- and In-wall cover pewocode: wd0003 Heat insulation for plumbing insulation of base module and mixed circuit outflow insulation in the second circuit optional insulation of the circulation circuit

19 19 pewotherm IDD Consumer Unit With Indirect Heating and Ddecentral Domestic Hot Water Heating in Apartment Houses and Industry Units pewotherm idd District return District flow Cold water inlet schema Heating circuit Heating water Hot water system Hot water Cold water connection Heating, indirect Hot water, direct Flow system application Apartment Industry unit One-family house Semi-attached house Separation of systems between district and circuit types pewotherm IDD 35, 35 kw Code WS 1010 pewotherm IDD 50, 55 kw Code WS 1011 pewotherm idd encased in a Pst-sandwich frame Heat meter (for and domestic hot water) Differential pressure controller Circulation pump Strainer plate heat exchanger for and domestic hot water TFS temperature control system for, indirect circuit tfs temperature control system for domestic hot water 680 mm Space flow 520 mm Space return Domestic hot water pewotherm idd is a substation with an indirect circuit and domestic hot water preparation, following the hygienic continuous-flow principle and using a plate heat exchanger. The tfs controller keeps the water temperature constant. The high thermal length of the plate heat exchanger guarantees high end output at low return temperatures. A plate heat exchanger separates the circuit from the system. The circuit is supplied by an integrated circulating pump. An optional expansion vessel for the circuit can be added on the left-hand side of the system. The flow temperature of the circuit can be operated by a thermostatic tfs controller (fixed value) or by an electronic controller, determined by atmospheric conditions. pewotherm idd is integrated in a Psthousing and is optimally suited for apartments in large buildings and for micro systems.

20 20 Device 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 sealing Domestic hot water Stainless steel plate heat exchanger tfs temperature control system, fixed value setting C water hammer arrestor in the domestic hot water circuit flow controller in the cold water circuit Primary 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 meter Heating circuit 1 Stainless steel plate heat exchanger for separation of systems tfs temperature control system, fixed value setting C Circulation pump for circuit supply ball valve in flow/return, dn 20, Rp 3/4" Optional extras Differential pressure controller, mounted on-site room temperature controller, choice of mains-operated or battery operated electric circuit module radio module for heat meter remote meter reading system 12 l expansion vessel with connection District return District flow cold water The Piping and Instrumentation Diagram shows the Consumer unit pewothermidd with all kinds of possible options (pictured in gray). Adapter 5 Connection pressure 24 straight-way valve 27 air bleed 31 fill and drain valve 40 ball valve 42 Manometer 45 safety valve 48 Plate heat exchanger 59 strainer 75 temperature sensor 86 Circulation pump 88 Volumetric current limiter 105 tfs-controller Space flow Space return DDC room controller domestic hot water Options 7 ddc-controller 11 differential pressure controller 96 heat meter 43 expansion vessel

21 21 Technical data pewotherm idd 35 idd 50 Primary side Transfer indirect Maximum temperature/ pressure stage 90 C/ PN 16 Power 47 kw 56 kw Maximum volumetric current 1300 l/h 1420 l/h Pressure loss incl. heat meter and differential pressure controller 0.70 bar 0.70 bar Kvs-value Heating circuit Maximum temperature/ pressure stage 90 C/ PN 10 Power 12 kw 12 kw Primary side Temperature 70/ 50 C volumetric current 518 m 2 /h Secundary side Temperature 60/ 40 C volumetric current 518 m 2 /h Domestic hot water in Continous flow system Maximum temperature/ pressure stage 90 C/ PN 10 Output at the tap at primary 65/25 C, secondary 10/45 C 14 l/min 18 l/min Pressure loss without flow limiter 0.15 bar with flow limiter 0.95 bar Connections 3/4" outside threat, flat sealing Dimensions/ Weight without housing Dimensions in mm (Width x Height x Depth) 680 x 520 x 240 Weight 26 kg 29 kg mm mm 157,5 mm 127,5 mm 184,5 mm PST Pewo Sandwich Technology A cornerstone in the development of a new generation of systems Superior heat insulation Plumbing and components are housed three- dimensionally in a noncorrosive, sandwich-style cabinet made of closed-cell polyurethane foam. 671 mm Compact design This 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. 144 mm 62 mm 63 mm 81 mm 159,5 mm Pst is also extremely easy to service. All components are accessible once the front part of the cabinet has 509,5 mm been removed.

22 22 pewotherm 4L Consumer Unit 4-Riser-System for Heating and Domestic Hot Water pewotherm 4L District flow ht 600 mm Cold water inlet District return ht District return nt District flow nt schema Heating circuit Heating water HT Heating water NT Hot water system Hot water Cold water Heizkreis plate heat exchanger for domestic hot water Strainer Tiefe 165 mm connection Heating, direct Hot water, direct Flow system application Apartment Industry unit One-family house Semi-attached house for using floor systems and renewable heat generators Adapter for cold water meter tfs temperature control system for domestic hot water Differential pressure controller Water hammer arrestor Adaptor for heat meter Domestic hot water or types pewotherm 4L, 35 kw pewotherm 4L is a 4-riser Code WS1150 consumer unit with integrated pewotherm 4L, 50 kw circuit and domestic Code WS1151 pewotherm 4L, 55 kw hot water preparation, following the hygienic continu- Code WS1152 pewotherm 4L, 56 kw ous-flow principle and using Code WS1153 a plate heat exchanger. The tfs controller keeps the water 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 different temperature levels. Domestic hot water and each have a separate flow and return. Hot water (> 45 ºC) and (graduated) can be supplied by different heat generators. Renewable heat generators, such as solar heat or heat pumps, as well as condensing boiler technologies require low Space flow Domestic hot water Cold water outlet Space return Space return Space flow flow and return temperatures for efficient operation. Heatingcircuit water with a high flow temperature is only made available for the preparation of domestic hot water. The system is provided with -circuit water at a lower temperature level. The circuit is supplied directly from the low temperature flow. A thermostatic valve is integrated into the 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 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. 660 mm

23 23 Device Description: Basic module galvanised base plate stainless steel piping, flat sealing brass fittings and joints, flat sealing Primary 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 meter Heating circuit nt ball valve in flow/return, dn 20, Rp 3/4" Domestic hot water Plate heat exchanger with in a heat-insulating polyurethane foam tfs temperature control system, fixed value setting 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" Primary 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 meter The Piping and Instrumentation Diagram shows the Consumer unit pewotherm 4L. 11 differential pressure controller 24 straight-way valve 27 air bleed 31 air bleed 33 Volume meter 40 ball valve 43 water impact absorber 48 Plate heat exchanger 59 strainer 88 Volumetric current limiter 96 heat meter 105 regulator for tfs Thermo- Fluid-System Heating network ht (High temperature) e.g. for domestic hot water with flow temperature of 55 C Heating network nt (Low temperature) e.g. for space or underfloor with flow temperature of 35 C

24 24 Technical data pewotherm 4L 35 4L 50 4L 55 4L 56 Primary side Transfer direct Maximum temperature/ pressure stage 90 C/ PN 10 Power 26 kw 37 kw 40 kw 45 kw Maximum volumetric current 760 l/h 1080 l/h 1150 l/h 1300 l/h Pressure loss incl. heat meter and differential pressure controller 0.53 bar 0.45 bar 0.50 bar 0.60 bar Kvs-value Heating circuit Maximum temperature/ pressure stage 90 C/ PN 10 Power 12 kw 12 kw 12 kw 12 kw Maximum volumetric current at 0,1 bar differential pressure for circuit 510 l/min at the temperature difference of 20 K Domestic hot water in Continous flow system Maximum temperature/ pressure stage 90 C/ PN 10 Output at the tap at primary 55/25 C, secondary 10/45 C 11 l/min 15 l/min 16 l/min 18 l/min Pressure loss without flow limiter 0.15 bar 0.18 bar 0.18 bar 0.18 bar with flow limiter 0.95 bar 0.98 bar 0.95 bar 0.95 bar Connections 3/4" outside threat, flat sealing Dimensions/ Weight without housing Dimensions in mm (Width x Height x Depth) 630 x 833 x 180 Weight 29 kg 31 kg 33 kg 35 kg

25 25 Performance Charts For Consumer Units pewotherm V, pewotherm T und pewotherm 4L District flow rate [l/h] pewotherm V25 and T25 Output domestic hot water, 10 C / 45 C 55 C 55 C Domestic hot water tap load [l/min] 60 C 60 C 65 C 65 C 70 C 70 C Flow temperature district District return temperature [ C] District flow rate [l/h] pewotherm V25 and T25 Output domestic hot water, 10 C / 50 C C 60 C 60 C 70 C 65 C Domestic hot water tap load [l/min] 70 C Flow temperature district District return temperature [ C] District flow rate [l/h] pewotherm V35, T35, 4L 35 Output domestic hot water, 10 C / 45 C C 65 C 50 C 55 C 60 C C C Flow temperature district Domestic hot water tap load [l/min] 60 C 65 C 70 C District return temperature [ C] District flow rate [l/h] pewotherm V35, T35, 4L 35 Output domestic hot water, 10 C / 50 C C 55 C 60 C 65 C 70 C C Flow temperature district Domestic hot water tap load [l/min] 65 C 70 C District return temperature [ C] District flow rate [l/h] pewotherm V50, T50, 4L 50 Output domestic hot water, 10 C / 45 C 50 C 50 C 55 C 55 C 70 C Flow temperature district Domestic hot water tap load [l/min] 60 C 60 C 65 C 65 C 70 C District return temperature [ C] District flow rate [l/h] pewotherm V50, T50, 4L 50 Output domestic hot water, 10 C / 50 C 55 C 55 C 60 C 60 C 65 C 65 C Domestic hot water tap load [l/min] 70 C 70 C Flow temperature district District return temperature [ C]

26 26 System Accessories pewocode: an0001 Actuator 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 mm pewocode: 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 operation Room temperature controller *with battery ** 230 VAC pewocode: atf0001 Outside temperature sensor Outside temperature sendor for measuring outdoor temperature pewocode: rtf0001 Room temperature sensor Room temperature sensor for measuring room temperature in dry rooms suitable for all systems pewocode: rtr005* pewocode: rtr006** Room temperature controller with day timer normal operation or energy-saving operation automatic switching between operating modes optional pewocode: ws1119 Connecting block and pump logic Controller manifold for the connection of six room thermostats with a maximum of 12 actuators 230 V with integrated pump logic pewocode: ddc902 Controller for weather- or room-controlled flow temperature regulation digital circuit controller for regulating room and flow temperature 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 sensor

27 27 pewocode: lanrdd10 pewosmb Smart Meter Box Wall-mounted control cabinet with communication hub for remote meter reading Electricity Heat meter housing unit 1 The pewosmartmeterbox (pewosmb) is a communication- Water pewotherm ready central unit that provides consumption data for each individual 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- Electricity Water Heat meter pewotherm housing unit 2 nicates with the meters located in the apartments and in the energy centre. Consumption data is collected, processed, stored and sent. Electricity Heat meter housing unit n With this solution Pewo offers an infrastructure for the provision of consumption data to measurement service providers. Water pewotherm MBus The data can be made available to the measurement service, daily, weekly, monthly or on a certain target date. Different Heizzentrale data formats, including Excel, CSV, XML and SQL, are available. Heat Individual interfaces can be provided based upon customer requirements. This guarantees safe data processing for account- Gas ing and erp systems. The box a wall-mounted control cabinet Water is installed in the energy centre and contains all necessary hardware components. The hardware is configured separately for each building. Electricity pewosmb Smart Meter Box Internet Network Types pewosmb 25, up to 25 meters pewosmb 60, up to 60 meters pewosmb 100, up to 100 meters pewosmb 150, up to 150 meters Interfaces MBus (short-circuitproof, DIN EN /3 and EN1434-3) for reading of meters ethernet for sending meter data over the network/internet RS232 optional internet connection (DSL, cable) Power supply 230 VAC Services data formats: XML, Excel, CSV, SQL data access: automatic message transmission by , pewolive web portal with database connection Application Centralised remote reading of heater, cold water, gas and electricity meters and web-based provision of data

28 28 pewocode: ws1140 Differential pressure regulator set The differential pressure regulator in the apartment substation 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 setting corresponds to the pressure loss in the apartment substation plus the pressure loss of heat meter and piping. pewocollect Buffer tank, steel psf By using a buffer tank the heat generator can be configured to the room system. The buffer tank stores thermal energy in the form of -circuit water to cover peaks in demand during domestic hot water. The efficiency of boiler plants is increased due to longer boiler runtimes, leading to reduced pollution. Buffer tank psf steel Height incl. connections Tilted height Diameter without/ with lagging Connections (inside thread) Maintenance aperture (fl) Tare weight Type Code mm mm mm ww/kw VL/rl AD/id mm kg 500 l SP x 1 1/2" 4 x 1/2" 240/ l SP x 1 1/2" 4 x 1/2" 240/ l SP x 1 1/2" 4 x 1/2" 240/ l SP x 1 1/2" 4 x 1/2" 240/ l SP x 1 1/2" 4 x 1/2" 240/ l SP on request x 1 1/2" 4 x 1/2" 240/178 on request 5000 l SP auf Anfrage x 1 1/2" 4 x 1/2" 240/178 auf Anfrage ad External diameter, id Internal diameter pewocontrol L1/2 buffer tank charge control charge control for buffer tanks by means of a boiler/ boiler cascade controller for system in combination with pewotherm consumer units L1 control for one boiler/ L2 cascade control for two boilers. The device controls all boiler request functions and optimises 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 expired. 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 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 increasing 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 operated with this device. pewocontrol L3 buffer tank charge control charge control for buffer tanks via network or primary pressure manifold controller for system in combination with pewotherm consumer units The device controls and regulates all heat generator requests 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-

29 29 ue 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 restricting 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 V analogue signal. The valve must have a 3-point drive for 230 V AC/max. 100 ma. pewocontrol np1 network pump control Temperature-based regulation of controllable electronic pumps (0-10 V) with integrated constant pressure regulation Controller for network pumps in district stations in connection with pewotherm conumer unit The device measures the difference in temperature between a circuit's flow and return lines. The difference between set value and actual value (temperature difference) is used to calculate the constant pressure required for the circuit at that time. If the temperature difference is too small the controller detects an oversupply of the circuit and reduces the output signal for the constant pressure based on the difference. If the temperature difference is too high the controller detects an undersupply of the circuit and increases the output signal for the constant pressure based on the difference. The minimum constant pressure 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 control Network pump control with mixer control, continuous actual value control based on differential pressure or temperature difference Controller for network pumps in district stations in connection with pewotherm consumer unit Continuous 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 V actuator. The control always sets the initial value of the circuit pump to the higher of the two pump performance values calculated in parallel from the pressure or temperature difference. This method facilitates a continuous calculation of the required effective pump performance. Pressure and/or supply must not fall below an adjustable minimum value in order to guarantee the basic supply required by the system at all times. The device measures the pressure difference between the circuit's flow and return lines. The pump capacity required by the circuit is calculated from the difference between set value and actual value (temperature difference). If the temperature difference is too small the controller detects an undersupply of the 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 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.

30 25-70 kw kw kw Qn 1.5 Qn 1.5 Qn 1.5 R R R 30 pewoaqua D Domestic Hot Water Heater Fresh Water Station For Heating Systems with Differential Pressure pewoaqua D pewoaqua D produces domestic hot water using the hygienic continuous-flow system and a plate heat ex- schema changer. The tfs controller keeps domestic hot water Trinkwassererwärmung Heizwasser Warmwasser Kaltwasser at a constant temperature. The high thermal length of the plate heat exchanger guarantees high end output at low return temperatures. connection Hot water direct Flow system for decentralised domestic hot water Design S for 1 4 housing units thermostatic tfs controller without auxiliary energy application Apartment Industry unit One-family house Semi-attached house Industry building pewoaqua D tfs pewoaqua D TSF WMZ 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 meters type pewoaqua D 25, 25 kw Code PA0151 pewoaqua D 35, 35 kw Code PA0152 pewoaqua D 50, 50 kw Code PA0153 pewoaqua D 70, 50 kw Code PA C pewoaqua D TSF pewoaqua D TSF WMZ WMZ 25 C Type Design Heating water primarily 70/25 C domestic hot water 10/60 C Heating water primarily 65/25 C domestic hot water 10/60 C Heating 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 units D 25 tfs S PA0151 D 35 tfs S PA0152 D 50 tfs S PA0153 D 70 tfs S 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 oversizing, 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 kw