Bosch UT-L 1 Technical Manual
  1. Manuals
  2. Brands
  3. Bosch Manuals
  4. Boiler
  5. UT-L 1
  6. Technical manual

Bosch UT-L 1 Technical Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Heating boiler
UNIMAT
UT-L
Technical guide

Advertisement

Table of Contents
loading

Related Manuals for Bosch UT-L 1

Summary of Contents for Bosch UT-L 1

  • Page 1 Heating boiler UNIMAT UT-L Technical guide...

  • Page 2: Table Of Contents

    2 | Table of contents Matched pressure-jet burners ..32 Table of contents Combustion details for the UNIMAT UT-L boilers ......33 Oil/gas special boilers .
  • Page 3 Table of contents | 3 9.3.1 Boiler circuit pump in the bypass as shunt 10.5 Additional devices for sound insulation . . 77 pump ......53 10.5.1 Requirements .

  • Page 4: Oil/Gas Special Boilers

    EN 303. They are constructed with heating stations and commercial operations. reference to the guidelines of the relevant TRD 300. Bosch offers these boilers in the output range from Features and benefits 650 kW to 19200 kW. • 3-pass design...

  • Page 5: Basic Principles

    Basic principles | 5 surfaces. It means the heating surfaces can be viewed • The dramatic reduction of the flue gas temperatures from the water chamber. in a condensing boiler or boiler with condensing heat exchanger down to 30 °C makes use of the sensible •...

  • Page 6: Making Optimal Use Of Condensing Technology

    6 | Basic principles Making optimal use of condensing Heating system 75/60 °C technology Even with a design temperature of 75/60 °C, it is possible to make above average utilisation of the 2.2.1 Matching to the heating system condensation heat for around 95 % of the annual heat Condensing boilers or boilers with condensing heat load.

  • Page 7: High Standard Seasonal Efficiency [To Din]

    Basic principles | 7 2.2.2 High standard seasonal efficiency [to DIN] Economic viability considerations The graphs in Fig. 4 and Fig. 5 show that the varying 2.3.1 Simplified comparison of conventional boilers proportion of condensation heat utilisation has a direct and condensing boilers or boilers with influence on the energy utilisation of the condensing condensing heat exchangers...

  • Page 8: Technical Description

    8 | Technical description Investment costs Technical description Scope of Unit UNIMAT UT-L UNIMAT UT- investment boiler with a L boiler with UNIMAT UT-L boiler rated output condensing heat 3.1.1 Equipment overview 2000 kW exchanger The UNIMAT UT-L boilers are oil/gas special boilers for with a rated positive pressure combustion to EN 303.

  • Page 9: Function Principle

    Technical description | 9 3.1.2 Function principle The flow through the boiler results in condensation-free and safe heating operation with a minimum return Boiler technology temperature as low as 50 °C. All UNIMAT UT-L boilers boilers have a water guide The boiler is built using the 3-pass design and the element installed below the return connector.

  • Page 10: Unimat Ut-L Boiler

    10 | Technical description UNIMAT UT-L boiler can choose between a galvanised steel version of the heat exchanger bundle (ECO 7; without the use of 3.2.1 Version overview condensing technology) and a version of the heat exchanger bundle in stainless steel (ECO 6; with the use The conventional UNIMAT UT-L boiler can be fitted with of condensing technology).

  • Page 11: Function Principle

    Technical description | 11 3.2.2 Function principle In the flue gas heat exchanger, heat is recovered from the hotter boiler flue gas by channelling cooler mains return water through the heat exchanger pipe to reduce the flue gas temperature. The energy gained in this way gives a higher boiler efficiency and therefore lower fuel consumption and lower flue gas emissions.

  • Page 12: Dimensions And Specification For The Flue Gas Heat Exchangers

    Flue gas UT-L boiler Output limit Dimension(s) connection Base frame Channel section Type [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] UT-L 1 3135 2295 2040 1174 2152 1540 1460 1055 1750 1055 UT-L 2 3516...
  • Page 13 Technical description | 13 UNIMAT Flue gas UT-L boiler Output limit Dimension(s) connection Base frame Channel section Type [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] UT-L 36 5250 6655 5320 5000 2274 3357 2655 2560 1850 4480 1520...

  • Page 14: Integrated Heat Exchanger Without Condensing Technology - Eco 7

    14 | Technical description 3.3.2 Integrated heat exchanger without condensing technology — ECO 7 W32.000 W32.510 W32.509 W32.008 D03.000 6 720 803 977-10.1itl Fig. 9 Integrated heat exchanger without condensing technology — ECO 7 W32.000 Flue gas heat exchanger If the heat exchanger is designed to have several W32.510 Connection for water outlet bundle elements, the dimensions increase by W32.008 Inspection aperture on the flue gas side...
  • Page 15 Technical description | 15 UNIMAT UT-L UT-L 1 UT-L 2 UT-L 4 UT-L 6 UT-L 8 UT-L 10 UT-L 12 UT-L 14 UT-L 16 UT-L 18 UT-L 20 H1 [mm] 1060 1060 1050 1150 1050 1205 1150 1215 1205 1240...

  • Page 16: Integrated Heat Exchanger With Condensing Technology - Eco6

    16 | Technical description 3.3.3 Integrated heat exchanger with condensing technology — ECO6 W32.000 W32.510 W32.509 W32.008 D03.000 W32.507 6 720 803 977-12.1itl Fig. 10 Integrated heat exchanger with condensing technology — ECO 6 D03.000 Flue gas connecting branch If the heat exchanger is designed to have several W32.000 Flue gas heat exchanger bundle elements, the dimensions increase by W32.008 Inspection aperture on the flue gas side...
  • Page 17 • Dimensions given with ± 1 % tolerance; weights given • These dimensions are designed for 100-mm thick with ± 3 % tolerance. insulation. • Pipe thread to DIN 2999. UNIMAT UT-L UT-L 1 UT-L 2 UT-L 4 UT-L 6 UT-L 8 UT-L 10...

  • Page 18: Stand-Alone Flue Gas Heat Exchanger Without Condensing Technology - Eco 7

    18 | Technical description 3.3.4 Stand-alone flue gas heat exchanger without condensing technology — ECO 7 0-90° 0-90° W32.000 W32.510 W32.541 W32.540 W32.509 W32.506 W32.002 W32.008 6 720 803 977-13.1itl Fig. 11 Stand-alone flue gas heat exchanger without condensing technology – ECO 7 W32.000 Flue gas heat exchanger If the heat exchanger is designed to have several W32.002 Optional flue gas control valve...
  • Page 19 Technical description | 19 Heat exchanger Measurements without with without with without with without with bypass bypass bypass bypass bypass bypass bypass bypass ECO 7 [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] 1000 / 672 1520 1840 1419...

  • Page 20: Stand-Alone Flue Gas Heat Exchanger With Condensing Technology - Eco 6

    20 | Technical description 3.3.5 Stand-alone flue gas heat exchanger with condensing technology — ECO 6 0-90° 0-90° W32.000 W32.510 W32.541 W32.540 W32.509 W32.507 W32.506 W32.002 W32.008 6 720 803 977-14.1itl Fig. 12 Stand-alone flue gas heat exchanger with condensing technology – ECO 6 W32.000 Flue gas heat exchanger •...
  • Page 21 Technical description | 21 Heat exchanger Measurements without with without with without with without with bypass bypass bypass bypass bypass bypass bypass bypass ECO 6 [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] 1110 / 760 1520 1885 1514...

  • Page 22: Connections

    22 | Technical description Connections 3.4.1 Flow and return At design spread and rated output Suggested internal diameter ΔT = 15 K ΔT = 20 K ΔT = 30 K ΔT = 40 K [kW] [kW] [kW] [kW] > 175 ≤ 275 >...

  • Page 23: Connector

    Technical description | 23 3.4.3 Connector A temperature sensor and temperature control unit can be connected to them. All UNIMAT UT-L boilers boilers are factory-fitted with suitable flow and return connectors. 6 720 642 347-13.1il Fig. 13 Connectors for UNIMAT UT-L boilers with test points for safety equipment (dimensions in mm; internal ...

  • Page 24: Characteristics

    24 | Technical description Characteristics 3.5.1 Pressure loss on the water side The pressure loss on the water side is the pressure differential between the boiler flow and return connections. It depends on the boiler size (and the internal diameter of the connectors) and the flow rate. The graph in Fig.

  • Page 25: Pressure Loss On The Hot Gas Side

    Technical description | 25 3.5.2 Pressure loss on the hot gas side UNIMAT UT-L boiler 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 [kW] 6 720 803 977-02.1ITL Fig. 15 Pressure loss on the hot gas side — overview 1 2000 4000 6000...
  • Page 26 26 | Technical description UNIMAT UT-L boiler with condensing heat exchanger 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 6 720 803 977-04.1ITL Fig. 17 Pressure loss on the hot gas side — overview 1 2000 4000 6000 8000 10000 12000...

  • Page 27: Combustion Chamber Volume Load

    Technical description | 27 3.5.3 Combustion chamber volume load To guarantee emissions values, some burner manufacturers define aspects such as a maximum combustion chamber volume load. Using the graphs in Fig. 19 and Fig. 20, the most suitable boiler size for a given combustion chamber volume load can be selected for the UNIMAT UT-L boilers.

  • Page 28: Boiler Efficiency, Standard Seasonal Efficiency [To Din] And Standby Loss

    28 | Technical description FVB [MW/m 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 [kW] 6 720 803 977-07.1ITL Fig. 20 Combustion chamber volume load for UNIMAT UT-L boiler, subject to the boiler output — overview 2 FVB Combustion chamber volume load Rated heating output η...
  • Page 29 Boiler size output efficiency [to DIN] of the boiler through radiation and convection during the 1)2) 1) 2) η η [kw] standby time (burner idle time). UT-L 1 92.2 94.9 UT-L 2 92.4 95.2 Max. UT-L 4 1000 91.8 94.9...

  • Page 30: Flue Gas Temperature

    30 | Technical description 3.5.5 Flue gas temperature Average boiler water Change in the flue gas The flue gas temperature is the temperature measured temperature temperature inside the flue pipe, specifically at the boiler flue outlet. [ °C] It depends on the boiler load and the system –7.5 temperature (...
  • Page 31 Technical description | 31 UNIMAT UT-L boiler with condensing heat exchanger 91,1 91,5 92,0 92,4 92,9 93,3 93,7 94,1 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 [kW] 6 720 803 977-09.1ITL Fig. 22 Flue gas temperatures for UNIMAT UT-L boilers subject to the boiler load — overview 2 η...

  • Page 32: Burner

    32 | Burner Burner General requirements The UNIMAT UT-L boilers can be operated with any tested pressure-jet oil or gas burner. The pressure-jet oil burners must be type-tested in accordance with the requirements of DIN-EN 267; the pressure-jet gas burners in accordance with DIN-EN 676. Observe the requirements for oil and gas combustion equipment, as well as the applicable guidelines and regulations.

  • Page 33: Combustion Details For The Unimat Ut-L Boilers

    Burner | 33 Combustion details for the UNIMAT UT-L boilers D05.005 D04.000 D04.005 D02.000 D02.002 D02.003 6 720 803 977-15.1itl Fig. 24 Combustion chamber dimensions D02.000 Flue D04.000 Front reversing chamber (door) (left door D02.002 Flue tube bundle for 2nd pass hinge) D02.003 Flue tube bundle for 3rd pass D04.005 Reversing chamber screw fitting...
  • Page 34 34 | Burner UNIMAT Output limit Combustion chamber dimension(s) Heating boiler Bare tube Corrugated pipe Max. permitted Max. permitted operating operating UT-L pressure pressure D 2 / D 1 Type [mm] [mm] [bar] [mm] [bar] [mm] UT-L 9300 4911 4500 1260 UT-L 10000...

  • Page 35: Regulations And Operating Conditions

    COMMISSIONING We recommend having the commissioning carried out by a system specialist (boiler, burner, control and hydraulics), e.g. the Bosch industrial service. Emissions regulations Observe country-specific emissions regulations. UNIMAT 6 720 807 794 (2013/04)

  • Page 36: German Immissions Act (Bimschg)

    36 | Regulations and operating conditions German Immissions Act (BImSchG) 5.2.1 Table extracted from the 1st BImSchV “Small and medium-sized combustion systems” Combustion equipment is to be operated in such a way that the limits specified in the 1st BImSchV and the TA Luft are not exceeded.

  • Page 37: Information On Flue Gas Tests Pursuant To Bimschv/Ta Luft

    This procedure should enable any necessary action to be taken with regard to the combustion equipment in order to adhere to the specified emissions levels. A Bosch customer service engineer can be requested to perform these advance tests; based on the test results, this engineer will also be able to make suggestions on how to adhere to the legal levels.

  • Page 38: Operating Requirements

    38 | Regulations and operating conditions Operating requirements These operating conditions are ensured through an appropriate hydraulic circuit and boiler circuit control (hydraulic connection  page 48). The operating conditions given in table 22 are part of the warranty conditions for the Operating conditions for special applications are UNIMAT UT-L boilers.

  • Page 39: Corrosion Protection If System Out Of Use For Long Periods

    Chemical additives that are not certified as protective measures should be taken whenever a boiler harmless by the manufacturer must not be has been idle for longer than three days. Bosch used. recommends the following options: 1. Preservation on the water side through pressure...
  • Page 40 40 | Regulations and operating conditions requirements are not maintained, water treatment is For the UNIMAT UT-L boilers, adhere to the necessary. requirements of the latest VdTÜV Directive In systems with a total boiler output of above 100 kW, (VdTÜV 1466). the volume of fill and top-up water should be measured.

  • Page 41: Minimum Requirements Of Water Analyses For Designing A Water Treatment System

    Regulations and operating conditions | 41 5.3.6 Minimum requirements of water analyses for system, a full analysis corresponding to section 2.2 is designing a water treatment system required no later than when the order is placed. When enquiring about water treatment, as a minimum If a detailed water analysis with the specified the information in sections 1 and 2.1 should be parameters is available, the form does not need to be...

  • Page 42: Sound Pressure Level From Noise In The Boiler System

    42 | Sound pressure level from noise in the boiler system Noise at the chimney outlet Sound pressure level from noise in A significant proportion of the noise development in the the boiler system combustion chamber is transmitted along the flue system to the chimney.

  • Page 43: Boiler Control And Control System

    • BCO boiler control incl. control panel and safety chain With return temperature control mode, the boiler is The Bosch CFB control units are of modular design. This operated with a fixed figure for the return temperature. enables the selection of well-matching and economical...

  • Page 44: Cfb 930 And Cfb 910 Control Units

    The CFB 930 and CFB 910 digital control units can temperature value or output specification (heat control a floor standing Bosch oil or gas boiler with a demand) with third party heating circuit control units single stage, 2-stage or modulating burner. They also •...

  • Page 45: Side Control Unit Holder

    Boiler control and control system | 45 be fitted with an actuator and controlled by the CFB control unit. – Control of a separate actuator: If the operating flow temperature of the boiler is not reached, the actuator (3-way mixer) is closed. This setting is advisable when supplying heat to externally controlled heating circuits or for heating circuits without actuator.

  • Page 46: Unimatic Display Units And Control Units

    46 | Boiler control and control system UNIMATIC display units and control units BCO boiler control With the standard equipment level of the UNIMATIC The intuitive BCO boiler control based on a PLC offers display units and control units, the digital display shows maximum operating data transparency for optimum the flow, return or flue gas temperature with an accuracy boiler operation and also provides comprehensive...

  • Page 47: Dhw Heating

    The UNIMAT UT-L boilers can be used for central DHW many application options. heating. They can be combined with any Bosch DHW cylinder. The WST cylinders are available as horizontal or vertical versions in different sizes with up to 6000 l System examples capacity.

  • Page 48: Hydraulic Connection

    9.1.2 Control system The operating temperatures should be controlled with the Bosch CFB control unit in weather-compensated mode. It is also possible to control individual heating circuits in room temperature-dependent mode (with a room temperature sensor in a reference room). For this, the actuators and heating circuit pumps are constantly actuated by the CFB control unit.

  • Page 49: Pipework Schemes

    System examples | 49 9.1.4 Pipework schemes Temperature maintaining: version with RTS return flow temperature safeguard using return temperature maintaining 11.001 10.001 13.003 13.003 D10.008 D10.008 D11.006 D11.006 D13.012 D13.012 D13.011 D13.011 D13.007 D13.007 D13.010 D13.010 13.003 13.003 D12.001 D12.001 6720803977-16.1itl Fig.
  • Page 50 50 | System examples Temperature maintaining: version with RTS return flow temperature safeguard using return temperature raising 11.001 10.001 13.003 13.003 D11.012 D11.012 D10.008 D10.008 D13.012 D13.012 D13.011 D13.011 D13.007 D13.007 D13.010 D13.010 13.003 13.003 D12.001 D12.001 6 720 803 977-17.1itl Fig.
  • Page 51 System examples | 51 High-pressure temperature maintaining: gas supply pressure ≤ 10 bar; DHW temperature ≤ 110 °C D13.003 D13.010 D13.007 D13.011 D13.012 D13.013 6 720 803 977-26.1itl Fig. 33 Temperature maintenance D13.013 Tee at outlet D13.010 Shut-off valve (motorised) D13.007 Temperature maintaining pump D13.011 Non-return valve D13.012 Shut-off valve...

  • Page 52: Safety Equipment To Din-En 12828

    52 | System examples Safety equipment to DIN-EN 12828 [15] Shut-off valve – protected against unintentional closure, e.g. by sealed cap valve 9.2.1 Requirements [16] Drain upstream of the expansion vessel [17] Expansion vessel (DIN-EN 13831) No claim is made as to the completeness of the diagrams or the corresponding design information for the system ] The maximum achievable flow temperature in examples.

  • Page 53: Safety Equipment For The Flue Gas Heat Exchanger

    System examples | 53 9.2.3 Safety equipment for the flue gas heat general, this results in the maximum achievable average exchanger operating flow temperatures, according to table. The flue gas heat exchanger requires an additional safety The boiler temperature must be at least 70 °C. It can be valve with pressure gauge and venting facility if a shut- modulating or kept constant.
  • Page 54 54 | System examples Boiler circuit pump flow rate V Total boiler flow rate V Kges The boiler circuit pump, also known as a shunt pump, is The head of the boiler circuit pump is the result of: required to control the return temperature (flow past •...

  • Page 55: Boiler Circuit Pump As Primary Circuit Pump

    System examples | 55 9.3.2 Boiler circuit pump as primary circuit pump 90 °C 70 °C 6 720 642 347-48.1il Fig. 36 Sample hydraulic circuit for a 2-boiler system with boiler circuit pump as primary circuit pump FVS Strategy flow temperature sensor boiler circuit pump may then need to be matched to the Return temperature sensor pump rate of the heating circuits.

  • Page 56: Hydraulic Balancing Line

    56 | System examples 9.3.3 Hydraulic balancing line Example A hydraulic balancing line (low loss header) is used to Given hydraulically separate the boiler circuit and the heating • Total flow rate V = 223.6 m Kges circuits. • Flow velocity (assumed) v = 0.2 m/s Installing a hydraulic balancing line has many Result advantages:...

  • Page 57: 1-Boiler System With Unimat Ut-L Boiler: Boiler And Heating Circuit Control Unit

    System examples | 57 1-boiler system with UNIMAT UT-L boiler: boiler and heating circuit control unit CFB 930 + CMM 920 6 720 803 977-18.1itl Fig. 38 System example for UNIMAT UT-L boiler CFB control unit for boiler and heating circuit control unit (list of ...

  • Page 58: 1-Boiler System With Unimat Ut-Lboiler: Boiler And Heating Circuit Control Unit With Hydraulic Separation

    58 | System examples 1-boiler system with UNIMAT UT-Lboiler: boiler and heating circuit control unit with hydraulic separation DDC / GLT CFB 930 + CMC 930 + CMM 920 6 720 803 977-19.1itl Fig. 39 System example with boiler and heating circuit control unit and hydraulic separation (list of abbreviations ...

  • Page 59: 1-Boiler System With Unimat Ut-L Boiler: Boiler Circuit Control Unit

    System examples | 59 1-boiler system with UNIMAT UT-L boiler: boiler circuit control unit CFB 810 + CME 930 6 720 803 977-20.1itl  Fig. 40 System example with boiler circuit control unit (list of abbreviations page 47) ] Enabling (potential-free) Function description ...

  • Page 60: 1-Boiler System With Unimat Ut-L Boiler: Boiler Circuit Control Unit With Hydraulic Separation

    60 | System examples 1-boiler system with UNIMAT UT-L boiler: boiler circuit control unit with hydraulic separation CFB 810 + CME 930 6 720 803 977-21.1itl  Fig. 41 System example with boiler circuit control unit and hydraulic separation (list of abbreviations page 47) ] Enabling (potential-free) Function description...

  • Page 61: 2-Boiler System With Two Unimat Ut-L Boilers: Boiler Circuit Control Unit With Hydraulic Separation

    System examples | 61 2-boiler system with two UNIMAT UT-L boilers: boiler circuit control unit with hydraulic separation + CMC 930 6 720 803 977-22.1itl Fig. 42 System example for a 2-boiler system with boiler circuit control unit and hydraulic separation (list of ...

  • Page 62: 1-Boiler System With Unimat Ut-L Boiler With Flue Gas Heat Exchanger: Boiler Circuit Control Unit

    62 | System examples 1-boiler system with UNIMAT UT-L boiler with flue gas heat exchanger: boiler circuit control unit CFB 810 + CME 930 6 720 803 977-23.1itl  Fig. 43 System example with boiler circuit control unit (list of abbreviations page 47) ] Enabling (potential-free) Function description...

  • Page 63: 1-Boiler System With Unimat Ut-L Boiler With Condensing Heat Exchanger: Boiler Circuit Control Unit With Hydraulic Separation

    System examples | 63 9.10 1-boiler system with UNIMAT UT-L boiler with condensing heat exchanger: boiler circuit control unit with hydraulic separation CFB 810 + CME 930 6 720 803 977-24.1itl  Fig. 44 System example with boiler circuit control unit and hydraulic separation (list of abbreviations page 47) ] Enabling (potential-free) Function description...

  • Page 64: Separation

    64 | System examples 9.11 2-boiler system with UNIMAT UT-L boiler without flue gas heat exchanger and UT-L boiler with condensing heat exchanger: boiler circuit control unit with hydraulic separation CFB 910 CFB 930 + CMC 930 6 720 803 977-25.1itl Fig.

  • Page 65: Unimat Ut-L Boiler With Flue Gas Heat Exchanger Or Condensing Heat Exchanger: Return Temperature Raising

    System examples | 65 9.12 UNIMAT UT-L boiler with flue gas heat exchanger or condensing heat exchanger: return temperature raising SRWT 6 720 642 347-59.1il  Fig. 46 Installation of the heat exchanger in the UNIMAT UT-L boiler (list of abbreviations page 47) Special design information The circuit diagram is only a schematic...

  • Page 66: Fitting

    UNIMAT UT-L boiler with flue gas UNIMAT UT-L boiler UNIMAT UT-L boiler heat exchanger Boiler size Minimum width Minimum height Minimum width Minimum height [mm] [mm] [mm] [mm] UT-L 1 – 1400 1850 1500 1865 UT-L 4 UT-L 2 1550 2000...

  • Page 67: Design Of Installation Rooms And Combustion Air Supply

    Fitting | 67 10.2 Design of installation rooms and • The internal height and width of all walk-on surfaces must be sufficient. Access to the system must be combustion air supply ensured in line with local regulations. If the internal 10.2.1 Installation location height of the installation room is lower than required...
  • Page 68 68 | Fitting Sizing ventilation and extract air apertures • Size ventilation and extract air apertures to obtain a pressure of ± 0 mbar in the boiler installation room. • If the combustion air is routed via air inlet channels to the burner, ensure an optimised flow path and adequate sizing with regard to the pressure loss.

  • Page 69: Installation Dimensions

    Always observe the local regulations. UNIMAT UT-L boiler Installation room dimensions Boiler size Length Height Side clearance [mm] [mm] [mm] [mm] [mm] UT-L 1 – 2100 1000 3300 1200 UT-L 4 UT-L 2 2500 1000 3500 1300 UT-L 10...

  • Page 70: Installation Room Dimensions For The Unimat Ut-L Boilers With Flue Gas Heat Exchanger

    70 | Fitting 10.3.2 Installation room dimensions for the UNIMAT UT-L boilers with flue gas heat exchanger 6 720 642 347-61.1il Fig. 48 UNIMAT UT-L boiler installation room dimensions Allow extra space for sound insulation measures. Maintain the specified wall clearances to facilitate installation, service and maintenance work.

  • Page 71: Additional Safety Equipment To Din-En 12828

    Fitting | 71 10.4 Additional safety equipment to DIN-EN 12828 10.4.1 Safety equipment High limit safety cut-out (STB) with shutdown temperature ≤ 110 °C Safety equipment version Heat source > 300 kW Safety equipment assembly, standard equipment required level Set with STB and maximum pressure limiter Required Minimum pressure limiter Alternative to low water indicator...

  • Page 72: Intermediate Return Piece

    72 | Fitting Intermediate flow Internal piece diameter Measurements Volume Shipping weight Type Length Width [mm] [mm] [mm] [kg] SP 50 DN50 SP 65 DN65 SP 80 DN80 SP 100 DN100 SP 125 DN125 SP 150 DN150 13.8 SP 200 DN200 23.3 SP 250...

  • Page 73: Safety Valve

    Fitting | 73 Intermediate return piece Nominal diameter Measurements Volume Shipping weight Type Height Width PN16 PN25 PN40 [mm] [mm] [mm] [kg] [kg] [kg] RP 80 DN80 DN40 – RP 100 DN100 DN50 – RP 125 DN125 DN65 – RP 150 DN150 DN65 –...
  • Page 74 74 | Fitting ARI safety valve, Figure 902 Internal diameter, valve size DN32 DN40 DN50 DN65 DN80 DN100 DN125 DN150 Maximum response pressure Applicable for a maximum boiler output of [bar] [kW] [kW] [kW] [kW] [kW] [kW] [kW] [kW] 1360 2300 3480 5440...

  • Page 75: Flash Trap To Din-En 12828

    Fitting | 75 10.4.5 Flash trap to DIN-EN 12828 In accordance with DIN-EN 12828, flash traps are to be provided for boilers with a rated output > 300 kW. It is not necessary to install a flash trap in heating systems. This applies as long as an additional high limit safety cut- out and an additional maximum pressure limiter are installed.

  • Page 76: Return Flow Temperature Safeguard Set (Maintaining Version)

    76 | Fitting 10.4.6 Return flow temperature safeguard set (maintaining version) 6 720 642 347-66.1il Fig. 53 Standard delivery of the return flow temperature safeguard set (coloured grey) for UNIMAT UT-L boilers [RK] Return [VK] Flow Shut-off damper with notched lever 3-way valve with actuator Pump Non-return valve or check valve...

  • Page 77: Additional Devices For Sound Insulation

    To achieve the noise disturbance this causes. Bosch offers three sound required attenuation, the boiler installation surface must insulation devices that are specially matched to the be perfectly even (foundation dimensions ...

  • Page 78: Boiler Foundation

    Channel section Length Width Length Width Height Width Boiler size Boiler size [mm] [mm] [mm] [mm] [mm] [mm] UT-L 1 – 1850 1750 UT-L 4 UT-L 2 2200 1010 2100 UT-L 10 UT-L 6 2450 1010 2350 UT-L 14 UT-L 8...

  • Page 79: Further Accessories

    Fitting | 79 10.6 Further accessories 10.6.2 Walk-on boiler cover As additional equipment, Bosch offers a walk-on boiler 10.6.1 Drain connection and blow-down valve cover. Also available with this are a ladder and safety rail assembly with toe board. The walk-on boiler cover is already fitted To enable the boiler to be drained quickly and, if when the boiler is delivered.
  • Page 80 80 | Fitting UNIMAT UT-L boiler Dimensions Weight Length Width Height Boiler size [mm] [mm] [mm] [mm] [kg] UT-L 4 UT-L 2 2150 1505 UT-L 10 UT-L 6 2400 1605 UT-L 14 UT-L 8 2600 1000 1705 UT-L 18 UT-L 12 3100 1220 1100...

  • Page 81: Flue System

    Flue system | 81 11.1.2 Special information for flue systems of boilers Flue system with condensing flue gas heat exchangers A correctly sized flue system is essential for the function 11.1 Requirements and operation of the boiler with condensing heat exchanger.

  • Page 82: Condensate Drain

    The integral electronic control unit has functions for monitoring and service: × × • Burner safety shutdown in conjunction with CFB control units from Bosch F. 12 Calculation of the annual condensate volume • Overflow protection • Display for changing the neutralising granulate Hours of full utilisation (to VDI 2067) in h/a •...
  • Page 83 NE 2.0 can be connected in parallel. BFor systems with a higher output and therefore larger condensate volumes, or for systems with dual fuel combustion, Bosch offers a further range of neutralising systems. Example For a boiler with condensing heat exchanger, boiler size UT-L 24 (DHW inlet temperature into the condensing heat exchanger 30 °C), approx.

  • Page 84: Keyword Index

    84 | Keyword index Keyword index Handling dimensions..........66 Hydraulic balancing line ........48, 56 Hydraulic separation ......58, 60–61, 63–64 Boiler efficiency............5, 28 Boiler foundation............78 Installation location ........... 67 Boiler house dimensions Intermediate return piece ........72, 76 UNIMAT UT-L boiler ..........
  • Page 85 Keyword index | 85 Return temperature raising facility ......48 UNIMAT UT-L boiler.......... 57–65 System temperature Boiler efficiency ............. 28 Flue gas temperature ..........30 Sizing ............... 6 Standard seasonal efficiency ......... 7, 28 Transport options............66 UNIMAT UT-L boiler ............9 Boiler house dimensions........
  • Page 86 86 | Notes 6 720 807 794 (2013/04) UNIMAT...
  • Page 87 | 87 UNIMAT 6 720 807 794 (2013/04)
  • Page 88 Bosch Industriekessel GmbH Nürnberger Str. 73 91710 Gunzenhausen Deutschland www.bosch-industrial.com...

This manual is also suitable for:

Ut-l 2Ut-l 6Ut-l 10Ut-l 14Ut-l 8Ut-l 4 ... Show all

Table of Contents