Buderus Logano G225 Installation And Service Instructions Manual
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Buderus Logano G225 Installation And Service Instructions Manual

Fan-assisted low temperature/condensing boiler
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Installation and service
instructions
Logano G225/Logano plus
GB225 with BE burner
Fan-assisted
low temperature/
condensing boiler
For contractors
Please read carefully before
use.

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Summary of Contents for Buderus Logano G225

  • Page 1 Installation and service Fan-assisted low temperature/ instructions condensing boiler Logano G225/Logano plus For contractors GB225 with BE burner Please read carefully before use.

  • Page 2: Table Of Contents

    5.2.2 Carrying out the leak test Heating system servicing Installation of pre-assembled boiler heat Why is regular servicing important? exchanger Preparing the boiler for servicing Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.
  • Page 3 9.3.1 Cleaning the boiler with cleaning brushes 9.3.2 Wet cleaning (chemical cleaning) Checking the heating system operating pressure Servicing and maintenance reports Troubleshooting Index Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 4: General Safety Instructions And Explanation Of Symbols

    V Inform the customer not to carry out any alterations or repairs. Danger due to short-circuits To prevent short circuits: V Only use genuine Buderus wiring. Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 5: Explanation Of Symbols

    Cross-references to particular places in the document or to other documents are marked with an arrow Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 6: Product Details

    – Sack truck with securing strap or Buderus boiler trolley correct use of this appliance. – Timber supports – Cleaning brushes and/or chemical cleaning agent for wet cleaning Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 7: Disposal

    V All heating system components that have to be replaced should be disposed of in an environmentally responsible manner at an authorised disposal site. Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 8: Product Description

    The insulation [3] prevents radiation losses. Fig. 1 G225/GB225 boiler Control unit Boiler casing Boiler heat exchanger and insulation Burner Burner hood Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 9: Contents

    Control unit, technical 1 box documentation for controller Tab. 2 Contents 1) The adjustable feet are packed with the burner hood Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 10: Dimensions And Specifications

    Example: Safety limit (STB) = 100 °C, maximum possible flow temperature = 100 - 10 = 90 °C The safety limit must meet the national regulations of the country concerned. Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 11: Boiler Room And Ambient Conditions

    Any general and burner components or control equipment, which come into contact with water, must be replaced before re-commissioning. Tab. 5 Installation room and environment Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 12: Conditions For Combustion Air Supply

    In some cases, the actual figures attained in practice will be below those stated to comply with LRV requirements within the specified output range. Tab. 8 Country-specific fuels and remarks Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 13: Conditions For The Power Supply

    The heating system may only be filled and topped up with water of domestic water quality. We recommend a pH value of 8.2 – 9.5. Tab. 10 System configuration and water quality Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 14: Transporting The Boiler

    V Use suitable means of transportation, e.g. the Buderus boiler hand truck with strap. V Secure the load against falling. Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 15: Boiler Positioning

    (dimensions in mm) Where applicable, allow extra wall clearances for additional components such as DHW cylinder, pipe connections, flue silencer or other flue components, etc. Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 16: Boiler Block Assembly

    V When using a cleaning agent, avoid naked flames, glowing embers and sparks. Boiler bosses V Observe the manufacturer's handling and Rear section safety instructions. Wooden battens Joint lip Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 17: Driving Nipples Home

    6 720 615 876-07.1RS Fig. 7 Driving boss liners home Boss liner in the upper boiler hub Boss liner in the lower boiler hub Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 18: Preparing The Centre Section

    Fig. 9 Inserting the packing cord V Where the 2 ends meet, overlap the packing cord by 2 cm and press firmly together. Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 19: Knocking The Centre Section Into Place

    [2] so that the boiler heat exchanger is slightly tilted to the rear for the subsequent assembly process. 6 720 615 876-11.1RS Fig. 11 Righting the part assembled block Flat board Centre section Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 20: Joining The Boiler Sections At The Upper

    Pressure plate (dia. 135 × 25, top boiler boss) Brace plate (dia. 135 x 25, top boiler boss) Wedge Pull rod in the upper boiler hub Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.
  • Page 21 V Prepare all other centre sections as described above Fig. 15 Locating the ratchet and then join using boss liners. Spanners Clamping nuts Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 22: Fitting The Anchor Rods

    6 720 615 876-17.1RS Fig. 17 Fitting the anchor rods – arrangement of the dished washers Anchor rods Spring washers Cast lugs Compression tool Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 23: Installation Of The Feed Pipe And Connection Profile

    [1] in place into the top boiler boss from the back. 6 720 615 876-19.1RS Fig. 19 Installation of the feed pipe and connecting block Gasket Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.
  • Page 24 6 720 615 876-21.1RS Fig. 21 Sealing off connections that are not required Blanking plug Plain washer Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 25: Fitting The Temperature Sensor

    6 720 615 876-22.1RS Fig. 22 Temperature sensor fitted to reducer 6 720 615 876-23.1RS Fig. 23 Fitting the temperature sensor Temperature sensor Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 26: Fitting The Flue Outlet

    6 720 615 876-26.1RS Fig. 26 Closing the boiler hubs at the front section Dummy flange Blanking plug Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 27: Checking For Leaks

    For the remaining stages of boiler installation, refer to 6 720 615 876-27.1RS Chapter 5.4, page 28. Fig. 27 Separating the boiler block Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 28: Installation Of Pre-Assembled Boiler Heat Exchanger

    6 720 615 876-30.1RS Fig. 30 Inserting hot gas baffles into 2nd hot gas flue (in this case in the centre) Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 29: Installing The Burner Door

    6 720 615 876-33.1RS Fig. 33 Hanging the burner door (on the right in this case) M 12 × 25 hexagon bolt Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 30: Installing The Boiler Casing

    V Secure the top crossmember to threads of the anchor rods [1] using the nuts supplied. 6 720 615 876-36.1RS Fig. 36 Installation of the upper tie bar Anchor rods Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.
  • Page 31 [1]. 6 720 615 876-38.1RS Fig. 38 Installation of the thermal insulation Spring strap Thermal insulation tabs Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.
  • Page 32 6 720 615 876-40.1RS Fig. 40 Fitting the mains power cable Cable clip for mains power cable Temperature sensor lead Communication cable SAFe Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.
  • Page 33 V Hook the rear part of the side panel over the protruding hook [B]. 6 720 615 876-43.1RS Fig. 43 Hooking-in the side panel Top crossmember Protruding hook Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.
  • Page 34 V Fit brackets [1] for fixing the burner hood to left and right side panels. 6 720 615 876-45.1RS Fig. 45 Fitting brackets to side panels Bracket Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.
  • Page 35 The temperature sensor [1] is fitted to a reducer. V Fit the reducer with temperature sensor [1] attached. 6 720 615 876-47.1RS Fig. 47 Fitting the temperature sensor Temperature sensor Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.
  • Page 36 V Slide the two halves of the insulation box onto the connection profile. 6 720 615 876-50.1RS Fig. 50 Insulating the connection profile. Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 37: Positioning And Levelling The Boiler

    Protect boiler connections from damage and dirt if the boiler is not to be installed immediately. 7 747 019 141-11.1RS Fig. 52 Levelling the boiler horizontally Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 38: Installing The Boiler

    6 720 615 876-53.1RS Fig. 53 Fitting the flue pipe sealing collar (example) Flue pipe Flue pipe sealing collar Boiler flue outlet Jubilee clip Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 39: Flue Pipe Sealing Collar For Positive Pressure Flue (Pressure At Boiler Outlet > 0 Mbar)

    V Connect central heating return to connection RK. VS: DHW cylinder flow RS: DHW cylinder return V Connect the central heating flow to connection VK. EL: Drain Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 40: Connecting The Safety Flow And Return

    V Fit and seal the boiler fill & drain valve to connection EL. 6 720 615 876-58.1RS Fig. 58 Fitting boiler fill & drain valve Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 41: Filling The Heating System And Checking For Leaks

    V Top up with water if the pressure drops as a result of venting the system. V Remove the hose from the boiler fill & drain valve. Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 42: Connecting The Fuel Supply

    V Let the resilient hooks of the control unit click into the openings by pushing the control unit down. 6 720 615 876-60.1RS Fig. 60 Fitting the control unit Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 43: Connecting The Mains Power Supply And Other Components

    2. Slide the cable clamp downwards. 3. Press in. 4. Flip the toggle up. 6 720 615 876-62.1RS Fig. 62 Securing cables with a cable clamp Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 44: Installing Casing Parts

    V Place rear control unit cover [2] on rear boiler top panel and fasten with two screws. 6 720 615 876-64.1RS Fig. 64 Fitting the end hood Controller cover End hood Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 45: Commissioning The Heating System

    (e.g. by Red needle water from heating systems). Pressure gauge needle Green range V Vent the heating system during filling. Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 46: Preparing The Heating System For Operation

    Starting the burner For further commissioning steps, follow the sequence of burner commissioning. To do so, it is essential that you consult the burner documentation. Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 47: Raising The Flue Gas Temperature

    V Remove the hot gas check plate; to do this remove the screw. V Re-check the flue gas temperature. 6 720 615 876-67.1RS Fig. 68 Removing the hot gas check plate Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 48: Installing The Burner Hood

    V Set both rotary selectors on the control unit to "AUT" (automatic mode). In this setting, the room controller takes over control. 6 720 615 876-70.1RS Fig. 71 Setting the control unit Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 49: Commissioning Report

    ( boiler operating of the additional commissioning operations instructions). required for the Logano plus GB225 are given in the enclosed supplement. Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 50: Shutting Down The Heating System

    V Isolate the heating system from the mains power supply by means of the heating system emergency stop switch or the appropriate electrical fuse/circuit breaker. Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 51: Heating System Servicing

    If the burner door has been fitted with the hinges on the left, also disconnect the communication and sensor lead from the SAFe as well as the mains power plug. Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 52: Cleaning The Boiler

    V Clean the hot gas flues by rotating the round cleaning brush. 6 720 615 876-73.1RS Fig. 74 Brushing out the hot gas flues Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 53: Wet Cleaning (Chemical Cleaning)

    70 °C. V Shut down the heating system. V Brush out the hot gas flues. V Start up the heating system again (see above). Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 54: Checking The Heating System Operating Pressure

    V Top up with water via the boiler fill & drain valve. V Bleed the heating system. V Check the operating pressure again. Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 55: Servicing And Maintenance Reports

    Logano G225. Details of the additional servicing and maintenance operations required for the Logano plus GB225 are given in the enclosed supplement. Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.
  • Page 56 Tab. 14 Servicing log (continued) If any condition requiring maintenance work is identified in the course of servicing, that work must be carried out as required. Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.
  • Page 57 Company stamp/ Company stamp/ Company stamp/ Company stamp/ Company stamp/ Company stamp/ signature signature signature signature signature signature signature Tab. 16 Maintenance log (continued) Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 58: Troubleshooting

    V Protect the heating system against frost by draining the heating system and DHW pipes from the lowest point. Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.

  • Page 59: Index

    ..........Mains power supply ............Mains supply ............ ON/OFF switch ..........Operating pressure ......Operating pressure, permissible ............ Pressure gauge ......... Pressure/temperature gauge Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.
  • Page 60 United Kingdom Cotswold Way, Warndon, Worcester WR4 9SW Customer service: 0870 421 5933 Technical support: 0870 421 5944 Fax: 01905 753130 www.buderus-commercial.co.uk In the UK and IE, Buderus is a brand name of Bosch Thermotechnology Ltd.

This manual is also suitable for:

Logano plus gb225

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