Table of Contents
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Installation and Service
Instructions
Logano GB125 BE US/CA
Low Emissions and
High Efficiency
Condensing Oil Boiler
CAUTION!
Observe the safety instructions of this installation
and maintenance manual before placing the boiler
in operation.
DANGER!
Installation, adjustment, modification, operation or
maintenance of the heating system carried out by
an unqualified person may result in danger to life
and limb or property damage.
The directions of this installation and maintenance
manual must be followed precisely.
Contact a trained and certified service company or
service provider if support or additional information
is required.
CAUTION!
The operating manual is a component of the techni-
cal documentation and must be handed over to the
operator of the heating system.
Discuss the instruction in this manual with the ow-
ner or operator of the heating system to ensure that
they are familiar with all information required for
operation of the heating system.
For trained and certified
installers
Please read carefully prior
to installation, maintenance
and service
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Table of Contents
Related Manuals for Buderus Logano GB125/22 BE
Summary of Contents for Buderus Logano GB125/22 BE
- Page 1 Installation and Service Low Emissions and High Efficiency Instructions Condensing Oil Boiler CAUTION! Observe the safety instructions of this installation and maintenance manual before placing the boiler in operation. DANGER! Installation, adjustment, modification, operation or maintenance of the heating system carried out by an unqualified person may result in danger to life and limb or property damage.
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Page 2: Table Of Contents
Contents Contents 5.8.1 Logamatic control installation Safety instructions and explanation of 5.8.2 Fitting the temperature sensor assembly symbols 5.8.3 Power connection and connections of Safety instructions additional components Explanation of symbols 5.8.4 Fitting cable strain relief Standards, regulations and code compliance Install the back boiler cover Notes on installation and operation 1.4.1 Other important information... -
Page 3: Safety Instructions And Explanation Of Symbols
Safety instructions and explanation of symbols Safety instructions and explanation of symbols Safety instructions Danger from electrical shock V Before opening the boiler: If you smell flue gas Disconnect the heating system from the electrical V Switch off the boiler ( page 38). -
Page 4: Explanation Of Symbols
V Use only genuine spare parts. Damage caused by the Notes are identified in the text by this sym- use of parts not supplied by Buderus is not covered by bol. They are bounded by horizontal lines the Buderus warranty. -
Page 5: Standards, Regulations And Code Compliance
Safety instructions and explanation of symbols Standards, regulations and code 1.4.1 Other important information compliance – Only operate the boiler with the concentric air/venting system specifically designed and approved for it. It is the installers responsibility to ensure the – Follow the local code when connecting the conden- installation and operation of this heating sys- sate outlet to the public sewer system. -
Page 6: Product Description
– are skilled in dealing with heating systems and DHW installa- tions. This boiler must be installed with one of the Buderus sup- plied concentric heating systems. – Concentric direct vent side wall kit –... -
Page 7: Product Details
Product description Product details This boiler is an oil-fired, fan-assisted condensing boiler with modulating control of boiler water temperature. The boiler consists of: – Control panel – Boiler jacket – Boiler heat exchanger with insulation – Burner – Heat exchanger system The controls monitor and control all electrical boiler com- ponents. -
Page 8: Heating System Water Quality
DHW systems, plus metric wrenches and metric Allen wrenches. The following may also prove useful: – Hand truck with securing strap or Buderus boiler cart – Wood battens – Cleaning brushes and/or chemical cleaning agent for wet cleaning... -
Page 9: Package Contents
Product description Package Contents V Upon delivery, check that the packaging is undam- aged. V Check the delivery for completeness. Component Packaging Boiler heat exchanger 1 pallet Boiler casing, factory-fit- ted to boiler heat exchanger Burner hood, factory-fitted to boiler heat exchanger Heat exchanger system Oil burner with factory-fit- ted burner door... -
Page 10: Dimensions And Specifications
Product description Dimensions and specifications 2.6.1 Logano GB125 BE dimensions Fig. 3 Connections and dimensions (measurements in inches) = Boiler supply = Boiler return = Boiler drain (connection for drain valve) Dimensions and connections: Boiler model Unit GB125/22 BE GB125/30 BE GB125/35 BE Boiler sections Rated heat output (gross output) -
Page 11: Conditions For Operation
Conditions for operation Maintaining the specified operating conditions will enable the boiler to provide a high level of reliability and long serv- ice life. Some details relate only to operation with Buderus Logamatic control panels. Caution: Risk of system damage if operating conditions are not maintained. -
Page 12: Boiler Room And Ambient Conditions
Product description 2.7.2 Boiler room and ambient conditions Operating conditions Notes – Requirement in greater detail Temperature in the boiler room +40 to +104 °F relative humidity max. 90 % No condensation or precipitation inside the boiler room − Dust/airborne particles Excessive dust inside the boiler room must be avoided when the boiler is opera- ting, e.g.: –... -
Page 13: Disposal
Product description Disposal V Dispose of boiler packaging in an environmentally responsible manner. V All heating system components that have to be replaced should be disposed of in environmentally responsible manner at an authorized disposal site. Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice. -
Page 14: Moving The Boiler
Moving the boiler Moving the boiler This chapter details how to move the boiler safely. Caution: Risk of system damage from im- pact shocks! Fragile components could be damaged. V Observe the transport instructions on the packaging. Protect boiler connections from damage and dirt if the boiler is not installed immediately. -
Page 15: Lifting And Carrying The Boiler
Warning: Risk of injury if load is inadequate- ly secured during transportation. V Use suitable means of transportation, e.g. the Buderus boiler hand truck with strap. V Secure the load against falling. You can order the boiler hand truck from your Buderus distributor. -
Page 16: Placing The Boiler
Placing the boiler Placing the boiler This chapter describes how to install and place the boiler in the boiler room. Caution: Risk of system damage due to freezing. V Install the heating system in a frost-free room. Wall clearances Wherever possible, position the boiler with the recom- mended wall clearances. -
Page 17: Reversing The Burner Door
Placing the boiler Reversing the burner door The burner door is factory-fitted with the hinges on the right – the burner door opens to the right. You can change the burner door hinges over to the left-hand side if required to suit the installation site. Requirement: the burner hood must have been removed first ( Chapter 3.1, page 14). -
Page 18: Mounting The Adjustable Feet
Placing the boiler Mounting the adjustable feet (included with B-kit) Level the boiler by turning the adjustable feet to prevent air pockets becoming trapped inside the boiler. Requirement: the burner hood or burner door panel must have been removed first ( Chapter 3.1, page 14). -
Page 19: Boiler Installation
Boiler installation Boiler installation This chapter details how to install your boiler correctly. Flue pipe installation This involves the following steps: The overall burner air supply/boiler flue pipe system con- – Connecting the venting system forms to the types of oil combustion equipment listed in –... -
Page 20: Test Ports
Boiler installation Test ports Flue gas readings and combustion air temperature read- ings are taken exclusively at the dedicated testing ports. Follow the directions in the instructions for the Logatop BE oil burner. Fig. 13 Fitting the flue/air pipe socket Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice. - Page 21 Boiler installation Choice of installation site for side-wall flue termination Choosing the right location for siting the terminal is critical to proper functioning of the appliance. As well as the min- imum clearances ( Fig. 14), the following rules must be observed: Concentric side wall boiler...
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Page 22: Installation Options
Boiler installation Installation options The GB125 boiler is approved with the following venting systems available from Buderus: Types of installation Description HT-K Concentric combustion air Horizontal direct vent concentric com- and vent pipe exiting horizon- bustion air and venting pipe system tally through external wall. - Page 23 Boiler installation Table 12 shows the maximum permissible vent length for the different types of systems. Maximum length of flue pipe, feet (m) Plastic flue system DN 80/125 HT-K GA-K Boiler size direct vent vertical vent masonry chimney GB125 17’ (5.2 m) 51’...
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Page 24: Installation Of Water Connections
Boiler installation Installation of Water Connections Caution: due to leaking connections. V Install the piping connections to the boiler without having undue stress on the near boiler piping. 5.4.1 Installing B-Kit The relief valve and pressure/temperature gauge are installed into the supply manifold as described below: V Use the 1-1/4"... -
Page 25: Installation Of Boiler Drain (Included In B-Kit)
Boiler installation 5.4.2 Installation of boiler drain (included in B-Kit) V Seal boiler drain to connection EL. Install a fill connection in the supply piping to the boiler. 7 747 019 141-15.1RS Fig. 17 Installation of boiler drain Return Drain 5.4.3 Installation of system components See the installation diagram for installation of the heating... -
Page 26: Filling Heating System And Checking For Water Leaks
Boiler installation Filling heating system and checking for water leaks The boiler is tested for leaks at the factory. To make sure that no leaks occur during operation, the heating system must be checked for leaks before commissioning. Caution: Risk of system damage due to ex- cess pressure when testing for leaks! Pressure, control and safety equipment may be damaged by excessive pressure. -
Page 27: Connecting The Fuel Supply
Boiler installation Warning: Health risk from contaminated do- mestic water. V Always observe the regulations and stand- ards applicable in your jurisdiction for the prevention of contamination of drinking water (e.g. by water from heating sys- tems). V Bleed secondary heat exchanger using the bleed valve [1]. -
Page 28: Condensate Trap
Boiler installation Condensate trap Ensure that the condensate trap and piping are installed that fluids drain away freely, and backup into the boiler is prevented. V The boiler has the potential to produce significant amounts of condensate which must be drained and disposed off properly. -
Page 29: Electrical Connections
Boiler installation Electrical connections This section only applies to boilers using Buderus con- trols. Danger: Risk of fatal injury from electric shock! V Electrical work may only be carried out by qualified technicians. V Before opening any electrical equipment, isolate it from the power supply and take steps to ensure it can not be inadvertently reconnected. -
Page 30: Fitting The Temperature Sensor Assembly
Boiler installation V Remove the top cover of the controls. – Unscrew the cover screws [1]. V Secure the programming unit with self-tapping screws [2]. 7 747 019 141-22.1RS Fig. 25 Cover, removing Cover screws Self-tapping screws 5.8.2 Fitting the temperature sensor assembly Caution: Capillary tubes can get damaged from severe kinking or sharp burrs. -
Page 31: Power Connection And Connections Of Additional Components
Boiler installation V Insert the temperature sensor assembly and balancing spring [3] in the immersion sleeve [1] and push fully home. The plastic coil [2] is pushed back automatically. V Push the sensor retaining clip [4] (supplied with the programming unit) sideways onto the top of the well. Ensure good contact between the sensor surfaces in the well [1] to ensure reliable heat conduction. -
Page 32: 5.8.4 Fitting Cable Strain Relief
Boiler installation 5.8.4 Fitting cable strain relief Secure all cable runs with cable ties (included with the control): V Insert the cable ties together with the cable from the top into the slots in the frame (step 1). V Slide the cable ties downward (step 2). V Push against the ties (step 3). -
Page 33: Placing The Heating System In Operation
Placing the heating system in operation Placing the heating system in operation This chapter describes the initial start-up procedure regardless of the installed control device. V Complete the start-up protocol during this process Chapter 6.9, page 37). Further information on boiler room conditions and require- ments, combustion air supply and flue systems and boiler operation can be found in Chapter 2.7, page 11. -
Page 34: 6.2 Testing Relief Valve
Placing the heating system in operation Testing relief valve V Make sure that no people are in the discharge area of the pressure relief valve. V Raise the lever on the pressure relief valve. The pressure relief valve must open and release pressure. If the safety valve fails to release excess pressure, it must be replaced, because otherwise system components may be damaged by excessive operating pressure. -
Page 35: 6.6 Taking Measurements
Placing the heating system in operation Taking measurements Allow burner to operate for 15 to 20 minutes before a combustion test. Earlier combustion tests can lead to incorrect readings as a result of burning off the sealant rope. We recommend checking the burner after a few weeks of operation. -
Page 36: 6.7 Checking The Manual Reset High Limit (Stb)
Placing the heating system in operation Checking the manual reset high limit (STB) The temperature safety cut-out interrupts the power sup- ply if the maximum permissible flow temperature is exceeded. To enable a boiler reset and re-starting, the fault must be removed and the system must have fallen back below the limit. -
Page 37: Commissioning Log
Placing the heating system in operation Commissioning log V Initial and date the commissioning operations carried out. Commissioning operations Page Readings taken Comments Fill heating system and check for leaks ____________ psi – Heating system pressure Fill trap with water Bringing the system up to operating pressure V Bleeding heating system ____________ psi... -
Page 38: 12 7.2 Shutting Down The Heating System In An
Normal shut-down 7 747 019 141-34.1RS V With Buderus controls: switch off the on/off switch [1] Fig. 37 Switching off the heating system on the controls (position "0”). This switches off the (Logamatic) boiler and all its components (such as the burner). -
Page 39: 14 8 Heating System Servicing
Servicing work may only be carried out by a trained and certified service technician. If parts are replaced, only Buderus-approved components may be used. A service must be carried out once a year. The results of the serv- ices must be recorded in the servicing and maintenance log. -
Page 40: Cleaning The Boiler
V Check sealing rope on burner door. Replace damaged or hardened gasket cord. You can obtain suitable gasket cord from your local Buderus wholesaler. V Close the burner door and secure with the two hexa- gon-head bolts (tighten to approx. 90 lb ins). Tighten hexagon-head bolts evenly. -
Page 41: Wet Cleaning (Chemical Cleaning)
V Prepare the heating system for operation. 8.3.2 Wet cleaning (chemical cleaning) When wet cleaning, use a Buderus approved cleaning agent appropriate for the degree of soiling (soot or scale). Follow the same sequence as described in Chapter 8.2, page 39 and Chapter 8.3, page 40. -
Page 42: Cleaning The Heat Exchanger System
Heating system servicing Cleaning the heat exchanger system V Remove the rear boiler top panel [2]. V Remove the thermal insulation [1]. Fig. 41 Opening up the heat exchanger system Thermal insulation Rear boiler cover V Undo the quick-release catches [1] for the cleaning access cover [2]. - Page 43 Caution: Risk of system damage from chemical cleaning agents! V When wet cleaning the heat exchanger, use only water or cleaning agents approved by Buderus. V Refit cleaning access cover and gasket. V After completing cleaning, check any con- nections that were disconnected for leaks.
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Page 44: Cleaning The Neutralizer Unit And Trap
Heating system servicing Cleaning the condensate collector Warning: Risk of injury from acid burning! The condensate in the condensate collector and the trap can reach a pH level of 2. V Always wear suitable clothing and protec- tive goggles when cleaning. V Open the condensate collector clean-out cover [1]. -
Page 45: Checking The Air Supply Hose
Heating system servicing Checking the air supply hose V Disconnect the corrugated hose [2] from the burner intake silencer [3] by undoing the special hose clip [1] and check for dirt. V If dirty, clean the corrugated hose [2] with a vacuum cleaner. -
Page 46: Testing Relief Valve
Heating system servicing Caution: Risk of damage to system due to material stresses caused by temperature dif- ferentials. V Only fill the system when cold (the flow temperature at the temperature/pressure gauge should be no more than 100 °F). V Add water through the feed valve. V Bleed the heating system. -
Page 47: 8.11 Inspection And Maintenance Reports
Heating system servicing 8.11 Inspection and maintenance reports V Initial and date the servicing operations completed. The inspection and servicing logs can also be used as copy masters. Service work Page Date:______ Date:______ Date:______ Check general condition of the heating system Visual inspection and function check of the heat- ing system Checking fuel and water-carrying components of... - Page 48 Heating system servicing Date:______ Date:______ Date:______ Date:______ Date:______ Date:______ Date:______ Company Company Company Company Company Company Company stamp/signa- stamp/signa- stamp/signa- stamp/signa- stamp/signa- stamp/signa- stamp/signa- ture ture ture ture ture ture ture Tab. 16 Servicing log (continued) If any condition requiring maintenance work is identified in the course of servicing, that work must be carried out as required.
- Page 49 Heating system servicing On-demand maintenance procedures Page Date:______ Date:______ Date:______ Shutting down the heating system Remove and clean heat exchanger baffles Cleaning heat exchanger heater flue (heating surfaces) and combustion chamber and afterwards refitting heat exchanger baffles in original positions Checking seals/cord gaskets on burner door and burner and replacing as necessary Inspect and clean condensation heat exchanger system, replace gaskets if...
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Page 50: Troubleshooting
Troubleshooting Troubleshooting Two type of fault are distinguished: – Burner faults and – Control and heating system faults. If there is a burner fault, the fault indicator lamp on the burner comes on ( burner documentation). Such faults can generally be reset by pressing the reset button on the burner. -
Page 51: Examples Of Installations
Examples of installations 10 Examples of installations Explanation of abbreviations Return valve or check valve Heating circuit adjuster mixing valve Expansion tank Pressure relief valve air eliminator Heating pump Thermostatic radiator valve zone valves Hot water pump Water compensation pipe (diversion) bypass Tab. - Page 52 Examples of installations Fig. 50 Multiple heating circuits with bypass for heating systems with large water capacity Radiator Boiler bypass Fig. 51 Multiple heating circuits with heating pumps and motorized mixing valve Baseboard Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice.
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Page 53: Spare Parts
The following spare parts are available from BBT. If there Legend for tables 20 and 21: are several Buderus article numbers for one item number, x = no spare part the numbers for the various models are listed in the rele- (x) = component of a set, only available with set vant columns. - Page 54 Glass pane 30x30x3.3mm 7747021876 Inspection window cover Hex-head bolt ISO4017 M6x12 8.8 A3K Pressure testing nozzle M6 SW10 V2 Heat insulation for burner door BE/non-Buderus rating 21/3-34/5 63002401 Available heat insulation components Washer DIN9021 A6.4 A3K Dome-head screw M6x40 Gasket cord GB 14x1650 mm long...
- Page 55 Spare parts Fig. 52 Boiler block and burner door Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice.
- Page 56 Spare parts Boiler outer casing ( Fig. 53) Item no. Description Part number GB125/22 BE G1B25/30 BE GB125/35 BE 3 sections 4 sections 4 sections Burner hood GB125 63046609 Available outer panel components Appliance insignia Logano plus GB125 63045050 Front thermal insulation 12x580x695 G115/G125 63025265 Hex-head bolt ISO4017 M8x12-8.8 Cross-member 1.25x108x537 G115/G125...
- Page 57 Spare parts Item no. Description Part number GB125/22 BE G1B25/30 BE GB125/35 BE 3 sections 4 sections 4 sections Outer panel fixings G115, G125 Contents: 17 flathead bolts ea. 3.9x9.5-A3T 3 self-tapping screws C-St3.9x13-A3T 1 Dome-head screw DIN7985-M6x16-4.8-A3T 2 push-fit catches 4 hex-head bolts ISO4017 M8x12-8.8 63031847 1 hexagon nut DIN555 M8 5...
- Page 58 Spare parts 7747102255.ab.RS-Verkleidung GB125 US Fig. 53 Boiler jacket Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice.
- Page 59 Spare parts Heat exchanger WT (Fig. 54) Item no. Description Part number GB125/22 BE G1B25/30 BE GB125/35 BE 3 sections 4 sections 4 sections Heat exchanger WT 7747102256 H/E system GB125 18-22 7747015854 H/E system GB125 30-35 7747015855 Available spare parts Flue box GB125 18-22 7747007457 Flue box GB125 30-35...
- Page 60 Spare parts Item no. Description Part number GB125/22 BE G1B25/30 BE GB125/35 BE 3 sections 4 sections 4 sections Trap set GB125 V2 7747020450 Inlet connection, trap set GB125 7747010787 Extension G1 1/4x120 GB125 7747104888 Seal D44x3 set of seals 7747015460, see kit seal set, O-rings Trap fixing bracket GB125...
- Page 61 Spare parts 7747102256.ab.RS-Wärmetauscher WT Fig. 54 Heat exchanger WT Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice.
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Page 62: Wiring Diagrams
Wiring diagrams 12 Wiring diagrams Fig. 55 Wiring diagram Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice. -
Page 63: Index
Index Index ....................Ambient conditions Main shut-off valve ............Main switch ..........Maintenance, regular ...... Moving with boiler trolley/sack truck ........... B-Kit components ............Boiler model ............Boiler output ......................... Boiler room On/off switch ................Burner door, reversing On-site testing pressure ...... - Page 64 Bosch Thermotechnology Corporation 50 Wentworth Avenue Londonderry, NH 03053 U.S.A. Tel. 603-552-1100 Fax 603-584-1681 www.buderus.net Products manufactured by BBT Thermotechnik GmbH D-35573 Wetzlar www.buderus.de Bosch Thermotechnology Corporation reserves the right to make changes without notice due to continu- ing engineering and technological advances.