Buderus Logano plus GB312 Installation Manual
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Buderus Logano plus GB312 Installation Manual

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See also: Instruction and Installation Manual
Installation and servicing
instructions
Logano plus GB312
Gas condensing boiler
CAUTION!
Observe the safety instructions of this installation and
maintenance manual before placing the boiler in oper-
ation.
DANGER!
If installation, adjustment, modification, operation or
maintenance of the heating system is carried out by
an unqualified person, this may result in danger to life
and limb or property damage. The directions of this
installation and maintenance manual must be fol-
lowed precisely. Contact a qualified service com-
pany, service provider or the gas company 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 instruc-
tion in this manual with the owner or operator of the
heating system to ensure that they are familiar with all
information required for operation of the heating sys-
tem. If the boiler will be installed in Massachusetts, it
must be installed by an installer or dealer who is reg-
istered there.
For qualified technicians
Please read carefully prior
to installation and mainte-
nance

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Summary of Contents for Buderus Logano plus GB312

  • Page 1: Installation And Servicing Instructions

    If the boiler will be installed in Massachusetts, it must be installed by an installer or dealer who is reg- istered there. Logano plus GB312 For qualified technicians Please read carefully prior to installation and mainte-...

  • Page 2: Table Of Contents

    6.9.2 Connecting the boiler to the heating system 7.17 Checking for leaks during operation 6.9.3 Installing B-Kit 7.18 Fitting outer casing components 6.9.4 Connecting the central heating supply Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 3 Examples of Installations 14.1 Boiler, low-loss header, AM10 14.2 Boiler, low-loss header, Logamatic 4000 14.3 2 Boilers , low-loss header, Logamatic 4000 with FM 456 Module Index Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 4: Symbols

    Danger of explosion of flammable gases. V Any work on components that carry gas may only be carried out by an approved heating contractor. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 5: Explanation Of Symbols

    V Explain to the customer how the boiler works and how to operate it. V Inform the customer that he/she must not carry out any alterations or repairs. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 6: Details Of The Product

    Controls and Safety Devices for Automatically ing Code. Fired Boilers, ANSI/ASME CSD-1. Carbon monoxide detectors must be installed as speci- fied by the local regulations. The boiler must be serviced annually. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 7: Massachusetts Installations Only

    The sign shall read, in print size no less than one-half (1/2) inch in size, "GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS". Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 8: Notes On Installation And Operation

    Unsuitable heating system water promotes sludge and corro- sion formation. This can result in heat ex- changer malfunction and damage. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 9: Product Description

    The programming unit monitors and controls all electrical boiler components. The boiler heat exchanger transfers the heat generated by the burner to the heating water. The thermal insulation reduces radiant and standby heat loss. Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 10 Fig. 2. Many other functions for the convenient control of your heating system are available with a programming unit (such as the RC35*). * Available separately Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 11: Package Contents

    Refer to the catalog for precise details of suitable acces- sories. The following accessories are available from the trade: – Flue system – Air supply system – Programming unit, e.g. RC35 Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 12: Dimensions And Specifications

    Inches 12.2 AL = Diameter of combustion air pipe (bal- Inches 3.94 anced flue only) Connections VK and RK 2½" NPT Tab. 1 Dimensions and connection sizes Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 13: Specifications

    Maximum permissible fuse rating Appliance dimensions and weight Transport clearance dimensions, width x depth x Inches 34x25x60 42x25x60 50x25x60 height Weight Tab. 2 Specifications Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 14 Tab. 3 Gas flow rate (based on gas temperature of 60 °F and air pressure of 30 ins Hg) The boiler is factory-set for: – Natural gas (gas type A) Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 15: Transporting The Boiler

    V Slightly lift the side panels and remove. Fig. 5 Removing front and side panels Front panel Side panel Locking screw Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 16 V Carry the boiler to the installation site. 7 747 010 720-07.1RS Fig. 7 Transporting the boiler using pipes Positions for securing the boiler against slipping Pipe (for carrying) Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 17: Transporting The Boiler On Rollers

    7 747 010 720-08.1RS Fig. 8 Transporting the boiler on rollers (dimensions in inches) Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 18: Installing The Boiler

    V Do not store or use such substances in the boiler room. V Avoid excessive dust accumulation (build- ing dust) on or near the boiler. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 19: Recommended Wall Clearances

    V Level the boiler horizontally by turning the adjustable feet and using a spirit level. 7 747 010 720-10.1RS Fig. 10 Leveling the boiler Adjustable feet Spirit level Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 20: Openings For Combustion Air Supply And Venting

    V Do not use or store easily combustible ma- terials (paper, lace curtains, clothing, thin- ners, paints, etc.) near the boiler. V Maintain a clearance of 16 inches from the boiler. Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 21 4000 Btu/h of the total burner output of all gas- fired appliances inside the closed room. The attic must be ventilated at both ends of the house. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 22: Installing The Boiler

    Manufac- turer Flue system IPEX System 636 CPVC, System 636 PVC Tab. 7 Recommended flue system for Canada Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 23 V Check seams and joints for leaks. V Have the entire flue system checked once a year by a qualified heating contractor. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 24: Connecting The Flue Pipe To The Boiler

    Warning: Risk of slipping hazard due to ice formation. V Do not position air intake and flue piping directly above footways. Dripping conden- sate can result in ice formation on the foot- way. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 25: Installing The Wall Exit For A Horizontal Flue

    (observe minimum horizontal separation of 4 ft). 7 747 010 720-13.1RS Fig. 13 Wall penetration Wall penetration Flue pipe End piece of flue pipe (t-piece or 90°-elbow) External cover plate Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 26: Installation Of The Roof Penetration Of A Vertical Flue Systems

    We recommend that the air supply pipe di- ameter matches the flue pipe diameter. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 27: Installing The Roof Exit For The Air Pipe

    Flue outlet Minimum horizontal distance from air intake of another appliance = 10 ft, minimum distance from own air intake for directly vented appliances = 4 ft. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 28: Design Of Flue And Air Pipe For Direct Vent Operation

    T-piece or 90° elbow facing downwards) Air intake terminal (90° elbow facing vertically down- Air inlet (90° elbow or T-piece) wards) External wall External wall Roof Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 29: Connecting The Heating System

    Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 30: Connecting The Boiler To The Heating System

    V Fit and seal the temperature/pressure gauge in the connection provided ( Fig. 24). Any additional safety devices required can be fitted and sealed in the remaining connections. Follow the manu- facturers' instructions. Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 31 V Do not store flammable materials or liq- uids in the immediate vicinity of pipes that carry hot water. V Maintain a clearance of 2" from pipes car- rying hot water. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 32: Connecting The Central Heating Supply

    A DHW Tank can be connected to the connections VK (after the B-kit) and RK. The required cylinder charging pump can be controlled by the control unit MC10 + BC10 (see instructions MC10 + BC10). Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 33: Installing The Condensate Drain

    Danger: Risk of fatal injury from poisoning. V The boiler's internal trap must be used, make sure that the condensate from the flue system drains correctly. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 34: Filling The Heating System And Checking For Leaks

    V Open the mixing and shut-off valves on the heating water (primary) side. Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 35 V Top up with water if the pressure drops as a result of bleeding the system. V Remove the hose from the boiler fill and drain valve. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 36: Connecting The Fuel Supply

    V Cover the areas at risk before carrying out the leakage test. V Do not spray leak detector onto cable conduits, plugs or electrical connecting leads or allow it to drip onto them. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 37: Installation At High Altitudes

    Use only sealant that is resistant to corrosion by LPG for the pipe connections. The sealant must be applied spar- ingly to the external thread of the pipe connections. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 38: Electrical Connections

    V Fit a power switch near to the boiler. O F F 7 747 010 720-80.1RS Fig. 31 On/off switch Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 39 Danger: Fire hazard from hot boiler compo- nents. Hot components may damage electrical wir- ing. V Ensure that all wiring is routed through the cable conduits provided or on the boiler insulation. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 40: Leveling The Boiler

    V Screw the adjustable feet in or out so as to level the boiler with the aid of a spirit level. V Retighten the nuts. 7 747 010 720-79.1RS Fig. 36 Leveling the boiler Screw Spirit level Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 41: Recommissioning The Heating System

    V Inspect flue and combustion air piping and the vents for combustion air supply and ventilation Section 5, page 20). Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 42: Checking The Operating Pressure

    8.7 psi. 7 747 010 720-25.1RS Fig. 38 Topping up heating water/draining via the boiler fill & drain valve Boiler fill & drain valve Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 43: Checking For Leaks

    The burner may only be used with the type of gas fuel specified for it. V Check that the actual gas supplied match- es the gas type specified on the rating plate. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 44: Checking The Air Supply/Ventilation And Flue Pipe Connection

    7 747 010 720-53.3RS Fig. 39 Checking the air inlet diaphragm Air inlet diaphragm Air inlet socket High gas pressure switch (available separately) Low gas pressure switch (available separately) Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 45: Purging The Gas Pipe

    V Switch off the Logamatic 4000 programming unit. V Use the RC35 programming unit. V Continue commissioning procedure as described in Section 7.9.3. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 46: Boiler Intended To Be Used With Rc35

    °F. 7 747 010 720-38.2RS Fig. 42 Switching on the basic control unit Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 47: Conducting A Flue Gas Test

    The monitor readings are displayed as a list, i.e. turning the selector scrolls down to more readings. These menus enable you to read off the current boiler out- put (set/actual) and the flame ionization current. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 48: At Maximum Output

    V Read off output on RC35 or using a Service Key. V Wait until the output drops to 30%. 7 747 010 720-42.2RS Fig. 45 Setting medium output Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 49: At Maximum Output

    – Carbon dioxide content (CO ) or oxygen content – Carbon monoxide content (CO) 7 747 010 720-60.1RS Fig. 47 Recording measured values Recommended location for testing point on flue pipe Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 50: Switching The Status Display On The Bc

    Levels above 100 ppm indicate incorrect burner adjust- ment, incorrect appliance settings, dirt in the burner or heat exchanger or burner faults. V Identify and eliminate the fault. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 51: Function Checks

    (when flame is lit) should be at least 3 μA. V Switch the RC35 back to operating mode. V Close the flap on the RC35. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 52: Measuring The Gas Supply Dynamic Pressure

    V Do not spray leak detector onto cable en- tries, plugs or electrical connecting leads. Do not allow it to drip onto them either. V To avoid corrosion, carefully wipe off the leak detector afterwards. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 53: Informing The Owner/Operator And Handing Over Technical Documentation

    Hand over the technical documentation to the owner/ operator and then both sign the commissioning log Section 7.20, page 54). Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 54: Commissioning Log

    16. Informing the end user and handing over technical docu- mentation 17. Correct commissioning confirmed by installer Signature:_______________________ 18. Signature of operator Signature:_______________________ Tab. 14 Commissioning log Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 55: Shutting Down The Heating System

    V Turn off the main isolating valve. V Disconnect the heating system from the electrical power supply by means of the emergency stop switch or the appropriate circuit-breaker. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 56: Heating System Servicing

    The results of the services must be recorded in the servicing and maintenance log. Spare parts can be ordered from Buderus us- ing the parts list. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 57: Preparing The Boiler For Servicing

    V Replacing any corroded pipes. V Checking the charge pressure of the diaphragm expan- sion vessel. V Check the concentration of possibly used additives in the water annually. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 58: Checking The Flue System Inc. Combustion Air Supply, Inlet And Outlet Air Vents

    V Record the amount of water added in the operator's log. Read off the operating pressure from the pro- grammer (e.g. "P15" means 15 psi). V Refit boiler front panel ( Fig. 5, page 15). Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 59: Measuring The Carbon Dioxide Content

    This turns on the entire heating system. The status dis- play on the basic control unit lights up and shows the current boiler water temperature in °F. Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 60 DIAGNOSIS/ DIAGNOSIS|MON.READING MONITOR READING menu. Boiler/Burner V Turn the rotary selector counter-clockwise to domestic hot water heating circuit 1 select Boiler/Burner (indicated by bus users Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 61: Cleaning The Burner And Heat Exchanger

    V Remove the trap from condensate pan drain outlet. V Place a bucket under the condensate pan outlet. 7 747 010 720-69.2RS Fig. 56 Removing the trap Trap Condensate pan Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 62 V Carefully draw the burner forwards to remove it. 7 747 010 720-27.1RS Fig. 58 Removing the burner from the heat exchanger Front hex-head bolt Rear hex-head bolt Fixing nuts Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 63 7 747 010 720-29.2RS Fig. 60 Dry cleaning the heat exchanger Long cleaning blade (available separately) Short cleaning blade (available separately) Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 64 Cleaning the burner V Blow-clean the burner rods and manifold from inside and outside with compressed air. 7 747 010 720-72.1RS Fig. 63 Cleaning the burner Burner rods Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 65 Fig. 64 Checking electrode position Burner rod Ionization electrode Ignition electrode 7 747 010 720-73.2RS Fig. 65 Adjusting the electrode bracket Screw Electrode bracket Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 66 V Check the flat gasket in the flange and replace, if nec- essary, after completion of servicing and maintenance work. 7 747 010 720-75.1RS Fig. 66 Checking that the gasket is in place Indicator window on flange Flange Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 67: Checking Gas Valve For Leaks

    Carefully build up a testing pressure of 7 inches W.C. using the hand pump H and then turn off the isolating valve F on the testing apparatus. Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 68 Manual isolating valve (testing apparatus) Manual isolating valve (testing apparatus) Hand pump (testing apparatus) Pressure tester (testing apparatus) Low pressure switch (available separately) 1, 2, 3, 4, P Pressure testing points Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 69: Checking For Leaks During Normal Operation

    V Refit outer casing panels ( Fig. 49, page 53). 9.10.3 Confirming servicing/maintenance V Sign the servicing and maintenance log in this manual Section 9.11, page 70). Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 70: Servicing And Maintenance Logs

    Check that the programming unit settings – are as required (see programming unit docu- mentation) Final check of servicing work – Confirmation of properly completed servicing Company stamp/Date/Signature Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 71 _______ μA _______ μA _______ μA If any condition requiring maintenance work is identified in the course of servicing, that work must be carried out as required. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 72: Troubleshooting

    V If that is not possible, protect the heat- ing system against freezing by draining the heating system and hot water pipes from the lowest point. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 73: Operating And Fault Messages

    Start-up of the fan start up. has to be detected before the sequence can be continued. Tab. 16 Operating codes1) V = locking; B = inhibiting; BC = operating code Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 74 > 27 °F, 15 K. meter. Check if cast section is blocked with dirt. Tab. 16 Operating codes1) V = locking; B = inhibiting; BC = operating code Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 75: Fault Messages

    (e.g. only with 2- fitted correct way boiler temperature boiler systems). round. limiter). Tab. 17 Fault messages 1) V = locking; B = inhibiting; BC = operating code Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 76 Replace SAFe if there are discrep- ancies. Tab. 17 Fault messages 1) V = locking; B = inhibiting; BC = operating code Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 77 SAFe all required data is SAFe and MC10. supplied by the SAFe. Tab. 17 Fault messages 1) V = locking; B = inhibiting; BC = operating code Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 78 Tab. 17 Fault messages 1) V = locking; B = inhibiting; BC = operating code Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 79 Replace gas valve. contact with with electrodes. Check function of gas valve. Tab. 17 Fault messages 1) V = locking; B = inhibiting; BC = operating code Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 80 (to be continued on next page) Tab. 17 Fault messages 1) V = locking; B = inhibiting; BC = operating code Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 81 Check wiring and proper contact of power plug on MC10/SAFe. Tab. 17 Fault messages 1) V = locking; B = inhibiting; BC = operating code Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 82 Tab. 17 Fault messages 1) V = locking; B = inhibiting; BC = operating code Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 83 SAFe must fault is eliminated. be replaced. Tab. 17 Fault messages 1) V = locking; B = inhibiting; BC = operating code Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 84 (voltage < 0.5 V). sure sensor. Replace water Check water pres- pressure sensor. sure sensor. Tab. 17 Fault messages 1) V = locking; B = inhibiting; BC = operating code Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 85 There is a malfunc- the SAFe. tion on the SAFe. Tab. 17 Fault messages 1) V = locking; B = inhibiting; BC = operating code Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 86 Replace SAFe if there are discrep- ancies. Tab. 17 Fault messages 1) V = locking; B = inhibiting; BC = operating code Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 87 If all checks OK, replace SAFe. Tab. 17 Fault messages 1) V = locking; B = inhibiting; BC = operating code Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 88: Troubleshooting Safety Sequence/Pressure Switch

    ON again on controller! Does Fault 8L / 579 recur? Replace low pressure switch (available separately) 7 747 010 719-94.2RS Fig. 69 Fault elimination sequence 8L/579 Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 89 Flue pressure Check flue pipe for monitor cuts out! blockage! 7 747 010 719-93.3RS Fig. 70 Fault elimination sequence 8Y/590 Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 90 Replace SAFe Perform reset! Does burner start up? pressure switch. Perform reset! Replace SAFe! Does burner start up? 7 747 010 720-58.4RS Fig. 71 Fault elimination sequence 8Y/591 Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 91: Sensor Characteristics

    All temperature sensors on the GB312 have Resistance in kΩ the same sensor characteristic. Two identical "dual sensors" fitted in the sen- sor housing are used as high limit tempera- ture sensors. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 92: Spare Parts

    Spare parts 12 Spare parts The following replacement parts are available from Bosch Thermotechnology Corp. Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 93 See below for gasket set for GB312 boiler heat exchanger Trap GB312/SB barrier height 145 63037864 Trap with 145mm barrier height V2 63043767 Components: Elbow 90 DN32 Tab. 18 Boiler heat exchanger Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 94 Gasket set for boiler GB312 63037291 Components: O-ring Flat gasket D31/47x6 Shore 70EPDM Glass fabric tape D48/63x0.25 PTFE coated Gasket D=40x2 SIL24 Tab. 18 Boiler heat exchanger Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 95 Spare parts 7747101916-02-Kesselblock GB312 USA Fig. 73 Boiler heat exchanger Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 96 Fascia panel G244/GB312 63037441 Cable conduit GB312 63038445 Panhead screw ST3.9x40 Panhead screw ST3.9x9.5 Blind rivet 4x8 St/St Cover panel US 7747018781 Tab. 19 Boiler outer casing Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 97 Spare parts p l u 7747101917-01-Verkleidung GB312 USA Fig. 74 Boiler outer casing Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 98 Cartridge fuse 6.3x32 10AT 125V/US a pack of 7747026156 BC10 basic control unit for UBA3 "US" 63033278 Outdoor temperature sensor FA 5991374 Module EM10 US 18358 Tab. 20 Heat insulation and programmer Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 99 Spare parts E co A ut R es A ut 7747101918-00-Wärmeschutz und Regelung GB312 USA Fig. 75 Heat insulation and programmer Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 100 Note: if required order set of filter tubes NE 0.1 V2 Set of filter tubes NE 0.1 V2 (inserted) 63038062 Inlet/outlet connection NE 0.1 63015904 Hose 19x3.5x1000mm (condensate inlet) (not 7115124 illustrated) Tab. 21 Neutralizer Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 101 Spare parts 1020944-01-Neutralisationseinrichtung NE 0,1 Fig. 76 Neutralizer Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 102 7747016631 Fan unit VM312-200 US EG 7747016632 Fan unit VM312-240 US EG 7747016633 Fan unit VM312-280 US EG 7747016634 Tab. 22 Burner variants, rating plate VM312 US Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 103 Spare parts Leistung Ser.-Nr. 63038106-00-5194-000042 0031511501 7747101921-03-Brennervarianten, Typenschild VM312 US Fig. 77 Burner variants, rating plate VM312 US Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 104 Thermofix ceramic adhesive tube 115 g 2037312 Burner rod gasket VM312 63036119 Hex nut EN1661 M5 10 A3K with serrated 5834400 washer Tab. 23 Burner rods, heat shield VM312 US Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 105 Spare parts 7747101922-01-Brennstab, Wärmeschutz VM312 US Fig. 78 Burner rods, heat shield VM312 US Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 106 Inspection window glass, Tempax 5447620 30x30x3.3mm Inspection window seal Hex-head bolt DIN6921 M8x12 (12 off) 63036122 Burner bracket Burner bracket seal VM312-12mm 63046223 Tab. 24 Manifold VM312 US Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 107 Spare parts 7747101923-01-Verteilerrohr VM312 US Fig. 79 Manifold VM312 US Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 108 Fan ebm G1G170-AB 120V60Hz 7747016669 Available spare part: Hex-head bolt DIN6921 M8x12 63036122 Burner bracket seal VM312-12mm 63046223 Burner bracket Tab. 25 Igniter system, fan VM312 US Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 109 Spare parts 7747101924-03-Zündung/Gebläse VM312 US Fig. 80 Igniter system, fan VM312 US Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 110 7747016670 Comprising: Compensation lead VM312 US Union, Honeywell 5/4 Gas orifice D17 SW24 VM312 EG 7747026085 Venturi gasket VM312 63040179 Tab. 26 Air inlet, venturi VM312 US Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 111 Spare parts 7747101925-02-Zuluft, Venturi VM312 US Fig. 81 Air inlet, venturi VM312 US Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 112 Ball valve DN25 RUBS92F41 1" 7747016685 Ball valve DN32 RUB S92G41 11/4" 7747016688 SAFe Pressure switch 7747021498 Tab. 27 Gas valve VR4730, gas connecting pipe VM312 US Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 113 Spare parts 7747101926-03-Gasarmatur VR4730, Gasanschlussrohr VM312 US Fig. 82 Gas valve VR4730, gas connecting pipe VM312 US Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 114 Connecting lead with grommet, boiler sensor/ 63039214 SAFe BE Data lead, SAFe/MC10 63034190 Connecting lead, solenoid valve 1/burner UL 7747016588 Tab. 28 Safe 40 with connecting lead VM312 US Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 115 Spare parts 7747101927-03-Safe 40 mit Anschlussleitungen VM312 US Fig. 83 Safe 40 with connecting lead VM312 US Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 116: Boiler Internal Wiring Diagram

    Boiler internal wiring diagram 13 Boiler internal wiring diagram Fig. 84 Boiler internal wiring diagram, gas boiler GB312 USA/CD Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 117: Examples Of Installations

    Circulation pump Thermostatic valve Tab. 29 Legend Fig. 85 Example of installation: Logano plus GB312, low-loss header, AM10. Schematic diagram, not necessarily rep- resentative of complete system. PH = Differential pressure controlled pumps. The low-loss header (WH) should be fitted as close as possible to the boiler.

  • Page 118: Boiler, Low-Loss Header, Logamatic 4000

    Circulation pump Thermostatic valve Tab. 30 Legend Fig. 86 Example of installation: Logano plus GB312, low-loss header, Logamatic 4000. Schematic diagram, not nec- essarily representative of complete system. PH = Differential pressure controlled pumps. The low-loss header (WH) should be fitted as close as possible to the boiler.

  • Page 119: Boilers , Low-Loss Header, Logamatic 4000 With Fm 456 Module

    Fig. 87 Example of installation: 2 boilers, low-loss header, Logamatic 4000 with FM 456 Module. Schematic diagram, not necessarily representative of complete system. PH = Differential pressure controlled pumps. The low-loss header (WH) should be fitted as close as possible to the boiler. Logano plus GB312 - Technical specifications are subject to change without prior notice...

  • Page 120: Index

    Product description BC10 controls ..........RC35 programming unit ............. Removing the burner ................Safety ............Safety instructions ..........Three-way diverter valve ..............Transport ............Wall clearances ..............Wet cleaning Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 121 Notes Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 122 Notes Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 123 Notes Logano plus GB312 - Technical specifications are subject to change without prior notice...
  • Page 124 Bosch Thermotechnology Corp. 50 Wentworth Avenue Londonderry, NH 03053 Tel. 603-552-1100 Fax 603-584-1681 www.buderus.net Products manufactured by Bosch Thermotechnik GmbH D-35573 Wetzlar www.buderus.de Bosch Thermotechnology Corp. reserves the right to make changes without notice due to continuing engineering and technological advances.

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