Buderus Logamax plus GB142-24 Installation And Servicing Instructions

Buderus Logamax plus GB142-24 Installation And Servicing Instructions

Condensing gas heater
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7212 9700 – 12/2004 US/CA(EN)
Installation and Servicing instructions
Condensing gas heater
Logamax plus GB142-24/30/45/60
Please read thoroughly before installing and servicing
For registered installers
CAUTION!
Before putting the appliance into operation read this manual carefully.
WARNING!
Improper installation, adjustment, alteration, service or maintenance
can cause injury, loss of life or property damage. Refer to this manual.
For assistance or additional information consult a qualified installer,
service agency or the gas supplier.
CAUTION!
The operating manual is part of the documentation that is delivered to
the installation's operator. Go through the information in this manual
with the owner/operator and make sure that he or she is familiar with
all the necessary operating instructions.
Warning: If the information in these instructions is
not followed exactly, a fire or explosion may result
causing property damage, personal injury or death.
– Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
– What to do if you smell gas
• Do not try to light any appliance
• Do not touch any electrical switch; do not use any phone in
your building.
• Immediately call your gas supplier from a neighbor's phone.
Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
– Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
Notice:
This manual must be retained for future reference.

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Summary of Contents for Buderus Logamax plus GB142-24

  • Page 1 7212 9700 – 12/2004 US/CA(EN) For registered installers Installation and Servicing instructions Condensing gas heater Logamax plus GB142-24/30/45/60 CAUTION! Before putting the appliance into operation read this manual carefully. WARNING! Improper installation, adjustment, alteration, service or maintenance can cause injury, loss of life or property damage. Refer to this manual.
  • Page 2 Updating of documentation Please contact us if you have any suggestions for improvements or corrections. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 3: Table Of Contents

    ....36 We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 4 Index....... 97 We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 5: Safety And General Instructions

    – If you find any defects, you must inform the owner of the system of the defect and the associated hazard in writing. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 6: Observe These Instructions For Heating System Water

    This may damage the heat exchanger or affect its operation. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 7: Regulations And Guidelines

    We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 8: Product Description

    11: "Chimney sweep" button pos. 12: "Reset" button Switching the heating system on and off We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 9: Dimensions And Connections

    4” (100 mm) to the right, 4” (100 mm) at the top and 6” (150 mm) to the left. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 10 4” (100 mm) to the right, 4” (100 mm) at the top and 6” (150 mm) to the left. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 11: Packaging And Transportation

    The user’s instructions (in a special format) is located in the appliance drawer We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 12: Installation

    Fig. 6 Removing the transport safety clamps We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 13: Making The Gas Connection

    .60 (42 mbar) and a inlet gas pressure of .5 psi (35 mbar) or less and a pressure drop of .3 inches W.C. (20 mbar) We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 14: Fitting The Heating Circuit Supply And

    Connect the expansion tank to the system. Connect the pipes so that they are free from strain. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 15 We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 16 8: primary pump pos. 3: drain valve pos. 4: DHW pump We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 17: Combustion Air And Ventilation Openings

    – Do not store flammable materials and liquids in the immediate vicinity of the appliance. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 18: Installation Of The Flue Gas Adapter

    Adhere to national code requirements. Fig. 13 Connecting the flue gas adapter We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 19 Chapter “7 Connecting the condensate water drain” on page 23 We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 20 Fig. 16 Vertical venting system (room air only) Fig. 17 Vertical parallel venting system (sealed combustion) We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 21 100 feet (GB142-24/30/45) and 60 feet (GB142-60) maximum requirement each for the intake and exhaust piping. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 22 The minimum covering wall thickness is 1". The maximum covering wall thickness is 16". We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 23: Connecting The Condensate Water Drain

    Fig. 21 Condensate water drain Install a neutralization unit if required by the local code. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 24: Electrical Connections

    Netz white main connection 120V 60Hz Connection for an external DHW tank sensor We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 25 7 – 9 (see circuit diagram) does not exceed 250 W. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 26 Wiring errors can cause improper and dangerous operation. Fig. 25 Electric circuit diagram We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 27: Start-Up Procedure

    Set the thermostat or other operating control to lowest setting. Close main gas shut off f f valve. 708.375A - 2172B We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 28: Testing For Gas Leaks

    (see subsection 10.3.2 and 10.3.3). Factory setting is "0". We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 29: Filling The Condensate Trap

    Remove the hose and tighten the screw plug again. Fig. 27 Venting the gas supply conduit We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 30: Checking The Combustion Air/Flue Gas

    ½ psi (3.5 kPa). Fig. 28 Measuring the inlet gas pressure We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 31: Checking And Adjusting The Gas/Air Ratio

    Checking and adjusting the gas/air ratio Switch off the heating system using the main switch. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 32 Switch on the heating system using the main switch. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 33: Carrying Out A Tightness Test In Operating Conditions

    9.12 Measuring the ionization current Switch off the heating system using the main switch. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 34 Switch on the heating system again using the main switch. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 35: Installing The Casing

    Hand over the technical documents. Fig. 35 Installing the casing We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 36: Bc10 Basic Controller

    Table 8 LED indication We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 37: Displaying The Heating System Status

    Standard display for this operating condition. This display appears after 5 minutes if no button is pressed. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 38 Standard display for this operating condition. This display appears after 5 minutes if no button is pressed. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 39: Carrying Out Additional Tasks

    (for more than 5 seconds) until the decimal point in the status display flashes. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 40: Configuring The Appliance

    (higher values) or the "Reset" button (lower values). Press the "Service" button to confirm the setting. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 41: Setting The Dhw Temperature Value

    ". The heating system has been factory-set to a pump post-purge period of 5 minutes. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 42 On thermostat only systems a 5 to 10 minute post-purge setting is recommended to purge heat from the appliance. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 43: Shutting Down The System

    Close the main shut-off valve. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 44: Inspection

    Check all gas and water pipes for signs of corrosion. Replace any pipes that are corroded. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 45: Internal Tightness Testing

    12.11 Checking venting systems Check air intake and flue gas for obstruction or damage. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 46: Maintenance

    Fig. 39 Cleaning the burner cover, gas/air distributor plate, orifice plate and burner We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 47 Re-assemble all parts in reverse order of Fig. 42 Condensate trap disassembly. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 48: Checking And Adjusting The Gas/Air-Ratio

    13.2 Checking and adjusting the gas/air- ratio See chapter 9.8 "Checking and adjusting the gas/air ratio", page 31. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 49: Servicing

    Remove the cover from the connection box (fig. 45). Fig. 45 Removing the cover from the connection box We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 50: Checking The Fan Unit; 120 Vac Control

    Fig. 47 Checking for 120 VAC voltage plug contacts (blue and brown) (see fig. 47). We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 51: Checking The Fan Unit; Supply Cord (120 Vac)

    Set the main switch on the BC10 to "1" (On). Fit the casing. Fig. 49 UBA3 installation base We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 52: Checking The Fan Unit; Tacho Cable

    (see fig. 51, pos. 1). Fig. 51 Disconnect the cable plug from the fan unit We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 53: Checking The Supply/Return/Safety/ Hot-Water Temperature Sensors

    Set the main switch on the BC10 to "1" (On). Fig. 54 Checking the safety sensor We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 54: Replacing The Supply/Return/Safety Sensors

    Restore the plug and socket connection. Open the maintenance shut-off valves. Purge air from the appliance. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 55: Checking The Supply/Return/Safety Sensors Cable

    (see fig. 57, pos. 2). Disconnect the plug and socket connection of the cable for the sensor. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 56: Checking The Hot Surface Ignitor; Control

    Set the main switch on the BC10 to "1" (On). We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 57: Checking The Hot Surface Ignitor; Resistance

    (see fig. 60, pos. 2). Set the volt-ohm-multiammeter to "Resistance testing". We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 58: Replacing The Hot Surface Ignitor

    Fig. 63 Replacing the hot surface ignitor Restore the plug and socket connection of the hot surface ignitor. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 59: Testing The Ionization Current

    Set the main switch on the BC10 to "1" (On). We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 60: Checking The Ionization Electrode; Cable

    UBA3 Fig. 67 Testing the earth connection circuit of the ionization electrode (2) We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 61: Checking The Ionization Electrode; Replace If Necessary

    Set the main switch on the BC10 to "1" (On). Fig. 70 Checking the ionization electrode We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 62: Checking The Gas Control Valve; Cable

    Set the main switch on the BC10 to "0" (Off). Fig. 73 Removing the gas control valve plug Remove the casing. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 63 Fig. 75 Testing the cable between the gas control valve and the UBA3 installation base Fig. 76 UBA3 installation base We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 64: Ohming Out The Gas Control Valve

    Fig. 78 Testing the resistance on the gas burner ass’y (1) Fig. 79 Testing the resistance on the gas burner ass’y (2) We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 65: Replacing The Gas Control Valve

    (see fig. 82, pos. 1). Fig. 82 Disconnect the cable plug from the fan unit We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 66 Loosen three screws on the gas control valve (see fig. 85, pos. 1). Fig. 85 Loosening the screws We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 67 Fit the casing. Fig. 88 Gas shut-off valve closed (1), gas shut-off valve open (2) We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 68: Checking The Control Unit; Connections To The Appliance

    Set the main switch on the BC10 to "1" (On). We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 69 10: main connection 120V 60Hz (connection color white) pos. 11: Fuse holder We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 70: Transformer; Checking And If Necessary

    (see fig. 95, pos. 1, 2, 3 and 4). Fig. 95 Pulling the external connection board plug We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 71 Remove the transformer shield (see fig. 98). Fig. 98 Removing the transformer shield We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 72: Replacing

    (see fig. 101). Fig. 101 Removing the plastic cover of the automatic air purging system We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 73: Burner; Replacing

    Close the gas shut-off valve (see fig. 104, pos. 1). Fig. 104 Gas shut-off valve closed (1), gas shut-off valve open (2) We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 74 Loosen the union nut of the gas control valve (see fig. 107, pos. 1). Fig. 107 Loosening the gas control valve We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 75 Re-assemble all other parts in reverse order of disassembly. Fig. 110 Installing the burner We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 76: Sight Glass; Replacing

    Set the main switch on the BC10 to "1" (On). We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 77: Condensate Trap; Replacing

    Set the main switch on the BC10 to "1" (On). We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 78: Heat Exchanger; Replacing

    (see fig. 117, pos. 1). Fig. 117 Disconnecting the cable plug from the fan unit We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 79 Remove the burner (see fig. 120, pos. 4). Fig. 120 Removing the burner We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 80 Fig. 123 Undoing the plug and socket connection of the safety sensor We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 81 Dismantle the mounting plate (see fig. 126, pos. 3). Fig. 126 Replacing the hot surface ignitor We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 82 (see fig. 129, pos. 1). Fig. 129 Opening the latches of the condensate collector We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 83 (see fig. 132, pos. 1). WARNING! Water will be released. Fig. 132 Removing the supply pipe We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 84 Fig. 135 Removing the flue gas adapter We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 85: Uba3; Replacing

    Fig. 138 Dismantling the UBA3 Set the main switch on the BC10 to "1" (On). We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 86: Converting The Appliance To Propane Or High Altitude Conversion

    5.35 (0.209) 4.05 (0.158) Fit the casing again. Table 14 Gas orifice diameter We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 87: Appendix

    5 seconds, the heating system is returned to its switch-on condition) Table 15 Normal operating messages We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 88: Error Messages

    Supply sensor affected by short circuit. System faults Loose contact or faulty supply sensor. Internal UBA fault. We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 89: Technical Specifications

    Table 16 Technical specifications If the heating capacity is limited to max. 80% (L80). We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 90 The venturi article number is marked on both clips of the venturi (see fig. 140, pos. 1 and 2). We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 91: Start-Up Report

    18. Inform the owner; hand over the technical documents Confirm proper start-up Company stamp/signature/date We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 92: Inspection Report

    15. Confirm proper inspection Company Company Company stamp/signature stamp/signature stamp/signature We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 93: Maintenance Report

    _______________ % _______________ % Confirm proper maintenance Company stamp/ Company stamp/ Signature Signature We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 94: Spare Parts

    18 Spare parts Below is a list of the spare parts for this appliance. Look up the position number in the exploded view drawing on the next two pages for the illustration. Spare parts may be ordered from Buderus Hydronic Systems. Pos.
  • Page 95 Spare parts Exploded view Logamax plus GB142-24/30 We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 96 Spare parts Exploded view Logamax plus GB142-45/60 We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 97: Index

    Hot-water target value ..... . . 41 We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 98 Notes We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 99 Notes We reserve the right to make any changes due to technical modifications! Buderus Hydronic Systems • http://www.buderus.net Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004...
  • Page 100 Buderus Heiztechnik GmbH, 35573 Wetzlar http://www.heiztechnik.buderus.de email: inof@heiztechnik.buderus.de Buderus Hydronic Systems 50 Wentworth Avenue Londonderry, NH 03053 Tel: 603-552-1100 • Fax: 603-421-2719 www.buderus.net Buderus Hydronic Systems, reserves the right to make changes without notice due to continuing engineering and technological advance...

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