Buderus logamax plus gb142-24 Installation Manual

Buderus logamax plus gb142-24 Installation Manual

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7215 0200 – 10/2007 US/CA (en)

Installation instructions

Condensing gas boiler
Logamax plus GB142-24/30/45/60
Please read thoroughly before installing and servicing
For registered installers
CAUTION!
Before putting the boiler 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.
NOTICE!
In the Commonwealth of Massachusetts this boiler must be installed
by a licensed Plumber or Gas Fitter.
Warning: If the information in these instructions is not
followed exactly, a fire or explosion may result caus-
ing property damage, personal injury or loss of life.
– Do not store or use gasoline or other flammable vapors and liquids
in the vicinity of this or any other boiler.
– What to do if you smell gas
• Do not try to light any boiler.
• 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.

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Summary of Contents for Buderus logamax plus gb142-24

  • Page 1: Installation Instructions

    7215 0200 – 10/2007 US/CA (en) For registered installers Installation instructions Condensing gas boiler Logamax plus GB142-24/30/45/60 CAUTION! Before putting the boiler 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. Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 3: Table Of Contents

    10.2.3 Switching the heating system to manual mode ..........42 We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation Instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 4 Index ..............65 Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation Instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 5: Safety And General Instructions

    – The boiler must not be installed on carpeting. – Do not restrict or seal any air intake or outlet openings. We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 6: Observe These Instructions For Space Heating Water

    It can also cause corrosion and reduce life of the heat Beware if you smell gas: there may be an exchanger. explosion hazard! – You must follow Buderus guidelines for boiler water Warning: If the information in these quality. instructions is not followed exactly, a fire –...
  • Page 7: Regulations And Guidelines

    Product approved air intake must be used. Installation shall be in strict compliance with the manufacturer's instructions. A copy of the installation. We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 8: Product Description

    1) ECO mode means that the temperature inside the hot water tank is 140 °F (60 °C), with a hysteresis ( T) of 18 °F (10 °C) instead of 9 °F (5 °C) Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • 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 • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 10 4” (100 mm) to the right, 4” (100 mm) at the top and 6” (150 mm) to the left. Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 11: Packaging And Transportation

    Items supplied with unit The user’s instructions (in a special format) is located in the boiler drawer We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 12: Installation

    Install the wall bracket taking into account the necessary service clearances. Remove the transport safety clamps (fig. 6). Fig. 6 Removing the transport safety clamps Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 13: Making The Gas Connection

    .60 (42 mbar) and a inlet gas pressure of 14 inches W.C. (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 • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 14: Fitting The Heating Circuit Supply And Return Pipes

    Connect the external hot-water tank according to the Installation instructions of the hot-water tank and fittings concerned. Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 15 – 30 Psi (2 bar) discharge pressure. – discharge is ¾ inch (19.1 mm) female in diameter. We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 16 6: shut-off valve pos. 3: drain valve pos. 7: zone pump pos. 8: primary pump Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 17: Combustion Air And Ventilation Openings

    When one expects contaminated combustion air (near swimming pools, chemical cleaning operations and hair salons), sealed combustion operation is recommended. We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 18 Where ducts are used, they shall be of the same cross- sectional area as the free area of the opening to which they connect. Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 19: Installation Of The Flue Gas Adapter (Included In The Scope Of Delivery)

    Screw on the flue gas adapter using six screws (see fig. 14). Fig. 14 Connecting the flue gas adapter We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 20: Installation Of The Exhaust And Air Intake System

    Do not use chimney as a raceway if another boiler or fire- place is vented into or through chimney. Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 21 Fig. 16 Vent and air pipe position (1) of a sealed combustion ment system We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 22 Periodic cleaning of the vent terminal and air-intake screens is mandatory. Fig. 18 Vertical venting system (sealed combustion) Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 23 Fig. 21 Horizontal venting system (sealed combustion) - Fig. 22 Vertical parallel venting system (sealed Situation 2 combustion) - Situation 2 We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 24 Fig. 26 Horizontal venting system (sealed combustion) Fig. 25 Vertical exhaust and horizontal intake venting system (sealed combustion) Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 25 NOTICE For Direct venting properly reassemble and reseal the vent and air-intake systems. We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 26: Connecting The Condensate Drain

    3 and 4. Install a neutralization unit if required by the local code. Fig. 27 Condensate drain Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 27: Electrical Connections

    DHW recirculating pump 120V 60Hz Netz white Main power connection 120V 60Hz Connection for an external DHW tank sensor We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 28 7 – 9 (see circuit diagram) does not exceed 250 W or 5 Amp. Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 29 120 VAC 24 VAC 0 VAC 24 VRAC 24 VRAC 120 VAC Fig. 31 Electric circuit diagram We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 30: Start-Up Procedure

    Set the thermostat or other operating control to lowest setting. Close main gas shut off valve. 708.375A - 2172B Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 31: Testing For Gas Leaks

    Contact the water supplier or local plumbing inspector on how to correct the situation. Never plug the relief valve. We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 32: Filling The Condensate Trap

    – Have the instructions for configuring the flue system as specified in the relevant Installation instruction for the flue gas system been observed? Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 33: Checking The Orifices

    Press the "Chimney Sweep" button and hold it (for approx. two seconds) until the display shows a decimal point. We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 34: Checking And Adjusting The Gas/Air Ratio

    2). Fig. 36 Checking the gas/air ratio Switch on the heating system using the main switch. Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 35 Remove the measurement set-up, tighten the screw in the burner pressure measuring nipple. Switch on the heating system using the main switch. We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 36: Carrying Out A Leak Test In Operating Conditions

    You must also test the gas and water lines for leaks. Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 37: Measuring The Ionization Current

    Remove the measuring device and restore the plug and socket connection. Switch on the heating system again using the main switch. We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 38: Testing The Ignition Safety Shut Off Device

    Show the owner how the heating system works and how the boiler can be operated. Hand over the technical documents. Fig. 41 Installing the casing Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 39: Bc10 Basic Controller

    The water in the boiler has reached the required temperature or there is no heat request. Table 7 LED indication We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 40: Displaying The Heating System Status And/Or Faults

    Standard display for this operating condition. This display appears after 5 minutes if no button is pressed. The temperature is higher as 199° when 199 is blinking in the display. Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 41 Standard display for this operating condition. This display appears after 5 minutes if no button is pressed. The temperature is higher as 199° when 199 is blinking in the display. We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 42: Carrying Out Additional Tasks

    Press the "Chimney Sweep" button (for more than 5 seconds) until the decimal point in the status display flashes. Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 43: Configuring The Boiler

    (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 • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 44: Setting The Dhw Temperature Value

    The LED under the rotary knob lights up when the heating system is switched on and heat is requested. In summer mode the heating system is switched off (LED off). Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 45: Setting The Pump Post-Purge Period

    On thermostat only systems a 5 to 10 minute post-purge setting is recommended to purge heat from the boiler. We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 46: Shutting Down The System

    You must immediately close the main shut-off valve or gas shut-off valve and disconnect the power from the heating system. Close the main shut-off valve. Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 47: 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 • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 48: Internal Leak Testing

    32. 12.11 Checking venting systems Check air intake and flue gas for obstruction or damage. Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 49: Maintenance

    Pull the plug from the fan unit (fig. 44, pos. 3). Fig. 44 Removing the connections We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 50 Press the "Chimney Sweep" button until the decimal point is displayed. Leave the boiler on for approx. 10 minutes. Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 51: 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 34. We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 52: Converting The Boiler To Propane

    (fig. 50, pos. 1). Remove the gas orifice (fig. 50, pos. 2). Fig. 50 Replacing the gas orifice Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 53 5.40 (0.213) the required information on the conversion label. Table 12 Gas orifice diameter Fit the casing again. We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 54: Appendix

    The boiler then switches to CH mode. The operating code flashing in the display after the service button is pressed is A01/ 818. To enable the DHW, restart the boiler. Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 55: Error Messages

    Y 223 Loose contact or faulty supply sensor. 1, A, C, Internal UBA fault. F, H, L, We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 56: Technical Specifications

    Electrical power consumption, at partial load Table 14 Technical specifications If the heating capacity is limited to max. 80% (L80). Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 57 The venturi article number is marked on both clips of the venturi (see fig. 51, pos. 1 and 2). We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 58: Reports

    14. Fitting the casing 15. Inform the owner; hand over the technical documents Confirm proper start-up Company stamp/signature/date Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 59: Inspection Report

    14. Final check of inspection activities, note down the measurement and test results 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 • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 60: Maintenance Report

    _______________ % _______________ % Confirm proper maintenance Company stamp/ Company stamp/ Signature Signature Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 61: Spare Parts

    17 Spare parts Below is a list of the spare parts for this boiler. 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. Pos.
  • Page 62 Conversion kit propane 24/30 kW 76687 Conversion kit propane 45 kW 76688 Conversion kit propane 60 kW 7746900156 Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 63 Spare parts Exploded view Logamax plus GB142-24/30 We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 64 Spare parts Exploded view Logamax plus GB142-45/60 Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 65: Index

    Hot-water target value ......44 We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation Instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 66 Notes Buderus • http://www.buderus.net We reserve the right to make any changes due to technical modifications! Installation Instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 67 Notes We reserve the right to make any changes due to technical modifications! Buderus • http://www.buderus.net Installation Instructions Logamax plus GB142-24/30/45/60 • version 10/2007...
  • Page 68 Heating Contractor: PRODUCTS MANU ACTURED BY BBT Thermotechnik GmbH 35573 W www.buderus.de Bosch Thermotechnology Corp. 50 Wentworth Avenue Londonderry, NH 03053 Tel: 603-552-1 www.buderus.net Bosch Thermotechnology Corporation reserves the right to make changes without notice due to continuing engineering and technological advances.

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