Buderus Logano G234X Installation And Service Instructions Manual
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Buderus Logano G234X Installation And Service Instructions Manual

Gas boiler
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See also: Instruction Manual , Installation and Service Instructions Manual
Installation and Service Instructions
Logano G234X
Gas boiler
Please read carefully before installing and servicing.
UPON COMPLETION OF THE INSTALLATION THE INSTALLER MUST
INSTRUCT THE OWNER AND OPERATOR ON THE FUNCTIONALITY AND
THE PROPER OPERATION OF THE BOILER AND THE HEATING SYSTEM.
INSTALLER MUST REVIEW ALL SAFETY INSTRUCTIONS WITH THE
OWNER AND OPERATOR.
THIS MANUAL SHOULD BE HANDED TO THE QWNER AND OPERATOR OF
THE APPLIANCE.
DANGER!
The installation instructions included in this Manual are intended solely for
use by a trained and certified installer, service company or the gas supply
company. If the information in this manual is not followed, a fire or explosion
may result causing property damage, personal injury, or death.
Have installation and service performed by a trained and certified
installer or service company, or the gas supply company.
Buderus recommends signing a service and maintenance contract with
a trained and certified installer or service company that covers annual
servicing and condition-based maintenance. Proper maintenance is a
fundamental requirement for safe and efficient operation and long
service life.

The boiler must be serviced annually including the main burner, ignition
burner, the entire venting system, and the combustion air supply. All
parts that show any signs of damage or corrosion must be replaced.

The owner and operator is responsible for the operational safety and
regulatory compliance of the heating system.
Improper installation, adjustment, alteration, service, or maintenance
can cause property damage, personal injury, or death. Refer to this
manual and consult a trained and certified installer or service company,
or the gas supply company before installation, service or maintenance.
Gas boiler

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Summary of Contents for Buderus Logano G234X

  • Page 1 Have installation and service performed by a trained and certified installer or service company, or the gas supply company. Buderus recommends signing a service and maintenance contract with a trained and certified installer or service company that covers annual servicing and condition-based maintenance. Proper maintenance is a fundamental requirement for safe and efficient operation and long service life.

  • Page 2: Table Of Contents

    Ventilation openings ..23 2.8.1 Logano G234X dimensions ..... . . 6 Inspection of the boiler and burner .

  • Page 3: Safety Considerations

    ▶ Ensure that the power is not restored unintentionally by following and certified installer or service company. proper lock out/tag out procedures. ▶ Only qualified electricians are permitted to carry out electrical work. Logano G234X – 6 720 804 886 (2012/08)

  • Page 4: Product Description

    • The technical regulations of the gas utility company regarding the The Logano G234X is generally referred to below as a boiler. connection of the gas burner to the local main gas supply. The installation and maintenance manual is provided for technicians •...

  • Page 5: Other Important Information

    • Drain valve (¾ ") heating water. The insulation reduces energy loss. Vent Damper Technical documentation Foil package Table 2 Package Contents All accessories can be ordered optionally from Buderus: • Heating pump • Cleaning brush Logano G234X – 6 720 804 886 (2012/08)

  • Page 6: Contents

    18 5/16 25 10/16 2 10/16 6 720 804 886-02.2T Fig. 2 Connections and dimensions for Logano G234X, dimensions in inches (dimensions in mm) [VK/VS]Boiler supply/Storage tank supply [GAS] Gas connection + main isolating valve [RK] Boiler return [RSL/EL] Return safety line/draining...

  • Page 7: Specifications

    0 - 8500 ft (0 - 2591 m) [In. W.C.] [mbar] 2.20 10.6 26.5 2.40 10.5 26.2 2.30 10.3 25.8 2.45 10.3 25.9 Table 5 Main gas orifice identification and rated orifice pressure for propane gas Logano G234X – 6 720 804 886 (2012/08)

  • Page 8: Moving The Boiler

    (e.g. in spray cans, ▶ Place a pipe under the boiler and roll it on additional pipes to the solvents and cleaning agents, paints, glues). installation location. ▶ Avoid excessive dust accumulation (building dust). Logano G234X – 6 720 804 886 (2012/08)

  • Page 9: Clearances

    ▶ Level the boiler vertically and horizontally, inserting metal shims underneath as required. NOTICE: Risk of system damage due to contamination! ▶ Protect boiler connections from damage and dirt if the boiler is not to be installed immediately. Logano G234X – 6 720 804 886 (2012/08)

  • Page 10: Connecting The Heating System

    Observe the local regulations for connection of boiler systems. 7 747 010 720-78.1RS Fig. 8 Low-water cut-off Boiler Panel radiator Heating system with low-water cut-off Heating system without low-water cut-off Logano G234X – 6 720 804 886 (2012/08)

  • Page 11: Electrical Connection

    ▶ Mount a power switch near the boiler. Fig. 9 Supply connection Boiler Supply connection Safety valve Supply manifold pipe (factory-installed) 90°-elbow (¾ " NPT) O F F 7 747 010 720-80.1RS Fig. 10 Main power switch Logano G234X – 6 720 804 886 (2012/08)

  • Page 12: Fuel Gas Supply Connection

    Equivalent lengths for pipe fittings in feet (1 foot = 0.3 m) inches) Type of pipe fitting 90° elbow T-piece Shut-off valve Gas shut-off valve 1.60 1¼ 2.15 1½ 2.50 3.00 2½ 3.50 Table 8 Equivalent lengths for pipe fittings Logano G234X – 6 720 804 886 (2012/08)

  • Page 13: Converting Boiler To Propane

    ▶ Isolate the expansion tank from the system by closing the valve. ▶ Open the mixing and shut-off valves on the heating water (primary) side. ▶ Slowly fill the boiler with tap water. Logano G234X – 6 720 804 886 (2012/08)

  • Page 14: Install Front Panel Of Boiler

    Fig. 13 Supply connection ▶ Draw the operator's attention to any deficiencies and Boiler the potential dangers. Supply connection Safety valve Supply manifold pipe (factory-installed) 90°-elbow (¾ " NPT) Logano G234X – 6 720 804 886 (2012/08)

  • Page 15: Requirements For Connection To Chimneys Or Venting

    Fans in use in summer must remain in operation and oven exhaust system flaps must be closed. Logano G234X – 6 720 804 886 (2012/08)

  • Page 16: Installing The Flue Pipe

    ▶ Make sure that all cables are routed through the system. conduits provided. The position of the vent damper must be visible. ▶ Disconnect all electrical power to your heating system. Logano G234X – 6 720 804 886 (2012/08)

  • Page 17: Placing The Heating System In Operation

    Fig. 18 Remove front panel of boiler Locking screws Boiler jacket Front panel of boiler Logano G234X – 6 720 804 886 (2012/08)

  • Page 18: Start-Up Instructions

    11. Always follow the start-up instructions on the next page. WARNING: Risk of system damage! ▶ Do not operate the appliance if any part is under water. ▶ Contact a trained and certified installer immediately. Logano G234X – 6 720 804 886 (2012/08)

  • Page 19: Making Boiler Ready For Operation

    ON/OFF dial (at ON position) Screw plug for gas connection pressure test port Safety screw for nozzle pressure setting Screw plug for nozzle pressure test port Safety screw for ignition nozzle pressure setting Logano G234X – 6 720 804 886 (2012/08)
  • Page 20 Screw plug for nozzle pressure test port Safety screw for ignition nozzle pressure setting 13. Observe pilot flame through the inspection hole in the burner cover ( Fig. 21, page 19). Fig. 25 Main burner Main burner flame Logano G234X – 6 720 804 886 (2012/08)

  • Page 21: Shutting Off Gas Supply To Boiler

    29. To avoid corrosion, carefully wipe off the soap solution afterwards. ON/OFF button (at OFF position) ▶ Hang front panel of boiler [3] from above, fold down and screw in securing screws [1] into the front cover below. Logano G234X – 6 720 804 886 (2012/08)

  • Page 22: Inform Owner/Operator, Hand Over Technical Documentation

    Check of the perfect function of the venting system Check maximum AquaSmart setting page 21 Install front panel of boiler page 21 Inform operator, hand over technical documentation page 22 Installer: Signature:_________________ Operator: Signature:_________________ Logano G234X – 6 720 804 886 (2012/08)

  • Page 23: Taking The Heating System Out Of Operation

    • to ensure reliable operation and a long service life. Maintenance work may only be carried out by a trained and certified installer. If parts are replaced, only Buderus approved components may be used. Maintenance must be carried out once a year. The results of the inspection must be recorded in the maintenance log (...

  • Page 24: Preparing Boiler For Cleaning

    ▶ Disconnect pilot gas pipe [6] from the gas valve [8]. ▶ Loosen igniter sensor cable [3] from the automatic igniter. ▶ Tie gas line [2] with wire or cord (secure). ▶ Loosen the retaining screw [1] on the gas feed line Logano G234X – 6 720 804 886 (2012/08)

  • Page 25: Wet Cleaning (Chemical Cleaning)

    6 720 804 886-10.1T control unit. Fig. 36 Wet-cleaning the boiler ▶ Use boiler brush to clean out flue gas passages. ▶ Clean combustion chamber and bottom panel. ▶ Start up the heating system. Logano G234X – 6 720 804 886 (2012/08)

  • Page 26: Cleaning The Burner

    ▶ Flush the burner rod with a water jet. Hold burner so that water enters all slots of the burner rods and drains out again. ▶ Remove remaining water by swinging the burner. Logano G234X – 6 720 804 886 (2012/08)

  • Page 27: Troubleshooting The G234X

    • If the gas valve does not close, replace gas valve. End of troubleshooting Repeat procedure until heating system operates properly. 6 720 804 440-52.2T Fig. 39 Troubleshooting the G234X Logano G234X – 6 720 804 886 (2012/08)
  • Page 28 Specified thermostat value (control) reached Main and ignition gas valves close, gas burners ex- tinguished, vent damper (if installed) closes. 6 720 804 440-53 Fig. 40 Troubleshooting the G234X Logano G234X – 6 720 804 886 (2012/08)

  • Page 29: Maintenance Protocol

    ____________inches W. C. ____________inches W. C. ____________inches W. C. ____________inches W. C. ____________inches W. C. ____________inches W. C. ____________inches W. C. ____________inches W. C. ____________inches W. C. ____________inches W. C. Table 14 Maintenance protocol Logano G234X – 6 720 804 886 (2012/08)

  • Page 30: Electrical Circuit Diagrams

    Electrical circuit diagrams Electrical circuit diagrams 6 720 804 886-06.2T Fig. 41 Wiring Diagram - G234X Logano G234X – 6 720 804 886 (2012/08)
  • Page 31 Electrical circuit diagrams 6 720 804 886-07.2T Fig. 42 Wiring Diagram - G234X Logano G234X – 6 720 804 886 (2012/08)
  • Page 32 United States and Canada Bosch Thermotechnology Corp. 50 Wentworth Avenue Londonderry, NH 03053 Tel. 603-552-1100 Fax 603-584-1681 www.buderus.us U.S.A. Products manufactured by Bosch Thermotechnik GmbH Sophienstrasse 30-32 D-35576 Wetzlar www.buderus.com Bosch Thermotechnology Corp. reserves the right to make changes without notice due to continuing...

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