Wolf MGK-130 Maintenance Instructions Manual
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Wolf MGK-130 Maintenance Instructions Manual

Gas condensing boilers
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Maintenance instructions
Gas condensing boilers
MGK-130
MGK-170
MGK-210
MGK-250
MGK-300
Wolf GmbH · Postfach 1380 · D-84048 Mainburg · Tel. +49 8751/74-0 · Fax +49 8751/741600 · Internet: www.wolf-heiztechnik.de
Document no. 3062882_0910
Subject to technical modifications
GB

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Summary of Contents for Wolf MGK-130

  • Page 1 Maintenance instructions Gas condensing boilers MGK-130 MGK-170 MGK-210 MGK-250 MGK-300 Wolf GmbH · Postfach 1380 · D-84048 Mainburg · Tel. +49 8751/74-0 · Fax +49 8751/741600 · Internet: www.wolf-heiztechnik.de Document no. 3062882_0910 Subject to technical modifications...

  • Page 2: Table Of Contents

    Contents Contents ................................Page Safety instructions ..............................3-4 Maintenance procedure ............................5-7 Maintenance procedure MGK-130 .........................8-10 Maintenance procedure MGK-170/210/250/300 ....................11-12 Check/maintenance, components MGK-130 to MGK-300 ...................13-17 Neutralising system & siphon ..........................18-20 Maintenance procedure, finalising ........................21-23 Function check ................................24 List of required parts ..............................25 Overview of the steps to be taken and maintenance report .................26-27 Installation, non-return valve for the MGK-130 (when replacing the fan) .............28-30 3062882_0910...

  • Page 3: Safety Instructions

    Safety instructions The following symbols and references are used in conjunction with these important instructions concerning personal safety, as well as operational reliability. "Safety instructions" are instructions with which you must comply exactly, to prevent risks and injuries to individuals and material losses.
  • Page 4 Maintenance work must only be carried out by a qualified heating contractor. Regular maintenance and the exclusive use of original Wolf spare parts are of crucial importance to the trouble-free operation and long service life of your appliance. We therefore recommend you arrange a maintenance contract with a local heating contractor.

  • Page 5: Maintenance Procedure

    Maintenance procedure 3062882_0910...
  • Page 6 Maintenance procedure 5 mm Allow to cool down for 1 hour. 3062882_0910...
  • Page 7 Maintenance procedure 4 x 3 mm 3062882_0910...

  • Page 8: Maintenance Procedure Mgk-130

    Maintenance procedure MGK-130 Fig.: Undo all electrical connections at the fan and the ignition transformer. 13 mm Fig.: Undo the screws between the fan and the mixing chamber. 4 x 13 mm 3062882_0910...
  • Page 9 Maintenance procedure MGK-130 Fig.: Remove the unit comprising burner flange and fan. 6 mm 13 mm 3062882_0910...
  • Page 10 Maintenance procedure MGK-130 Check that the non-return valve operates freely. Fig.: Visual check, non-return valve. Gasket, burner flange gasket. 3062882_0910...

  • Page 11: Maintenance Procedure Mgk-170/210/250/300

    Maintenance procedure MGK-170/210/250/300 Undo all electrical connections at the transformer and the fan. Undo the mixing chamber from the fan. 6 mm 4 x 13 mm 3062882_0910...
  • Page 12 Maintenance procedure MGK-170/210/250/300 Remove the burner flange with the fan. 13 mm 3062882_0910...

  • Page 13: Check/Maintenance, Components Mgk-130 To Mgk-300

    Check/maintenance, components MGK-130 to MGK-300 Flush the burner with tap water or compressed air if necessary. Shake out prior to installation. Burner flange gasket, replace gasket if necessary. 3062882_0910...
  • Page 14 Check/maintenance, components MGK-130 to MGK-300 Secure the flange with gasket and ignition transformer on the fan. 4 x 13 mm 3062882_0910...
  • Page 15 Check/maintenance, components MGK-130 to MGK-300 Insert electrodes correctly Ignition electrode: Earth tab at the top Ionisation electrode: Orientation towards the burner. Ignition electrode with gasket Monitoring electrode with gasket 4 x 3 mm 3062882_0910...
  • Page 16 Check/maintenance, components MGK-130 to MGK-300 Maintenance, cast iron boiler 10 mm Open all cleaning covers. 10 mm Inspect the gasket visually and replace if necessary. 3062882_0910...
  • Page 17 Check/maintenance, components MGK-130 to MGK-300 10 mm Inspect the gasket visually and replace if necessary. Clean the condensate pan with a wet vacuum cleaner. 10 mm 3062882_0910...

  • Page 18: Neutralising System & Siphon

    Neutralising system & siphon • Check the condensate pump. • Top up neutralising system and if necessary granulate. • Check the condensate pump plug-in contact. • Testing the pH value on the neutralising system drain. → A pH value of < 7 indicates that a service is required. • Visual check of the neutralising system: → A service is required if the granulate has a dark coating. → A service is likely to be required if the level has fallen below the maximum level. Remove the perforated sieve on one side and loosen up with the cleaning rod and if necessary water. Repeat the process on the other side. 3062882_0910...
  • Page 19 Neutralising system & siphon Flush the granulate several times with water. Flush empty tube with water. 3062882_0910...
  • Page 20 Neutralising system & siphon Regularly top up with granulate. Fill with new granulate pellets using a funnel and top up to the maximum level. Fig.: Filling Clean and fill the siphon. 3062882_0910...

  • Page 21: Maintenance Procedure, Finalising

    Maintenance procedure, finalising Visual check, flue gas routing. Visual check, air supply. Visual check, electrical plug-in contacts. Diagram MGK High limit safety cut-out inside the sensor well Gas fan Ignition electrode Ionisation electrode Flue gas pressure Flow sensor switch Gas combination valve with Flue gas thermostat gas pressure limiter Return sensor Water pressure switch 3062882_0910...
  • Page 22 Maintenance procedure, finalising Ensure that the casing gasket is correctly fitted. 5 mm Ensure that the casing gasket is tight. 230 V 3062882_0910...
  • Page 23 Maintenance procedure, finalising 3062882_0910...

  • Page 24: Function Check

    Function check Function check a) Open gas tap and check for tightness up to the GCV with a leak detector. b) Start the boiler. The burner starts. c) Check the joint downstream of the GCV with a leak detector. d) Function check: Close the gas tap. Fault code 12 or indicator ring flashes red. e) Open gas tap, press reset button. The burner shuts down. f) Adjust parameters if changes from the factory settings are required. g) Check the function of control accessories. Flue gas test Carry out the test in emissions test mode and enter the values in the maintenance report. Re-adjust the CO content if required (see also installation instructions). 3062882_0910...

  • Page 25: List Of Required Parts

    1 Burner flange gasket 1 Monitoring electrode 1 Monitoring electrode gasket 1 Ignition electrode 1 Ignition electrode gasket 1 Monitoring electrode protective hose 4 M4 x 8 screws Cleaning panel with handle Part no. 2482879 Tester for BImSchV test [Germany] We recommend you include the following as part of your service kit: Silicone grease 10 g tube Part no. 8602264 or 400 g tube Part no. 3500103 Ignition cable Part no. 2744304 Gasket, flue gas DN 150 f. MGK-130 Part no. 3910073 Gasket, flue gas DN 200 f. MGK-170/210/250/300 Part no. 3910060 Return sensor Part no. 8751284 Flow sensor Part no. 8601886 Flue gas temperature limiter Part no. 8751200 Sealing cord, cleaning cover, cast block Part no. 1668246 Gasket, cleaning cover, condensate pan Part no. 3910071 Refill pack, 1.3 kg for neutralising system Part no. 2400731 Service set, neutralising system, comprised of the following: Part no. 2483182 1 Cleaning rod (plastic)

  • Page 26: Overview Of The Steps To Be Taken And Maintenance Report

    Overview of the steps to be taken and maintenance report Overview of the steps to be taken and maintenance report No. Step Report item Switch OFF the boiler, emergency stop switch is OFF Isolate the system from the power supply Close the gas supply valve Remove the casing Unplug the electrical connections from the monitoring and ignition electrodes Replace the electrodes Change the gaskets Visual check of the burner unit Remove the cleaning apertures Clean the heating water heat exchanger Clean the condensate pan Check and if necessary refill granulate, if a neutralising system is installed Clean and fill the siphon, install and check for firm seating Check electrical plug-in contacts Check all lines that carry gas or water for the following: Tightness, corrosion, ageing Visual check, expansion vessel Check function of safety equipment (safety valve) Check ventilation air apertures Open the gas supply...
  • Page 27 Overview of the steps to be taken and maintenance report Overview of the steps to be taken and maintenance report No. Step Report item Switch OFF the boiler, emergency stop switch is OFF Isolate the system from the power supply Close the gas supply valve Remove the casing Unplug the electrical connections from the monitoring and ignition electrodes Replace the electrodes Change the gaskets Visual check of the burner unit Remove the cleaning apertures Clean the heating water heat exchanger Clean the condensate pan Check and if necessary refill granulate, if a neutralising system is installed Clean and fill the siphon, install and check for firm seating Check electrical plug-in contacts Check all lines that carry gas or water for the following: Tightness, corrosion, ageing Visual check, expansion vessel Check function of safety equipment (safety valve) Check ventilation air apertures Open the gas supply...

  • Page 28: Installation, Non-Return Valve For The Mgk-130 (When Replacing The Fan)

    Installation, non-return valve for the MGK-130 (when replacing the fan) Insert the non-return valve into the adaptor. Position gasket onto the non-return valve. Position the mating panel onto the adaptor, taking account of the hole pattern. 3062882_0910...
  • Page 29 Installation, non-return valve for the MGK-130 (when replacing the fan) Position gasket onto the mating panel. Fit the complete unit on the RG 175 fan. 13 mm 4 x View of the fully fitted non-return valve. Non-return valve closed in the fitted position. 3062882_0910...
  • Page 30 Installation, non-return valve for the MGK-130 (when replacing the fan) Check that the non-return valve operates freely. Fig.: Visual check, non-return valve. 3062882_0910...
  • Page 31 Notes 3062882_0910...

This manual is also suitable for:

Mgk-170Mgk-210Mgk-250Mgk-300

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