Buderus 500 - 28/C Servicing Manual
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Buderus 500 - 28/C Servicing Manual

Gas wall hung boiler condensing
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7214 8900 – 02/2006 GB(EN)
Servicing manual
Gas wall hung Boiler condensing
Buderus 500 - 24/S
Buderus 500 - 24/C
Buderus 500 - 28/C
Please read thoroughly before attempting fault diagnosis
For the installer

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Summary of Contents for Buderus 500 - 28/C

  • Page 1 7214 8900 – 02/2006 GB(EN) For the installer Servicing manual Gas wall hung Boiler condensing Buderus 500 - 24/S Buderus 500 - 24/C Buderus 500 - 28/C Please read thoroughly before attempting fault diagnosis...
  • Page 2 If you have suggestions for improvement or have found discrepancies, please do not hesitate to contact us. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...

  • Page 3: Table Of Contents

    – wall spacing frame instructions. : Please hand the log book back to the user. REMEMBER We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...

  • Page 4: General

    CH flow/return temperature is as low as possible. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 5 No asbestos, mercury or CFCs are included in any part of the boiler and its manufacture. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 6 Type of flue-gas connection (model) 13(x) 33(x) 53(x) 73(x) 60/100 (accessory) Ø Flue gas pipe / combustion-air inlet We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 7 30 seconds Plate heat exchanger (warm start) 1 minute 1 minute 1 minute After service mode We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...

  • Page 8: Servicing Manual Gas Condensing Boiler Buderus 500-24/S, 500-24/C And 500-28/C • Issued

    General box 6 Overview Buderus 500 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...

  • Page 9: Servicing Manual Gas Condensing Boiler Buderus 500-24/S, 500-24/C And 500-28/C • Issued

    Item 29: RTH converter / junction box CAUTION! Use eye protection, inhalation protection, hearing, gloves, shoes etc. on the right time. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...

  • Page 10: Servicing Manual User Guide

    Yes: step 36 step 39 step 36 Check to ensure that the the Buderus 24V AC external three-way valve has been fitted correctly, see box 228. step 37 Has the Buderus 24V AC external three-way valve been fitted correctly? Yes:...

  • Page 11: Operation

    D-button (item 2, 3, 5, 6 and 7) and the display (item 4), box 12 to 14. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 12 → Adjust configured hot water mode ? Yes: step 7 step 6 → step 8 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 13 → step 22 Any adjustments that you have made will now be confirmed. step 1 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...

  • Page 14: Function

    5 step 4 → step 6 The Buderus 24V AC external 3-way valve is turned to “heating mode” in 7.5 seconds, while an internal 3-way step 5 valve is turned to “heating mode” in 2 seconds. ,00{ The display on the DBA control panel of the boiler is checked (maximum of one second).
  • Page 15 The glow ignitor is activated for seven seconds. C [0l] Ignition phase: The gas valve is opened. step 48 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 16 Start of the post purge phase of fan (10 seconds). → step 71 The fan stops. step 13 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...

  • Page 17: Symptoms

    " appears. The boiler stops heating and the pump is still running. The only way to stop the locking is by pushing the reset " " button. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 18 2) In the event of this malfunction, the pump is started up and remains in continuous operation in order to minimise the possibility of the heating system freezing up. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 19 2) In the event of this malfunction, the pump is started up and remains in continuous operation in order to minimise the possibility of the heating system freezing up. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 20 2) In the event of this malfunction, the pump is started up and remains in continuous operation in order to minimise the possibility of the heating system freezing up. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...

  • Page 21: Diagnosis

    Turn the operating switch on the DBA control panel of the boiler to position “1” (ON), see box 55. step 29 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 22 Check the turbine flow-meter, see box 104, or DWH temperature sensor of any external storage-type water step 19 heater that might be fitted. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 23 34 step 31 → step 32 Check the movement of the servomotor of the Buderus 24V AC external 3-way valve, see box 211. step 32 → Does the servomotor of the Buderus 24V AC external 3-way valve move correctly?
  • Page 24 Replace the drive mechanism of the Buderus 24V AC external 3-way valve, see box 221. step 71 Check the wiring of the Buderus 24V AC external 3-way valve between the connection box or moving plug- step 72 and-socket connection and the motor of the Buderus 24V AC external 3-way valve, see box 287.
  • Page 25 42 step 10 Check to ensure that the CH flow temperature at the DBA control panel or on the Buderus controls or ON/ step 11 OFF controller is adjusted to a high enough setting as per box 14 and box 61 .
  • Page 26 Replace the internal components of the Buderus 24V AC external 3-way valve, see box 224. box 42 step 47 Check the wiring of the Buderus 24V AC external 3-way valve between the connection box or moving plug- step 48 and-socket connection and the DBA control panel as per box 287.
  • Page 27 Check to see if a hot tap or taps have been opened on brief, consecutive occasions. step 7 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 28 → Is the by-pass valve working correctly? Yes: box 41 step 15 → step 14 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 29 Check to ensure that the mains voltage at the earthed (grounded) plug is between 195V and 253V AC. step 12 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 30 18 → Has the malfunction been repaired? Yes: box 42 step 19 → box 41 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 31 13 → Is the pump working correctly? Yes: box 41 step 14 → step 15 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 32 Does the glow ignitor activate with the operating code Yes: step 21 step 17 → step 18 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 33 → Fit the correct gas injector and/or Venturi, see box 5. step 62 step 46 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 34 Has the entire table box 36 been covered? Yes: box 41 step 66 → step 1 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 35 41 step 5 → step 6 Replace the gas valve, see box 174. step 6 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 36 Interpret the fault code now displayed in box 20 and deal with the malfunction. step 9 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 37 Turn the mains switch on the DBA control panel of the boiler to position “1” (ON), see box 55. step 3 The fault is now rectified. Your Buderus 500 should be working now. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...

  • Page 38: Actions

    = MCW inlet (combination boilers only) = CH return Close the servicing valves (item 6), if fitted. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 39 Fit the casing and use the radiator key to turn the casing lock to “closed”. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 40 Open the gas tap (item 2). box 60 Put the boiler into operation, see box 53, 54 or 55. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 41 Remove the casing and place the boiler out of operation, see box 47, 43 or 44. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 42 Refit the casing and place the boiler into operation, see box 51, 53, 54 or 55. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 43 Refit the casing and place the boiler into operation, see box 51, 53, 54 or 55. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 44 Loosen the three screws (item 1) on the gas valve. Remove the gas valve (item 2). We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 45 Refit the vent screw to the pump. Fit casing, see box 51. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 46 (L and N) of the power supply plug of the pump during locking fault code [2l] . We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 47 43, 44, 47, 45, 49 or 50. Remove the power supply plug of the pump, see box 92. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 48 The measured resistance of the flow NTC sensor is virtually identical to that of the safety sensor. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 49 Pull out the plugs of the flow NTC sensor and safety sensor, see box 105. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...

  • Page 50: Pull Out The Plug Of The Safety Sensor

    Fill the heating system, vent it of air and place the boiler into operation, see box 52 to 58. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...

  • Page 51: Box 121

    Put the boiler into operation, see box 51, 54 or 55. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 52 Connect the plug of the glow ignitor. Put the boiler into operation, see box 54, 55 or 51. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 53 Loosen the fixing nut of the glow ignitor (item 1). Remove the mounting plate (item 2). Detach the glow ignitor (item 3). We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 54 (ground) ionisation electrode and earth (ground) must be infinitely must be infinitely high. high. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 55 The electrical resistance of the ionisation electrode cable Ω must be approximately 0 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 56 Remove the power supply plug of the gas valve, control panel, see box 43, 44, 47, 63 or 70. see box 168. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 57 Pull the gas injector (item 1) out of the gas valve. 3-way valve Bridge the two contacts, terminal 1 and 2. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 58 Close the hot water tap. Check to see if the servomotor runs back again. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 59 Check to see if, during operating code C [0h], 24 V AC is detected at plug-in contacts “1” and “2” . We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 60 Refit the servomotor, following the above procedure in reverse order. Put the boiler into operation, see box 51, 54 or 55. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 61 Pull out the flow NTC sensor plug (item 2). Pull the main switch cable out of the nut (item 3). We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 62 Note that water will squirt out when the internal 3-way valve is removed. Have a bucket and a supply of dry cloths to hand. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 63 Check to see if, during operating code C [0h] , 24 V AC is detected at plug-in contacts “2” and “3”. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 64 Put the boiler into operation, see box 54 or 55. A = flow of storage-type water heater B = CH flow AB= boiler flow We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 65 Fit the DBA control panel and place the boiler into operation, see box 51, 54 or 55. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 66 –5 Pa (±5 Pa) (as indicated by the measuring device: –10 to 0 Pa). We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 67 Take the boiler out of operation and close the gas tap, see box 43, 44, 46 or 47. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 68 Pull out both fan plugs (item 1). Loosen both screws (item 1). Remove the burner. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 69 254 Loosen both screws (item 1). Remove the sight glass along with the seals. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 70 Remove the stop spring on the bottom right-hand side of the heat exchanger by turning it towards the arrow. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 71 The released coil (item 1) touches the underside. CAUTION! Insert a new heat exchanger-gas/air seal before fitting the gas/air unit. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 72 Remove both screws from the plate heat exchanger. box 273 Remove condensate trap. box 271 Remove the plate heat exchanger. Remove syphon. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 73 Take the boiler out of operation and remove the DBA the arrow. control panel, see box 43, 44, 47, 63 or 70. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 74 1 and the Neutral to terminal 2 of the 230V connection (item 2). We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 75 Connect the volt free cable at position 1 and 2 of the volt free connection, see box 285, item 3. We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...

  • Page 76: Appendix

    1 pin 6 pin1 Mains 230 VAC, 50 Hz glow ignitor 120 VAC Mains switch We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...

  • Page 77: Index

    ......box 143 We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 78 Notes We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 79 Notes We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006...
  • Page 80 Heating system specialist: Buderus Cotswold Way Warndon Worcester WR4 9SW Telephone: 01905 - 752 936 Fax: 01905 - 753 130 Customer Services: Tel: 0870 - 421 5933 Technical Product Support: Tel: 0870 - 421 5944 Sales: Tel: 01905 - 752 640...

This manual is also suitable for:

500 - 24/c500 - 24/s

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