VITODENS 200 WB2A - Heatingspares247.com

9 Replacement of Parts9.3 Burnera) Gain access by removing the burner assembly as described in section 9.1,steps (b) to (g).b) Remove the ignition and detection electrodes.c) Release the three Torx screws and remove the thermal insulating ring (B).d) Release the four Torx screws and remove the burner assembly (C) with its gasket.e) Replace the burner using a new gasket (D) preferably to a torque of 3.5 Nm.f) Refit the thermal insulating ring (B).g) Check the combustion chamber gasket for any damage and reassemble inreverse order.h) Finally, ensure that the outer casing is secured in position and carry out acombustion check as in 5.6.9.4 Ignition Electrodesa) Gain access by removing the burner assembly as described in section 9.1,steps (b) to (g).b) Pull off the HT leads from the spark generator.c) Remove the ignition electrodes by releasing the two 5mm socket head screwsand withdrawing the electrodes.d) Fit a new electrode assembly using a new gasket and check all clearances. Ifthe gaps are not as specified align the electrodes. Tighten the electrode fixingscrews preferably to a torque of 2.5 Nm.e) Check the combustion chamber gasket for any damage and reassemble inreverse order.f) Finally, ensure that the outer casing is secured in position and carry out acombustion check as in 5.6.55