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Gas-Fired Condensing Boilers: Greenstar Combi 100P and 151P Inspection and Maintenance

This general maintenance procedure also serves as an inspection form. Maintenance is required for a long service life of the appliance, for effficient and economical operation, and to keep the environmental impact as low as possible.
MaintainX
05/03/2021

Gas-Fired Condensing Boilers: Greenstar Combi 100P and 151P Inspection and Maintenance

40 steps
This general maintenance procedure also serves as an inspection form. Maintenance is required for a long service life of the appliance, for effficient and economical operation, and to keep the environmental impact as low as possible.
  • Regular service and maintenance are recommended for a long service life of the appliance, for efficient and economical operation, and to keep the environmental impact as low as possible.

  • DANGER: Explosion!

  • DANGER: Risk of flue gas poisoning.

  • DANGER: Risk of electric shock!

  • NOTICE: Insufficient antifreeze can accelerate corrosion.

  • Heat exchanger

  • NOTICE: Damage to the coating of the heat exchanger.

  • Heatronic boiler control

  • In case of a component defect, a fault is shown on the display. The Heatronic boiler control monitors all safety and control components.

  • NOTICE: The Heatronic boiler control can be damaged by leaking water.

  • The following analytical tools are needed for service and maintenance:

  • After the inspection/maintenance:

  • Description of various steps

  • Calling up the latest fault (service function 6.A)

  • Fresh water filter (only combi boiler ZWB..-3A)

  • Plate type heat exchanger (only combi boiler ZWB..-3A)

  • If the DHW output on the combi boiler is significantly reduced:

  • To remove the plate type heat exchanger:

  • ▶ Remove the plate type heat exchanger.

  • Checking the electrodes

  • Burner servicing

  • Heat exchanger block inspection and cleaning

  • NOTICE: Damage to the coating of the heat exchanger.

  • If mechanical cleaning is required:

  • For cleaning the heat exchanger, use Bosch main heat exchanger gaskets, the heat exchanger brush and the heat exchanger cleaning blade which are available as spare parts.

  • ▶ Clean the condensate tray (with reversed brush).

  • Condensate trap cleaning

  • ▶ Remove condensate trap (steps 1 and 2) and check heat exchanger orifice for clear passage.

  • Checking the mixer diaphragm

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