Condensing Gas Boilers Maintenance Information

Greenstar (All Models) Gas-Fired Boilers

Safety Notice - This is a gas-fired boiler. Only professionals who are qualified to work on such equipment should do so. If you are in need of a qualified professional in your area, please use this contractor search page: Find A Service Provider

The maintenance steps below, and how to conduct them, are covered in the manual that came with your boiler and must be referred to prior to engaging in any work! If you no longer have a printed copy, a new one can be downloaded from this page: Gas Condensing Boilers Manuals

Maintenance Requirements

Daily (by owner)

  • Ensure that no flammable/combustible materials are stored close to the boiler and that the air in the room is uncontaminated.
  • Visually inspect the exterior of the boiler for damage or discoloration.
    If any damage, discoloration, gas leaks, or water leaks are found during visual inspections, please turn off the power, water, and gas supply to the boiler and report it your installer or a qualified service person immediately.

Annually (qualified service person)

  • Check the error code logs. If any error codes are present, please refer to the manual for further explanation.
  • Inspect and clean the inlet water filter.
  • Inspect the exhaust vent connection, exhaust pipe, and exhaust termination for damage, leaks, discoloration, or blockages.
  • Check that gas pressure is within the required parameters.
  • Carry out a combustion test, and adjust the air/fuel ratio as needed. Refer to this service bulletin for directions: Combustion Adjustment Procedure. (PDF 0.5 MB)
  • Inspect all gas and water piping and connections for leaks or damage.
  • Inspect and clean the electrode set.
  • Inspect the heat exchanger for signs of damage or blockages.
  • Check the heat exchanger's inspection cover and ensure that the bolts are at the correct torque. Refer to this service bulletin for directions: Inspection Cover Torque Requirements. (PDF 0.3 MB)
  • Inspect the burner for signs of blockage or damage.
  • Inspect the diaphragm.
  • Inspect, clean, and refill the condensate trap.
  • Inspect the expansion vessel.
  • Check the system pressure.
  • Inspect wiring for damage.
  • Check the controls for correct settings.

Every 5 years (qualified service person)

  • Clean the heat exchanger.

If the inspections reveal any damaged components, they must be replaced prior to placing the boiler back into operation.

A detailed parts breakdown can be downloaded from this page: Parts Diagrams

Spare parts pricing & availability information can be found on this page: Aftermarket Resource Center