Gas boilers have their own maintenance procedures, not just the maintenance of the boiler itself, but also the repair and maintenance of auxiliary equipment and accessories. The maintenance of a single gas boiler unit alone is a complex matter, as the structure of the boiler is intricate, and only regular normal use and careful post-maintenance can ensure a longer service life. Compared to more complex maintenance of other boiler types like circulating fluidized bed boilers and power station boilers, the maintenance of gas hot water and gas steam boilers is relatively easier due to the simpler structure of the boiler itself, but it is still much more challenging than regular mechanical maintenance.

Cleanliness:

Open the burner door, remove the rear shell panel, and unscrew the boiler's side cleaning port screws. Clean the gas pipeline with a wire brush. Clean the combustion chamber with a soft bristle brush. Remove the residue inside the boiler, screw the cleaning port screws back in place, close the burner door, and check that the seal is intact.

2. Antifreeze

If the boiler is installed in an area with temperatures below 0°C, the following protective measures must be taken: If the boiler room is outdoors, lower the indoor temperature to 15°C or 18°C to keep the boiler running all day. If the room will be unoccupied for an extended period, empty the water from the boiler.

3. Cathodic Protection

Boiler components are made of various materials, such as cast iron, copper, and aluminum. Cathodic protection measures must be taken to prevent electrochemical corrosion.

4. Wastewater Discharge

Bottom drainage of gas-fired boilers can prevent smoke condensation. Smoke condensation occurs due to water content in the flue gas (diesel or natural gas) and low flue gas temperatures. Burning 1kg of diesel produces 1.04kg of water. Some of this water is exhausted through the chimney, some is absorbed by the chimney walls, and the remainder settles at the bottom of the chimney. The amount of water produced is affected by: flue gas temperature (efficiency reaches 91% with flue gas temperatures of 170℃), the total surface area of the chimney, the material of the chimney, and the insulation of the chimney.

5. Burner Maintenance:

Maintenance of gas boilers and burners is best conducted after the heating season, rather than at the start of it. This is because combustion by-products can corrode the boiler and cause carbon buildup, so it's important not to allow these by-products to remain in the boiler for too long.