Wall Hung Gas Boiler is widely used for home heating and domestic hot water supply. Stable performance of Wall Hung Gas Boiler relies not only on product quality, but also on regular seasonal maintenance. Proper maintenance improves Wall Hung Gas Boiler’s thermal efficiency, reduces gas consumption, lowers failure rates and extends Wall Hung Gas Boiler service life.

After the heating season, complete these four basic maintenance steps to minimize errors and faults when Wall Hung Gas Boiler starts up next time:

1. Remove air from the pipeline

Open the air vent on each radiator and bleed air slowly. Close the valve once water flows out. Air trapped in pipes will cause strange noise and uneven heating for Wall Hung Gas Boiler.

2. Keep proper water pressure

Check the pressure gauge on Wall Hung Gas Boiler. The optimal pressure range is 1.0–1.5 bar. Wall Hung Gas Boiler cannot operate when pressure is below 1 bar for equipment protection. Add water via the filling valve if pressure is low. Release a small amount of water if pressure is too high.

3. Clean the water inlet filter

Remove the cold water inlet filter at the bottom of Wall Hung Gas Boiler and rinse it clean. Limescale and impurities in the blocked filter will reduce water flow and heat efficiency of Wall Hung Gas Boiler.

4. Shut off valve & power for protection

For long-time shutdown of Wall Hung Gas Boiler, turn off the gas valve and power supply. Inspect the outdoor flue and clear leaves or debris to keep it unobstructed. Do NOT drain the water inside the pipeline. The retained water prevents pipe rust and seal aging of Wall Hung Gas Boiler.

In winter, activate the anti-freezing function of Wall Hung Gas Boiler if the house is unattended, to avoid heat exchanger freeze cracking. Wipe the outer casing of Wall Hung Gas Boiler with a damp cloth; never spray water directly on electronic parts of Wall Hung Gas Boiler.

Professional maintenance for Wall Hung Gas Boiler is recommended once a year before the heating season. Qualified technicians should clean dust and carbon deposits on burners and heat exchangers of Wall Hung Gas Boiler, test gas tightness, circulating pump, expansion tank and all safety devices of Wall Hung Gas Boiler. For condensing Wall Hung Gas Boiler, clean the condensate drain pipe to avoid overflow.

Regular maintenance ensures safe, stable and long-term operation of Wall Hung Gas Boiler, cutting repair costs and bringing reliable heating and hot water all year round.