Dissolved gases such as carbon dioxide and oxygen cause boiler corrosion and must be removed by deaeration and other methods of treatment. Because dissolved minerals cause scale, corrosion, and turbine blade deposits, boiler feedwater must be treated with lime or soda ash to precipitate these min- erals from the water.
Open all the valves in the feedwater line. Switch on the feedwater pump motor and fill the boiler, see Section 3 - Operation. The operation of the pump controls should be checked by using the boiler blowdown valve (located at the rear of the boiler). Open the boiler blowdown valve
Boiler Gas Valve Problems And Faults - Heating | Gas
Dec 12, 2010 · This is usually a square red button on the side of the burner. It should start after a couple of tries. However if it fails, you could check the fuse. Replace the fuse if it appears to have blown. If the boiler still doesnt start, check the motor on the burner assembly as it may have burned out. Should this be the case, arrange for a replacement. 2.
TREATMENT MAKE UP RETURNED CONDENSATE WATER AND HEAT FEEDWATER WATER AND SOLIDS SATURATED STEAM EVAPORATED WATER Continuous blowdown to remove dissolved solids in boiler water Intermittent blowdown to remove suspended solids in boiler water Blowdown - Removes boiler water with a high concentration of solids which is replaced by feedwater containing a low
Common boiler problems: 10 common issues & causes - DIY
faulty gas valve (sticking armature, blocked or damaged) replace solenoid / gas valve. faulty ignition electrodes / leads. inspect gap (s) / condition. faulty printed circuit board. replace circuit board. blocked injector. check injector. gas at meter or boiler off.
Burner output doesnt modulate until set temperature is reached: Check the burner setting pressure of the gas valve. Replace gas valve or/and replace PCB: Sensor neon illuminating: When sensor neon is illuminated a fault on one of the temperature sensors is indicated. Replace the temperature sensor and contact your installer or boiler specialist