Hello ! Can anybody help or point me in the right direction. I need a boiler firing sequence for regular/conventional natural draught- room sealed boiler, natural draught- open flue boiler. regular/conventional open flue fan assisted boiler regular/conventional room sealed fan assisted boiler system boiler/ condensing system boiler regular Ive got a book on combies but it has no info on regular or system. I looked in many books and its getting confusing. Thank you for any help you can provide.
Hi elmi, I'm not sure what you mean but here's what happens 1. natural draught,-- if pilots in, the thermacoulpe tells the gas valve to go, and it does, 2. fan assisted, Once the fan is running the message goes through a pcb to active the pilot, when this happens another message goes though the pcb if the pilots lit, to open the gas valve and it fires, 3.system boiler, the pump runs and activates a sensor throu the pcb to tell the fan to run, then as above, 4 condensating sytem, as above but with a sensor to the condencating bottle to cut out if the bottle is full,