I have a boiler that burns oil. The only way I can turn on the boiler is by Pressing the red botton by the blower.but it doesnot spark. I cannot see the spark and the flash of the flame that is made to heat up the water to send steam around the house.I recently hired a plumber to put on water heaters around the basement.His work looks alright, but the return of the water goes back into the same pipe that comes out of the boiler to the circulating pump?should it be like that?
You need to trace that water loop again. Find at the boiler the supply nipple and the return nipple. Are they both piped into the loop? If they are and you are seeing a line connecting the 2, then you are seeing a minimum flow bypass loop which is a necessary pipe set up to keep water pumping thru the supply and back into the return if all your radiators (users) are closed off because the rooms got warm enough.
I would have to imagine that the boiler is close to the point where water enters the home, somewhere around the hot water heater. Then the plumber put his heaters in the water line after the boiler. It sounds like he put the return water in after the boiler but before the first heater that he installed. If this is the case, it makes sense. If not, your guess is as good as mine. If you are getting good heat, then why worry?
