My 2nd floor won’t push out air and I still don’t have water coming out of them. My first floor all of those are fine but my 2nd floor none of them will push air or water coming out is there not enough pressure???
Hi @ajpabosjr2499, the general consensus would be that there is not enough water pressure. A few things you can check first is the fill valve and expansion tank. Fill valves are usually set between 12 and 15 pounds. The expansion tank is around the same as well. The expansion tank is used to keep the pressure in the boiler system regulated. Check to assure the expansion tank has the correct pressure as is stated on the tank. You can use a bike pump. Then, if the fill valve has a bypass on it; you can carefully fill the system. Be sure to check the pressure is not getting too high. House pressure is usually 65 - 110 psi. The boiler should have a split temp/pressure gage on it so keep it in a safe range. Grab a second person to sit next to the radiator with the bleeder valve open. See if air can be heard when the bypass is opened. If the system begins to fill when the bypass is opened then you know the fill valve is faulty. Note: I don't recommend holding the bypass open fully and any longer than is needed. If it starts filling, then only use the bypass as long as it takes to fill the second floor radiators. (Assuming this is an emergency) If the expansion tank does not have pressure then you know the expansion tank is bad. One other possibility is the water main valve feeding your boiler. If it is a gate valve, they work on a spring mechanism, it might be stuck more closed and limiting the water flow into the system. Opening and closing the valve a few times or even tapping might jar it loose. This is not professional advice, but some steps I would take if I were in your shoes. Hope it helps
What if your fill valve, expansion tank and your pressure relief valve all have different psi? Would you recommend running the boiler for a few minutes before draining, just to remove any sediment?
Hi @cancerking9416. You could surely run the boiler for a little bit prior to draining the system. I am not really sure how much that helps in removing any sediment, but if it loosen any bit then it is worth the effort.
Never in 40 years have I flushed the water out of a hydronic heating system whether radiators or baseboard you just introduced a whole bunch freash water that contains corrosive properties but the water that you drain from the system is stagnant with no corrosive properties. Folks unless you have some serious problem going on this is a bulshit service like changing your blinker fluid
Never thought to start from the first floor I always thought starting from the top high floor first thanks a lot you did a great job explaining
Thank you @ezramamiye5522 for the comment! Glad you found the video useful.
My 2nd floor won’t push out air and I still don’t have water coming out of them. My first floor all of those are fine but my 2nd floor none of them will push air or water coming out is there not enough pressure???
Hi @ajpabosjr2499, the general consensus would be that there is not enough water pressure. A few things you can check first is the fill valve and expansion tank. Fill valves are usually set between 12 and 15 pounds. The expansion tank is around the same as well.
The expansion tank is used to keep the pressure in the boiler system regulated. Check to assure the expansion tank has the correct pressure as is stated on the tank. You can use a bike pump.
Then, if the fill valve has a bypass on it; you can carefully fill the system. Be sure to check the pressure is not getting too high. House pressure is usually 65 - 110 psi. The boiler should have a split temp/pressure gage on it so keep it in a safe range. Grab a second person to sit next to the radiator with the bleeder valve open. See if air can be heard when the bypass is opened. If the system begins to fill when the bypass is opened then you know the fill valve is faulty. Note: I don't recommend holding the bypass open fully and any longer than is needed. If it starts filling, then only use the bypass as long as it takes to fill the second floor radiators. (Assuming this is an emergency) If the expansion tank does not have pressure then you know the expansion tank is bad.
One other possibility is the water main valve feeding your boiler. If it is a gate valve, they work on a spring mechanism, it might be stuck more closed and limiting the water flow into the system. Opening and closing the valve a few times or even tapping might jar it loose.
This is not professional advice, but some steps I would take if I were in your shoes. Hope it helps
What if your fill valve, expansion tank and your pressure relief valve all have different psi? Would you recommend running the boiler for a few minutes before draining, just to remove any sediment?
Hi @cancerking9416. You could surely run the boiler for a little bit prior to draining the system. I am not really sure how much that helps in removing any sediment, but if it loosen any bit then it is worth the effort.
@ thanks
Never in 40 years have I flushed the water out of a hydronic heating system whether radiators or baseboard you just introduced a whole bunch freash water that contains corrosive properties but the water that you drain from the system is stagnant with no corrosive properties. Folks unless you have some serious problem going on this is a bulshit service like changing your blinker fluid
Hi @larrycurrier290. Thank you for your message.