I tried to purge them and on the first floor I got some air and then water. Upstairs I heard a hiss and it stopped with no water. I have good water pressure in the basement. All valves are open on radiators and in the basement. Radiators upstairs are hot on the bottom showing hot water is flowing in them. The heater works and the water pump is working and the thremostat works. All valves have been second checked to make sure they are open. How do I measure the water pressure and how much do I need to get it up to the second floor.
2006-10-29 10:30:27 · 4 answers · asked by blue_eagle74 4 in Home & Garden ➔ Do It Yourself (DIY)
Cold water is denser so it doesn't mater if boiler is hot!The water pressure is read at the boiler there is a gage tied into the boiler it will be located on the sides , top, in the burner compartment, or in the pipe just leaving the boiler. the pressure should be 12psi to 15 psi cold. add about 3psi if hot. the pressure is regulated by a pressure reducing valve, its tied into a domestic water line. most come set to 12psi there my be a lever on the top of the pres reducing valve. this is a fast fill, lift it and extra water is added to system. if no lever.there is a flat set screw w/a nut on it. this will adjust the pressure also.only tune this screw 1/2 turn at a time and allow water to stop entering boiler, then ck pressure.if you have someone 2 watch the pressure and maintain it while u bled do that. I usually bleed at 20psi.w use of fast fill on p reduce valve. don't try this if there is no fast fill!!! then i will reduce the pressure at the boiler drain. when done bleeding. if no pressure in boiler the strainer is clogged in the pressure reducing valve. or its just shot .good luck
2006-10-29 12:14:11 · answer #1 · answered by Bagnel 1 · 2⤊ 0⤋
You need to add some more water to the system. Usually for a 2 story house, the factory setting of 12 lbs. on the pressure reducing valve is fine. The valve may be stuck or clogged and not letting water into the system. Or it may need adjusting. There should be a gauge on the boiler to read pressure at the boiler. Make sure it is at least 12 PSI.
After the pressure is up, you should get flow through the top floor radiators. You may have to bleed them again and add more water to the system. There should be a bypass installed parallel to the pressure reducing valve. If not, loosen the nut on top and slowly turn the screw clockwise until you hear water going through it.
2006-10-29 12:13:43 · answer #2 · answered by Obsean 5 · 1⤊ 0⤋
bypass to the boiler and with the main water shutoff drain the gadget . different decision is to bypass away the warmth on at approximately 40-40 5 F. you should be soliciting for worry in case you don`t drain it .
2016-12-08 23:34:18 · answer #3 · answered by ? 4 · 0⤊ 0⤋
bleed ALL radiators with furnace on and hot, start at highest point and bleed EVERY one till water comes out and work your way downstairs... then goback and do again tomake sure
2006-10-29 12:01:51 · answer #4 · answered by Anonymous · 0⤊ 0⤋