2007-12-14 12:33:35 · 6 answers · asked by jerrycook88 1 in Home & Garden ➔ Maintenance & Repairs
off when pump is running it will create more air
2007-12-14 12:55:21 · answer #1 · answered by john c 3 · 0⤊ 3⤋
actually either... nice try guys but a standard operating pressure for a Hydronic system is about 12 P.S.I., and actually if the pump is running it will have a higher pressure just down stream of the pump and lower at the end of the system as it returns too the boiler...
with the system off, and in a static state the pressure will be 12 psi through-out the entire system... regardless if the pressure is 4 psi or 100 psi... the air will move to the highest point somewhere along the way and those points should be at the coin vents or the air seperator in the boiler room..
me... I prefer to do it while the system is shut down and the air has a chance to slow down and rise too the top of the heater... although... this is strictly preference but have done it both ways as the air will be there if it is in the system...
2007-12-14 19:55:15 · answer #2 · answered by Maken trax 4 · 0⤊ 0⤋
It is usually done when the pump is running as this is how the water circulates through the system If a valve is open there is less pressure at the valve and the air as it circulates tends to go to the least resistance. You can still open the valve with it off and any air that floated up to the highest point will sit at the top of the radiator and can be bled a little
2007-12-14 13:00:39 · answer #3 · answered by Bill 6 · 2⤊ 0⤋
Better with the pump off,.... but leave it for about an hour to allow the air to get to the top of all the units, and do the ones that are nearest to the pump first.
2007-12-15 11:35:06 · answer #4 · answered by John L 5 · 0⤊ 0⤋
on . you need the water pressure to force the air out,,
2007-12-14 16:01:34 · answer #5 · answered by William B 7 · 0⤊ 0⤋
on.
2007-12-14 16:41:39 · answer #6 · answered by Anonymous · 0⤊ 0⤋