Hello, I believe my central heating is sucking air in through the vent pipe. I am having to bleed 2 or 3 of my rads almost every week. Yesterday I decided to trace the source of the leak.
Each time the pump kicks in there is a rush of air that fizzes through it after a few seconds. Up in the loft I placed a half pint glass of water over the end of the vent pipe. When the pump kicked in the vent pipe sucked around a quarter to a half of the glass up an then dumped it back down. When the pump stopped it blew bubbles in the water. By the noises in the pipe it sounded as though the air was getting well below the loft floor.
So my questions are... Am I sniffing in the right area/is it possible? and could it be that the pump is to strong?
I'm using a SurePump SP65 with 12 rads in a four bed house and all of the radiators or in good condition and the water is clear.
P.S. It's been like this since I moved in last year.
Each time the pump kicks in there is a rush of air that fizzes through it after a few seconds. Up in the loft I placed a half pint glass of water over the end of the vent pipe. When the pump kicked in the vent pipe sucked around a quarter to a half of the glass up an then dumped it back down. When the pump stopped it blew bubbles in the water. By the noises in the pipe it sounded as though the air was getting well below the loft floor.
So my questions are... Am I sniffing in the right area/is it possible? and could it be that the pump is to strong?
I'm using a SurePump SP65 with 12 rads in a four bed house and all of the radiators or in good condition and the water is clear.
P.S. It's been like this since I moved in last year.