DIY Doctor

problem with over pumping

Postby barry diebelius » Wed Jan 16, 2008 2:56 pm

i have a problem with pumping over in the header tank. i cannot raise the tank any higher as it is already at the top of the rafters,the boiler and the pump are located in the loft as well.
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Simply Build It

Postby marrtin » Wed Jan 16, 2008 8:47 pm

Move the cold feeder pipe to a position closer to the expansion pipe (within a foot). The only reason you get an overflow or air sucked in is if there is a pressure differential between the two. Putting them closer removes the possibility of this occurring.
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