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- 14 Dec 2012
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Hi, can anyone help as have a problem that is now driving me mad. Feeder tank is back filling both from vent and out feed. Hot flow is going backwards, through cold feed, but by passing cylinder. I have put in a very simple gravity system for hot water off a Rayburn. The feed from the header tank goes into the return via a tee on the lower part of the coil in the hot water tank. Open vent off a tee on the flow as it goes into the tank. The flow into tank is from top exit from Rayburn, return into lower pipe. I have put in automatic vents by boiler and by tank. What have I done wrong????