Hi anyone have ideas on this one?
When hot water is run there is dirty water being drawn into the integral cold tank from the small topup pipe feeding the primary pressure tank.
This occurred after the system was switched off for a couple of months when the house was empty.
Does anyone know what method is used within the pressure tank that allows cold water to top it up when required but should not let it backfeed into the cwt, is it some sort of float valve or is it a designed air lock in an inverted cone (that is what it looks like in the Elson schematic).
If it is some sort of mechanical valve I wonder has it jammed with being idle and would forcing a couple of surges of mains water into the topup tube be liable to reset it.
If it operates by a designed air lock in an inverted cone, then has this one lost its air and can it be replaced by using a pump to force air in via the topup tube in the bottom of the cwt.
Any help and suggestions gratefully received, and ridicule of my engineering interpretation of the principles of the above will be taken with good cheer.
Cheers
Billy
When hot water is run there is dirty water being drawn into the integral cold tank from the small topup pipe feeding the primary pressure tank.
This occurred after the system was switched off for a couple of months when the house was empty.
Does anyone know what method is used within the pressure tank that allows cold water to top it up when required but should not let it backfeed into the cwt, is it some sort of float valve or is it a designed air lock in an inverted cone (that is what it looks like in the Elson schematic).
If it is some sort of mechanical valve I wonder has it jammed with being idle and would forcing a couple of surges of mains water into the topup tube be liable to reset it.
If it operates by a designed air lock in an inverted cone, then has this one lost its air and can it be replaced by using a pump to force air in via the topup tube in the bottom of the cwt.
Any help and suggestions gratefully received, and ridicule of my engineering interpretation of the principles of the above will be taken with good cheer.
Cheers
Billy
