Reversed flow

jackecole · 16 Mar 2011

Has anyone heard of this before? Apparantly it's to do with the old W Plan, 3 port divertver valve.

Is this when the valve stickins in the htg port open position and so hot water then when on heats up the rad circuit?

seco services · 16 Mar 2011

you mean reverse circulation.
can happen on w, s, y plans.

when you have 2 radiator circuits joining the primary return.
both radiator circuits need to join together then join your primary return
need to follow the 3 Tee rule.

45yearsagasman · 16 Mar 2011

A 3port valve passing to heating because of siezing is just that and nothing to do with reverse circulation,which is a piping design fault.Often happens when extra rads are added to a system and the return is connected in the wrong place.

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Reversed flow

jackecole

seco services

45yearsagasman

DIYnot Local

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