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Oh.. in answer to the earlier question if on HW I put it on for an hour and it's hot - if I put it on with the heating even after 2 hours it's only warm!!

Hi all. couple of pics - system on boat: water in tank goes into pressurised system via pressure switch keeping it up to 3bar which is water to taps. There is another valve to the heating system with an expansion tank at 1 bar, hence the unvented hot water tank (no pic as it was ****ing down so...

It's unvented with a 3 port but it's on a boat so regulation kind of goes out the window. Will use the old valve I took off to match up against the movement of the new valve spindle to see how open the valve on each port is in each different position, and a general play around tomorrow. Thanks...

Working today and tomorrow but will test/take closer look Wednesday to see if I can figure it out based on above advice etc. Thanks for your input and I'll see what I can find - don't think there is a restricting valve but will look.

By balanced do you mean balance of the radiators or easier run for the water to head off to the radiators rather than the hot water? Radiators reasonably balanced and haven;t changed configuration of radiators for some time (added a small radiator a couple of years ago but didn't have this...

I replaced the valve for a new one a couple of weeks ago thinking it was the 'ball' in the valve that had worn out. Turned out it was a valve with solid metal cylinder thing that rotates ( can't describe it very well) The point being it did not appear worn out but had a new one (same design) so...

Hi all, I have the common problem of heating working fine but hot water only warm. I know the usual places to look starting with the 3 port valve etc. However having changed the valve and flushed the system problem remains. What I have noticed and worked out is the motorised actuator at first...

My Oil boiler (Bubble) fires then fails within 5 seconds. However if I then reset the 'lock out' button (it is not locked out - the red light is still flashing intermittently) the boiler starts up and runs normally for the heating period on the timer. When it needs to restart at the next...