can i fit this?

[stevediy2009]

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i have an old gas back boiler that is gravity fed for hot water and pumped for central heating. the hot water is getting 2 hot. i had a look and theres not stat on the hot water tank. i have a room stat that turns off the boiler and does the timeing. i want to know if i can fit a hot water tank stat that will turn a motorized valve so the hot water will stop heating? if i can do i need to use a three port one so i can divert the flow back to the tank or can i just put it to stop ?? the pump is alway on when the boilers running.

 

[jackthom]

If the pump is always on when the boiler is running it must be inconvenient in Summer when you only want DHW.

A fully pumped system with a 3-port valve will give you much more control and might also save a bit of money on fuel.

So there's the cost of a valve and a cylinder thermostat, plus a bit of re-plumbing and re-wiring. Plenty of help here if you are into DIY.

 

[namsag]

Or you could just turn the boiler stat down .

 

[gassafeman]

Just do as namsag said, or convert to a 'C' Plan.
Google it.

Paul.

 

[bengasman]

Upgrading to a y-plan or s-plan with a completely independent timer will drastically improve the performance, and save you money on the gasbill

 

[stevediy2009]

had a look at a c plan and thats what i am trying to do. just wasn't sure if u had to divert the gravity flow back to the boiler or just shut it off ?

Just do as namsag said, or convert to a 'C' Plan.
Google it.

Paul.

 

[Agile]

Whatever you do, the vent from the boiler to the pipe above the F&E tank must remain open all the time!

Tony