Old Boiler, New Timer With Ch Only?

[user 23491]

Hi all!

We have moved into a place with a gas boiler from (I think) the late 1970s. It has an old dial timer with only 2 function positions - hot water only or hot water and heating. We don't use much hot water from the tank but it's a cold house so we have the heating on a lot. I am concerned about the amount of energy we're wasting on the hot water.

Would it be possible to change the timer to a modern one that will let us have 3 functions, so we could have heating only as well? I don't have a manual for the boiler, but the panel inside tells us the model "E Type RS series 2", number "RS 40/60", and the GC number 41-397-41. I can't find the GC number online anywhere.

Thanks for any help!!

Michael.

 

[Andy™]

if its a gravity system, then no. you cannot have heating without hot water. if its fully pumped then it may be possible

 

[Richard-the-Ninth]

I think you would also have to have a tank stat fitted, not just a case of change the timer, I would suggest it would save more money if you got a better boiler.

 

[ProDave]

If your hot water tank is well lagged, then all it will actually cost you, is whatever heat escapes from the tank.

So have a look at your tank.

If it;s a bare copper tank with a jacket on it, then even with a good jacket, it will leak a lot of heat. So best to consider a major upgrade to the system.

If it's a reasonably modern foam lagged tank, then that's much more eficcient, but still an extra jacket over it will reduce heat losses.

 

[Steve3948]

You could fit locally fed zone valve and cylinder stat so it shuts off when temperature reached.