Minor Central Heating Question

[delb0y]

We have a system that heats a tankful of water when the water heating switch / timer is on - generally an hour or so in the morning and again in the evening.

The radiators come on for a little longer morning and evening, controlled by a separate timer (albeit in the same physical switch-unit).

I always thought that if all the hot water had been used, and the radiators were on, the system would be intelligent enough to spot that that lack of hot water and, as it was burning gas to heat the radiators, it would heat some more hot water for the tank at the same time - irrespective of whether the hot water switch was on or off.

Not sure this is happening, though. Seems I have to actively turn the hot water to the on position to heat the water as well as the radiators. It's not a biggie, but I'm trying to work out of this is a fault or not?

Cheers
Derek

 

[MontyVeda]

My very old and archaic system allows me to just have the hot water on, or the heating and hot water. Since the heating relies on hot water, it can't heat without it.

That probably doesn't help though. Can you google an instruction manual for your system?

 

[graham bowers]

Assuming its a fully pumped system with a diverter valve (as is mine) this is not a fault.

 

[Levo-Lon]

As above..
If the diverter was faulty you will find you have no hot water

 

[twentysix by twentyfive]

It's all working as it should @delb0y

 

[delb0y]

Cheers guys :-)

 

[irw]

My very old and archaic system allows me to just have the hot water on, or the heating and hot water. Since the heating relies on hot water, it can't heat without it.

That probably doesn't help though. Can you google an instruction manual for your system?

Count yourself lucky...when we moved into our house just under two years ago, hot water and central heating both could only be on together. No valves at all ya see, just t-splits... :s

Since then I've rewired and replumbed the whole 'bottom end', and now have separate control of hot water, downstairs rads, upstairs rads, with a couple of pipes standing by to feed the under floor heating I'm currently putting in...! S-Plan to the maxx!