Thermista-stat with timer

[martynhsmith]

Is it possibly to buy a Thermista-stat with a timer?

I have a Johnson and Johnson warm air central heating. We have a thermistor stat on the wall in the living room and a timer in the kitchen with the boiler.
I'm told its special - e.g not just an on off, the fans run at different speeds depending on the temp difference.

What I like to do is control temperature and time in the living e.g switch the heating on Saturday at 8am at 18' and at 4pm turn it up to 22'

Can I get one of these?

 

[stem]

Do you mean Johnson and Starley?

I have only seen a very few of these, but they were all fitted with J&S branded 'thermistorstats' fitted, as you say, they are a bit specialised. I believe though that I may have seen a system fitted with a J&S combined time/temp/controller, so you could perhaps check with them.

Whilst the standard programmable thermostats will allow you to select a different temperature at different times, they only provide a single on / off switching contact and not variable speed control.

It might be a bit impractical, but it might be possible to have two 'thermistorstats' set at different settings and use a timer to switch between the two of them.

Hopefully, someone else who is more familiar with these systems may be able to provide better help.

 

[ianmcd]

The warm air unit you have is a modairflow, you can not use the modern programmable room thermostats with them,never heard of J&S bringing one out that you could do that with, but what do I know , call J&S and ask if they have a programmable room thermistorstat suitable for use with a modairflow

 

[martynhsmith]

Thanks for the replies
Yes - I meant Johnson and Starley - Johnson and Johnson are baby wipes!

I went to there web site and asked the question!