Worcester digistat replacement?

frogglet

Not sure where the receiver actually is. The boiler is outside. Against the kitchen wall.
I'll have a look for it.

paulhwhitehead

Hi, sorry to hijack this thred, but i have the same room stat which is wireless and want to upgrade this to a smart (Alexa compitable)  one without the massive price tag of the usual big names, any suggestions please ? ideall one that simply  replaces this one, pair up the bluetooth and job done.

neilmcl

paulhwhitehead said:

Hi, sorry to hijack this thred, but i have the same room stat which is wireless and want to upgrade this to a smart (Alexa compitable)  one without the massive price tag of the usual big names, any suggestions please ? ideall one that simply  replaces this one, pair up the bluetooth and job done.

I suggest you start a new thread, this one is over 8 months old.

Elle011

frogglet said:

We have a Worcester digistat which is wireless. The boiler is an oil fired worcester heat slave. The digistat got dropped and the display is broken.
Does anyone know what the replacement is to buy?
They all seem to be called Drayton which look the same.

Hi there, I'm having the same issue with my identical thermostat. Did you get a replacement for yours? I'm not sure what to get, found this one complicated. Any advice much appreciated. Thanks Elle 

BUFF

1 thing to watch if considering replacement with something different is that is a Class IV thermostat i.e. it has some energy saving features (probably TPI).
A Hive for example, may be more convenient/easier to use but it is a Class 1 thermostat. i.e. less efficient than your existing so your boiler would use more fuel (only a couple of/few % though).

Bendy_House

BUFF, do you know if that Worcester unit is identical to the Drayton? Will it communicate?

If so, the cheapest solution would be to buy a good second-hand WB or Drayton 'stat unit on t'Bay, and use that until everything is upgraded. With care, you might even pick up a new one for not too much.

If you really want a change to an easier-to-use device, Elle, then App-control is as easy as it gets.

But that will almost certainly also require an upgrade of the receiver, so will obviously cost more.

If you look at the spec of your oil combi, even dropping WB themselves a line (probably the best thing), you should hopefully be able to find out if it's capable of finer control - Opentherm or whatevs. If so, and you are going to replace the control for an App device, then it'll almost certainly be worth the 'full' upgrade to that system too.

But, you need to know what the boiler is capable of. How old is it?

Drop WB an email, tell them your Digistat is kaput and that you are wondering whether to stick with the same, or is there a way of increasing the boiler's efficiency by going for a more advanced type of control.

BUFF, will an 'ordinary' boiler - not Opentherm and stuff - still benefit from a Class IV?

BUFF

Bendy_House said:

BUFF, do you know if that Worcester unit is identical to the Drayton? Will it communicate?

If so, the cheapest solution would be to buy a good second-hand WB or Drayton 'stat unit on t'Bay, and use that until everything is upgraded. With care, you might even pick up a new one for not too much.

If you really want a change to an easier-to-use device, Elle, then App-control is as easy as it gets.

But that will almost certainly also require an upgrade of the receiver, so will obviously cost more.

If you look at the spec of your oil combi, even dropping WB themselves a line (probably the best thing), you should hopefully be able to find out if it's capable of finer control - Opentherm or whatevs. If so, and you are going to replace the control for an App device, then it'll almost certainly be worth the 'full' upgrade to that system too.

But, you need to know what the boiler is capable of. How old is it?

Drop WB an email, tell them your Digistat is kaput and that you are wondering whether to stick with the same, or is there a way of increasing the boiler's efficiency by going for a more advanced type of control.

BUFF, will an 'ordinary' boiler - not Opentherm and stuff - still benefit from a Class IV?

I don't know if it is identical although the WB oem was certainly Drayton. I am sure that they can communicate at some level but whether they can use the finer modulation available via EMS (assuming that her boiler is EMS) ...
I do know that when I asked Drayton a few years ago re. Wiser on WB that they said then that it could not communicate at EMS level. Also, that when WB stopped selling another previous range of controls Drayton appear to have come to an arrangement with WB to supply the market themselves (these afaik only clip in to WB boilers https://www.draytoncontrols.co.uk/products/programmable-thermostats/lp-clip-in-controls-programmable).
Certainly worth contacting both Drayton & WB & asking the questions (especially if the Drayton 'stat can pair with the existing WB receiver assuming that it is a wireless 'stat).

Yes, an "ordinary" boiler will benefit from a Class IV thermostat as it's not just a simple on/off 'stat (like original Hive) but has some level of intelligence which will reduce fuel use (up to~10%) compared to a simple on/off 'stat . 
https://phpionline.co.uk/feature-articles/erp-control-classes/
https://support.salus-tech.com/portal/en/kb/articles/tpi

p.s. I note after further research that the current Hive V3 range (or some of it) may now be Class IV. 

macman

What is the point of having a programmer if you just rely on manual intervention to turn the heating on and off yourself? You can just do that from the boiler controls.
Apart for the inconvenience, it's likely to be very wasteful of energy, as you will inevitably forget to turn it off when not required or at temp.

BUFF

macman said:

What is the point of having a programmer if you just rely on manual intervention to turn the heating on and off yourself? You can just do that from the boiler controls.

That post was from March 2021. It's another necro'ed thread.