I've recently replaced my Honeywell DT200 with a Drayton Digistat +3 as I wanted a programmable unit (don't like coming home from work to a cold house 
)
This seems to work fine, i.e. it switches the heating on and off when it gets cold and hot, however I wanted to confirm whether the behaviour of it is normal.
With the Honeywell set to, lets say 21, the heating would run until it got to 21.5 then would switch off, and then would come on again when the temperature dropped to 20.5, as you would expect from a basic thermostat. Naturally there is a bit of additional temperature increase after the system has switched off as the radiators are still hot.
With the Drayton, lets say you set it to 21 when the house is currently 16, it will run constantly until the temperature reaches around 19 and then will switch off. After this the system will cycle on and off, at a guess roughly 30% on and 70% off, gradually increasing the temperature until it reaches 21, minimising any additional increases once it's upto temperature. Once upto 21 the heating will come on for approximately 2 minutes at a time, probably once every 20 minutes, and the temperature will remain pretty constant and a lot closer to the set temperature than with the Honeywell.
While this gives a much more accurate and stable room temperature I've never seen this kind of behaviour from a thermostat before, is this normal for this particular model? Will this cause more wear and tear on the boiler with it cycling on and off a lot more and often for just a couple of minutes, or am I concerning myself over nothing?
Oh, and sorry for the excessively long post
)This seems to work fine, i.e. it switches the heating on and off when it gets cold and hot, however I wanted to confirm whether the behaviour of it is normal.
With the Honeywell set to, lets say 21, the heating would run until it got to 21.5 then would switch off, and then would come on again when the temperature dropped to 20.5, as you would expect from a basic thermostat. Naturally there is a bit of additional temperature increase after the system has switched off as the radiators are still hot.
With the Drayton, lets say you set it to 21 when the house is currently 16, it will run constantly until the temperature reaches around 19 and then will switch off. After this the system will cycle on and off, at a guess roughly 30% on and 70% off, gradually increasing the temperature until it reaches 21, minimising any additional increases once it's upto temperature. Once upto 21 the heating will come on for approximately 2 minutes at a time, probably once every 20 minutes, and the temperature will remain pretty constant and a lot closer to the set temperature than with the Honeywell.
While this gives a much more accurate and stable room temperature I've never seen this kind of behaviour from a thermostat before, is this normal for this particular model? Will this cause more wear and tear on the boiler with it cycling on and off a lot more and often for just a couple of minutes, or am I concerning myself over nothing?
Oh, and sorry for the excessively long post
