Control radiators using thermostat dial?

blackstar

Hello all,

I am having a terrible time trying to figure this out. I am trying to put my radiators in the frost protection mode for 1 week so I am not heating up a flat while away. I called Vokera and one person said you CAN NOT control when the radiators come on using the thermostat. Another one said all you have to do is set the thermostat to a frost protection temperature to 5c. So I did this and tested it by turning the thermostat dial anti clockwise all the way until it reached 5c, it then flashed 5c and went back to showing the current temperature in my flat which is about 20.6. So I thought great, lets see if the radiators turn on now when it hits 7pm and they are due to come on as I have set them to come on at certain times (see pic). Then at 7pm all the radiators came on!!!! Why?? I thought they wouldn't turn on unless the temperature in the flat dropped to below 5c?

Anyhow the guy at vokera who, when I explained this said I must have been pressing something I shouldnt have been pressing and thats why the radiators came on???

I am confused?

I know I can just turn all the radiators down to the frost protection mode on each individual radiator but really wanted to know how to control them with the thermostat.

The other guy at Volerka who said the thermostat doesn't control the radiators, well how can that be as they come on at the times I have set them to on the thermostat? Or does he mean that I can control when they come on but I cant override it on the thermostat to turn them all off unless I make all the hours BLANK on the timer on the thermostat? 

(PS the picture of the black dial on the front of the boiler apparently is to control when the boiler comes on and nothing to do with the radiators or the thermostat) 

Please can someone help? thanks. 

grumbler

Thermostat controls the CH pump. If the temperature is above 5C the radiators have to remain cold, although the boiler can switch on for short periods.

That's, AFAIK, how the system is supposed to work in general.

Is it a combi boiler, i.e. hot water on demand, no hot water cylinder?

BUFF

https://www.youtube.com/watch?v=f_Imt0pWcfg