How do you set a froststat ?

[SparkyTris]

Just about to leave a house empty for a few weeks. The property has main dwelling house with the boiler inside but there is an "annex" bedroom with one rad. frost-stat in the entrance to said annex.

I know that the froststat setting is wrong because the cover fell off it and somebody thought it was a roomstat for a while.

Also, the plastic adjusting knob for the stat has been broken, so it will push onto the splined shaft in any orientation - so I can't trust the numbers printed on it (presumably these are just a guide, and the unit was never calibrated)

The frost stat operates the system when the I rotate the knob back & forth, as it passes the current ambient of about 8C.

Is there a trick to setting it? obviously I dont want it set too high & burn loads of fuel, neither do I want it set too low and risk pipe damage.
ttnx fer help

 

[oilman]

VERY unlikely you will get any damage anyway, set it about 10 deg (rotation not temperature) up from minimum.

 

[SparkyTris]

Thanks a lot.

 

[wilhelm]

get a new one? youll get change from a tenner......

or just a pipestat, saw one on a new build, and i thought...thats crafty. no froststat just pipestat. in fact, im thinking that could be the future.

 

[oilman]

Not sure about this frost stat business. A frost stat will respond early to a temperature drop, then it's normal to have a pipe stat to switch things off when the pipes warm up to 20 or so.

 

[wilhelm]

pipestat just monitors boiler return temp. will switch on when say set to 10C . (make on drop) does same job. and puts all frostat manufacture out of business.
who needs 'em??