can anyone provide an idiots guide to a Heatmiser thermostatic control for underfloor heating?

I need extra help with the frost control and how to override the timer day to day control to put on the heating continuously

View this post on my blog: http://madeinhome.info/can-anyone-provide-an-idiots-guide-to-a-heatmiser-thermostatic-control-for-underfloor-heating