Thanks.
Do you know whether it is possible to wire the boiler through the controlable thermostat and the high level stat but the solar only through the high level stat - I don't want the power to the solar pump being cut at 60 degrees. I am being told this isn't possible - if this is right I am puzzled as to why Navitron/Newark are supplying the cylinder with only one dual stat (and why they are apparently not getting regular requests for an additional stat)
They must have an E grade in electrical installations if thats the answer given to you. The adjustable stat and high level are looped with a link. Remove the link and wire them seperately.