This switch sits in the bottom of the rad so I guess it will monitor the water temp once it has been through the rad and is at its coolest point which in theory is probably the best place. The temp range is stated as 'Switches on at 82 Degrees and Switches off at 68 Degrees' I was wondering if I hooked this up to a relay would this would be adequate to control the fan on a freestyle or would I be better going with a manual temp switch which I can set myself? I can still fit a switch in parallel as a manual override.
Does 82 on and 68 off in the bottom hose sound about right?