The T-8000 Remote Element Thermostat is designed for applications which require the sensing element to be located where extreme conditions do not permit controller mounting, or where operational adjustments to the controller would be inconvenient. This high volume (output) instrument is ideally suited for installations that require the controller to be mounted on a local control panel. The thermostat can be made to function as a direct or reverse acting instrument by changing position of the patented sliding control port. Repositioning the control port will also change sensitivity on proportional models and differential on two-position models. OPERATIONSAs the temperature at the measuring element increases or decreases, the liquid in the element expands or contracts at a linear rate. This will cause the system of flexure levers to open or close the control port. For a direct acting instrument, the sliding control port should be positioned above the mid-point on the slider rail.