Ranco K50 Thermostat Manual |top|

Note: Always check the sticker on the control body to confirm the specific temperature range of your unit before installing.

On the side or bottom of the control body, you will see three terminals, typically numbered:

Follow these steps from the official service manual:

If you are replacing an existing unit or engineering a new system, the specifications found in the original manual are critical for safety and performance.

Most K50 thermostats have 3 or 4 terminals labeled:

SPST (Single Pole Single Throw), typically "close-on-rise". Electrical Rating: 6A or 16A at 250V AC.