Thermostat Dip Switches :
On the back of the thermostat there are two small dip switches.
- CPH Setting or The Maximum ‘Cycles Per Hour’. This is the number of times per hour that your boiler turns On and Off in order to maintain a desired setpoint temperature. This is typically left at its default setting and not changed.
- The second switch on the rear of your thermostat can be used to change the span. The span is the accuracy with which the thermostat operates when displaying your temperature. You can increase the accuracy by setting the span to +/-0.25°C instead of the default of +/-0.5°C, meaning that your thermostat will be sensitive to a quarter of a degree temperature change and will activate/deactivate the boiler more frequently.
When you have selected your desired span setting, please insert two new Alkaline AA batteries into your thermostat and it will power up.