How to use the ADC T40K Smart Thermostat HD

To change the temperature setting (i.e., Away, Home, Sleep, Custom, etc.) an interval is set to, tap the and then tap the desired temperature setting to change it to.

The Thermostat Lock option locks all physical control of the thermostat so that it can only be changed from a computer or mobile device. A partial lock allows setpoint changes, but prevents mode changes on the thermostat.

Thermostat Fan Schedules are used to automatically control the HVAC fan in your home to help save on energy costs while you are away and keep you comfortable while you are home or asleep.

To prevent the circulation of smoke and poisonous gas or potential HVAC system damage, a thermostat Fire Safety rule automatically turns off the HVAC system if a fire or carbon monoxide alarm is reported.

The thermostat temperature swing is the number of degrees above (for cooling) and below (for heating) the target setpoint the HVAC system allows the temperature to fluctuate before cycling back on.

: If the swing is set to three degrees, and the system is in Heat Mode with a setpoint of 24°C, the thermostat waits until the in-home temperature is 21°C before heating the home back to 24°C. This results in the thermostat running fewer but longer cycles, which is generally considered to be more energy-efficient than running frequent shorter cycles, as you would see with a swing of one degree or less.

A Sensor Left Open Energy Saver rule can adjust a thermostat's setpoint or mode if a door, window or other sensor is left open for a specified duration.

Select one or more Temperature Sensors to directly control your HVAC system when there’s no thermostat schedule set. The HVAC system monitors the average temperature reported by the selected sensors and keeps the average steady at the target temperature.

: If the nighttime target temperature is 20°C, and all bedroom Temperature Sensors are selected, then the average of temperature across the bedrooms are maintained at 20°C.

Make thermostat schedules even more precise by assigning one or more Temperature Sensors to the Temperature Presets.

: Match the bedroom Temperature Sensor to the Sleep Preset, or the family room Temperature Sensor to the Home Preset. When you set up Temperature Sensors this way, the system can cool the right rooms in the house to the target temperature at the times they are in use.