Thermostat Z-Wave Specification
June 26, 2019
Building 36 Technologies
An Alarm.com Company
20
7
Basic Command Class Handling (Energy Saving Mode)
The basic command class can be used to change the thermostat recovery settings. The value
of zero (0x00) indicates the recovery setting is efficient. The value of 1 through 99 (or 255) will
set the recovery setting to comfort. The default value is comfort.
If the thermostat is set into efficient from comfort, it will increase the cool setpoint by 3
degrees Fahrenheit and decrease the heat setpoint by 3 degrees Fahrenheit. If the setpoint
change causes the setpoints to be within 3 degrees Fahrenheit of eachother, the setting is
ignored. For example, if the heat setpoint was 72F and the cool setpoint was 68F in comfort
mode and the thermostat was set to efficient, the resulting heat setpoint would be 69F and the
cool setpoint would be 71F. This violates the minimum setpoint differential of 3F.
If the thermostat is set to comfort from efficient, it will decrease the cool setpoint by 3 degrees
Fahrenheit and increase the heat setpoint by 3 degrees Fahrenheit. If the setpoint change
causes the setpoints to exceed the minimum or maximum setpoint values, the setting is
ignored. The minimum setpoint is 35F and the maximum is 95F.
