The Boost Function - LightwaveRF LW921 Instruction Manual

Device setup

The Boost function

Pressing the Boost button sets a temporary target temperature 1.5 degrees
above the current temperature for the duration of 1 hour. If there is a target
temperature higher than the current temperature already set, pressing the
boost button will match this temperature.
Pressing the button twice boosts the temperature for 2 hours, three times 4
hours, four times 8 hours, and the fifth press will cancel the boost function. An
active boost function is denoted by a sun symbol on the display. It can be
cancelled at any time by pressing the standby button (press twice to return
to normal running mode).
Setting a target temperature
The arrow shaped buttons on the Thermostat allow you to manually change
the current target temperature. Tap the up or down buttons to move the
temperature in 0.5 degree increments. The new target temperature will
remain active until standby mode is activated, the mode button is pressed to
change modes, or the next 'heating cycle' in the running schedule is initiated
(explained in next section). These actions will revert the target temperature
to the current existing pre-sets. Pressing the 'Display' button allows you to
view the current target temperature.