The mode runs in cycles, with their length measured as number of cycles
per hour. During normal use, it is difficult to notice the difference in the way
the heating system runs. However, it is noticeable that the thermostat runs
for a shorter period of time when room temperature starts approaching the
set temperature. Once the set temperature is reached, the operating cycles
become shorter to maintain the temperature. TPI calculates the speed at
which the room loses heat and prevents the room from getting colder by
activating heating as needed.
Setting CHRONO (TPI) Cycles
In heating mode, the CHRONO function can be set to 3 or 6 cycles per hour.
3 cycles are recommended for controlling underfloor heating or controlling
a heat pump.
6 cycles are recommended for controlling a gas boiler or a zone valve.
Temperature Differential Setting
If you turn off the CHRONO function, the thermostat will activate/deactivate
based on the temperature differential.
The temperature differential (hysteresis) is the difference in temperature
required for switching the system on and off.
The differential value is 0.4 °C.
If, for example, you set the temperature in heating mode to 20 °C, the
thermostat activates heating as soon as room temperature drops to 19.6 °C
and switches heating off when temperature reaches 20.4 °C.
Available Functions in COOLING Mode
cooling mode on
delay off
4 minute delay
°F unit of temperature
1
2
3
4
9
ON heating mode off
delay on
2 minute delay
°C unit of temperature