Optimal Start: learns how long it takes your system to reach the programmed temperature.
It turns on the heating system earlier to make sure it’s comfortable at the scheduled time.
Optimal Stop: Saves energy and money by switching off a little bit earlier than the normal
programmed time. If the home is up to temperature, it will not notice the effect on the
temperature, but will show a difference in the fuel bill.
Delayed start: Saves energy by slightly delaying the start of heating depending on the
difference between the scheduled temperature and the actual room temperature
OpenTherm® is a manufacturer independent communication protocol between modulating appliances (boilers, air
heaters and heat recovery units) and room thermostats.
Via the OpenTherm® protocol, the Receiver box of the T6 / T6R thermostat constantly communicates with the connected
appliance.
Modulating
The T6/T6R thermostat controls, via the Receiver box, the OpenTherm® communicating appliance modulating. This
means that, depending on the heat demand, the burner capacity is adjusted in the appliance. This creates a very accurate
control of the room temperature.
On top of that, this method of temperature control is more energy-efficient and environmentally friendly.
Low Load Control
When the home is at its comfort temperature or if the heat demand of the home is so low that the burner's capacity is
reduced to about 20-30% of the total capacity, the thermostat switches from modulating control to a on/off cycling, the
so-called low-load control.
During the low-load control, it is continuously calculated what the optimum on and off time of the appliance should be,
so that an accurate control of the room temperature is achieved.
Hot water control
Most Combi-boilers have a small internal storage for hot tap water. By keeping a number of liters of hot water, the
appliance can supply hot tap water directly without having to heat it up first. With a longer period of none use or absence,
for example sleep or holiday, the hot water storage does not have to be kept at a high temperature.
The T6/T6R thermostat can provide additional savings here. With the last programmed period (sleeping)
the hot water status can easily be switched to a saving level or completely be switched off.
With these Combi-boilers, a menu "Hot water during sleep" (on/off) will be available in the installer menu (page 6).
OpenTherm® data
De T6/T6R thermostat offers the ability to view some appliance data via de OpenTherm® communicatie.
See table on page 6 which data can be viewed.
Note: Depending on the connected appliance, more or less data is displayed on the T6/T6R thermostat and certain
settings of the appliance may or may not be changed from the thermostat. Refer to the instruction manual of the
appliance for specific information.
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