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RFRP
V2
Room Thermostat CP4
V2
OS (Optimum Start Mode)
When the thermostat is in Optimum Start mode, the thermostat will try
to reach the target temperature by the start time of the next program.
This is done by setting the Ti (time interval) on the thermostat in this
menu to 10, 15, 20, 25 or 30. This will allow the thermostat 10, 15, 20, 25
or 30 minutes to increase the room temperature by 1°C.
Ti can be set when OS is selected in the installer menu.
20˚C
To achieve the target temperature when the program starts, the
thermostat will read:
1. The Room Temperature (RT)
2. The Setpoint Temperature (ST)
3. The Target Temperature Dierence (TTD) is the dierence
between the setpoint temperature and the room temperature .
The time (in minutes) that it will take to overcome (TTD) is called
Optimum Start Time (OST) and its maximum value is 3 hours = 180
mins. This is subtracted from the start time.
As the temperature increases the thermostat will recalculate the OST if
the temperature is increasing too quickly.
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