Installation manual

Coopra Advanced Heating Technologies Installation manual 40 EN
22
5.1.3. Central heating temperature regulation with
modulating thermostat (Opentherm) with or without outside
temperature sensor
Set point
The set point indicates whether there is a heat demand.
- Without an outside temperature sensor, the desired central
heating flow temperature (set point) is calculated by the
modulating room thermostat.
- With an outside temperature sensor, the measured outside
temperature is sent to the modulating room thermostat, which
uses it to calculate the desired central heating flow temperature
(set point).
Burner is on
• when the room thermostat is closed (heat demand)
• and when the actual flow temperature is 5°C below the
set point (desired central heating flow temperature)
• and after 3 minutes anti-recycling time, if applicable
Burner is off
• when the room thermostat is open (end of heat
demand)
• when the actual flow temperature is 3°C above the set
point (blocking)
• or when the actual flow temperature is 3°C above the
maximum permissible central heating temperature.
During the set central heating post-running time, the pump will
continue to run over the central heating circuit in low load.