24
the building, the room temperature remains
constant regardless of the temperature
outside.
The regulator introduced value for the heating
curve for underfloor heating:
external t. +10 -> preset t. = 24
external t. 0 -> preset t. = 28
external t. -10 -> preset t. = 32
external t. -20 -> preset t. = 36
and radiators system:
external t. +10 -> preset t. = 40
external t. 0 -> preset t. = 47
external t. -10 -> preset t. = 55
external t. -20 -> preset t. = 65
Guidelines for selecting a proper heating
curve:
- if at dropping external temperature, room
temperature increases, the selected heating
curve is too high,
- if at dropping external temperature, room
temperature also drops, the selected heating
curve is too low,
- if during frost, room temperature is proper
and too low when the weather is warmer, it is
recommended to increase heating curve
parallel shift and decrease the heating curve,
- if during frost, room temperature is too low
and too high when the weather is warmer, it
is recommended to decrease heating curve
parallel shift and increase the heating curve.
Poorly warmed buildings require setting
higher heating curves. Whereas for well
heating buildings, heating curve will have a
smaller value.
The regulator can increase or decrease the
preset temperature, calculated in accordance
with the heating curve, if it exceeds the
temperature range for the given circuit set in
parameters Min. temperature and Max.
temperature.
Frost protection
Frost protection function is applicable only to
active controller work modes: OFF or AUTO-
ECO. In AUTO-ECO mode, this function is
executed only during a night time decrease.
The function is activated in the menu:
Services settings → Protection → Frost
protection
Description of frost protection against
the external temperature sensor
readings.
When the external temperature drops below
3°C, an Frost protection delay, e.g. 4h must
expire. If after this time the external
temperature is still under 3°C, a heating
circuit pump will be activated for 30 minutes.
After 30 minutes temperature on the mixer
sensor will be checked and if the temperature
is lower than 13°C to preset temperature heat
source is set to Frost protection temp. value.
Turning off the pump and the heat source will
take place only after the external temperature
rises above 3°C. The pump circuit is also
activated when there is a risk of freezing
circuit.
Adjustable circuit.
When the external temperature drops below
3°C, an Frost protection delay, e.g. 4h must
expire. If after that time the external
temperature does not rise above 3°C the
heating circuit pump will turn on for the
duration of 15 minutes. After 15 minutes,
water temperature in the circuit will be
checked. If it is higher than 13 °C, the pump
will be stopped. If it is lower than 13 °C, the
pump will continue its operation and heating
circuit will be heated by a heat source up to a
Frost protection temp. value. The pump will
be stopped unless the external temperature
exceeds 3°C.
If the heating circuit must be turned on during
this period, instead of off the controller must
be activated for the heating circuit working
mode: OFF or AUTO-ECO.