Kostrzewa Platinum Bio ecoMAX860P3-O TOUCH Manuel D'instruction page 61

8. Operation
• Setting the mixing valve with weather compensator, without room
temperature controller. Set Mixing valve outdoor temperature compen-
sation to ON. Select the outdoor temperature compensation curve as per
8.20. With Curve translation, set room temperature setpoint, using the
following equation: Room temperature setpoint = 20°C + heating curve
translation. The room thermostat can be installed in this configuration to
compensate the heating curve inaccuracy and if the heating curve value
selected is too high. Set the mixing valve temperature setpoint decrease
by thermostat to e.g. 2°C. When the thermostat is tripped (contacts
open), the mixing valve circuit temperature setpoint is reduced, and with
a orrectly set reduction value, the temperature increase in the heated
room is reduced.
• Setting the mixing valve with weather compensator and room tempera-
ture controller. Set Mixing valve outdoor temperature compensation to
ON. Select the outdoor temperature compensation curve as per 8.20. The
controller automatically translates the heating curve depending on the
room temperature setpoint. The controller relates the setpoint to 20°C,
e.g. for room temperature setpoint = 22°C, the controller will translate
the heating curve by 2°C, for room temperature setpoint = 18°C, the
controller will translate the heating curve by -2°C. In some cases, the
heating curve translation might require further adjustments. The room
thermostat in this configuration may reduce the heating circuit
temperature by a constant value, if the room temperature setpoint is
reached. The heating circuit temperature can be corrected as described
above (not recommended) or automatically. Do not use both functions
simultaneously. Room temperature is automatically corrected as follows:
Correction = (Room temperature setpoint – measured room temperature)
x room temperature coefficient /10 Mixing valve temperature setpoint
is increased by (22°C - 20°C) x15/10 = 3°C. Determine the correct Room
temperature coefficient. The higher the coefficient value, the higher
the boiler temperature correction setpoint. If set to „0", the mixing valve
temperature setpoint is not corrected. Note: if the room temperature
coefficient is too high, room temperature may fluctuate.
8.20 Outdoor temperature compensation
Depending on the measured outdoor temperature, both the boiler temperature
setpoint and the mixing valve circuit temperature setpoint may be automati-
cally controlled. With a correct heating curve, the heating circuit temperature
is determined automatically based on the outdoor temperature. With a correct
heating curve, the room temperature will be constant irrespective of the
outdoor temperature. Note: when selecting the heating curve, temporarily
exclude the room thermostat effect on the controller, whether the room ther-
mostat is installed or not, by setting the following parameter: Mixing valve 1
settings > Mixing valve room thermostat = 0.
If the room temperature controller is installed, set Room temperature
coefficient = 0.
Guidelines for correct heating curve settings.
• floor heating 0.2 -0.6
• radiator heating 1.0 - 1.6
• boiler 1.8 – 4
Heating and ventilation
outdoor temperature ˚C
• Guidelines for correct heating curve settings:
• if the room temperature increases with the decrease in outdoor
temperature, the heating curve value is too high,
• if the room temperature decreases with the decrease in outdoor
temperature, the heating curve value is too low,
• if at low outdoor temperature, the room temperature is correct,
and at high outdoor temperature, the room temperature is too
low - increase Heating curve translation and select lower heating curve,
• if at low outdoor temperature, the room temperature is too low, and
at high outdoor temperature, the room temperature is too high -
decrease Heating curve translation and select higher heating curve.
Poorly insulated buildings require higher heating curves, whereas properly
insulated buildings require lower heating curves. Temperature setpoint,
calculated based on the heating curve may be increased or decreased by the
controller if it falls outside the temperature limit for each circuit.
8.21 Nighttime setback settings
The controller allows setting time intervals for the boiler, heating circuits, DHW
storage tank and DHW circulation pump. The time intervals allow to set the
temperature setpoint reduction in a specific time interval, e.g. at night or when
the user leaves the heated room. The temperature setting may thus be reduced
automatically to increase heating comfort and reduce fuel consumption.
It is indicated with
To set the time intervals, set Enabled for the boiler and the heating circuit
to Yes.
Platinum Bio ecoMAX 860P User Manual – EN 07.22
61