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doc_tap_Equithermic_mode;


Heating modeCooling mode

doc_tap_HeatM;doc_tap_CoolllM;
Inputs
  • Outdoor temperature
  • Temperatures from zones
  • Outdoor temperature
  • Temperatures from zones
  • Humidity from zones
doc_tap_Inp;doc_tap_OutTemp;doc_tap_OutTemHu;
Output
  • Set point of virtual thermostat for primary circuit
  • Set point of virtual thermostat for primary circuit
doc_tap_Ootp;doc_tap_Setcirc;doc_tap_Setvirtualcirc;
Limits
  • Minimal / Maximal set point
  • Minimal / Maximal set point
  • Dew point limit (Early warning)
    Calculates minimal set point temperature based on highest relative humidity from all linked zone thermostats
doc_tap_Lim;doc_tap_MinMax;doc_tap_MinMaxDewCalTher;
PID correction(error)(error)
doc_tap_PIDc; doc_tap_(X);doc_tap_(XX);


For more information about cooling / heating modes, see Heating and Cooling modes.

doc_tap_moreInnfo;

How final set point is calculated

doc_tap_HowFinal;

Equitherm curve returns temperature of flow water based on outdoor temperature. Angle of the curve, parallel shift, temperature limits and adjustments based on data from thermostats are affecting the final results.

doc_tap_EqCurveReturn;

Angle

doc_tap_Angleee;

For floor heating systems, values between 0.2 and 0.8 are commonly used. Lower values are more suitable for high quality insulation.

Table below shows resulting set point temperature based on outdoor temperature and angle of the curve:

doc_tap_FloorTableCurve;

Outdoor temperature
doc_tap_OuTem;
Angle:-20ºC-15ºC-10ºC-5ºC0ºC5ºC10ºC15ºC20ºC
doc_tap_Angle;








0.2333232302927242220
0.4424038363330272420
0.6504845413733292520
0.8595652474237312620
1.0656157534740342720
1.2746964585244372820
1.5827670645850403020
1.75908477716354433220
2.0909084777060473420
2.25909088827565523620
2.5909090878070563820
2.75909090908473573820
3.0909090908677614120

E.g. if outdoor temperature is 0ºC and angle of equithermic curve is 0.6, resulting set point temperature is 37ºC.

doc_tap_outdoor_37ºC;

Parallel shift

doc_tap_Parallel_shift;

Increases or decreases the curve by defined value.

E.g. if set point temperature based on angle of curve is 37ºC, and parallel shift is set to 4ºC, resulting set point is 41ºC.

doc_tap_Increases_41ºC;

Adjustments based on data from thermostats

doc_tap_Adjustments_ther;

All zone termostats that are linked to equithermic smart rule are affecting the final result.

doc_tap_zone_term_ew;


Heating modeCooling mode

doc_tap_Heatm;doc_tap_Coolm;
Set point from zonesEquithermic curve will be shifted up if highest set point of zone thermostats is more than 22ºCEquithermic curve will be shifted down if lowest set point of zone thermostats is less than 22ºC
doc_tap_fZones;doc_tap_shiftup22;doc_tap_shiftdown22;
ResultResulting set point = Set point based on angle and parallel shift + Ratio * (highest zone setpoint - 22)Resulting set point = Set point based on angle and parallel shift + Ratio * (lowest zone setpoint - 22)
doc_tap_Res;doc_tap_setphig22;doc_tap_setplow22;
Dew point limit--Resulting set point can not be less than dew point temperature calculated from highest relative humidity in zones
doc_tap_Dewplim ;doc_tap_n;doc_tap_setpzones;

Example scenario for zone hydronic heating with equitherm regulation

doc_tap_Ex_hyeating_eq;

Example scenario for zone hydronic cooling with equitherm regulation

doc_tap_Ex_ cooling_eq;




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