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AUTOMATION AND CONTROLLER FOR UNITS EVO-T; EVO-T COMPACT
OPERATION AND MAINTENANCE MANUAL
Group Name
Default
value
Description / Settings menu
Controllers
-
1 Kp_heating - heater regulator amplication
60s Ti_heating - integration constant of the heater regulator
1 Kp_cooling - radiator regulator amplication
60s Ti_cooling - integration constant of the radiator regulator
Summer/
Winter
PI cooling - possibility to activate the cooling regulator only in summer or summer and winter
30s Delayed switch-on delay - possibility to set the delayed switch-on delay for the cooling regulator
1 Kp_ll - supply regulator amplication (cascade controller)
45s Ti-supply - integration constant of the supply air regulator (cascade controller)
40°C
Tmax - maximum supply air temperature (cascade controller)
15°C
Tmin - minimum supply air temperature (cascade controller)
...°C
TsetBlowAct - current setpoint temperature of the supply air (cascade controller)
Recovery
-
450 s
Starting ramp – once the system is started, the 100% heat recovery is started with dropping ramp till current heat recovery actuation
resulting from the adjustment process
1°C Delta T start - required dierence between exhaust and outside temperature for recovery start
2°C Frosting limit – temperate below which the anti-frost function is activated
1 Kp_realise – gain of ant-frost function controller
30s Ti_realise – integration constant of ant-frost function controller
Defrosting of
the rotary heat
exchanger
50% Supply - degree of supply air control during defrosting
50% Exhaust - degree of supply air control during defrosting
180s Exhaust air limit - duration of defrosting
Water
heater
Preliminary
heating
15s Heating time 100% – primary heating time with 100% valve opening, independent from min, max ext. T
30s
Heating time scale – primary heating time with percentage valve opening dependent on the external temperature and the water return
temperature (if B8 sensor is activated)
Active Drop ramp – possibility to activate / deactivate the drop ramp for valve opening stage after primary heating
30s
Drop time – after system starts and primary heating occurs, the heater valve starts closing from the current opening resulting from the
external temperature scale to the opening resulting from the temperature control process signal
0°C Min Tout – minimum external temperature of valve control scale during primary heating
75% Min Tout valve – valve control during primary heating for external temperature equal to Min Tout
10°C Max Tout – minimum external temperature of valve control scale during primary heating
15% Max Tout valve – valve control during primary heating for external temperature equal to Min Tout
Pump activation
temperature
5°C Pump activation temperature – external temperature below which the circulating pump works all the time
Pump deactiv.delay 0s Pump deactivation delay – delay in deactivation of the water heater circulating pump
Minimum valve
opening
10%
Minimum valve opening – degree of minimum opening of the heater valve present during standstill and during work of the ventilation
unit, occuring at the drop of the external temperature below the Pump activation temperature parameter.
Frost water
Inactive Sensor B8 – heater protection activation through the return water temperature sensor (activation is possible in systems without an primary heater)
10°C Frost activation temperature – activation of Frost protection control on the water side in respect of external temp. lower than this parameter
15°C
Frost – Stop – return temperature threshold setting below which the system switches to heating mode (during standstill), connected with
blocking alarm A_ThHWwater
20°C
Frost – Start – return temperature threshold setting below which the system switches to heating mode (during work), connected with
blocking alarm A_ThHWwater
25°C
Control – Stop – heater water return temperature setting, valve is opened at low temperature, regardless of the main heater control
signal (during standstill)
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