EvoControl Ventilation - Counterflow
Models: C125T G1, C250T G1
7.1.4 Features
400 ECO mode
Activation of the function.
The heat recovery rotor (VVX) setpoint is equal to the set temperature setpoint in the current operating mode and the reheat gets a new temperature setpoint according to parameter 401.
The temperature setpoint of the reheat can never be higher than the temperature setpoint of the heat recovery.
The function is then switched on in Menu 1.
401 Setpoint ECO
Fixed setpoint for reheat.
410 Hot start temperature
Warm start when the outside air is lower than the set value.
411 Hot start time
Delayed start of supply air fan and blocking of internal electric battery, overpressure timer and forced timer for the set time when the temperature falls below the value in parameter 410.
Always warm start in at least 30 seconds regardless of temperature and time.
420 Fire function
The function is activated when the end between terminals 9 and 10 is broken.
Selectable in four modes:
- Supply air fan stops, extract air fan stops. Damper closes. Heating* and cooling outputs off.
- Supply air fan stops, extract air fan 100 per cent. Dampers open. Heating* and cooling outputs off.
- Supply air fan 100 per cent, extract air fan stop. Damper opens. Heating* and cooling outputs off.
- Supply air fan 100 per cent, extract air fan 100 per cent. Dampers open. Heating* and cooling outputs off.
*Heat output 100 per cent with water coil.
430 Cooling forcing
Activation of the function.
Capacity increase of fans in case of cooling demand.
431 Refrigeration increase
With the cooling control signal, the capacity of the supply air fan and extract air fan in the current operating mode in % is increased by the control signal with the value set in the parameter.
440 Free cooling via outside air
Activation of the function.
The function means that when the conditions of parameters 441 and 442 are fulfilled, the supply air gets a new setpoint equal to the minimum limitation according to parameter 262.
Bypass damper opens.
441 Free cooling at outdoor air temperature
Free cooling allowed at outdoor temperature higher than set value.
442 Free cooling at exhaust air temperature
Free cooling start temperature when the extract air temperature exceeds the set value.
450 Defrosting
Function activation. During the defrost period (parameter 452), the unit defrosts at regular intervals (parameter 453) if the outdoor air temperature is lower than the set value (parameter 451).
The function means that the supply air fan runs in 20% and the extract air fan runs in at least 50% and the exhaust air setpoint is increased according to parameter 454.
Indicated by all three symbols being displayed 
451 Defrosting start at Utetemp
Defrosting starts at outdoor temperature.
452 Defrosting time
Defrosting time in minutes.
453 Defrosting interval
Defrosting interval in minutes.
454 Temperature rise Exhaust air
Activation of the function.
455 Winterisation
Function activation. Winter mode means that, at a certain outdoor temperature, the fans’ capacity is reduced.
When the outdoor air temperature is lower than the set start temperature, fan adjustment starts and has full adjustment at 10°C lower temperature than the start temperature.
456 Winter operation Start temperature
Winter operation starts at outdoor temperatures lower than the set value.
457 Winter operation Fan Supply air
Max fan adjustment supply air.
458 Winter operation Fan Exhaust air
Max fan adjustment exhaust air.
460 Overpressure timer (stove timer)
The supply air fan runs at 80% capacity and the extract air fan at 20% capacity for the duration specified in the parameter. After the set time has elapsed, the system returns to the previous operating mode.
461 Forcing hours
Operation mode forcing active for the time set in the parameter.
Returns to the previous operating mode after the set time.
465 Presence, switch-off delay
Activation of the function. When the presence detector (accessory) detects presence on the relevant external input, the unit changes to that operating mode. Returns time set operating mode after set time.
Can be overridden with panel and other external inputs to a higher operating mode.
466 Attendance, Operating mode
Minimum operating mode when presence is detected.
467 Attendance, Operating Mode Return
Return to operating mode after presence not recorded.
470-472 Prioritisation
Operating mode:
- Fire function, terminals 9 & 10 open.
- Stop, terminal 7 & 8 open.
- Forced, terminals 1 & 4 closed.
- Comfort, terminal 1 & 3 closed.
- Spar, terminal 1 & 2 closed.
- Display.
If the priority order, parameter 470-472, is set to “Priority”, the order as above applies if more inputs are active.
If the priority order, parameters 470-472, is set to “Last input”, the last command is valid until the next command.
If parameter 470 is “Prio”, parameters 471-472 are automatically set to “Prio” as well and become hidden in the control panel.
480 Standby / Emergency
Back-up operation:
- Supply air fan = Off.
- Exhaust air fan = On (capacity according to factory settings in each operating mode in %).
- Rotor = On.
- Internal electric battery = Off.
- For water coil = Normal regulation.
The unit is running EJ in standby mode in case of an alarm on the exhaust fan, low return water temperature or sensor error on the return water sensor.
483 OVK Control
At OVK, mandatory ventilation control. Activation of this function means that the fans always run according to the set fan values and no functions such as defrosting can take place.