13
Menu
Description
Factory setting and
(max. / min values)
EC - Regulator
Fan. reduc
= supply air fanspeed is reduced gradualy to maintain
discharge air temperature sensor (T4) at setpoint value EC2
Rotor reduct.
= rotorary heatexchanger RPM is reduced gradualy
to maintain discharge air temperature sensor (T4) at setpoint
value EC2. The deicing process will start automatically depending
on the indoor humidity measured and the outdoor air temperature.
minimum RPM for rotor in deicing mode = 1 RPM.
Fan/rotor reduct.
= rotorary heatexchanger RPM is reduced
gradualy to maintain discharge air temperature sensor (T4) at
setpoint value EC2. The deicing process will start automatically
depending on the indoor humidity measured and the outdoor air
temperature. minimum RPM for rotor in deicing mode = 1 RPM.
If setpoint EC2 is not reached in due time, supply air fanspeed
reduction will assist in reaching the setpoint EC2.
EC2 - Frost reduction
Adjustable setpoint for frost protection strategy EC1
EC3 - Regulation method
T1 Supply air
= air borne climate control is based on supply air
sensor
T7 Extract air
= air borne climate control is based on extract air
temperature sensor
EC4 - 0-10 volt output selector
Bypass
= PCB 0-10 volt output L11 is adapted to operate 0-10 volt
bypass motor
Rotor
= PCB 0-10 volt output L11 is adapted to operate rotoary
heatexchanger
Watervalve
= PCB 0-10 volt output L11 is adapted to operate 0-10
volt water control valve for waterbased reheater.
EC5 - Help function Relay H17.
Set point Function
0
The relay is off.
1
The relay is on when the system is running. This can, e.g. be used
to open and close the outdoor air damper and the discharge air
damper.
2
The relay is on when extra heat is required or when the circulating
pump should run when heating with water reheating is required.
3
The relay is on when the “Change filter” alarm is active. This can
be used to activate an external alarm.
4
The relay is on when extra cooling is required. This function is
used if a preheater is also fitted to the system.
5
The relay will be on if one of the following two conditions are
met:
Brine Preheat function
• The outdoor temperature, sensor T9, is lower than the value
configured in EC8 (frost protection temperature, typically set
at 5°C).
Brine source cooling
• The outdoor temperature, sensor T9, is >15 °C and the
roomtemperature is > se 1 °C
EC2: 0
(-10 - 10)
EC3: T7 extract air
(T1 Supply air / T7
Extract air)
EC4: Watervalve
(watervalve/rotor/
bypass)
EC5: 0
(0 - 6)
