12
Accessories
Electrical pre-heating element for frost protection of the unit
CO
2
sensor
Expansion PCB
EM-box
DTBU damper
If your ventilation unit is not a Polar version with an integral pre-heating element, we recommend that you
purchase an external pre-heating element as frost protection of the ventilation unit.
During prolonged periods of frost, the high efficiency counterflow heat exchanger will ice up. To prevent ice
formation, we recommend that you install an electrical pre-heating element.
The pre-heating element consumes limited energy and it ensures efficient heat recovery without periods of
defrosting the counterflow heat exchanger. You thereby achieve an overall reduction in energy consump-
tion.
If you want to adjust the fan speed level in accordance with the level of use of the dwelling/building (amount
of people), you can retrofit a CO2 sensor. Nilan’s CO
2
sensors calibrate automatically.
On the control panel, you select the CO2 level you want. If this level is exceeded, ventilation will automatically
increase.
An expansion PCB extends the functions in the control system so you can control various accessories.
Under “Electrical connection accessories” you will be able to see which accessories require an expansion PCB.
If you want to run the cooker hood via the ventilation unit, in some cases there may be insufficient air for
cooker hood extraction.
If you install an EM-box, you can regulate the extracted air when the cooker hood is in operation, so that less
air is drawn from, for instance, the bathroom and the utility room. This will allow enough air for the cooker
hood to extract sufficiently.
The EM-box is fitted with a metal filter that cleans the air in the cooker hood of grease particles efficiently. It
thereby protects the ventilation unit.
If there is insufficient space for mounting an EM-box in the installation, you can achieve the same effect by
controlling the extract air with a DTBU damper.
You then have to adjust the duct system yourself with a connection to the cooker hood.
To Next Page
Loading...
Need help?
General
