24
Initial calibration
Introduction
In order to obtain the correct ventilation comfort level, as well as not damaging the
house structure, it’s important to adjust the amount of ventilation air going in to the
house, as well as extracting from the house.
This is done by adjusting the fan speed levels, in nominal mode (100% ventilation), that
is equals to fans speed three.
Fan speed four is an operation boost level, only active in 6 hours, thereafter the unit
switch down to prior previously used fan speed
Calibration tools
The unit can be adjusted by means of the SW tool, or using the keypad on the front.
In both options the air flows needs to be measured in order to calibrate the unit to the
counter pressure in the ducts connected. Dantherm recommend a small handheld me-
ter, Testo 510, that is perfect for this kind of measurements.
IMPORTANT
Fill 0,5 L water into the water trap, to assure no leakage through the drain prior to cali-
bration
Calibration
Follow these few steps to calibrate the units fan speed.
Step
Action
1
Press and hold the fan (2) and week program (4) until both LED flashes (5
sec.). The fan speed will change to speed 3 if not already
The unit is now in installer
2
Connect the ΔPa meter to supply direction spigots, according the label on the
heat exchanger cover.
3
Adjust supply air to Appropriate level according to local needs. Push and hold
bypass (1) and adjust up(4) and down (2) until correct level is measured.
4
Remove the ΔPa meter and reconnect to the extract spigots
5
Adjust extract air to Appropriate level according to local needs. Push and hold
alarm reset (5) and adjust up(4) and down (2) until correct level is measured.
6
Press and hold the fan(2) and week program (4) until both LED stops flashing
Keypad illustration:
1
2
3
4
5
