Dantherm HCV 300, Service Manual

Page: 23 / 44

23
093683
• Versio
n
1.4• 19.
04.20
17
Calibration
Introduction In order to obtain the correct ventilation comfort level, as well as not damaging the
house structure, it’s important to calibrate 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 for 4 hours, then the unit switch
to fan step 3.
Calibration tool The unit can be calibrated by means of the Dantherm PC 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
meter, Testo 510, which 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
calibration.
Calibration
using keypad on
front Follow these steps to calibrate the unit's fan speed.
Step Action
1 Press and hold (5 sec.) the fan button (2) and weekly program (4) until both
LED lights are flashing. The fan speed will now change to step 3.
The unit is now in
"installer mode"
2 Connect the differential pressure gauge to the valves directed to supply, as
shown on the label on the heat exchanger's cover panel (P1 -> P2)
3 Adjust the supply air to a suitable level in relation to the current
ventilation needs by pressing and holding down the bypass switch (1) and ad-
justing up (4) or down (2) until the correct level is measured. Note the values
on the label on the unit.
4 Uncap P1 and P2 and connect the differential pressure gauge to the valves
directed to extracted air (P3 -> P4)
5 Adjust the extracted air to a suitable level in relation to the current
ventilation needs. Press and hold the alarm reset (5) and adjust up (4) or down
(2) until the correct level is measured. Note the values on the label on the unit.
6 Press and hold down the switches for fan (2) and weekly program (4) until the
LED has stopped flashing. The unit is now calibrated.
Control panel illustration:
1 2
3 4
5