Calibration Of Airflow - Dantherm HCV 300 Manual

INSTALLATION & SERVICE MANUAL FOR PROFESSIONALS
Installation: Calibration of airflow

Calibration of airflow

Introduction In order to achieve the correct comfort level, as well as to control humidity levels, it is import-
ant to adjust the amount of supply air entering the house, as well as the exhaust air from the
house.
This is done by adjusting the fan speed level in a nominal mode corresponding to level 3.
Calibration tools
Calibration of the airflow can be done in two ways:
1.
2.
In both procedures, the airflow must be calibrated by measuring ΔPa over the heat exchanger
using the pressure nozzles behind the front plate.
Dantherm recommends a handheld manometer, such as Testo 510 or similar.
!
Pour 0.5 L water into the water trap to prevent leakage from the drain prior to calibration.
NOTE
Use of graph
Follow these steps in preparation for calibrating the device.
Step Action
1
2
3
via the membrane keypad on the unit (see description below)
via PC Tool (follow the step-by-step description in PC Tool)
Use the desired airflow rate according to national regulations that corresponds to
the size and pressure drop of the house.
The supply airflow must under no circumstances be higher than the exhaust airflow,
Warning
as this can lead to humid air being pressed into the building structure with harmful,
negative effects on the building.
Note the desired values for supply and
Caution
exhaust airflow rates on the label located
on the cover of the heat exchanger.
(The values shown are examples for illus-
trative purposes only)
Locate the corresponding pressure drop
on the airflow graph on the heat ex-
changer and note the value as shown.
Air ow
80
70
60
Illustration
50
40
30
20
10
0
0 20 40 60 80 100 120 140 160 180 200 220 240
Einstellwerte / Calibration / Calibrazione
[Pa]
P1 P2
P3 P4 [Pa]
Air ow
80
70
60
50
40
Air ow
30
20
80
10
70
0
60
0 20
40 60 80 100 120 140 160 180 200 220 240
50
40
Einstellwerte / Calibration / Calibrazione
30
20
54
[Pa]
P1 P2
10
0
0 20
40 60 80 100 120 140 160 180 200 220 240
50
P3 P4 [Pa]
Einstellwerte / Calibration / Calibrazione
[Pa]
P1 P2
P3 P4 [Pa]
Air ow
80
70
60
50
40
P1-P2
P3-P4
171
[m³]
180
[m³]
P1-P2
P3-P4
P1-P2
P3-P4
171
[m³]
180
[m³]
[m³]
[m³]
37
P1-P2
P3-P4