Helios KWL 170 W, Installation And Operating Instructions Manual

Page: 52 / 100

Central ventilation unit – KWL 170 W/W ET
Installation and Operating Instructions
EN EN
19
4. Configure unit and click “Next”.
> The settings summary page will open up.
5. Check settings and adjust if necessary.
6. Click “Previous” to adjust the settings.
7. Click “Finish” to complete the initial commissioning.
6.3 Adjustment
ⓘ
The unit can only be adjusted following a successful initial commissioning. The adjustment is absolutely neces-
sary to ensure the optimal functionality of the unit.
6.3.1 Conditions for adjustment
• The installation of the ventilation system must be complete.
• Ventilation components such as the unit, distribution box and valves must be freely accessible.
• The unit must be electrically connected and operational (ensure clean filter in unit!).
• The ventilation valves must be fully open.
• The initial commissioning has been successful.
• All planned overflow openings (door gaps, ventilation grilles, or the like) between the rooms must be available and
clear.
• A flow rate calculation has been carried out for the individual operating points (total or per room). We recommend
calculation in accordance with DIN 1946-6.
6.3.2 Perform pressure measurement for adjusting the system
Necessary equipment:
• Pressure gauge
• Flow rate measuring device with measuring funnel and settling section
• KWL
®
unit characteristic curves for supply air and extract air (included in installation and operating instructions)
• Design calculation
In order to adjust the system, a pressure measurement must be performed to determine the system characteristic curve
and the corresponding operating points.
The flow rate depending on static pressure is specified in the unit characteristic curve.
Operating point : The operating point is the point where the unit characteristic curve intersects the system characteristic
curve.
Flow rate : The flow rate which is set in the unit can be read on the horizontal axis.
Fig. 27