Conditions For Adjustment; Perform Pressure Measurement For Adjusting The System - Helios KWL 340 D Manual

Installation and Operating Instructions
Characteristic curve KWL 220 D
Supply air
D p p
fa
f a
Pa PA
Characteristic curve KWL 340 D
Supply air
D p
p
fa
f a
Pa PA
Central ventilation unit – KWL 220/340 D

6.4.1 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.

6.4.2 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.
10 %
â â
20 %
ê ê
30 %
ô ô
40 %
û û
50 %
á á
60 %
é é
70 %
ó ó
80 %
ú ú
90 %
à à
100 %
è è
10 %
â â
20 %
ê ê
30 %
ô ô
40 %
û û
50 %
á á
60 %
é é
70 %
ó ó
80 %
ú ú
90 %
à à
100 %
è è
Fig. 34
Characteristic curve KWL 220 D
Extract air
p
D p
fa
f a
PA
Pa
V · m
3 /h
A m /h
3
Fig. 36
Characteristic curve KWL 340 D
Extract air
p
D p
fa
f a
PA
Pa
V · m
/h
3
A m /h
3
18
EN
Fig. 35
10 %
â â
20 %
ê ê
30 %
ô ô
40 %
û û
50 %
á á
60 %
é é
70 %
ó ó
80 %
ú ú
90 %
à à
100 %
è è
V · m
/h
3
A m /h
3
Fig. 37
10 %
â â
20 %
ê ê
30 %
ô ô
40 %
û û
50 %
á á
60 %
é é
70 %
ó ó
80 %
ú ú
90 %
à à
100 %
è è
V · m
/h
3
A m /h
3