AFA4000/E
VAV Airflow Controller / p.151
K factor
Constant for venturi device
00.00 to 100.00
F factor
Offset for fume cupboard leakage
100 to 200%
Air density
Air density constant
1.0 to 1.2 kg/m
3
5.
Select
Input Range
, then use the
↑
and
↓
arrows to adjust the value to match the settings on
the pressure cell PCB. Press
Mute
. (Default value: 0
–
50).
6.
Select
Output Range
, then use the
↑
and
↓
arrows to adjust the value to match the fume
cupboard volume range. Press
Mute
. (Default value: 0
–
1000). For example, changing to 500
l/sec gives 0
–
10V over 0
–
500 l/sec (10 V = 500 l/sec).
7.
Select
Input Filter
, then use the
↑
and
↓
arrows to adjust the value so that the volumetric
output is stable. Press
Mute
. (Default value: 1 second).
Note: The filter gives a rolling average over time to compensate for turbulent duct readings.
8.
Select
K Factor
, then use the
↑
and
↓
arrows to adjust the value so that the correct constant
correction value is displayed. (Default value: 45.80 for TEL device).
9.
Select
F Factor
, then use the
↑
and
↓
arrows to adjust the value so that the correct leakage
correction value is displayed. (Default value: 100%).
Note: The volume is measured in the duct and may not represent the face velocity
calculated volume due to leakage, using the F factor compensation the controller will
display relative fume cupboard volume, for example, set to 110% for 10% leakage.
10.
Select
Air Density
, then use the
↑
and
↓
arrows to adjust the value so that the correct value
is displayed. (Default value: 1.2 kg/m
3
). Select
Done
and
Run
. For example, change to 1.0
kg/m
3
if a 3
rd
party restrictor is used that doesn’t consider air density.
Содержание AFA4000/E
Страница 1: ...AFA4000 E VAV Airflow Controller Installation and operating manual Issue 2...
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Страница 58: ...AFA4000 E VAV Airflow Controller p 58 Figure 23 AFA4000 E damper control connections...
Страница 59: ...AFA4000 E VAV Airflow Controller p 59 Figure 24 AFA4000 E typical connection diagram...
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Страница 62: ...AFA4000 E VAV Airflow Controller p 62 Figure 27 SM7 airflow sensor dimensions...
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Страница 158: ...AFA4000 E VAV Airflow Controller p 158...
Страница 182: ...AFA4000 E VAV Airflow Controller p 182 Figure 79 Connection diagram with RS232 485 converter...
