AFA4000/E
VAV Airflow Controller / p.98
7.
Calibration
7.1
AFA4000/E and AFA4000/E/AS Airflow Monitors
The airflow monitor must be calibrated when it is first installed, or when required during use.
When the unit is powered up, the AFA4000 either enters Run mode (if it has already been
calibrated), or it displays the message
Requires set up, press Mute to continue
. The
Set Up
menu
allows the unit to be calibrated or configured (password required).
To calibrate the monitor:
1.
From the
Run Screen
press and hold the
Mute
button for 5 seconds until the
Main Menu
is
displayed.
Note: When you go from the main menu to the run screen, a note briefly appears saying
‘calibration required’.
2.
Use the
↑
/
↓
buttons to select
Set Up Monitor
, then
Configure
.
3.
Enter the password (the factory default password is 0-0-0-0) and press
Mute
to continue.
4.
Use the
↑
/
↓
buttons to select
Econ Configure
, then
Manual/Auto
followed by
Mute
.
5.
Select
Manual
and press
Mute
to continue.
6.
Open the sash to the normal operating height and use a calibrated instrument to measure
the face velocity.
7.
Use the
↑
/
↓
buttons to adjust the manual output so the face velocity is equal to the design
velocity (e.g. 0.5 m/sec (100 fpm)). Press
Mute
.
8.
Select
Done
followed by
Mute
. This manually sets the output to a fixed value to allow the
airflow sensor calibration.
9.
Use the
↑
/
↓
buttons to select
Set Up Monitor
, then
Calibration
.
10.
Enter the password (the factory default password is 0-0-0-0) and press
Mute
to continue.
Note: The Monitor Set up Menu also includes Calibration and Password sub-menus which
are used by engineers to set up the system. If you enter any of the Monitor Set up
sub-menus by accident, press the
↑
and
↓
arrows together when the password is
requested to return to the Monitor Set up menu.
11.
With the sash open to the normal operating height measure the face velocity using a
calibrated anemometer. Use the
↑
/
↓
buttons to enter the measured face velocity then press
Mute
. The monitor samples the airflow for 5 seconds.
Summary of Contents for AFA4000/E
Page 1: ...AFA4000 E VAV Airflow Controller Installation and operating manual Issue 2...
Page 57: ...AFA4000 E VAV Airflow Controller p 57 Figure 22 AFA4000 E inverter control connections...
Page 58: ...AFA4000 E VAV Airflow Controller p 58 Figure 23 AFA4000 E damper control connections...
Page 59: ...AFA4000 E VAV Airflow Controller p 59 Figure 24 AFA4000 E typical connection diagram...
Page 60: ...AFA4000 E VAV Airflow Controller p 60 Figure 25 AFA4000 E AS typical connection diagram...
Page 62: ...AFA4000 E VAV Airflow Controller p 62 Figure 27 SM7 airflow sensor dimensions...
Page 96: ...AFA4000 E VAV Airflow Controller p 96 6 9 Auto Sash System Control Box general wiring diagram...
Page 158: ...AFA4000 E VAV Airflow Controller p 158...
Page 182: ...AFA4000 E VAV Airflow Controller p 182 Figure 79 Connection diagram with RS232 485 converter...
