AFA4000/E VAV Airflow Controller / p.146
2. Select Valve and press Mute to continue. This bases the Econ output 1 on the damper
position so that the behaviour of both outputs is the same.
3. Select Done and press Mute.
4. Select Dual Output, followed by Bleed Damper. Press Mute.
5. Use the ↑ and ↓ arrows to select the Bleed Damper parameter and press Mute. A sub-menu
for the Bleed Damper settings will be displayed:
6. Select Man/Auto, then Manual and press Mute.
7. Use the ↑ and ↓ arrows to adjust the manual output so that the bleed or room air damper is
fully closed. Press Mute, select Done and press Mute again. This closes the secondary output
so that the Econ output can be set up and calibrated (section 7.1).
When the airflow sensor is calibrated and the Econ control set up and placed in Auto control,
calibrate the bleed damper output as follows:
1. Navigate to Main Menu > Set up Monitor > Configure.
Note: The Configure menu is password protected. The default password is 0 0 0 0.
2. Use the ↑ and ↓ arrows to select Bleed Damper and press Mute. The Bleed Damper sub-
menu displays.
3. Select Man/Auto, then Automatic and press Mute.
4. Follow the on-screen instructions to move the sash to the first position (normal working
height, approximately 500 mm).
5. Use the ↑ and ↓ arrows to adjust the output % shown on screen to drive Output 2 to the
required position, e.g. 0% fully closed. Press Mute.
6. Follow the on-screen instructions to move the sash to the second position (sash closed
position, approximately 100 mm).
7. Use the ↑ and ↓ arrows to adjust the output % shown on screen to drive Output 2 to the
required position, e.g. 100% fully open. Press Mute.
Select Done, followed by Run.
This sets the output so Econ Output 2 is 0% when the sash is at 500 mm and 100% when the
sash is closed.
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