York Eco 2 Quick Start Up Manual page 35

•
The Unit Controller will then send a 10 DCV
analog signal to the Economizer Damper. This
will place the outdoor damper in the full open
position and place the return damper in the
full closed position. The Unit Controller will
also energize the binary output for the Exhaust
Fan and send a 10 DCV signal to the Exhaust
Damper if installed. This will result in the
Exhaust Fan operating at full speed and the
Exhaust Damper in the full open position.
•
After fi ve minutes the Economizer Damper will
close to its programmed minimum position, the
Exhaust Fan will turn off, the Exhaust Damper
will close and the unit will resume normal op-
eration.
•
During the Run Test the control will read all
installed sensors and verify their operation. If
an error is detected, the control will display the
appropriate error and log it to the software for
viewing.
JOHNSON CONTROLS
FORM 100.50-SU3 (1207)
35