JOHNSON CONTROLS
14
FORM 145.05-SU2 (1207)
AIR SIDE ECONOMIZER
The feature allows the unit to use an air side economizer
instead of or in conjunction with the compressors to
maintain the conditioned space conditions.
Field Wiring
None required.
Programming
The following items must be programmed through the
“
Setpoints
” section of the User Interface:
•
“O/A Econ En”
– This parameter must be set to
ON. The default value is OFF.
•
“Econ-S/A Tmp En”
- This parameter must be set
to ON if you want the water side economizer to
be controlled by a supply air temperature. The
default value is OFF.
•
“Econ-R/A Tmp En”
- This parameter must be set
to ON if you want the water side economizer to
be controlled by a return air temperature. The
default value is OFF.
•
“O/A Damper Min”
– This parameter establishes
the minimum position of the air side economizer
damper. The parameter can be set between 0 and
100%. The default value is 15%.
