Dry Bulb Settings; Reference Enthalpy Settings; Wiring Connections - Trane Precedent FIAECON002 Series Installation Instructions Manual

without movement, it can be assumed it is at the new
position.
3. Replace the filter access panel.
The damper will close when the blower circuit is 
de-energized.

Dry Bulb Settings

Standard economizer dry bulb changeover is field selectable
and has a range of 50-140ºF.
Table 1. Precedent economizer control options
Control Option
Comparative Enthalpy
Reference Enthalpy
Dry Bulb
Differential Dry Bulb

Wiring Connections

Refer to main unit schematic sheet 6 for electrical
connections to Fresh air module located in return section
control box, See Figure 9, p.
After installation is complete, the Symbio™ 700 UC
configuration will need to be updated to enable this
installed feature. Refer to ACC-APG002*-EN.
Figure 9. Fresh air options module location
Fresh air options
module access (B and C cabinet)
Fresh air options
module access (D cabinet)
ACC-SVN261A-EN
Enable Conditions
Outside Air Enthalpy < Return Air Enthalpy – Econ Enthalpy
Offset AND Outside Air Temperature < Economizer Drybulb
Setpoint – Econ DryBulb Offset
Outside Air Enthalpy < Reference Enthalpy Setpoint
– Econ Enthalpy Offset AND
Outside Air Temperature < Economizer Drybulb Setpoint
- Econ DryBulb Offset
OA Temp < [Economizer Outdoor Air Enable Setpoint BAS
- Economizer Dry Bulb Enable Offset]
OA Temp < RA Temp - Economizer Dry Bulb Enable Offset
- Economizer Dry Bulb Disable Return Air Offset
9.
Field Installed Assembly and Installation

Reference Enthalpy Settings

Economizer enthalpy changeover is field selectable and has a
range of 50-140°F. The default is 60°F. This selection can be
made using the Symbio™ service and installation mobile app
or Symbio™ 700 on-board UI.
Option Sensor Required
Outdoor Air Temperature Sensor
Outdoor Air Humidity Sensor
Return Air Temperature Sensor
Return Air Humidity Sensor
Outdoor Air Temperature Sensor
Outdoor Air Humidity Sensor
Outdoor Air Temperature Sensor
Outdoor Air Temperature Sensor
Return Air Temperature Sensor
9