Minimum Position Setting; Dry Bulb Settings; Reference Enthalpy Settings; Wiring Connections - Trane FIAECON003 Series Installation Instructions Manual

Installation

Minimum Position Setting

To adjust the minimum position setting and check out the
economizer, the power must be connected.
1. Close the unit disconnect and place the zone sensor fan
selector in the fan ON position and the heat/cool
selector in the OFF position. This will place the damper
in the minimum ventilation position.
2. To adjust the minimum position setting for the
required ventilation air, use the Symbio™ service and
installation mobile app or Symbio™ 700 on-board UI
to adjust the economizer minimum position setpoint
BAS in the fresh/return air settings menu. The damper
will open to this setting each time the blower circuit is
energized.
When adjusting minimum position, the damper may
move to the new setting in several small steps. Once
the damper has remained in position for 10 - 15
Table 1. Precedent economizer control options
Control Option
Outside Air Enthalpy < Return Air Enthalpy – Econ Enthalpy
Comparative Enthalpy Offset AND Outside Air Temperature < Economizer Drybulb
Setpoint – Econ DryBulb Offset
Outside Air Enthalpy < Reference Enthalpy Setpoint – Econ
Reference Enthalpy Enthalpy Offset AND Outside Air Temperature < Economizer
Drybulb Setpoint - Econ DryBulb Offset
OA Temp < [Economizer Outdoor Air Enable Setpoint BAS -
Dry Bulb
Economizer Dry Bulb Enable Offset]
OA Temp < RA Temp - Economizer Dry Bulb Enable Offset -
Differential Dry Bulb
Economizer Dry Bulb Disable Return Air Offset

Wiring Connections

Refer to main unit schematic sheet 6 for electrical
connections to Fresh air module located in return section
control box, See Figure 17, p.
Figure 17. Fresh air options module location
Fresh air options
module access (B and C cabinet)
10
Enable Conditions
10.
seconds 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.

Reference Enthalpy Settings

Economizer enthalpy changeover is field selectable and
has a range of 50-140ºF. The default is 60ºF. This selection
can be made using the Symbio service and installation
mobile app or Symbio™ 700 on-board UI.
Optional Sensors 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
After installation is complete, the Symbio™ 700 UC
configuration will need to be updated to enable this
installed feature. Refer to Symbio Applications Guide.
Fresh air options
module access (D cabinet)
ACC-SVN232A-EN