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7Biii. Outdoor Temperature Sensor (ODT) Connection
The FAVC uses an Outdoor Temperature (ODT) Sensor to monitor
ventilation temperatures passing into the ventilation duct from the
outside of the dwelling. The Outdoor Temperature Sensor terminal
block is in the OUTDOOR TEMPERATURE SENSOR CONNECTION
area of the FAVC as shown in Figure 1 and Figure 23. Terminals are
marked with an "S". The ODT sensor is supplied with the FAVC and
MUST BE INSTALLED for the FAVC to operate properly. The best loca-
tion to mount the ODT sensor is next to the fresh air damper on the
side wall of the duct. Location on duct should be between the fresh
air damper and the outside vent hood or between inline duct heater
FIGURE 23:
and outside vent hood in cold region applications (Refer to Figures
Outdoor Temperature
14, 15 and 16). Refer to Figure 20 with HRV/ERV equipment for
Sensor Connection
ODT sensor location. Drill a 1/4 inch diameter hole and insert the sensor
(Rotated 90°)
probe into the vent duct and seal with metal duct tape. The ODT sensor
is not polarized therefore, it does not matter which wire is connected to
either "S" terminals.
7Biv. Outdoor Temperature Sensor LED Status
The FAVC will provide status via a three color (Red, Green or
Blue) LED to indicate outside air temperature meets ventilation
requirements or if ventilation will be limited due to temperature or
humidity levels. Refer to FIGURE 24, Green indicates outside air
meets ventilation requirements without restrictions. Red indicates the
outside temperature is greater than or equal to 90°F, too hot for
FIGURE 24: Outdoor
ventilation and may be restricted to 25% or prohibited when outside
Temperature (ODT) LED
temperature reaches 100°F.
Blue indicates the outside air
temperature is less than 40°F, is too cold for ventilation and may
require heating to be active, restricted or prohibited. The LED may turn blue in color if the plenum low
temperature is reached. If the LED is off, this would indicate there is no power or there is a fault in the
sensor or sensor wire connection. The LED may be off for fi rst 15 seconds after power is applied to FAVC.
Page 25 of 36
P/N 780100700 07/18 Rev F
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