Configurable analog inputs (AIs)
The thermostat controller supports up to three
configurable AIs that can be used to add different
features to the system. The configuration menu can be
accessed through Setup > Input Setup. All three AIs can
be configured tosupport the following options:
• Relative Humidity—Sets up the AI to accept a 0 VDC-10
VDC input when connected to a humidity sensor.
• Remote Zone Temperature—Sets up the AI to accept
a resistive input when connected to one of the six
supported types of temperature sensors.
• Carbon Dioxide—Sets up the AI to accept a 0 VDC-10
VDC input when connected to a CO
2
sensor.
• Damper Feedback—Sets up the AI to accept a 0 VDC-10
VDC input when connected.
• Outdoor Air Temperature—Sets up the AI to accept
a resistive input when connected to one of the six
supported types of temperature sensors.
• Supply Air Temperature—Sets up the AI to accept
a resistive input when connected to one of the six
supported types of temperature sensors.
Configuring the AIs
1. Connect the required sensors to the analog inputs.
2. Press the Menu icon.
3. Press Setup.
4. Press Input Setup.
5. Press AI1 Input Selection and select the sensor
that is connected to RSEN. If the selected sensor
is a Remote Zone Temperature, Outdoor Air
Temperature, or Supply Air Temperature sensor,
the thermostat restarts.
6. Do one of the following after the restart based on
the type of sensor you are configuring:
- If the selected sensor is a temperature sensor,
do the following:
i. Press Menu > Setup > Input Setup
> AI1 Input Setup and select
the temperature sensor that is
connected to RSEN.
ii. Press Menu > Setup > Input
Setup > AI1 Offset and select the
temperature offset as needed for
thesensor connected to RSEN. The
options are -5°F to 5°F or -2.8°C to
2.8°C.
- If the selected sensor is a Relative Humidity,
Carbon Dioxide, or Damper feedback sensor,
the Input Setup is automatically set to 0
VDC-10 VDC. Press Menu > Setup > Input
Setup > AI1 Offset and select the offset
needed for the sensor connected to RSEN. The
options are -15% to 15% for Relative Humidity,
-200 ppm to 200 ppm for Carbon Dioxide, and
-15% to 15% for Damper Feedback.
7. Configure the analog inputs SAT and OAT by
following the same steps to set up AI2 Input
Selection, AI2 Input Setup, AI2 Offset, AI3 Input
Selection, AI3 Setup, and AI3 Offset.
8. Complete steps 1 to 7 to re-configure the
respective AI if you have to change the sensor
connected to any of the AIs. When the setup of AI1
Input Selection, AI2 Input Selection, and AI3 Input
Selection changes from resistive type (Remote
Zone Temperature, Outdoor Air Temperature, and
Supply Air Temperature) to 0 VDC-10 VDC type
(Relative Humidity, Carbon Dioxide, and Damper
Feedback) or the other way around, the thermostat
restarts.
Networked sensors
The TEC3000 supports sensor values supplied over a
network connection. For the TEC3000 to consider the
value as reliable, the value must be written to the NET-
Override network point at least every 15 minutes. Table
13 provides a list of point descriptions and the suggested
write interval ranges.
Table 13: Point descriptions and suggested write
interval ranges
Name Description Suggested write
interval range
NET-
OAT
Network Override Outdoor
Air Temperature
15 minutes at
maximum
NET-
OAH
Network Override Outdoor
Air Humidity
15 minutes at
maximum
NET-
SAT
Network Override Supply
Air Temperature
30 seconds to 2
minutes
NET-
ZNH
Network Override Zone
Humidity
5 minutes to
15 minutes at
maximum
NET-
ZNT
Network Override Zone
Temperature
15 seconds to 2
minutes
NET-
OCC
Network Override Zone
Occupancy
15 minutes at
maximum
Availability of AIs
For TEC3x3x-1x-xxxx models, RSEN, SAT, and OAT inputs
are available for connection.
Priority for configurable AIs
You cannot set any two AIs to the same function or
sensor type for any of the inputs. If two or more AIs are
configured as the same, the first configured input is used
and the others are ignored. For example, if RSEN, SAT, and
OAT are all configured as Relative Humidity, only RSEN is
used and SAT and OAT are ignored.
Priority for overall sensors data sources
The TEC3000 supports various sources of sensor data
for use in control or display, including internal sensors,
remote sensors that connect using an analog input, or
network commanded sensors. The TEC uses the highest
priority connected input, which consists of network
commands followed by remote sensors and then internal
sensors, for control and display. Not all sources are
available for all sensors.
TEC3000 Series Networked and Wireless Single- or Two-Stage Economizer Thermostat Controllers Installation Guide26
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