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TEC2103-2 Networked Multi-Stage Thermostat Installation Instructions
The Controller Point Type is the fixed-point definition inside the controller. The BAS Model Point type is the definition inside
the model file. Use an NCM CS object to retrieve the data.
The most recent N2 command received by any of the N2 Bus Objects listed in Table 1 controls the thermostat.
If an AD object is overridden by the Metasys system, all local changes attempted through the thermostat keypad for that AD
object are ignored until the override is released. For example, if the Metasys system sends a write command to turn System
Mode Off, then the occupant selects System Mode On at the TEC keypad, the TEC ends up with the System Mode On;
however, if the Metasys system sends an override command to turn System Mode Off, then the occupant selects System
Mode On at the TEC keypad, the TEC keeps the System Mode Off.
Once an override is released, the AD object may once again be changed through the thermostat keypad, but the thermostat
does not retain any data entered at the TEC keypad during the override.
Only one of the setpoints (Heating Setpoint or Cooling Setpoint) can be overridden at a time.
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The value for Heating SP (ADI-3) and Setback Heating SP (ADI-5) must stay within the limits established in the
controller by Minimum Heat SP (ADI-7 read-only) and Maximum Heat SP (ADI-8).
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The value for Cooling SP (ADI-4) and Setback Cooling SP (ADI-6) must stay within the limits established in the
controller by Minimum Cool SP (ADI-9) and Maximum Cool SP (ADI-10 read-only).
If a setpoint is overridden, the TEC, if necessary, adjusts the other setpoint to maintain the minimum 2 F° deadband
between the setpoints. The setpoints can be spread further apart but can never be adjusted closer than 2 F° apart.
Failure to stay within the limits for a command results in an N2 Negative Acknowledge (NAK) error from the TEC2103-2
thermostat.
Overrides take precedence over any local adjustment or command in the TEC2103-2.
You must not have a Relinquish Default for the setpoints if you want to change them from the thermostat display.
If there is a Relinquish Default for the setpoints, the Network Automation Engine (NAE) always has an Override for either an
Adjusted value or the Relinquish Default value. You should use Operator Override and Release Operator Override if you
want to command the setpoint and release it to local control.
Once all the NAE commands are released, the Override Status in the Hardware tab should be False. At that time, the user
should be able to change the setpoint from the local display.
All overrides are released automatically after 10 minutes of no communications (for example, network cable is removed
from the TEC causing loss of network communications).
