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Table 2: Installer Configuration Menu (Part 5 of 5)
Parameter
Description and Default
Appearing
on Display
C mech
Determines whether to allow
mechanical cooling (compressor
operation) if free cooling
(economizer operation) cannot
maintain the cooling setpoint.
Default: off
2
Establishes the mixed air
Mix stpt
temperature when operating in the
economizer mode.
Default: 55.0°F/13.0°C
MS temp
Displays the mixed air temperature.
Requires that an MS be installed
and connected.
Default: N/A
1.
When adjusting the numeric value, press the UP or DOWN arrow key to change the value by single increments; press and
hold the UP or DOWN arrow key to change the numeric value in increments of ten.
2.
When adjusting the temperature, press the UP or DOWN arrow key to change the value in 0.5F°/0.5C° increments; press
and hold the UP or DOWN arrow key to change the value in 5.0F°/5.0C° increments.
Operation
Programming/Operating the TEC2104-3
Thermostat
Once the thermostat is configured via the Installer
Configuration Menu, its operating parameters can be
programmed via the Main User Menu. Access this
menu by pressing the MENU key during normal
thermostat operation. The Main User Menu contains
the basic operating features of the thermostat.
The Main User Menu also uses Auto Help, which is
displayed automatically in the menu when there is a
pause in programming activity. To exit Auto Help,
continue with the programming selection. When the
thermostat is in the Main User Menu and is left
unattended for 45 seconds, the menu reverts to the
Status Display Menu.
Enabling Override Schedule
Note: Enabling Override Schedule only appears when
in the Unoccupied Mode.
The override schedule prompt only appears when the
thermostat is in the unoccupied state. This menu
selection gives the user the option of overriding the
unoccupied setpoints with the occupied setpoints for
the amount of time specified under the TOccTime
parameter. See the Configuring the TEC2104-3
Thermostat section.
12
TEC2104-3 N2 Networked Multi-Stage Economizer Thermostat Installation Instructions
Selection Options
(on): Typically applies when the Mixed air Sensor (MS) is installed
before the mechanical cooling refrigeration coils in the mixing
plenum. In this scenario, mechanical cooling is allowed when free
cooling cannot maintain the cooling setpoint.
(off): Typically applies when the remote MS is installed after the
mechanical cooling refrigeration coils. In this scenario, mechanical
cooling will never operate at the same time as free cooling.
Range: 50.0°F/10.0°C to 90.0°/32.0°C
The mixed air temperature can be used to help service and
troubleshoot the equipment and the economizer operation.
Note: If one of the digital inputs is configured to
operate as a remote override contact, this menu is
disabled.
To override the unoccupied state while in the Main
User Menu:
1. Press the NO key to all prompts until the Cancel
ovrd prompt appears. If the thermostat is in the
unoccupied state, this is the first prompt.
2. Press the YES key to enable the temporary
override. The thermostat returns to the Status
Display Menu.
When scrolling through the Status Display Menu,
Override now appears for the occupancy status
parameter.
Resuming the Programmed Schedule
This menu only appears when the thermostat is in the
unoccupied override mode.
To resume the schedule while in the Main User Menu:
1. Press the NO key to all prompts until the Cancel
ovrd Y/N prompt appears. If the thermostat is in the
unoccupied override state, this is the first prompt.
2. Press the YES key to resume the programmed
schedule.
The thermostat returns to the Status Display Menu.
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