TEC2004-4 and TEC2004-4+PIR Multi-Stage Economizer Wireless Thermostat Controller
Installation Instructions
12
Aux cont
Energizes peripheral devices
(lighting equipment, exhaust fans,
and economizers).
Default:
n.o.
Note:
The contact toggles with the
internal Occupied/Unoccupied
schedule (or the NSB contact on
one of the digital inputs, if used).
(n.c.):
Contact open = Occupied; contact closed = Unoccupied
(n.o.):
Contact closed = Occupied; contact open = Unoccupied
Chngstpt
2
Sets the economizer changeover
strategy, based on the outdoor air
temperature. Requires that an
outdoor air temperature sensor be
installed and connected.
When the OA temperature is below
the changeover setpoint, free
cooling is used (economizer
operation). When the OA
temperature is above the setpoint,
mechanical cooling is used
(compressor operation).
Default:
13.0°C/55.0°F
Range:
-10.0°C/14.0°F
to
21.0°C/70.0°F
Min pos
Sets the minimum position for the
OA dampers on the economizer.
These dampers are energized to
minimum position when the fan
(Terminal G) is energized and the
thermostat controller is in the
Occupied mode. When the
schedule is in the Unoccupied
mode, the minimum position is 0%.
Default:
0.0%
Range:
0.0
to
100.0%
equals 0 to 10 VDC output range
% OA
Setting for 0 to 10 VDC
Actuator
Setting for 2 to 10 VDC
Actuator
(0.0%)
0%
0 to 20%
(5.0%)
5%
24%
(10.0%)
10%
28%
(15.0%)
15%
32%
(20.0%)
20%
36
%
(25.0%)
25%
40%
(30.0%)
30%
44%
C mech
Determines whether to allow
mechanical cooling (compressor
operation) if free cooling
(economizer operation) cannot
maintain the cooling setpoint.
Default:
off
(on):
Typically applies when the 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 Mixed air Sensor (MS) is
installed after the mechanical cooling refrigeration coils. In this
scenario, mechanical cooling will never operate at the same time as
free cooling.
Mix stpt
2
Establishes the mixed air
temperature when operating in the
economizer mode.
Default:
55.0°F/13.0°C
Range:
50.0°F/10.0°C
to
90.0°/32.0°C
MS temp
Displays the mixed air temperature.
Requires that an MS be installed
and connected.
Default:
N/A
The mixed air temperature can be used to help service and
troubleshoot the equipment and the economizer operation. The
mixed air temperature is only accessible via the Installer
Configuration Menu.
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.
Table 3: Installer Configuration Menu (Part 5 of 5)
Parameter
Appearing
on Display
Description and Default
Selection Options
