TEC22x4-3 L
ON
W
ORKS
® Networked Multi-Stage Economizer Thermostats Installation Instructions
9
Aux cont
Energizes peripheral devices
(lighting equipment, exhaust fans,
and economizers).
Default:
n.o.
(n.c.):
Contact open = Occupied; contact closed = Unoccupied
(n.o.):
Contact closed = Occupied; contact open = Unoccupied
The contact toggles with the internal Occupied/Unoccupied
schedule (or the NSB contact on one of the digital inputs, if used).
Provides the desired occupied
temperature either at the start of the
occupied schedule or after the
occupied schedule begins.
Note:
Progressive recovery is
disabled if either DI1 or DI2
is configured as remote NSB
Default:
off
(on):
Enabled (provides the desired occupied temperature at the
start of the occupied schedule)
(off):
Disabled (provides the desired occupied temperature after the
occupied schedule begins)
Chngstpt
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:
55.0°F/13.0°C
Range:
14.0°F/-10.0°C
to
70.0°F/21.0°C
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 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.
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
Table 2: Installer Configuration Menu (Part 4 of 5)
Parameter
Appearing
on Display
Description and Default
Selection Options
