TEC2604-4 and TEC2604-4+PIR BACnet® MS/TP Networked Multi-Stage Economizer Thermostat
Controllers Installation Instructions
11
H stage
Reverts the operation of a two-stage
thermostat controller to a single-
stage thermostat controller when
the second heating stage is not
needed.
Default:
2.0
(1.0):
One Stage
(2.0):
Two Stages
C stage
Reverts the operation of a two-stage
thermostat controller to a
single-stage thermostat controller
when the second cooling stage is
not needed.
Default:
2.0
(1.0):
One Stage
(2.0):
Two Stages
H lock
Discontinues heating operation in
response to the outdoor air
temperature. Requires that an
outdoor air temperature sensor be
installed and connected.
Default:
120°F/49°C
Range:
-15°F/-26°C
to
120°F/49°C
adjustable in 5F°/5C°
increments
C lock
Discontinues cooling operation in
response to the outdoor air
temperature. Requires that an
outdoor air temperature sensor be
installed and connected.
Default:
-40°F/-40°C
Range:
-40°F/-40°C
to
95°F/35°C
adjustable in 5F°/5C° increments
Unocc TM
Sets the time delay between the
moment when the thermostat
controller toggles from the Occupied
mode to the Unoccupied mode after
the last motion is detected by the
occupancy sensor.
Default:
0.5 hours
Range:
0.5 hours
to
24.0 hours
adjustable in 0.5 hour increments
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).
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:
55.0°F/13.0°C
Range:
14.0°F/-10.0°C
to
70.0°F/21.0°C
Table 1: Installer Configuration Menu (Part 4 of 5)
Parameter
Appearing
on Display
Description and Default
Selection Options
