TEC20x6(H)-4 and TEC20x6H-4+PIR Series Wireless Thermostat Controllers with Dehumidification
Capability, Fan Control, and Occupancy Sensing Capability
9
Light-Emitting Diodes (LEDs)
Three LEDs are included to indicate the fan status, call
for heat, or call for cooling:
•
The fan LED
is on when the fan is on.
•
The heat LED
is on when heating is on.
•
The cool LED
is on when cooling is on.
The Status LED, located beneath the cover, flashes at
5-second intervals to provide indication of the network
status of the thermostat controller. See Table 3.
Integrated PIR Sensor –
TEC20x6H-4+PIR Series Thermostat
Controllers
The integrated PIR sensor allows for automatic
switching between fully adjustable Occupied and
Stand-By temperature setpoints without user
interaction. This feature generates incremental energy
savings during scheduled occupied periods while the
space is unoccupied.
Backlit Liquid Crystal Display (LCD)
The thermostat controller includes a 2-line, 8-character
backlit display. Low-level backlighting is present during
normal operation, and it brightens when any user
interface key is pressed. The backlight returns to low
level when the thermostat controller is left unattended
for 45 seconds.
Status Display Menu
The Status Display Menu displays during normal
operation. This menu scrolls through several
parameters:
•
Room Temperature
•
Room Temperature and Humidity (TEC2036-4,
TEC2036H-4, TEC2036H-4+PIR, TEC2056-4,
TEC2056H-4, and TEC2056H-4+PIR models)
Note:
For models with dehumidification capability,
the default setting is no humidity reading on the
display (
%RH disp
parameter is set to
off
.) The
%RH disp
parameter must be set to
on
to display
the current humidity reading.
•
System Mode
•
Occupancy Status (Occupied/Unoccupied/
Override)
•
Applicable Alarms – The backlight lights up as an
alarm condition is displayed.
Note:
An option is available within the Installer
Configuration Menu to lock out the scrolling display and
show only the Room Temperature parameter.
Dehumidification Operation –
TEC2036(H)-4 and TEC2056(H)-4 Thermostat
Models
Upon detection of room humidity above the adjustable
humidity setpoint as sensed by the integral humidity
sensor, dehumidification activates.
Note:
Dehumidification operation functions only in the
Cooling mode; dehumidification operation does not
function in either the Off or the Heating mode.
Note:
A central network command can globally
lock out dehumidification operation to all thermostats.
If the room temperature resides in the deadband
between the Heating and Cooling setpoint:
•
the thermostat forces the fan to low speed
•
the chilled water valve opens to the specified
maximum value set by
CoolMax
•
the thermostat stages Heating to maintain the room
temperature at the Cooling setpoint, as sensed by
the thermostat
If the room temperature falls below the current Heating
setpoint, the thermostat disables dehumidification
operation.
Table 3:
Status LED
Flashes per
5-Second
Interval
Condition Indicated
1
Power On
2
Power On, Communicating
3
Power On, Communicating, Found
Wireless Network
4
Power On, Communicating, Found
Wireless Network, Communicating with
TEC20 Coordinator
