DCN: 141-00940-02 7/14/03
2
DO NOT USE THIS PRODUCT FOR BUILDING FREEZE PROTECTION! YOU ARE ADVISED TO
INSTALL A MECHANICAL FREEZE PROTECTION DEVICE FOR THIS PURPOSE.
TXB16 Operation
The TXB16 thermostat provides the latest technology in a full-featured universal thermostat with X10
communications. The TXB16 has many new features including:
•
Separate Heating and Cooling Setpoints
•
Multistage HVAC Systems Support
•
Setup Mode from the Wall Display Unit
•
Automatic Remote Sensor Detection
•
Selectable X10 Decode Table
•
Bi-directional X10 Standard
•
Enhanced X10 Protocol
The TXB16 thermostat consists of two parts, a
TS16
Wall Display Unit (WDU)
and a
HVAC
Control Unit
.
The Wall Display Unit provides users functions like a traditional thermostat and connects to the Control Unit
by a 4 wire cable. The Control Unit connects at the HVAC system using the standard thermostat
connections and provides the thermostatic temperature control of the system. The Control Unit also has the
X10 Power Line Interface connection.
The TXB16 now maintains separate heating and cooling setpoints. The display shows the setpoint of the
current operating mode (in Auto mode, the system keeps track of the current operating mode of the last call,
either heating or cooling). New X10 bi-directional commands have been added for a heating setpoint and a
cooling setpoint. Note that the TXB16 maintains compatibility with single setpoint protocols by continuing to
support the current SP command for both inbound commands and status reports.
In addition to the universal Standard or Heat Pump systems support, the TXB16 supports multistage
heating/cooling system outputs. The control unit can support 2 stages of heating and cooling for Standard
systems, or 3 stages of heating and 2 stages of cooling for Heat Pump systems.
The TXB16 has a convenient setup mode from the Wall Display Unit. You can set the network address, F or
C mode and easily calibrate the internal and remote sensors.
The TXB16 has automatic detection and setup of remote temperature sensors. Remotes sensors have 3
address settings that, when detected by the TXB16, will be used for specific functions such as in lieu of the
internal sensor, averaging with other sensors or an outdoor sensor.
The default X10 unit code decode table, B or P can be set to allow compatibility with existing TX15/TX15B
thermostats and control software. Changes in decode table selection by using “All lights On” or “All Units
Off” commands or Preset Dim Commands are now stored in EE prom for permanent selection even with
power cycling.
For easy configuration as a replacement for older TX15 thermostats with the “B” decode table, dipswitch
SW1 position 4 can be set to ON to force “B” decode table use.
The Bi-directional protocol is now included as standard for the TXB16.
Remote control of the TXB16 via the X10 communications protocol allows for the thermostat’s temperature,
heating and cooling setpoints, operating mode and fan functions to be monitored or changed.
A robust X10 Bi-directional protocol allows full control of all the thermostat setup and operating parameters.
Many new commands have been added to support the TXB16’s new features. Refer to the X10 protocol
document, DCN 150-00200.