Unit installation

DCN: 141-00885-16 1/26/06 TZ40 Thermostat Manual 2
TZ40 OPERATION
The TZ40 Thermostat provides typical thermostat functions as well as the capability to send and receive
information via ZWave communications. This communications capability allows the thermostat’s setpoint,
mode and fan operation to be changed or monitored remotely.
The thermostat consists of three parts, a Wall Display Unit (WDU), a HVAC Control Unit and the ZWB
ZWave Adapter. The Wall Display Unit looks like a traditional thermostat and is the wall mounted user
interface for the TZ40. It provides display, control pushbuttons, and the temperature sensor. The WDU
connects to the Control Unit by a 4 wire cable. The Control Unit connects to the HVAC system in place of
a standard thermostat and provides thermostatic control of the system. The ZWB ZWave
communications adapter connects to the control unit RS485 port and can be located in a convenient
location up to several hundred feet from the HVAC system.
The Model TZ40 can be used with up to 3 remote temperature sensors such as the RS15.
TZ40 Wall Display Unit
The TZ40 WDU is a Model TS40 and has a backlit LCD graphical display, control buttons, LEDs and a
digital temperature sensor. The WDU can display multiple screens. In the default thermostat screen, it
shows the current temperature, setpoint, mode and manual fan mode, time, outside temperature and
other information.
Any changes in temperature, or control button operations, are transmitted to the Control Unit. Updates
are received from the Control Unit and displayed by the WDU.
TS40 Wall Display Unit Display
The TS40 display is a graphical LCD display capable of both text and graphics. The WDU has multiple
display “screens”. The main screen is the thermostat screen shown above. This screen has a
“minimized” mode in which only the temperature is displayed. It reverts to this minimized mode after a
timeout delay period.
Other standard screens are selected by the Menu button and include: Messages, Schedules, User
Settings, and Thermostat Info. Others may be present and selectable from the menu button in special
versions of the WDU.
The TZ40’s LCD features a backlit display for low light and night visibility. It can be set to remain on
constant or to turn out after a 20-45 second delay.
Model TS40 Wall Display Unit
75
MODE FAN MENU
76 H
Econ
Sys Off
Run
No Msg
10:25
Outside 60
RUN
74 C
Indicator LEDs
Setpoint
Up/Down
Buttons
Function Control Buttons
Heat (H) and
Cool (C)
Setpoints
On-screen
dynamic labels