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RCS COMMUNICATING THERMOSTAT
Z-WAVE THERMOSTAT
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.
HVAC System Compatibility
- Works with all Standard Gas/Electric and Heat Pump HVAC systems including Multi-stage units.
- Central HVAC systems or separate heating/cooling systems with separate RH/RC transformers.
- Standard gas/electric HVAC Systems: Two stage heating/two stage cooling.
- Heat Pump HVAC Systems: Three stage heating/two stage cooling.
- Fan system: Selectable for standard or fan with heat for electric heat systems.
- Heat Pump Change Over valve (reversing valve): Selectable for change over with heat or cool operation (O or B output).
- Emergency Heat: In Heat pump mode, Emergency Heat mode is selectable from the wall display unit.

RCS TZ40 ZWave Thermostat Owner's Manual (.pdf)
Standard Thermostat Features:
- 128 x 64 Backlit Graphical Display
- 6 Buttons with On Screen Labels
- 4 LEDs with On Screen Labels
- Optional Remote Sensors
- Includes Zwave Adapter
Standard Thermostat Functions:
- Current Temperature Display
- Outside Temperature Display
- Setpoint Display and Control
- System Mode Display and Control
- Fan Mode Display and Control
- Time Display
- LED Displays
- 4 LEDS with Dynamic On Screen Labels
- Multi-Menu Screens
- Menu selection and scrolling
- Main Thermostat Screen
- Message Screen
- Schedule Setup
- Set Clock
- Sensor Calibration
- Thermostat Setup
- Thermostat Info
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