RCS TZ43 Installation And Operation Manual

Model TZ43

Z-Wave Thermostat

INSTALLATION

AND

OPERATION MANUAL

DCN: 141-01652-07

4/30/09

RCS

DCN: 141-01652-07 4/30/09

2

Model: TZ43

Z-Wave Thermostat

This manual applies to the following product revisions or later revisions up to the next manual revision
release:

Product Part No: Firmware Revision
Z-Wave Thermostat 001-01652-01 1.00.3

Document Revision History

Revision Date Changes

01 7/30/08 Original release
02 8/22/08 Updated Zwave Install description
03 9/22/08 Updated Zwave command class information
04 10/6/08 Added Zwave Inclusion and Basic ON/OFF

information
05 3/8/09 Revised format. Stat picture
06 3/9/09 Information Update
07 4/30/09 Updated Z-Wave information

Product Specifications

Product Model: TZ43
Product: Thermostat for Heating and Cooling HVAC System control.

Z-Wave RF communications enabled

Thermostat
Size: 5.7” wide x 4.0” height x 1.2” depth
Display: Graphical LCD, 2.75” x 1.5”, 64x128 pixel
Backlight: Yes, Blue/white, Controllable, on, off, timeout
Contrast: Adjustable on screen
Buttons: 6
LEDs: 4 (3 green, 1 red)
Power: 24VAC from HVAC System
Temperature Sensing Range: -40F to +190F

HVAC System Type Compatible: Standard (gas/electric) or Heat Pump
Multistage System Compatible:

Standard HVAC Systems: 2 stage heating, 2 stage cooling

Heat Pump Systems: 3 stage heating (2 compressor, 1 aux heat), 2 stage cooling

Heat Pump change over valve: Selectable change over with cool or with heat
Remote Sensors: 2, two wire, remote primary, averaging
Communications: Z-Wave RF

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Table of Contents

Overview ......................................................................................................................................................4

Z-Wave® Installation...................................................................................................................................5

Setback Mode Operation...........................................................................................................................5

Inclusion and Exclusion.............................................................................................................................5

Thermostat Control Screen........................................................................................................................6

Temperature Display .................................................................................................................................6

Setpoint Display.........................................................................................................................................6

Thermostat Operation Buttons ..................................................................................................................7

Setpoint Up/Down Buttons.........................................................................................................................7

Clock Display.............................................................................................................................................7

LED Displays.............................................................................................................................................7

Setting Heating or Cooling Setpoints.........................................................................................................8

Schedules Screen....................................................................................................................................13

User Settings Screen...............................................................................................................................16

Thermostat Info Screen...........................................................................................................................22

Main Menu > Installer Settings (Hidden Screen).................................................................................23

Installer Settings Summary......................................................................................................................26

HVAC System Connection........................................................................................................................28

HVAC System Compatibility....................................................................................................................28

Remote Communications ........................................................................................................................28

HVAC System Operation and Setup........................................................................................................29

Standard HVAC System Types ...............................................................................................................29

Heat Pump HVAC System Types............................................................................................................29

Power.......................................................................................................................................................31

Standard Gas/Electric HVAC System Wiring ..........................................................................................32

Heat Pump HVAC System Wiring ...........................................................................................................33

FCC.............................................................................................................................................................34

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Overview

Z-Wave Thermostat

The Z-Wave thermostat provides for typical thermostat control of a central heating and cooling HVAC
system plus has the added feature of Z-Wave communications for remote control.

The thermostat has a large, backlit graphical display, control buttons, status LEDs and a temperature
sensor. The thermostat can display multiple screens for different functions of the thermostat. The default
thermostat control screen shown below, will display the current room temperature, heating and cooling
setpoints, system mode, manual-fan mode, time, and status information.

Display operation

Thermostat control screen

Normally the thermostat displays the thermostat control screen as shown above. Using the “Menu”
button, you can access other screens and functions of the thermostat.

Minimized Display Mode

Optionally, you can set the thermostat to show only the temperature in a “minimized” display mode.
This mode can be set on or off in the thermostat “Users Settings” menu.

Backlight

The thermostat has a backlit display for low light and night visibility. It can be set to remain on constantly,
or to turn off after a 20-120 second delay. These are selectable in the User Settings menu.

Status LEDs

The thermostat has four LED’s that displays status information. The LEDs have dynamic “on-screen”
labels that change with the screen being displayed.

Function Control Buttons

The thermostats buttons are “Soft Keys” meaning that they change functions when you change screens.
The function of the button is defined by “on-screen labels” that are dynamic and change when you change
screens

Status

Indicator

LEDs

Setpoint

Up/Down

Buttons

Function Control Buttons

Heating (H)

And

Cooling (C)

Setpoints

On-screen

dynamic

button labels

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Z-Wave® Installation

Z-Wave controllers from various manufacturers may support the Z-Wave Thermostat General V2 Device
class used by the RCS Z-WAVE Thermostat. The following procedure will allow the thermostat to be
added to a Z-Wave network.

General Programming Procedure

(for controllers supporting the thermostat device class):

1. Set your primary controller to Include mode, to add the thermostat as a node on your network
(see your controller’s user manual for detailed instructions).

2. In the Thermostat’s Main Menu, scroll down to the ZWave Install item. Select the item.

3. Press the YES button in the ZWave Install screen.

Your controller will indicate the thermostat was successfully added to its network (see your controller’s
user manual for details). Also you can check if the thermostat was successfully added to the network
by checking the ZHID (Home ID) and ZNID (Node ID) located in the Thermostat Info screen.

For other specific tasks such as adding the thermostat to Scenes or Groups, or deleting the
thermostat from an existing network, use the Z-Wave Install procedure.

Note: Before adding the thermostat to a Z-Wave Network, check that it does not already belong to
one by viewing the Home and Zone ID’s located in the Thermostat Info screen. An un-configured
thermostat should show zeros for both the Home and Zone IDs. Consult your controller’s user manual
for details on removing a device from a Z-Wave network.

Setback Mode Operation

If your controller does not support full thermostat device class functions, it may still be able to control the
energy saving AWAY mode of the thermostat through BASIC_SET commands.

Sending the BASIC_SET (Value = 0x00), the thermostat will go into the AWAY mode and use the
predefined AWAY setback setpoints. These setpoints are set in the Main Menu Away Setpoints item.

Sending the BASIC_SET (Value = 0xFF), the thermostat will revert back to the mode it was in (Hold or
Run) before the BASIC_SET (Value = 0x00) command was sent.

Note that when the BASIC_SET commands are sent, the TZ43 will momentarily display the new mode on
the Schedule Mode screen.

Inclusion and Exclusion

Inclusion or exclusion is started by putting the controller into add node or remove node state and
performing the General Programming Procedure outlined above. As part of the process, the thermostat
sends a node information frame at normal power.

Low power inclusion or low power exclusion is not possible.

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Thermostat Control Screen

Minimized Screen

Main Thermostat Control Screen

The main Thermostat Control Screen is the screen that is normally displayed on the thermostat.

Temperature Display

The thermostat will normally display the current room temperature from the internal temperature sensor
(or a remote sensor, if installed).

Setpoint Display

The current heating and cooling setpoints are displayed next to the Setpoint Up/Down buttons.

74

Press any button to return to
the thermostat control screen

The Minimized Screen
shows only the room
temperature.

It is displayed if you set the
“Screen Timeout” in the
User Settings Menu to a
time greater than 0.

If set to 0, the minimized
screen is disabled, and the
main thermostat screen is
normally displayed

MENU

COOL
MODE

72 H

AUTO

FAN

HOLD

74

75 C

4:30 PM

SYS OFF
ECON
HOLD
NO MSG

Status

Indicator

LEDs

On-screen

dynamic

button labels

Setpoint

Up/Down

Buttons

Heating (H)

And

Cooling (C)

Setpoints

Thermostat Operation Buttons

L1
L2
L3
L4

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Thermostat Operation Buttons

Menu – go to the Main Menu Screen to select other thermostat settings screens
System Mode – go to the System Mode screen to set thermostat operating mode
Fan Mode – go to the Fan mode screen to set the fan mode
Schedule Mode – go to the Schedule mode screen to set schedule mode or setback

Setpoint Up/Down Buttons

Press either the Up or Down buttons to go to the Heating or Cooling Setpoint screen.

Clock Display

The current time is displayed in the upper left corner of the main screen. Set the clock from the User
Settings Menu. The time will blink when the clock has not been set.

LED Displays

The Thermostat Control Screen has the following LEDs and on-screen labels.
LED L1 Green: System Operation mode.

o “SYS OFF” displayed > HVAC system is OFF. LED Off.
o “SYS MOT” displayed > Minimum Off Time (MOT) delay On is active. LED Off.
o “HEAT ON” displayed > HVAC system is heating. LED On.
o “COOL ON” displayed > HVAC system is cooling. LED On.
o “HEAT MRT” displayed > HVAC system is Heating and Minimum Run Time (MRT) delay off is

active. LED On.

o “COOL MRT” displayed > HVAC system is Cooling and Minimum Run Time (MRT) delay off is

active. LED On.

LED L2 Green: System Stage mode

o no display > 1st stage heating or cooling. LED OFF.
o “2nd Stg” displayed > Stage 2 heating or cooling is active. LED On.
o “Aux Heat” displayed > Stage 3 heating is active. LED On.

LED L3 Green: Schedule mode. Shows state of Schedule Run/Hold Mode.

o “Run” displayed > Setback schedule is running. LED Off.
o “Hold” displayed > Schedule is off, temperature setpoint hold in effect. LED On.
o “Away” displayed > Away setback mode is active. LED On.

LED L4 RED: Alert LED. Used for system alerts

o No display > No alerts. LED Off.
o Alert Text displayed > Specific alert text (Filter, Maint). LED On.

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Heating/Cooling Setpoint Setting

Setting Heating or Cooling Setpoints

Setpoint Up and Down Buttons

Press either the Up or Down button in the main Thermostat Control Screen to go to the current system
operating mode (Heating or Cooling) Setpoint screen. as shown below.

Heating /Cooling Setpoint Adjustment Screen

The UP and DOWN buttons adjust the setpoint temperature. Pressing the UP button will increment the
setpoint value by one degree and conversely, pressing the Down button will decrement the setpoint one
degree. Pressing and holding a button will cause the setpoint to continuously change until the button is
released.

Setpoint Range: The setpoints can be set from 50°F to 90°F (4°C to 32°C) for heating or 55°F to 99°F
(10°C to 37°C) for cooling.

Setpoint Push: Note that you cannot lower the cooling setpoint below the heating setpoint. The
thermostat will “push” the heating setpoint lower if you try to lower the cooling setpoint below the heating
setpoint. It maintains a 3 degree separation between the heating and cooling setpoint. The same is true
for raising the heating setpoint above the cooling setpoint. Again the thermostat will “push” the cooling
setpoint up to maintain the 3 degree separation.

NOTE: If the system mode is OFF, pressing either the Up or Down buttons will take you to the
System Mode screen. You must first set an operating mode before you can change the setpoints.

To change the Heat Setpoint you must be in Heating mode, to change the Cool Setpoint you must
be in the Cooling mode. If you are in Auto mode, the mode of the last system call will be the
setpoint screen displayed.

Heating and Cooling

setpoint setting buttons.

Adjust setpoint to

desired temperature.

HEATING SETPOINT

72

DONE

Down

Up

Press Done button to select new setpoint
and exit back to main thermostat screen.

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System Mode

Press the System Mode button to display the System Mode selection screen.

System Mode Screen

Mode Operation
OFF Mode: System is off. No heating or cooling will come on. If system was on, it will turn off.
HEATING Mode: Only heating will occur.
COOLING Mode: Only cooling will occur.
AUTO Mode: Heating or cooling will come on according to the heating and cooling setpoints. The

system will automatically switch between heating and cooling modes as needed to maintain the
setpoints.

Special Heat Pump Mode

EHEAT Mode: An additional system mode, “EHEAT” for Emergency Heat will be displayed if the

HVAC system type is set to Heat Pump. If there is a compressor failure with the Heat Pump system,
setting the mode to EHEAT will allow the supplemental Aux heat to come on first whenever there is a
call for heating. It also disables the compressor output to prevent further damage to the HVAC
system.

Select system mode

with Up or Down

buttons.

SYSTEM MODE

OFF
HEATING
COOLING

AUTO

DONE

Down

Up

Press DONE button to select mode and
exit back to main thermostat screen.

MODE

Press MODE button to go to the System Mode screen

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Fan Mode

FAN Button

The FAN button controls the HVAC system’s MANUAL fan mode. The current manual fan mode is
displayed above the button. Press the FAN button to go to the FAN MODE selection screen shown below.

Fan Mode Screen

Normally the FAN mode is in the Auto mode (the system fan is automatically controlled by HVAC system).
If you want the FAN on manually, select the ON mode. The fan will run continuously until it is turned off by
selecting AUTO mode.

Optional Fan Mode

Fan Cycler. If the Fan Cycler feature is enabled in the Installer Setup, the additional fan mode “Cycle”

will be shown in the Fan Mode menu. This mode cycles the fan on and off continuously for fresh air
ventilation according to the settings in the Installer Setup.

Select Fan mode with

Up or Down buttons.

FAN MODE

AUTO

ON

DONE

Down

Up

Press DONE button to select mode and exit
back to main Thermostat Control Screen.

FAN

Press FAN button to go to the FAN Mode screen.

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Schedule Operation

Schedule Mode

The Schedule button sets the schedule operation to RUN or HOLD mode. It also allows you to select an
AWAY setback mode. Pressing the Schedule button will take you to the SCHEDULE MODE menu screen
as shown below.

Schedule Mode Screen

Schedule Modes:
RUN Mode. In the run mode, the thermostat schedule is running and setpoints will change according the

times and temperatures in the internal schedule.

HOLD Mode. This holds the current temperature setpoint settings. The schedule operation is disabled.
AWAY Mode. This is an energy saving setback mode. When selected, the AWAY mode setback

temperature setpoint settings are used. It also inhibits schedule operation. AWAY mode setpoints are set
in the Main Menu “Away Setpoints” item.

Select Schedule mode

with Up or Down

buttons.

SCHEDULE MODE

HOLD

RUN

AWAY

DONE

Down

Up

Press DONE button to select mode and
exit back to main thermostat screen.

HOLD

Press the Schedule button to go to the
Schedule Mode screen.

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Main Menu

The Menu button on the main Thermostat Control Screen selects the MAIN MENU screen. The Main
Menu is a list of the primary thermostat setting screens. Selecting these items will take you to additional
submenu screens for specific settings.

Main Menu Selections

Note. Some menu items are optional. They must be enabled in the Installer Settings menu during
the system setup to show up in the Main Menu list.

Schedules. (Optional). This screen is used to view and set the programmable setback schedules of the

thermostat.
User Settings. This screen is used to set the Clock, Filter Service, Maintenance Service, Screen

Timeout, F/C mode, Sensor Calibration and Backlite/Display settings.

Usage Graph. Shows daily heating and cooling run time hours for a week.
Away Setpoints. Sets the energy savings Away setback heating and cooling setpoints.
ZWave Install. Used to install the thermostat into a ZWave network.
Thermostat Info Screen: This screen shows the firmware versions of the Thermostat and the Zwave

interface, ZWave network IDs, and the HVAC system type setup.

Select menu item with

Up or Down buttons.

.

Menu Selection

Schedules
User Settings
Usage Graphs
Away Setpoints

DONE

Down

Up

Press DONE button to exit back to main
thermostat screen.

SELECT

Press SELECT button to go to the submenu screen.

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Main menu - Schedules

Schedules is an optional menu item. It will only show up in the menu list if “Schedules” is enabled in the

Installer settings for the thermostat. Provides for local schedule control. The Schedules Screen allows
you to review and set the setback schedule for the thermostat. The thermostat has a 4 x 7 schedule.
Four times a day can be selected for changes to the heating and cooling setpoints. Each day of the week
can have a different schedule. Groups of days can be copied with the same schedule. When the
thermostat is set to “Run” mode, the schedule will be executed daily, with the setpoints being changed as
per that days schedule stored in the thermostat. “Hold” mode stops schedule operation and holds the
current setpoints until changed manually or by network commands.

The Schedules Screen gives you the option of setting a custom setback schedule or to load one of two
preset schedules.

Menu Options

• Heat and Cool: You can change the individual day/hour and setpoints for the Heating and
Cooling schedule by selecting this menu item.

• Preset: Comfort: This is a preset schedule with mild setbacks. Select this menu item to load
the Comfort schedule into the thermostat. Confirmation screen will be displayed for Yes/No entry.

• Preset: EnergyMiser: This is a preset schedule with deeper setbacks. Select this menu item to
load the EnergyMiser schedule into the thermostat. Confirmation screen will be displayed for
Yes/No entry.

Schedules Screen

Select menu item with

Up or Down buttons.

Select Schedule

Heat and Cool
Preset: Comfort
Preset: EnergyMiser

DONE

Down

Up

Press DONE button to exit back to main
thermostat screen.

SELECT

Press SELECT button to go to the submenu screen.

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Main Menu - Schedules - Heat and Cool Schedule Screen

When you select the Heat and Cool Schedule menu item, the “day” schedule programming screen opens
and the schedule for current day will be displayed. Use the scroll buttons to highlight the data to be
modified. Once the data has been highlighted, use the +/- buttons to change the value of the data.

To copy a days schedule to another day or group of days, move the cursor to “C” on the bottom right of
the schedule screen. When you highlight the “c”, the button below will become “Copy”. Press this button
to change to the Copy Schedule Screen.

Schedule Screen

Increase or decrease

the time or temperature

setting with the

Up/Down buttons.

Saturday Schedule

Time Heat Cool
Morn 06:00 A 70 78
Day 08:00 A 62 85
Even 04:00 P 70 78
Night 10:00 P 62 82 C

DONE

Press DONE button to exit back to Main
Menu screen.

NEXT

Press NEXT button to go to the next day (or if Copy
is selected, go to Copy Schedule screen).

+

Use the scroll buttons to navigate
forwards or backwards through the
time and temperature settings.

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Main Menu - Schedules - Heat and Cool - Copy Schedule

The Copy Schedule screen is a sub screen of the Schedule screen. The Copy Schedule screen allows
you to copy a day’s schedule to another day or group of days.

First select the day to be copied in the Schedule screen. Scroll to the “c” at the bottom of the Schedule
screen to highlight it. The “Next” button will change to the “Copy” button. Press the “Copy” button to open
the Copy Schedule screen.

Scroll through the days and select the days you want to copy the schedule to by setting the “N” under each
day to “Y” by using the Yes/No buttons.

After selecting all the days desired, press the “COPY” button.
Exit the Copy Schedule screen with the “DONE” button.

Copy Schedule Screen

Select Yes or No to

days to copy schedule

to using Up/Down

buttons.

Copy Saturday Schedule

Sun Mon Tue Wed Thu Fri
N N N N N N

DONE

Press DONE button to exit back to day
schedule screen.

COPY

Press COPY button to copy the schedule to the
days with Y selected.

Yes

No

Use the scroll buttons to navigate
forwards or backwards through the
days of the week.

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Main Menu - User Settings

The User Settings screen allows you to set or change various user options of the thermostat such as the
Clock, Filter and Maintenance service timers, Minimized Screen timeout, Fahrenheit/Celsius mode,
Sensor Calibrations, and Display settings.

User Settings Screen

Menu items:

Set Clock: Go to the Clock setting screen.
Filter Service: Go to the Filter Service Screen. Sets/resets the filter timer/alert.
Maint Service: Go to the Maintenance Service Screen. Sets/resets the maintenance timer/alert.
Screen Timeout: Set the display timeout time in seconds. Options are 0 or 15 to 120 (default set to 0

seconds). This is the time before the main thermostat screen reverts to the Minimized Screen
(temperature display only), after the last button press. Minimized Screen feature is disabled by setting this
time to “0”.

F/C Settings: Go to the F/C Settings Screen. Select which temperature display mode you desire,
Fahrenheit (F) or Celsius (C).

Sensor Calibration: Go to the Sensor Calibration Screen. This screen allows you to set the calibration of
the internal and remote temp sensors.

Backlite/Display: Go to the Backlite/Display settings screen. This menu allows you to set the backlight
timeout period and adjust the display contrast.

Select menu item with

Up or Down buttons.

User Settings

Set Clock
Filter Service
Maint Service
Screen Timeout 0

DONE

Down

Up

Press DONE button to exit back to Main
Menu screen.

SELECT

Press SELECT button to go to the submenu screen.

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Main Menu - User Settings - Set Clock

The Set Clock screen allows you to set the Thermostat’s internal clock.
To set the Time and Date, move the cursor with the navigation arrows until the data you want to change is

highlighted.
Using the + and – buttons to increment or decrement the data to the desired setting.
When finished, press the SET button to return to the Main Menu screen or wait for screen to timeout.

NOTE: If the clock has been reset by an extended power outage, the Clock display on the
thermostat screen will be blinking. Pressing the MENU button will take you directly to this screen
to set the clock.

Set Clock Screen

Increase or decrease

the time or date setting

with the Up/Down

buttons.

Set Clock

Time: 07:09 PM
Date: 03/07/09
Day: Sat

BACK

Press BACK button to exit back to User
Settings screen without setting the time.

SET

Press SET button to set the time and Exit.

+

Use the scroll buttons to navigate
forwards or backwards through the
time and date settings.

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Main Menu - User Settings - Filter Service

The Filter Service screen will show the accumulated Filter Runtime hours as well as the Service Interval
that will be used to trigger a Filter Message. Any type of HVAC operation that causes the HVAC system
fan to run will cause the Filter Runtime value to increase.

When the Runtime hours equals the Service Interval hours, the Red LED will flash along with a “Filter”
message to remind you to replace the filter. Pressing the Menu button will take you to the Filter Service
screen. Once the filter has been replaced, press the Reset button to reset the Filter Runtime value to
zero.

The Service Interval period can be changed using the +/- buttons.

Filter Service Screen

Filter Service

Filter Runtime 120 HRS

Service Interval 300 HRS

DONE

Press DONE button to exit back to User
Settings screen.

RESET

Press RESET to reset the runtime counter and exit.

Use +/- buttons to increase or
decrease the service interval hours.

+

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Main Menu - User Settings - Maint Service

The Maintenance Service screen will show the accumulated Heat and Cool Runtime hours as well as the
Service Interval that will be used to trigger a Maintenance Message. Any HEAT or COOL type of HVAC
operation will cause the respective Runtime values to increase.

When the combined HEAT and COOL Runtime hours equals the Service Interval hours, the Red LED will
flash along with a “Maint” message to remind you your HVAC system may require periodic maintenance.
Pressing the Menu button will take you to the Filter Service screen. The Reset button can be pressed and
the HEAT and COOL Runtime values will be reset to zero.

The Service Interval period can be changed using the +/- buttons.

Maintenance Service Screen

Maintenance Service

Heat Runtime 120 HRS
Cool Runtime 20 HRs
Service Interval 3000

HRS

DONE

Press DONE button to exit back to User
Settings screen.

RESET

Press RESET to reset the runtime counters.

Use +/- buttons to increase or
decrease the service interval hours.

+

-

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Main Menu - User Settings - Sensor Calibration

The Sensor Calibration screen allows you to change the temperature calibration of the internal
temperature sensor. You can change the temperature calibration by +/- 7 degrees.

When the Sensor Calibration screen is selected it will show the current temperature calibration (The (75)
in the example screen below) and the current number of degrees of offset being applied (1 deg in the
example). If the sensor’s actual temp is (74) with 0 degrees of offset and you want it to be 75, then press
“+” to add 1 deg and it will show (75).

To change the temperature calibration, use the scroll buttons to select the internal or a remote sensor.
Once selected, use the + and – buttons to change the temperature calibration to the desired setting.

The value shown in the (xx) is the calibrated or offset temperature that you want the sensor to show.
You can refresh the info on this screen by pressing the right hand (blank) button.
When you close this screen, it may take a few seconds for the temperature displayed on the main

thermostat screen to update to the new temperature.

Sensor Calibration Screen

Select menu item with

Up or Down buttons.

Menu Selection

Internal (75) 0
Remote 1 n/a 0
Remote 2 n/a 0

DONE

Down

Up

Press DONE button to exit back to main
thermostat screen.

Press +/- buttons to increase/decrease the
calibration offset.

+ -

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Main Menu - User Settings - Backlite/Display

The Backlite/Display screen allows you to set the Backlite timeout and contrast.
Backlite Timeout: Sets the time from last button press that the backlite will timeout and turn off. The

timeout value is adjustable from 0 or 20 to 120 seconds. If set to “0”, the Backlite will always be ON. If set
in the range of 20 to 120 seconds, the Backlite will turn OFF after the selected time expires.

Contrast: Sets the contrast level of the LCD display, adjustable from 0 to 20. Use this control to adjust
the darkness of the display. To light and the display looks faded, too dark and dark lines will appear in the
display. Typically 10 is the correct setting. Adjust as needed.

Backlite Settings Screen

Select menu item with

Up or Down buttons.

Backlite/Display

Backlite Timeout 0
Contrast 10

DONE

Down

Up

Press DONE button to exit back to User
Settings screen.

Press +/- buttons to increase/decrease the setting.

+ -

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Main Menu - Thermostat Info

The Thermostat Info screen displays the current configuration of the Z-WAVE Thermostat. This
information is useful for quick check of firmware versions and HVAC system setup. It also shows the
Zwave network setting.

Thermostat information displayed is:

• Thermostat - Model and firmware version number.

• Z-Wave Settings - ZWave Firmware version, ZWave Node ID, ZWave Home ID

• System Type - Standard or Heat Pump HVAC system

• Fan Type – if HVAC type = Standard: Gas or Elect

OR

• Changeover – if HVAC type = Heat Pump: Changeover with cool or changeover with heat.

When finished viewing this screen press the Done button to return to the main Menu screen or wait for
screen to timeout.

Thermostat Info Screen

Thermostat Info

TZ43 Ver 01.00.01
ZVER: 01.02.5 ZNID: 003
ZHID: 00.00.07.76
System Type: Standard
Fan Type: Gas

DONE

Press DONE button to exit back to Main
Menu screen.

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Main Menu > Installer Settings (Hidden Screen)

The Installer Settings screen is a hidden screen designed for installer use only. Do not change any
settings in this screen unless you are a qualified service technician. Changing these settings will affect the
operation of the heating/cooling system.

To enter this screen, go to the main menu selection screen and press and hold the two inner
buttons for 3 seconds until the Installer Settings screen appears.

The Installer Settings screen displays the current internal settings of the thermostat. You can view and
change the settings from this screen. Scroll to the desired function and use the +/- buttons to change.

Installer Settings Screen

Installer Settings Menu items
Display Lock: Range: Y or N Default: N

Y = Display LOCKED
N = Display unlocked
Allows you to lock or unlock the thermostat buttons. When the buttons are locked, you can still access the
main menu, but you will not be allowed to select any menu options. The Installer Settings hidden button
operation is always operational, allowing you to return to this screen and turn Display Lock off.

Service Mode Submenu
Test Mode Range: Y or N Default: N

Y= Test mode on. Reduces all delays to 10 sec for quicker system testing
N= Test mode off. Normal system delays.

CAUTION: in test mode all system safety delays are shorten. Do not operate the system
compressor in test mode. Disconnect Y1 or Y2 outputs if test mode on a live system.

Select menu item with

Up or Down buttons.

Installer Settings

Display Lock N
Service Mode
System Settings
Max Heat SP 90

DONE

Down

Up

Press DONE button to exit back to Main
Menu screen.

Press +/- buttons to increase/decrease the setting.

+

-

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System Settings Submenu

Mechanical Settings Submenu

Type Range: Gas/Elec or Heatpump Default: Gas/Elec
Selects HVAC type, Gas/Electric or Heatpump

Fan Type Range: Gas or Elec Default: Gas
Selects the Fan type if system is Gas or Electric

C/O Type Range: w/Cool or w/Heat Default: w/Cool
Set the Heatpump Changeover type

2nd Stage Heat Range: Y or N Default: N
Enables the 2nd Stage Heat operation

Aux Heat (HP) Range: Y or N Default: Y
Enables the Auxiliary Heat operation. Typically the Aux Heat will be heat-strips in a

Heatpump system

2nd Stage Cool Range: Y or N Default: N
Enables the 2nd Stage Cool operation

Schedule Enable Range: Y or N Default: N

When enabled, the local thermostats scheduler function is enabled.

Recovery enable Range: Y or N Default: N
For Heat Pump Systems. Intelligent setback recovery is an automatic advance start of heating to
allow the system to be at setpoint by the schedule time, without the use of Aux heating.

Note on Delta Settings : The Delta T Setting is the delta, or difference between, the setpoint and
current temp for determining when a heat or cool call comes on. The “delta” is the number of
degrees away from setpoint.

H/C Delta Range: 3 - 15 degrees. Default: 3.
Sets the minimum separation between heating and cooling setpoints. Attempts to lower the
cooling below the heating setpoint by this amount will PUSH the heating setpoint down to maintain
this separation. Same for setting the heating setpoint above the cooling setpoint, it will PUSH the
cooling setpoint up to maintain this separation.

Heating Delta Stage 1 ON Range: 1 to 8 degrees Default: 1

Sets the delta from setpoint that stage 1 heating starts.

Heating Delta Stage 1 OFF Range: 0 to 8 degrees Default: 0

Sets the delta from setpoint that stage 1 heating stops. Stage 1 turns off at setpoint + Delta Stage 1.

Heating Delta Stage 2 ON Range: 1 to 8 degrees Default: 2

Sets the delta from setpoint that stage 2 heating starts.

Heating Delta Stage 2 OFF Range: 0 to 8 degrees Default: 0

Sets the delta from setpoint that stage 2 heating stops. Stage 2 turns off at setpoint + Delta Stage 2.

Heating Delta Stage 3 ON Range: 1 to 8 degrees Default: 3

Sets the delta from setpoint that stage 3 heating starts.

Heating Delta Stage 3 OFF Range: 0 to 8 degrees Default: 0

Sets the delta from setpoint that stage 3 heating stops. Stage 3 turns off at setpoint + Delta Stage 3.

Cooling Delta Stage 1 ON Range: 1 to 8 degrees Default: 1

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Sets the delta from setpoint that stage 1 cooling starts.

Cooling Delta Stage 1 OFF Range: 0 to 8 degrees Default: 0

Sets the delta from setpoint that stage 1 Cooling stops. Stage 1 turns off at setpoint - Delta Stage

1.

Cooling Delta Stage 2 ON Range: 1 to 8 degrees Default: 2

Sets the delta from setpoint that stage 2 cooling starts.

Cooling Delta Stage 2 OFF Range: 0 to 8 degrees Default: 0

Sets the delta from setpoint that stage 2 Cooling stops. Stage 2 turns off at setpoint - Delta Stage

2.

Max Heat SP Range: 50F to 90F (4C-32C) Default: 90F (32C)

Sets the maximum heating setpoint value. Will not ramp or accept setpoints higher that this maximum.

Min Cool SP Range: 55F to 99F(10C-37C) Default: 55F (10C)

Sets the minimum cooling setpoint value. Will not ramp or accept setpoints lower than this minimum.

Minimum Run Time Range: 1- 9 Minutes Default: 3

Sets the minimum run time before a heating/cooling cycle can turn off.
Sets heating/cooling cycle time. Prevents rapid cycling.

Minimum Off Time Range: 5-9 Minutes Default: 5

Sets the minimum off time before another heating/cooling cycle can begin. Provides compressor short
cycle protection.

Fan Cycler Submenu

The fan cycler function cycles the HVAC system fan for an ON period followed by an Off period
continuously. Used to provide minimum air ventilation requirements. When the Fan ON time is
set to a value greater than 0, an additional “Cycler” FAN mode is present when pressing the FAN
button.

Fan ON Time Range: 0-120 minutes Default: 0 (=OFF)
Fan OFF Time Range: 10-120 minutes Default: 10

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Installer Settings Summary

Setting Range Default

Display Lock Y or N N Locks out front buttons
F/C Mode C or F F
Screen Timeout 0, 20-120 0 seconds

Schedule Enable Y or N N
Max heat setpoint 50F-90F (4C-32C) 90F (32C)

Min cool setpoint 55F-99F(10C-37C) 55F (10C)
Min Run Time (MRT) 1 – 9 3
Min Off Time (MOT) 5 – 9 5
Mechanical - Type Std or HP Std
Mechanical - Fan Type Gas or Elec Gas
Mechanical - C/O Type w/Heat or w/Cool w/Cool
Mechanical - 2nd Stage Heat Y or N N
Mechanical - Aux Heat Y or N Y
Mechanical - 2nd Stage Cool Y or N N

Filter Interval 300
Maint Interval 3000

H/C Delta 3 – 15 3
Heat Delta Stage 1 On 1 – 8 1
Heat Delta Stage 1 Off 0 – 8 0
Heat Delta Stage 2 On 1 – 8 2
Heat Delta Stage 2 Off 0 – 8 0
Heat Delta Stage 3 On 1 – 8 3
Heat Delta Stage 3 Off 0 – 8 0
Cool Delta Stage 1 On 1 – 8 1
Cool Delta Stage 1 Off 0 – 8 0
Cool Delta Stage 2 On 1 – 8 2
Cool Delta Stage 2 Off 0 – 8 0
Fan Cycler ON time 0 – 120 0 0 = Fan Cycler OFF
Fan Cycler Off Time 10 – 120 10

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HVAC System Connection

The thermostat connects to the HVAC system’s thermostat connections just like a traditional thermostat
does.

HVAC System Compatibility

The thermostat is compatible with most heating and cooling systems. There are two types of HVAC
systems: Standard (gas/electric) and Heat Pump systems. The system type is selectable from the
Installer Screen – System Settings – Mechanical Settings submenu.

For Standard HVAC systems: Gas heating or Electric heating.
For Heat Pump HVAC systems: supports changeover valve operation for either changeover with cooling

or changeover with heating.
Multi-Stage HVAC Compatibility
For Standard HVAC systems, the HVAC outputs support 2 stages of heating and 2 stages of cooling.
For Heat Pump HVAC systems, the HVAC outputs support 3 stages of heating (2 compressor/1 Aux Heat)

and 2 stages of cooling.

Remote Communications

The Z-Wave thermostats have a Z-Wave communications module for communicating to control systems
with Z-Wave capability.

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HVAC System Operation and Setup

General Heating and Cooling Operation

In the HEATING mode, the heating system will be turned on at one degree below the setpoint and will turn
off at the setpoint. This turn on and turn off offset is referred to as the heating setpoint “delta T” and is
adjustable in the Installer Settings menu of the THERMOSTAT. It is set to the one degree operation by
default.

In the COOLING mode, the cooling system will be turned on at one degree above the setpoint and will
turn off at the setpoint. Similarly, the cooling setpoint delta T is adjustable in the Installer Settings menu.

In the AUTO mode, the system will switch between heating and cooling as determined by the heating and
cooling setpoints and the current temperature. Once in a heating or cooling mode of operation, the
normal one degree setpoint control is maintained.

Setpoint Push. Heating and cooling setpoints are forced to maintain a separation between them, with a
default setting of 3 degrees. If the heating or cooling setpoint is changed to be within the setpoint delta,
the system will automatically “push” the other setpoint to maintain the setpoint delta separation. The H/C
setpoint delta is also adjustable in the Installer Settings menu of the THERMOSTAT.

Standard HVAC System Types

Gas or electric heating systems are considered “Standard” HVAC systems. These systems consist of an
indoor furnace/blower assembly and an outdoor AC condensing unit (for those systems with air
conditioning installed). These systems in general are referred to as central forced air HVAC systems.

You must configure the Thermostat to match your HVAC system type for correct system operation.

Setup
Standard System Type Selection

To configure the Thermostat for standard Gas/Electric HVAC system operation, change the Type in the
Installer Settings – System Settings – Mechanical Settings menu option to Gas/Elec.

Fan Type Selection

Gas systems do not require a fan output for heating operation. Set the Fan Type in the Installer Settings
– System Settings – Mechanical Settings – Fan Type to GAS.

Electric (and hydronic) heating systems do require a fan output with the call for heating. Set the Fan
Type in the Installer Settings – System Settings – Mechanical Settings – Fan Type to ELEC.

Be sure to check your HVAC system’s requirements.

Heat Pump HVAC System Types

Heat Pump HVAC systems are combined heating and cooling systems. The system consists of an indoor
“air handler” (a blower fan and coil assembly) and an outdoor unit. Heat pumps change from heating
mode to cooling mode by switching the refrigerant flow using a “changeover” or “reversing valve”. In both
heating and cooling operation the compressor and fan outputs are on and the state of the changeover
output determines if heating or cooling is being provided. Heat pumps can have one or two stages of
compressor operation plus an optional third stage of electric heat strips.

The third stage of heating will be turned on when the current temperature falls 3 deg below the current
setpoint and will turn off at the setpoint.

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Setup

Heat Pump System Type Selection

To set the Thermostat for Heat Pump HVAC operation, change the Type in the Installer Settings – System
Settings – Mechanical Settings menu option to Heat Pump.

Changeover Type Selection

Most heat pump systems are designed to work normally in the heating mode and require a change over
output for cooling output. Change the C/O Type in the Installer Settings – System Settings – Mechanical
Settings menu option to match your system needs.

Changeover with Cooling: Set C/O Type to w/Cool (This is the default setting).
Changeover with Heating: Set C/O Type to w/Heat.

Note: during Heat Pump operation the changeover relay, once engaged, will stay on until the
opposite HVAC call occurs.

Check your HVAC system requirements for correct settings.

Minimum Run Time (MRT)

The thermostat has a Minimum Run Time after the start of any heat or cool call. This minimum run time
assures even heating and cooling cycles. Minimum Run Time will keep the system on even if you change
the setpoint to a temperature that would satisfy the call, until the MRT expires. Changing the Mode to
OFF will cancel the MRT and the system will turn off immediately. MRT can be adjusted in the Installer
Settings Menu of the THERMOSTAT.

Note: MRT status is shown in the thermostat System Status LED on-screen label.

Minimum Off Time (MOT)

The thermostat has a Minimum Off Time after any heat or cool call. This delay prevents rapid
heating/cooling cycles and also provides “short cycle protection” for compressor calls. This delay may be
noticeable when you change a setpoint and it does not respond immediately due to another call that has
recently completed and the MOT delay timer is preventing the restart of the system. The MOT delay time
can be adjusted in the Installer Settings Menu of the THERMOSTAT. There is a minimum of 5 minutes
delay to assure compressor protection.

Note: MOT status is shown in the thermostat System Status LED on-screen label.

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INSTALLATION

Power

The thermostat requires 24VAC power from the HVAC system it is controlling. Connect the 24VAC
Common (typically the Blue wire/terminal) and 24VAC R (typically the Red wire/terminal) from the HVAC
system to the thermostats HVAC System terminal block 24VCom and 24V RH or 24V RC terminals (the
RH and RC terminals are default tied together)

Common or Split Transformer Systems

Most HVAC systems have a common heating and cooling transformer. A trace is connected to tie the RH
and RC inputs together for this configuration. If you have a system with separate heating and cooling
transformers, you will need to split the RH and RC jumper by cutting the trace on the PCB.

When wiring split systems, wire the heating systems 24VAC R (red wire) to the thermostat’s RH terminal,
and wire the cooling systems 24VAC R to the thermostat’s RC terminal. Also wire the cooling systems
24VAC Com to the thermostat’s 24VAC Com terminals.

Note: Do not split RC/RH for Heat Pump systems!

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HVAC SYSTEM CONNECTION

Standard Gas/Electric HVAC System Wiring

Installation Notes
Standard HVAC System Setup

System Type: Set the system type to Gas/Elect in the Mechanical Settings menu of the Installer

Setup. This is the default setting.

Single Stage systems use W1 for heating stage 1 and Y1 for cooling stage 1.
Two Stage Heating systems use W1 for stage 1 and W2 for stage 2 heating.
Two Stage Cooling systems use Y1 for stage 1 and Y2 for stage 2 cooling.
HVAC system transformer: If you have an integrated heating and cooling system with a single

transformer, do NOT cut jumper JP1. Wire the HVAC system’s 24VAC common (blue wire) to the
24Com terminal and the 24VAC Return (red) wire to either 24RH or 24RC terminal. This is typical of
most central systems.

If you have separate heating and cooling systems with separate transformers, cut jumper JP1. Wire
the heating 24V R (red) wire to the thermostat’s 24RH terminal. Wire the cooling systems 24V R
(red) wire to thermostat’s 24RC terminal. Also wire the cooling systems 24VAC Common (blue

wire) to the thermostat’s 24COM terminal.

RED

GREEN

WHITE

YELLOW

Z-WAVE Thermostat

W1 HEAT

JP1: internal RC/RH Jumper
See notes

24RC

ORANGE

BROWN

24RH

G FAN

W2/O

Y1 COMP

Typical HVAC system

thermostat wiring color codes.

Be sure to verify your systems

wiring color codes.

Y2 COMP

24COM

Standard HVAC System

G Fan

W 1 Heat Stage 1

Y1 Compressor Stage 1

R 24VAC RETURN

C 24VAC COMMON

THERMOSTAT CONNECTION

Y2 Compressor Stage 2

W2 Heat Stage 2

BLUE

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HVAC SYSTEM CONNECTION

Heat Pump HVAC System Wiring

Installation Notes
Heat Pump HVAC System Setup

System Type: Set the mechanical system type to Heat Pump in the Installer Settings Menu
Single Stage Compressor Systems use Y1 for stage 1 heating/cooling, and W1 for stage 2 Aux

Heating.

Two Stage Compressor Systems use Y1 for stage 1, Y2 for stage 2 heating/cooling, and W1 for stage
3 Aux Heating.

Change Over Valve: You must configure the thermostat’s changeover valve setting to work correctly with

your HVAC system. Check your system information to be sure.

• Changeover settings are made in the Installer Settings – System Settings - Mechanical Settings
menu.

• Changeover with cool is the default setting and typical for most systems.

• If you get cooling when you expect heating, change the C/O type to the opposite setting.

HVAC system transformer: Heat Pump systems have one system transformer. Do not cut the RC/RH
jumper. Wire the HVAC systems 24VAC common (blue wire) to the 24Com terminal, and the 24VAC
return (red wire) to the 24RC or 24RH terminal.

RED

GREEN

WHITE

YELLOW

Z-WAVE Thermostat

W1 HEAT

JP1: internal RC/RH Jumper
Do not cut for HP systems

24RC

ORANGE

BROWN

24RH

G FAN

W2/O or B

Y1 COMP

Typical HVAC system

thermostat wiring color codes.
Be sure to verify your systems

wiring color codes.

Y2 COMP

24COM

Heat Pump HVAC System

G Fan

W 1 Aux Heat

Y1 Compressor Stage 1

R 24VAC RETURN

C 24VAC COMMON

THERMOSTAT CONNECTION

Y2 Compressor Stage 2

Change Over Valve O or B

BLUE

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FCC

INFORMATION TO USER

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) This device must accept any interference
received, including interference that may cause undesired operation.

This equipment has been tested and found to comply with the limits for Class B Digital Device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can
be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures.

• Reorient or relocate the receiving antenna

• Increase the separation between the equipment and receiver

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected

• Consult the dealer or an experienced radio/TV technician for help

Any changes or modifications not expressly approved by the party responsible for compliance could void
the user’s authority to operate the equipment.