Interlogix IS-ZW-TSTAT-500 Operation manual

© 01/01/19 UTC Fire & Security. All rights reserved. 1 / 14 P/N 466-5519 • REV 0.01 • 24MAY19
24VAC or Battery Powered Z-Wave Thermostat
Installation/User Guide
Content
Description........................................................................................1
Battery Powered Operation...............................................................1
Installation Steps...............................................................................2
Remove old thermostat.....................................................................2
Heat Pump HVAC Systems Wiring...................................................3
Mount the thermostat........................................................................3
Standard Gas/Electric HVAC System Wiring....................................5
Heat Pump HVAC System Wiring.....................................................6
Thermostat Setup: Configure for HVAC System...............................7
Changing the HVAC System Setup ..................................................7
Menu Options....................................................................................7
Advanced System Settings Menu.....................................................8
Advanced Settings............................................................................8
Operation ........................................................................................10
Backlight and Button Operation ......................................................10
Thermostat Backlight Display..........................................................10
Setpoint Change .............................................................................11
Fan Modes......................................................................................11
Thermostat Menu Mode..................................................................12
Menu Mode Options........................................................................12
Thermostat Operation.....................................................................13
Minimum Run Time (MRT)..............................................................13
Minimum off Time (MOT)................................................................13
Z-Wave
®
Operation.........................................................................13
FCC Compliance.............................................................................14
Contact Information
For contact information, see www.utcfireandsecurity.com or
www.interlogix.com.
For technical support, toll-free: 888.437.3287 / 855.286.8889
in the US including Alaska, Hawaii, Puerto Rico, and
Canada.
Outside toll-free area, contact your dealer.
© 2019 UTC Fire & Security Americas Corporation, Inc.
Interlogix is part of UTC Climate Controls & Security, a unit
of United Technologies Corporation.
All rights reserved.
Safety Information
WARNING: CHOKING HAZARD. The product accessory bag
contains items that could be choking hazards. Please
keep away from small children.
AVERTISSEMENT: Le sachet de produits accessoires contient des
éléments qui pourrait présenter un danger
d’étouffement. Veuillez garder hors de la
portée des jeunes enfants.
Description
This thermostat is compatible with most HVAC systems,
including the following:
x24VAC systems
Note: Requires both the 24VAC R and C (“common”) wires unless
battery powered.
xStandard gas/oil/electric heating systems
1 stage heating and cooling
2 stage heating and cooling
xHeat Pump systems:
1 stage heating and cooling
2 stage heating and cooling
2
nd
or 3
rd
stage Auxiliary heating (heat strips)
Warning! Do NOT use for line voltage controls
(120/240VAC)
The thermostat can either be powered by batteries or
24VAC.
Battery Powered Operation
The thermostat can be powered by four AA Alkaline
batteries. The thermostat will operate for approximately two
years on four AA Alkaline batteries depending on the
frequency of user operations and backlight operation.
Always use alkaline batteries and replace all four at the
same time with NEW batteries.

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Z-Wave Operation when Battery Powered
IMPORTANT: If the thermostat is installed on a Z-Wave
network, while it is battery powered, it
does not work as a Z-Wave repeater.
24VAC Powered Operation
Powering the thermostat with 24VAC power requires both
the C wire (24VAC common wire - typically blue) and the R
wire (24VAC hot wire - typically Red). If the C wire is not
available, then batteries are required.
Note: If the thermostat is powered from 24VAC, do not install
batteries!
Z-Wave Operation when 24VAC powered
If the thermostat is installed on a Z-Wave network while it is
24VAC powered, it operates as an always-on Z-Wave
repeater.
Installation Steps
1. Remove old thermostat
2. Install TBZ500 IS-ZW-TSTAT-500 (W for whit, B for
black)
3. Set up the thermostat for the HVAC system
4. Enroll on Z-Wave network
Remove old thermostat
1. Turn off power to the HVAC system. Usually at the
HVAC system or the circuit breaker panel.
2. Remove cover of old thermostat to expose the wiring
terminals.
xTake a picture of the wiring terminals! This will help
with troubleshooting later if needed.
xMark the wires attached to the terminals with the
wiring labels included.
3. Use the terminal labels and not the wiring color to mark
the wires.
4. Remove the old thermostat base.
CAUTION: Don’t let the wires slip into the wall.
Figure 1: Thermostat Wiring
Note*: The C wire (24V common) may not be present.
If C wire is not present, the thermostat must be powered by
batteries.
ATTENTION: If the C wire is present, you can power,
DO NOT INSTALL BATTERIES!
Note: Mark the wires according to the terminal markings. There
may be additional wires such as Y2, W2. If you have RC
and/or RH connections, see below. Other wires are not
used:
xWiring colors: While the wiring terminals markings are
intended to match the wire color (R=Red,G=Green,
W=White,Y=Yellow,O=Orange), not all installations
were correctly installed this way. Be sure to follow the
terminal marking when marking the wires, even if the
wire color doesn’t match.
x24VAC Power: The thermostat requires the 24VAC C
(common) wire be connected to operate without
batteries. Otherwise 4 x AA batteries are required.
Note that the 24VAC C common wire (usually Blue) may
be present but not connect to 24VAC common at the
HVAC system end. Be sure to check for 24V across R
and C terminals if the thermostat does not power up
without batteries. If there is no C “common” wire,
batteries are required.

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Connecting Wires (most common connections)
Mount the thermostat base to the wall using the wall anchors
and screws provided; level as needed. Connect the wires
according to the HVAC system type as below.
Standard Gas/Electric HVAC System Wiring
Figure 2: Single stage heating and cooling
Note: Connect the wires as marked from the HVAC system to the
corresponding terminals on the thermostat back.
*C wire (24VAC common) may not be present. If not,
batteries must be installed.
R vs RC and RH Connections
xSingle Transformer HVAC Systems: Typical modern
central HVAC installations have an integrated heating
and cooling system with a single 24VAC transformer.
For these systems, there is only one 24VAC “R” wire
and it can connect to either the RC or RH terminal on
the thermostat. The thermostat is supplied with an RC-
RH jumper installed. Do not remove the jumper for
common transformer HVAC systems.
xSeparate Transformer HVAC Systems: Some
installations may have separate heating and cooling
systems with separate 24VAC transformers. For those
systems there will be a separate “R” wire for the heating
system (RH) and cooling system transformers (RC).
To connect separate transformer systems, FIRST REMOVE
THE SUPPLIED RH-RC JUMPER. Then connect the
heating “R” wire to the RH terminal and the cooling “R” wire
to the RC terminal on the thermostat.
Heat Pump HVAC Systems Wiring
Figure 3: Single stage heating and cooling
Notes: Connect the wires as marked from the HVAC system to the
corresponding terminals on the thermostat back.
*C wire (24VAC common)
Heat Pump systems usually have the C wire connected to
the thermostat. If there isn’t a C wire, batteries must be
installed.
** O (Orange) or B (Brown) wire (changeover valve)
connect to the W2/O terminal on the thermostat.
Be sure to set the correct changeover operation (O =
changeover with Cool, B = changeover with Heat) in the
SETUP menu.
Connect the R wire to either RC or RH terminal.
Finish Wiring
xIf you have additional wires for 2 stage systems (W2,
Y2), see the wiring diagrams on page 5 and 6.
xCheck that the wires are screwed into the terminal
blocks firmly.
xGently pull on the wires to confirm the connection.
xPush all the excess wiring back into the wall.

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Mount the thermostat
x24VAC Powered Thermostat: If the thermostat is
24VAC powered (24VAC common “C” wire is
connected), DO NOT INSTALL BATTERIES!
Figure 4: 24VAC Powered Thermostat
1. Install the thermostat on to the base.
2. Turn on power to the HVAC system/thermostat.
xBattery Powered Thermostat: If the thermostat is
battery powered (NO 24VAC common “C” wire
connected), install 4 NEW Alkaline AA batteries into the
back of the thermostat.
Figure 5: Battery Powered Thermostat
1. Install the thermostat on to the base.
2. Turn on power to the HVAC system/thermostat.

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Standard Gas/Electric HVAC System Wiring
Figure 6: Thermostat wiring connection with standard HVAC system
Note: Remove the factory installed RC/RH jumper.
Thermostat Setup: Standard Gas/Electric HVAC
Systems
For Single Stage Heat/Cool Systems:
Go to the Menu screen by pressing and holding the FAN
button for 5 seconds.
Press the down arrow to select the SYSTEM menu and
press Select.
CAUTION: Typical thermostat wiring colors, verify that
original wiring matches. Colors may be different.
Set the following:
System Type
xSet to STANDARD
Fan Type
xSet to GAS for typical gas furnace (fan is controlled by
the furnace)
xSet to ELECTRIC for electric heat (fan on with heat
call).
For Two Stage Heat/Cool Systems:
Go to ADVANCED SYSTEMS SETTINGS menu.
From the Setup menu screen, press and hold the Fan
button and Down arrow buttons for 5 seconds. Use
the Down arrow button to select the following:
x2nd Stage Heat Enable: Enable second stage heating
output.
If a single stage heating system, leave this set to N.
If a 2 stage heating system, set to Y to enable.
x2nd Stage Cool Enable: Enable second stage cooling
output.
If a single stage cooling system, leave this set to N.
If a two stage cooling system, set to Y to enable.
Default Thermostat Setup:
xType: Standard HVAC
xFan Type: Gas Heat
1 Stage heating
1 Stage cooling
Note: No Setup change required for this configuration.

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Heat Pump HVAC System Wiring
Figure 7: Thermostat Wiring connection with heat pump HVAC system
CAUTION: Typical thermostat wiring colors, verify that original wiring matches. Colors may be different.
Note: If you get heating when you expected cooling or vice versa, change the Change Over type to the opposite setting.
Thermostat Setup: Heat Pump HVAC Systems
For Single Stage Heat/Cool Systems:
1. Go to the Menu screen by pressing and holding the FAN
button for 5 seconds.
2. Press the down arrow to select the SYSTEM menu
and press Select.
Set the following:
xSystem Type: Set to HEAT PUMP
xChange Over: For changeover with cooling systems
(Orange wire): set to WITH COOL (most common and
default setting).
For changeover with heating systems (Brown wire): set
to WITH HEAT.
You must configure the thermostat’s changeover valve
setting to work correctly with your HVAC system.
Check your system information to be sure and note the color
of original thermostat wire and the terminal it was connected
to.
No matter what the old stat connection was (O or B),
connect the wire to the thermostats W2/O terminal.

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For Two Stage Heat/Cool Systems:
Go to Advanced Systems Settings menu. From the Setup
menu screen, press and hold the Fan and Down arrow
buttons for 5 seconds. Use the Down arrow button
to select the following:
xAUXHEAT: If you have auxiliary heat strips, set this to Y
to enable. (Default is Y).
x2nd Stage Heat Enable: Enable second stage heating
outputs.
If a single stage heating system, leave this set to N
If a 2 stage heating system, set to Y to enable.
x2nd Stage Cool Enable: Enable second stage cooling
outputs.
If a single stage cooling system, leave this set to N.
If a two stage cooling system, set to Y to enable.
Thermostat Setup: Configure for HVAC
System
The thermostat must be set up for the correct HVAC system
type and configuration for proper operation.
Preset HVAC System settings
The thermostat is preset for the following typical HVAC
system configuration:
xHVAC system type: Standard gas/electric
xHVAC fan type: Gas heat
xHVAC heating stages: one
xHVAC cooling stages: one
If the thermostat is installed on this type HVAC system,
the System setup does not need to be changed.
Installation is complete.
For thermostats installed on a Heat Pump HVAC system or
any HVAC configuration other than the preset settings, the
System settings need to be changed in the SYSTEM setup
menu to match the HVAC system.
Changing the HVAC System Setup
To change the thermostats HVAC system settings, first
select the Menu Screen and then select the SYSTEM menu.
Follow instructions below to access the SYSTEM menu.
Note: To conserve battery life, the thermostat backlight turns off
after a short time of no activity. The first press of any button
will turn on the backlight but will not initiate any action other
than turning on the backlight. Press the button again to
initiate the action desired. If the backlight is already on,
button presses work with the first press.
Go to Menu Screen
From the Thermostat Main Screen, press and hold the FAN
button until the Menu screen is displayed.
Figure 8: Main Screen
Menu Options
When the thermostat Menu Screen is displayed, use the Up
or Down arrow buttons to scroll through the
following options:
xSETUP (user preference settings)
xSYSTEM (HVAC system setup)
xZWAVE (install/uninstall from Z-Wave network)
xHUMIDITY
xINFO (firmware versions and Z-Wave network
information)

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Select System setup
To change the HVAC system default settings, scroll down to
the SYSTEM menu item and press “Select”.
System Setup Menu
The SYSTEM menu is used to set up the thermostat for the
correct HVAC system type.
System Type
xFor Standard Gas/Electric systems, select “Standard”.
This is the default setting.
xFor Heat Pump systems, use the Up/Down arrows to
change to “Heat Pump”
xPress Select to set.
xPress Done to exit
Fan Type (For Standard HVAC systems only)
xFan type depends on the heating system type.
xFor Gas heat: select “GAS”. This is the default setting.
xFor Electric heat: use the Up/Down arrows to change to
“ELECTRIC”.
xPress Select to set
xPress Done to exit
Changeover Type (for heat pump HVAC systems
only)
The changeover (or reversing) valve is used to change from
heating to cooling operation. It is either a changeover with
cooling type (Orange wire) or changeover with heating type
(Brown wire). Most are changeover with cooling, which is
the default setting.
xFor Changeover with Cooling systems (Orange wire),
select “WITH COOL”. This is the default setting.
xFor Changeover with Heating systems (Brown wire),
use the Up/Down arrows to change to “WITH HEAT”.
xPress Select to set
xPress Done to exit
Not sure which Changeover type?
Check the existing thermostat connections to help determine
this.
xIf the original system had an orange wire connected to
the “O” terminal, then this is a “changeover with cool”
system.
xIf there was a Brown wire connected to the “B” terminal,
then this is a “change over with heat” system.
xSet the Change Over setting accordingly.
CAUTION: These are typical wiring colors/connections
and may differ.
xIf heating comes on when cooling is expected or
vice versa, change the “Change Over Type” to the
opposite setting.
Advanced System Settings Menu
The Advanced System Settings Menu provides for addition
system setup options. These settings can affect system
operation and should only be changed by qualified HVAC
installers.
To access the Advanced System Settings menu, first press
and hold the Fan button to get to the MENU screen.
Continue to hold down the Fan button and press and
hold the Down arrow button for 5 seconds. The first
menu item in the Advance System Settings menu “Display
Lock” will be displayed. Use the Up/Down arrow buttons to
scroll through the menu options to the desired setting. Press
“Select” (Mode) button to change a setting. Once it
begins to flash, use the Up/Down buttons to select the
desired setting. Press the “Select” button to accept the
new setting (flashing will stop).
Advanced Settings
Table 1: Advance Settings
Display Lock Range: Y or N Default: N
xY = Display LOCKED
xN = Display UNLOCKED
Allows the thermostat buttons to be locked. When the
buttons are locked, none of the thermostat buttons will
function as normal.
To unlock the thermostat, press and hold the FAN button
for 5 seconds to access the Setup screen (it’s the
only button that works in the lock mode). Access the
Advanced Settings Menu (as above) to turn the Display
Lock off.
Test Mode Range Y or N Default: N
Test mode shortens the system built-in delays (like MOT
and MRT)
xY= Test mode on. Reduces all delays to 10 sec for
quicker system testing
xN= Test mode off. Normal system delays
Test mode will time out after 30 min and return to normal
operation.

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Table 1: Advance Settings continued
Aux Heat
Enable* Range: Y or N Default: Y
Enables the Auxiliary Heat operation.
Typically, the Aux Heat will be heat-strips in a Heat Pump
system
Aux heat control is wired to the W1 terminal.
Note*: Heat pump systems only.
2nd Stage Heat
Enable Range: Y or N Default: N
Enables the 2nd Stage Heat operation
2nd Stage Cool
Enable Range: Y or N Default: N
Enables the 2nd Stage Cool operation
Minimum Run
Time Range: 1- 9
Minutes Default: 3
Sets the Minimum Run Time (MRT) delay before a
heating/cooling cycle can turn off.
Sets heating/cooling cycle time. Prevents rapid on/off
cycling.
Minimum Off
Time Range: 5-9
Minutes Default: 5
Sets the Minimum Off Time (MOT) delay before another
heating/cooling cycle can begin. Provides compressor
short cycle protection. “WAIT” is displayed on screen
when active.
Heat Setpoint
Max Range: 30°F to
109°F (0°C-
43°C)
Default: 90°F
(32°C)
Sets the maximum heating setpoint value. Will not ramp
or accept setpoints higher than this maximum.
Cool Setpoint
Min Range: 33°F to
112°F (2°C-
45°C)
Default: 60°F
(15°C)
Sets the minimum cooling setpoint value. Will not ramp or
accept setpoints lower than this minimum.
Heat Blower Off
Delay Range: 0-90
seconds Default: 0 (off)
Sets the system blower delay off time after a heat call
ends (fan purge).
Cool Blower Off
Delay Range: 0-90
seconds Default: 0 (off)
Sets the system blower delay off time after a cool call
ends (fan purge).
Heat - Cool
Delta Range: 3° - 15° Default: 3°F
(1°C)
Sets the minimum separation between heating and
cooling setpoints.
Table 1: Advance Settings continued
Setpoint Push
xAttempts to lower the cooling setpoint below the
heating setpoint will PUSH the heating setpoint down
to maintain the heat/cool delta separation.
xAttempts to set the heating setpoint above the cooling
setpoint will PUSH the cooling setpoint up to maintain
the setpoint heat/cool delta separation.
Heating Stage 1
On Threshold Range: 1° to 6° Default: 1°
Sets the delta from setpoint that stage 1 heating starts.
Heating Stage 1
Off Threshold Range: 0° to 5° Default: 0°
Sets the delta from setpoint that stage 1 heating stops.
Stage 1 turns off at setpoint + Delta Stage 1.
Heating Stage 2
On Threshold Range: 2° to 7° Default: 2
Sets the delta from setpoint that stage 2 heating starts.
Heating Stage 2
Off Threshold Range: 0° to 6° Default: 0°
Sets the delta from setpoint that stage 2 heating stops.
Stage 2 turns off at setpoint + Delta Stage 2.
Aux Heat On
Threshold Range: 3° to 8° Default: 3°
Sets the delta from setpoint that stage 3 heating starts.
Aux Heat Off
Threshold Range: 0° to 7° Default: 0°
Sets the delta from setpoint that stage 3 heating stops.
Stage 3 turns off at setpoint + Delta Stage 3.
Cooling Stage 1
On Threshold Range: 1° to 7° Default: 1°
Sets the delta from setpoint that stage 1 cooling starts.
Cooling Stage 1
Off Threshold Range: 0° to 6° Default: 0°
Sets the delta from setpoint that stage 1 cooling stops.
Stage 1 turns off at setpoint - Delta Stage 1
Cooling Stage 2
On Threshold Range: 2° to 8° Default: 2°
Sets the delta from setpoint that stage 2 cooling starts.
Cooling Stage 2
Off Threshold Range: 0° to 7° Default: 0°
Sets the delta from setpoint that stage 2 cooling stops.
Stage 2 turns off at setpoint - Delta Stage 2.
Restore
Defaults Range: Yes, No Default: No
Restores all settings to factory defaults.
Press Yes to restore defaults
Press No to exit and not restore defaults

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Operation
Backlight and Button Operation
The thermostat backlight is normally set to go out after 20
seconds of no button presses to conserve battery power. If
the backlight is off, the first button press of any button will
only turn on the backlight, see Figure 1 (items 5-8). Once the
backlight is on, the buttons function normally.
Figure 9: Main Thermostat Screen
Figure 1 Legend:
1) Backlit Display
2) Text Display Line
3) Room Temperature
4) Button Mode Status Icon
5) Mode Touch Buttons
Heating/cooling Mode Selections
6) Fan Mode Icon
7) Temperature Setting Touch Button (Warmer)
8) Temperature Setting Touch Button (Cooler)
Thermostat Backlight Display
Figure 10: Thermostat Backlight Display
(IS-ZW-TSTAT-500)
Table 2: System Operation Modes
Icon Description
System is ON and heating. If flashing,
minimum run time (MRT) is active
System is ON and cooling. If flashing,
minimum run time (MRT) is active
LLOW BATTY
Battery indicator
Display lock indicator
Z-Wave network indicator
Stage Indicators
x“1” = Stage 1 heating or cooling is ON
x“2” = Stage 2 heating or cooling is ON
x“3” = Stage 3 heating (Aux Heat) is ON
For heat pump systems only:
x“Heat-E” = Emergency heat mode active
Figure 11: Setting the System Mode
System Modes
xOff: System is off. No heating or cooling will come on.
If system was on, it will turn off immediately.
xHeat: Only heating will occur.
xCool: Only cooling will occur.
xAuto: 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.