T6 Pro Programmable Thermostat
User Manual and Installation Guide
Honeywell Home Pro Series
Package Contents
The T6 Pro Programmable Thermostat Installation Instructions package includes:
- T6 Pro Thermostat
- UWP Mounting System
- Honeywell Standard Installation Adapter (J-box adapter)
- Honeywell Decorative Cover Plate – Small; size 4-49/64 in x 4-49/64 in x 11/32 in (121 mm x 121 mm x 9 mm)
- Screws and anchors
- 2 AA Batteries
Optional Cover Plate Installation
Use the Optional Cover Plate when:
- Mounting the thermostat to an electrical junction box.
- Covering a paint gap from an old thermostat.
Installation Steps:
- Separate the Junction Box Adapter from the Cover Plate.
- Mount the Junction Box Adapter to the wall or an electrical box using any of the eight screw holes. Insert and tighten mounting screws. Ensure the Adapter Plate is level. Do not overtighten.
- Attach the UWP by hanging it on the top hook of the Junction Box Adapter and then snapping the bottom of the UWP in place.
- Snap the Cover Plate onto the Junction Box Adapter.
UWP Mounting System Installation
Before starting: Turn off power at the breaker box or switch. Open package to find the UWP.
- Position the UWP on the wall. Level and mark hole positions.
- Drill holes at marked positions. For drywall, drill 7/32" holes and lightly tap supplied wall anchors into the wall using a hammer.
- Pull the door open and insert the wires through the wiring hole of the UWP.
- Place the UWP over the wall anchors. Insert and tighten mounting screws supplied with the UWP until it no longer moves. Close the door.
Power Options
AC Power
Insert R and C wires into designated terminals for primary AC power. The C terminal is optional if batteries are installed, but it is recommended. Remove wires by depressing the terminal tabs.
Battery Power
Insert AA batteries for primary or backup power.
Setting Slider Tabs
R Slider Tab
Use the built-in jumper (R Slider Tab) to differentiate between one or two transformer systems:
- If there is only one R wire, and it is connected to the R, Rc, or RH terminal, set the slider to the up position (1 wire).
- If there is one wire connected to the R terminal and one wire connected to the Rc terminal, set the slider to the down position (2 wires).
NOTE: Slider Tabs for U terminals should be left in place for T6 Pro models.
Wiring Terminal Designations
The following table lists common terminal designations. Note that not all terminals may be used, depending on the system type. Commonly used terminals are shaded.
| Terminal | Function |
|---|---|
| S | Universal input for wired indoor or outdoor sensors |
| L/A (-A) | Heat Pump fault input (most common case) |
| O/B | Changeover valve |
| Y | Compressor contactor (stage 1) |
| Y2 | Compressor contactor (stage 2) |
| G | Fan Relay |
| C | 24VAC common. For 2 transformer systems, use common wire from cooling transformer. |
| U | Unused |
| R | 24VAC power from heating transformer* |
| Rc | 24VAC power from cooling transformer* |
| AUX-W2 | Auxiliary heat relay / Heat relay (stage 2) |
| E | Emergency Heat relay |
| W | Heat relay (stage 1) |
| K | Connect to K on Wire Saver Module** |
* Terminal can be jumped using Slider Tab. See “Setting Slider Tabs" above.
** The THP9045A1023 Wire Saver Module is used on heat/cool systems when you only have four wires at the thermostat and need a fifth wire for a common wire. Use the K terminal in place of the Y and G terminals on conventional or heat pump systems to provide control of the fan and the compressor through a single wire; the unused wire then becomes your common wire. See THP9045 instructions for more information.
Thermostat Mounting
- Push excess wire back into the wall opening.
- Close the UWP door. It should remain closed without bulging.
- Align the UWP with the thermostat, and push gently until the thermostat snaps in place.
- Turn the power on at the breaker box or switch.
System Operation Settings
Press the Mode button to cycle through the available System modes. Leave the desired mode displayed to activate it.
NOTE: Available System modes vary by model and system settings.
System Modes:
- Auto
- Heat
- Cool
- Em Heat (Emergency Heat)
- Off
Fan Operation Settings
Press the Fan button to cycle through the available Fan modes. Leave the desired mode displayed to activate it.
NOTE: Available Fan modes vary with system settings.
Fan Modes:
- Auto: Fan runs only when the heating or cooling system is on.
- On: Fan is always on.
- Circ: Fan runs randomly about 33% of the time.
Installer Setup (ISU)
To enter the advanced menu, press and hold the CENTER and buttons for approximately 3 seconds.
- Press Select to enter ISU.
- Press Select to cycle through menu setup options.
- Press the + or - buttons to change values or select from available options.
- Press Select to confirm your settings, or press Back to ignore changes and return to the ISU menu screen to continue editing another setup option.
- To finish the setup process and save your settings, press Home and return to the Home screen.
NOTE: A complete list of all setup (ISU) parameters and options is provided in this manual.
Installer System Test
To perform a System Test:
- Press and hold the CENTER and buttons for approximately 3 seconds to enter the advanced menu.
- Navigate to TEST and press Select to enter System Test.
- Use the + or - buttons to change between Heat, Cool, Fan, Em Heat, or Ver (thermostat version information). Press Select.
- Press the + or - buttons to turn stages on one at a time, and press the other to turn them off.
- Use the Home button to exit the System Test.
Documents / Resources
Read More About This Manual & Download PDF:
Honeywell Series Pro Thermostat [pdf] User Guide/Manual
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