Honeywell Home T3 Pro Thermostat Installation Guide

Honeywell Home T3 Pro Thermostat Installation Guide

Package Includes:

• T3 Pro Thermostat
• UWP™ Mounting System
• Decorative Cover Plate – Small; Size 4.72” H X 5.9” W (120 mm H X 150 mm W)
• Screws and Anchors
• 2 AA Batteries
• Thermostat Literature

Optional Cover Plate installation

NOTE: If Optional Cover Plate is not required, see “UWP Mounting System installation” on next page. Use the Optional Cover Plate when you need to cover paint gaps from the old thermostat.

1.  Before starting, turn the power off at the breaker box or switch.
2. Mount the Cover Plate to the wall using any of the 6 screw holes. Insert and tighten the mounting screws supplied with the Cover Plate. Do not overtighten. See Figure 1. Make sure the Cover Plate is level.
3. Attach the UWP by hanging it on the top hook of the Cover Plate and then snapping the bottom of the UWP in place. See Figure 2.
4. If mounting to a wall with no existing wall anchors: a. Position the Cover Plate on wall. Level and mark hole positions. See Figure 1. b. Drill holes at marked positions, and then lightly tap supplied wall anchors into the wall using a hammer. • If your box contains red anchors, drill 7/32” (5.6 mm) holes. • If your box contains yellow anchors, drill 3/16” (4.8 mm) holes. • Use 2x supplied screws (#8 1-1/2” (38 mm) for red anchors and #6 1-1/2” (38 mm) for yellow anchors).

UWP Mounting System installation

1.  Before starting, turn the power off at the breaker box or switch. Open package to find the UWP. See Figure 1.
2. Position the UWP on wall. Level and mark hole positions. See Figure 2. Drill holes at marked positions, and then lightly tap supplied wall anchors into the wall using a hammer. ‒ If your box contains red anchors, drill 7/32” (5.6 mm) holes. ‒ If your box contains yellow anchors, drill 3/16” (4.8 mm) holes.
3. Pull the door open and insert the wires through wiring hole of the UWP. See Figure 3.
4. Place the UWP over the wall anchors. Insert and tighten mounting screws supplied with the UWP. Do not overtighten. Tighten until the UWP no longer moves. Close the door. See Figure 4.

NOTE: If Optional Cover Plate is required, see “Optional Cover Plate installation” on previous page.

Power options

Setting Slider Tabs (built-in jumper)

UWP Wiring terminal designations

* Terminal can be jumped using Slider Tab. See “Setting Slider Tabs” above.

Wiring conventional systems: forced air and hydronics

Thermostat mounting

1. Push excess wire back into the wall opening.
2. Close the UWP door. It should remain closed without bulging.
3. Align the UWP with the thermostat, and push gently until the thermostat snaps in place.
4. Turn the power on at the breaker box or switch.

System operation settings

1. Press Menu, and then press the Mode (+) button to cycle to the next available System mode. 2. Cycle through the modes until the required System mode is displayed, and then press Done. NOTE: Available System modes vary by model and system settings. System modes: ‒ Auto: Thermostat selects heating or cooling as needed. ‒ Heat: Thermostat controls only the heating system. ‒ Cool: Thermostat controls only the cooling system. ‒ Em heat (TH3210U only): For heat pumps with auxiliary heat. Thermostat controls auxiliary heat. Compressor is not used. ‒ Off: Heating and cooling system is off. Fan will still operate if fan is set to On. NOTE: Heat On/Cool On may flash for 5 minutes due to compressor protection. Fan operation settings 1. Press Menu, and then press the Fan (-) button to cycle to the next available Fan mode. 2. Cycle through the modes until the required Fan mode is displayed, then press Done. 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.

Installer setup (ISU)

NOTE: The thermostat enters installer setup the first time it is powered up during installation. To re-enter the System Setup from the Home Screen, press and hold the Menu button for approximately 5 seconds.

1. Select System Setup options. Press Edit (-) to change values or select from available options. Then press Next (+) to save changes and advance to the next System Setup number. See “System Setup options” on the next page for a full list of System Setup numbers and options. Repeat until all of the System Setup options have been set, and then press Done. The thermostat will save and exit to the home screen.
2. Continue to “Installer setup (ISU)” on page 6.

Installer setup (ISU)

Installer setup (ISU) (continued)

NOTE: Once you have cycled through all of the System Setup numbers, press Done to save and exit to the home screen.

Setup Complete

You have now finished installing and setting up your thermostat.
CAUTION:
ELECTRICAL HAZARD Can cause electrical shock or equipment damage. Disconnect power before beginning installation.
CAUTION:

EQUIPMENT DAMAGE HAZARD Compressor protection is bypassed during testing. To prevent equipment damage, avoid cycling the compressor quickly. CAUTION:

MERCURY NOTICE If this product is replacing a control that contains mercury in a sealed tube, do not place the old control in the trash. Contact your local waste management authority for instructions regarding recycling and proper disposal.
CAUTION:
ELECTRONIC WASTE NOTICE The product should not be disposed of with other household waste. Check for the nearest authorized collection centers or authorized recyclers. The correct disposal of end-of-life equipment will help prevent negative consequences for the environment and human health https://customer.resideo.com/en-US/support/residential/codes-and- standards/FCC15105/Pages/default.aspx

Customer assistance

For assistance with this product, please visit customer.resideo.com. Or call Customer Care toll-free at 1-800-468-1502.

FAQS

Will this work for 2 stage heat?

Heat and ac only, will not work with 2 stage but a great unit otherwise.

What is the difference between this th3110u2008 pro version and the previous model rth5160d1003?

The sub base on the rth5160d1003 is a little different I believe the batteries go in the sub base where the th3110u2008

does it have a c wire? I want a direct connect not battery powered

Yes. C option is available

How do you turn off the fan ? Running non stop

You ned to push the Menu button and o to heat or cool and on the bottom of the screen you will see fan than push the button to set it to AUTO not ON!

will this thermostat work with oil tank systems?

Yes it will

Can this be used for gas furnaces?

Absolutely can

Will this thermostat automatically switch between heat and cool for the set temperature?

Yes

On a 2 wire system with just a red and yellow wire (propane fire with fan), should the yellow go on W or C?

On a two wire system (just heat) typical color coded wires are Red and White. Red or R is power. You have to check the wiring on the furnace to see if it’s connected to R. Just because it’s Red doesn’t meant it’s connected properly on the unit. Then your white wire would go to W respectively. If you have a yellow wire for some reason because that’s what color someone else ran as long as it is on W at the furnace connect it to W on the thermostat. For a T-3 is also needs power to work I can’t remember if it has battery’s for power. If no batteries for power you will need to run another wire from C on the unit to C on the thermostat. ( common power). Yellow colored wire is typically used to switch on an outdoor A/C unit. Again color of wire is not so important as long as the wires are connected to the respective terminals on heating equipment and thermostat

What is the difference between the t2 and t3 model?

The t3 is programmable. The 2 is not

Will this work for electric baseboard heaters?

It can. It works for both cooling and heating.

What is the range of possible temperature settings low to high?

60 to 95. You can set low and high limits. Both on heating and cooling.

How do I reset my Honeywell T3 pro?

Power off the thermostat and remove the batteries.  Put the batteries in the wrong way, with negative to positive and positive to negative. Wait ten seconds and put them back in the correct way. Your thermostat will be reset to factory settings.

What is temporary hold on Honeywell thermostat?

The temporary hold setting is  when you change the temperature setting to a different temperature and it stays at that setting until the next schedule change. The permanent hold setting holds the temperature setting you have chosen for an indefinite time. This overrides your scheduled settings.2

How do you manually reset a thermostat?

Common methods for resetting a thermostat include  installing the battery backward for five seconds, pushing a recessed reset button with a pin or paper clip, or shutting off the breaker to the thermostat for 30 seconds.

How long does temporary setting last on Honeywell thermostat?

A temporary hold will keep the HVAC system set to the held temperature for a temporary period of time of  less than 12 hours  or until the hold is cancelled. A permanent hold will keep the HVAC system set to the held temperature permanently, until the hold is cancelled.

Why Does My Honeywell thermostat say permanent hold?

A permanent Hold will  keep the temperature held at the set level until it is manually overridden by changing the temperature. It will never expire on its own.

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