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2

Tools you will need

You may need

Wire stripper

Needle-nose pliers

Drill and  

drill bit (7/32 in)

Smartphone

To install your 

thermostat and 

photograph existing 

wiring. 

Honeywell Home app

To configure your 

system and connect to 

your smartphone.

Small flat head screwdriver

Phillips screwdriver

Pencil

Level

Home Wi-Fi 

Password

Compatibility

•  Compatible with most heating, cooling, and heat pump systems
•  Required: 24 VAC power (“C” wire). C-Wire Power Adapter Included to 

provide power if needed

•  Does not work with electric baseboard heat (120-240V)
•  Does not work with millivolt systems
•  Does not support input (S terminals) for indoor and outdoor sensors
•  Does not support relay (U terminals) for ventilation
•  Android or iOS smartphone, tablet, or device 

For help, contact

WEB 

honeywellhome.com/support

PHONE

 1-800-633-3991

SOCIAL 

Twitter: @Honeywell_Home,  Facebook: Honeywell Home

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: EQUIPMENT DAMAGE HAZARD

Compressor protection is bypassed during testing. To prevent equipment damage, 

avoid cycling the compressor quickly.

CAUTION: ELECTRICAL HAZARD

Can cause electrical shock or equipment damage. Disconnect power before beginning 

installation.

REQUIRED: 24 VAC POWER (“C” WIRE) 

C-Wire Power Adapter Included to provide power if needed.

Removing your old thermostat

Check that your system is off 

Change the temperature on 

your old thermostat. If you don’t 

hear the system turn on within 5 

minutes, the power  

is off. 

Note: 

If you have a digital thermo-

stat that has a blank display, skip 

this step.

Turn power OFF 

To protect yourself and your 

equipment, Turn off the power 

at the breaker box or switch that 

controls your heating/cooling 

system.

Remove your old thermostat from 

the wall plate 

On most thermostats, you can take 

off the thermostat by grasping and 

gently pulling. Some thermostats 

may have screws, buttons, or 

clasps. 

Do not remove any wires from 

your thermostat at this time!

75

OFF

OFF

ON

OFF

OFF

ON

75

Breaker box

Switch

Take a picture of how your wiring 

looks right now 

Be sure to include the letters 

next to the terminals where the 

wires are inserted. This will be a 

helpful reference when wiring your 

thermostat.

Tip: 

If the color of your wires has 

faded or if 2 terminals have the 

same wire color, use the wire 

labels provided in the package to 

label each wire. 

Make sure there are no  

120/240V wires 

Do you have thick black wires 

with wire nuts?

  

Is your thermostat 120V or 

higher? 

If you answered yes to either of 

these questions, you have a line 

voltage system and the thermostat 

will not work. 
If you are unsure visit:  

honeywellhome.com/support

Remove any jumpers  

A jumper connects one terminal to 

another terminal. It may look like 

a small staple or even a colored 

wire and must be removed before 

continuing.

 

Use a screwdriver to 

release wires from terminals.

 

The thermostat does not  

need jumpers.

Y R RC

Example of  

a jumper

Wire nut

Thick black wire

Terminals

1/4” to 3/8”

Read and save these instructions.

Summary of Contents for RCHT8610WF

Page 1: ...fence technology it senses your return and helps make you comfortable upon arrival You can always manually change your preset Home and Away temperature either on the thermostat or on the Honeywell Home app 2 Smart scheduling Use a combination of geofencing and time scheduling to fit your busy active lifestyle 3 Time Based scheduling Program your thermostat for one week each day each day is a diffe...

Page 2: ...your old thermostat 2 Check that your system is off Change the temperature on your old thermostat If you don t hear the system turn on within 5 minutes the power is off Note If you have a digital thermo stat that has a blank display skip this step 1 Turn power OFF To protect yourself and your equipment Turn off the power at the breaker box or switch that controls your heating cooling system 3 Remo...

Page 3: ... mostat in step 13 Connect the other end of the unused wire to the C terminal on your heating cooling system or the zone panel if your home uses more than one thermostat to control temperature Be sure any other wire s connected to the C terminal stay securely connected when you re tighten the terminal Not all heating cooling equipment use the C label for the 24 VAC common wire If your heating cool...

Page 4: ...Rh or Rc into R terminal 2 Insert your Rc wire into Rc terminal 3 Insert your R or Rh wire into R Terminal 17 Turn your power ON Turn on the power at the breaker box or switch that controls the heating cooling system OFF ON ON OFF ON ON 90 o 16 Attach your thermostat Align the thermostat onto the UWP and firmly snap it into place 18 Return to the thermostat Return to the thermostat Confirm the scr...

Page 5: ...desired indoor temperature 4 Finish Setup Touch until you see Finish Setup Touch Select or touch text area Select No Yes Back No Yes Back 5 Setup Wi Fi At the end of setup process you will be prompted to SETUP WIFI If your Wi Fi is still not working you have to manually set the time and date Select No on the SETUP WIFI screen 6 Set time and date Set daylight saving time if you are in an area that ...

Page 6: ...ome screen In auto mode the thermostat can control either heating or cool ing to maintain the desired indoor temperature 303 Auto Differential 0 F to 5 F or 0 0 C to 2 5 C Differential is the minimum number of degrees rise or fall required during off cycle to switch from the last active mode heat or cool to the opposite mode when the thermostat is in auto changeover Differential is NOT deadband Th...

Page 7: ...tting Heating or cooling equipment will turn on earlier ensur ing the indoor temperature will match the setpoint at the scheduled time 429 Max Cool Temperature fromMin CoolTemp to99 Forto37 0 C 90 F or 32 C The user cannot set the cooling temperature above this level 430 Min Cool Temperature from 50 F or 10 0 C to Max Cool Temp 50 F or 10 C The user cannot set the cooling temperature below this le...

Page 8: ... s manual for additional information There is an alert that says Wi Fi Signal Lost What does that mean The Wi Fi signal to the thermostat has been lost Wait for the thermostat to reconnect or select a new network within the Honeywell Home app configuration menu If the thermostat is unable to reconnect you will need to troubleshoot the router to determine the cause Why is the thermostat showing up ...

Page 9: ...e T5 Smart supports Apple HomeKit When prompted by the Honeywell Home app scan the code on the back cover of the guide included with your T5 Smart thermostat 2 Year Limited Warranty For Warranty information go to honeywellhome com ...

Page 10: ...10 ...

Page 11: ...11 ...

Page 12: ...N 55422 www resideo com 33 00474 01 M S 4 19 Printed in United States 2019 Resideo Technologies Inc This product is manufactured by Resideo Technologies Inc Golden Valley MN 1 800 633 3991 The Honeywell Home trademark is used under license from Honeywell International Inc All rights reserved 33 00474 01 ...

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