Tools You Will Need; Removing Your Old Thermostat - Honeywell RCHT8610WF Product Data

Read and save these instructions.

Tools you will need

Phillips screwdriver
Small flat head screwdriver
Pencil
Level Home Wi-Fi
Password
You may need
Wire stripper
Needle-nose pliers
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.
REQUIRED: 24 VAC POWER ("C" WIRE)
C-Wire Power Adapter Included to provide power if needed.
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
Smartphone
To install your
thermostat and
photograph existing
wiring.
Honeywell Home app
To configure your
system and connect to
your smartphone.
Drill and
drill bit (7/32 in)

Removing your old thermostat

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.
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.
3 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!
4 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
5 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.
6 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.
2
ON
OFF
OFF
Switch
Breaker box
75
ON
OFF
75
Wire nut
Thick black wire
Y R RC
Terminals
Example of
a jumper