Honeywell Home Smart Series User manual

User Guide
Read and save these
instructions.
RTH6500WF
Smart Series
Programmable
Thermostat
HOLD
M37771
In the box you will find
•Thermostat
•Wallplate (attached to
thermostat)
•Screws and anchors
•Quick Start Guide
•Thermostat ID Card
•Wire labels
•User Guide
•Quick Reference Card

This thermostat works with common 24 volt systems such as forced air, hydronic, heat pump, oil, gas, and
electric. It will not work with millivolt systems, such as a gas fireplace, or with 120/240 volt systems such
as baseboard electric heat.
MERCURY NOTICE: Do not place your old thermostat in the trash if it contains mercury in a sealed
tube. Contact the Thermostat Recycling Corporation for information on how and where to properly and
safely dispose of your old thermostat.
NOTICE:To avoid possible compressor damage, do not run air conditioner if the outside temperature drops
below 50°F (10°C).
Welcome
Congratulations on your purchase of a Smart
programmable thermostat. When registered
to Total Connect Comfort, you can remotely
monitor and control the heating and cooling
system in your home or business—you can
stay connected to your comfort system
wherever you go.
Total Connect Comfort is the perfect solution
if you travel frequently, own a vacation
home, a business or manage an Investment
property or if you are simply looking for peace
of mind.

About your new thermostat
Controls and Home screen
quick reference
Preset energy-saving schedules
Installation
Installing your thermostat
Connecting to your WiFi network
Operation
Setting the clock
Setting the fan
Selecting system mode
Adjusting program schedules
Overriding schedules temporarily
Overriding schedules permanently
Unregistering thermostat
Disconnecting WiFi
Special features
Setting functions and options
Appendices
Frequently asked questions
Troubleshooting
Table of contents
Features of your thermostat
With your new thermostat, you can:
•Connect to the Internet to monitor and control your heating/cooling system
•View and change your heating/cooling system settings
•View and set temperature and schedules
•Receive alerts via email and get automatic upgrades
Your new thermostat provides:
•Smart Response Technology
•Compressor protection
•Heat/cool auto changeover

Controls and home screen quick reference
Once your thermostat is installed, it will display the home screen. Portions of this
display will change depending on how you are viewing it.
The screen lights when you press any button. It stays lit for 8 seconds after you
complete changes.
M31586
HOLD
Set up messages
describe steps in the
WiFi set up process
WiFi status
Set clock, day,
or schedule
Select fan
settings
Additional
settings
Temperature
adjustment buttons
Permanent override
button
Select system
mode
Preset energy-saving schedules
This thermostat is pre-set with energy-saving program settings for four time periods.
Using the default settings can reduce your heating/cooling expenses if used as
directed. Savings may vary depending on geographic region and usage. To change the
settings, see pages 15.
Default Heat Settings Default Cool Settings
WAKE
6:00 am 70 °78 °
LEAVE
8:00 am 62 °85 °
RETURN
6:00 pm 70 °78 °
SLEEP
10:00 pm 62 °82 °

Setting up your thermostat
Setting up your programmable thermostat is easy. It is preprogrammed and ready to go
as soon as it is installed and registered.
Install your thermostat.
Connect your home WiFi network.
Register online for remote access.
Before you begin, you may want to watch a brief installation video.
Use the QR Code®at the front of this guide.
2
3
1
Installing your thermostat
You might need the following tools to install this thermostat:
•No. 2 Phillips screwdriver
•Small pocket screwdriver
•Pencil
•Level (optional)
•Drill and bits (3/16” for drywall,
7/32” for plaster) (optional)
•Hammer (optional)
•Electrical tape (optional)
1 Switch OFF power to your
heating/cooling system.
Important! To protect your
equipment, switch OFF the power to
your heating/cooling system at the
breaker box or the system switch.
or
M31535
Circuit breaker
box
Heating/cooling
system power
switch

C
C
MCR33823
If you have an older thermostat with
a sealed mercury tube, turn to page
ii for proper disposal instructions.
Terminal
designation
Installing your thermostat
2 Remove old thermostat faceplate
and leave wires connected.
2a Take a picture of the wire
connections for later reference.
2b If no wire is connected to a
terminal labeled C or no C terminal
exists on the old thermostat, view
the Alternate Wiring videos
Important! C wire is required and
is the primary power source for your
thermostat. Without a C wire, your
thermostat will not power up.
3 Label wires.
Do not label by wire color. Use
the supplied sticky tags to label
each wire as you disconnect it.
Label wires according to the old
thermostat terminal designations,
not by wire color.
Note: If no tag matches a wire
terminal label, write the terminal
label on a blank tag.
4 Remove wallplate.
Remove the old wallplate from
the wall after all wires have been
labeled and disconnected.
Blank sticky
tags
Sticky tags
Terminal
designation
C
C
MCR31537
5 Separate thermostat and its
wallplate.
On your new thermostat, grasp the
finger holds on the top and bottom
of the wallplate with one hand and
the thermostat (front) with the other
hand. Pull pieces apart.
Thermostat
Wallplate (back view)
Finger holds
M33856
PULL HERE
TO REMOVE
PULL HERE
TO REMOVE

Installing your thermostat
6 Mount wallplate for thermostat.
Mount your new wallplate using screws and
anchors included with the thermostat.
If necessary:
Drill 3/16-in holes for drywall.
Drill 7/32-in holes for plaster.
Note: You may be able to use your existing
wall anchors. Hold the wallplate up to the
existing anchors to check for alignment.
Wallplate
Important! The thermostat requires a C wire to operate. The C, or common, wire
brings 24 VAC power to the thermostat. Many older mechanical or battery operated
thermostats do not require a C wire. If you don’t have a C wire, try:
• Looking for an unused wire that is pushed into the wall. Connect that wire to C and
check that it is connected to the 24 VAC common at your heating/cooling system.
Note: Not all heating/cooling systems label the 24 VAC common C. Check your system
manual or contact the manufacturer to find out which terminal is the 24 VAC common.
View the Alternate Wiring videos
Wiring
For conventional heating/cooling systems (natural gas, oil or electric furnace, air
conditioner), see page 5. See “Glossary” on page 23 for further definition.
For a heat pump system, see page 7. See “Glossary” on page 23 for further
definition.
MCR33857
Wiring (conventional system)
7A Wire the thermostat to your conventional system.
a Starting with the C Wire, match the sticky tag on
the wire to the terminal labels.
You must have a C wire.
bLoosen screw, insert wire on inside edge
of terminal, then tighten screw.
cVerify wire is firmly secured by gently
pulling on wire.
dRepeat steps a–c for all other wires.
ePush any excess wire back into the wall
opening after all wires are installed.
fContinue to page 8.
Labels don’t match? See alternate
wiring key on pages 6.
W2 GWYR RCK Y2 C
MCR33878
Y
HEAT PUMP
CONVENTIONAL
AUX/EGO/B YRRCK LC
C
G
W
R
Remove metal jumper
only if you have both R
and RC wires
Note: The wiring for your
application might be different
from the wiring shown above.

Installing your thermostat
Wiring (heat pump system only)
7B Wire thermostat to your heat pump.
a Starting with the C Wire, match the sticky tag on the wire to the terminal
labels.
You must have a C wire.
bLoosen screw, insert wire on inside edge
of terminal, then tighten screw.
cVerify wire is firmly secured by gently
pulling on wire.
dRepeat steps a–c for all other wires.
ePush any excess wire back into the wall
opening after all wires are installed.
f Continue to page 8.
Note: If old thermostat has separate wires on AUX and
E, place both wires into the E/AUX terminal.
If old thermostat has wire on AUX with a jumper to E,
place wire on E/AUX terminal. No jumper is required.
Labels don’t match? See alternate
wiring key on pages 7.
MCR33877
G
O
Y
R
HEAT PUMP
AUX/EGO/B YRRCK LC
Aux
Note: The wiring for your
application might be
different from the wiring
shown above.
Alternate wiring (conventional system)
Use this if your wire labels don’t match the terminal labels.
Note: You must have
a C wire or equivalent.
Do not use Kterminal. For future use.
If your old thermostat had both Rand RH wires, remove metal jumper.
Connect the Rwire to the RC terminal, and the RH wire to the Rterminal.
Remove metal jumper connecting Rand RC only if you must connect both
Rand RC.
Alternate wiring key (conventional system)
2
3
1
Y2
R
4M
V
RHY1
H
W1F
RYWG
RC
W2
W2 GWYRRC
Y2 C
MCR33885
CONVENTIONAL
C
B
C1
X
K
1
2
3

Installing your thermostat
Alternate wiring (heat pump system only)
Use this if your wire labels don’t match the terminal labels.
Note: You must have
a C wire or equivalent.
See page 6.
Alternate wiring key (heat pump system only)
Do not use Kterminal. For future use.
If old thermostat has separate wires on AUX and E, place both wires into the E/AUX terminal.
If old thermostat has wire on AUX with a jumper to E, place wire on E/AUX terminal. No
jumper is required.
If your old thermostat had an Owire and not a Bwire, attach the Owire to the O/B terminal.
If your old thermostat had separate Oand Bwires, attach the Bwire to the Cterminal. If
another wire is attached to the Cterminal, check honeywellhome for help. Attach the Owire
to the O/B terminal.
If your old thermostat had separate Y1, W1 and W2 wires, check honeywellhome for help.
If your old thermostat had both Vand VR wires, check honeywellhome for help.
Leave metal jumper between Rand RC terminals in place.
2
3
1
4
5
6
7
MCR33886
E AUX
XW FH
B
W1
W2
X2
LOG
F
C
R
VRM
VY1
B
X
RY
RC
HEAT PUMP
AUX/EGO/B YRRCK LC
1
2
3
4
7
6
5
4

Installing your thermostat
8 Insert quick reference card.
Fold quick reference card
along score lines, and slide
it into the slot on the back of
the thermostat.
9Attach thermostat to wallplate.
Align the thermostat to the
wallplate and then snap into
place.
Back of thermostat
Quick
reference
card
MCR33916
M33860
HOLD
MCR33858
10 Switch heating/cooling system
ON.
Important!
10a Verify that the C wire is
connected at the thermostat
and at the heating/cooling
system.
10b Make sure the heating/
cooling system door is
firmly secured.
10c Switch power back ON
for your heating/cooling
system at the breaker box or
its power switch.
M31544
or
Circuit
breaker box
Heating/
cooling
system power
switch