C
K
Rc
R
W-
O/B
Y
G
W2-
Aux/E
Y2
L
W
Y
G
R
C
Quick Start Guide
Smart Color Touchscreen
Programmable
Thermostat
RTH9585WF
Search for local rebates: HoneywellHome.com/Rebates
Install your thermostat.
Connect your home Wi-Fi network.
Register online for remote access.
1
2
3
Welcome
Getting set up and ready is simple. Read before installing.
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.
1.1 Switch OFF power to your
heating/cooling system
1.1a Important! To protect your
equipment, switch OFF the
power to your heating/
cooling system at the
breaker box or the system
switch.
1.1b Confirm power is OFF.
Try to turn on heating/
cooling equipment by
changing temperature
on your old thermostat.
Your power is OFF if your
system does not turn ON.
Install your thermostat
1
Circuit
breaker
box
Heating/
cooling system
power switch
C
Terminal
designation
If you have an older thermostat with a
sealed mercury tube, see warning page
for proper disposal instructions.
1.2 Remove old thermostat
faceplate and leave wires
connected
1.2a Take a picture of the wire
connections for later
reference.
1.2b If no wire is connected to a
terminal labeled C or no C
terminal exists on the old
thermostat, view the
Alternate Wiring videos at
wifithermostat.com/videos
Important! C wire is required
and is the power source for your
thermostat. Without a C
wire, your thermostat will
not power up.
1.3 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 old thermostat
terminal designations, not by wire
color.
Note: If no tag matches a terminal
designation, write the appropriate
letter on a blank sticky tag.
Note: Wrap the wires around a pencil
to prevent them from falling back into
the wall.
1.4 Remove wallplate
Remove the old wallplate from
the wall after all wires are
labeled and disconnected.
Blank tags
Sticky tag
Terminal
designation
C
C
1.5 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.
LEVEL
HERE
C
K
Rc
R
W-
O/B
Y
G
W2-
Aux/E
Y2
L
G
C
R
Y
W
Wallplate
1.6 Connect wires
Important! C wire is required and
is the power source. Without a C wire,
your thermostat will not power up.
See the C Wire Addendum
document for more information.
View the Alternate Wiring videos
at wifithermostat.com/videos
1.6a Starting with the C Wire, match
the sticky tag on the wire to the
terminal labels.
1.6b Straighten wire and gently slide
into terminal hole until it clicks
into place. (If you need to
remove a wire, use a pen tip to
press the terminal release and
then pull the wire out.)
Note: Refer to the wiring picture
you took in Step 1.2.
Tip: To make it easier to slide the
wire into place, use a pen tip to
hold down the terminal release.
Note: The wiring for your
application might be different
than the wiring shown below.
Labels don’t match or have
heat pump system?
See User Guide.
Labels don’t match or have
heat pump system?
See User Guide.
1.7 Attach thermostat
to wallplate
Align the thermostat with
wallplate and snap into
place.
Before you begin
Thermostat
Wallplate
LEVEL
HERE
1.8 Switch heating/cooling
system ON
Important!
1.8a Verify that the C wire is
connected at the thermostat
and at the heating/cooling
system.
1.8b Make sure the heating/
cooling system door is
firmly secured.
1.8c Switch power back ON for
your heating/cooling system
at the breaker box or its
power switch.
Turn over
or
1.6c In the image on the right, check
the box next to each connection.
You will use this checklist in
Step 1.9.
1.6d Verify wire is firmly secured by
gently pulling on wire.
1.6e Repeat steps a–d for all other
wires.
1.6f Push any excess wire back into
the wall opening after all wires
are installed.
Note: The L terminal on the lower
right is used only for Heat Pump
systems.
Note: If the old thermostat for
Heat Pump System has separate
wires on Aux and E, use a wire nut
to attach both wires to a separate
wire. Slide this third wire into the
W2-Aux/E terminal.
Terminal release
Circuit
breaker
box
Heating/
cooling system
power switch
or
View the installation video
at wifithermostat.com/
support
You will also need:
• Small screw driver
• Pen
• Thermostat ID card
• Your home WiFi
network password
You will need your
camera to take a
picture of your old wire
connections.
Note: You will need a
picture of your wire
connections to wire
the new thermostat.
Remove jumper loop ONLY if
you have both R and Rc wires.
Important!
Check the box for each wire
you connect. You will need
this information in Step 1.9.
C
K
Rc
R
W-O/B
Y
G
W2-
Aux/E
Y2
L
EXAMPLE WIRING
Yours may look different
Resideo Inc., 1985 Douglas Drive North,
Golden Valley, MN 55422
33-00268—03 M.S. Rev. 05-19 | 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.
www.resideo.com
72
Electrical Ratings
Terminal Voltage (50/60Hz) Max. Current Rating
W-O/B 2030 Vac 1.0 A
W2 (Aux/E) 2030 Vac 1.0 A
Y Cooling 2030 Vac 1.0 A
Y2 Cooling 2030 Vac 1.0 A
G Fan 2030 Vac 0.5 A
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