Honeywell RTH7400 series User manual

RTH7400,
RTH7500 Series
Programmable Thermostat
Quick Installation Guide
Heat
Tools you will need Tools you may need
Wire stripper
Needle-nose pliers Drill and drill bit
(See step 11)
Included in your box
Screws and
anchors
UWP™
Mounting
System
(UWP)
RTH7400/RTH7500
Thermostat
Quick Install Guide
Small flat head scr
ewdriver
Phillips scr
ewdriver
Pencil
Level

2
Quick Installation Guide
Removing 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
thermostat 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 Remove the old thermostat’s
faceplate.
On most thermostats, you can take
off the faceplate 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
75
OFF
OFF
ON
OFF
OFF
ON
Breaker box
Switch
4 Make sure there are no
120 V/240 V wires.
Do you have thick black wires with
wire nuts?
Is your thermostat 120 V 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:
resideo.com
Wire nut
Thick black wire
Read and save these instructions

3
RTH7400/RTH7500 Series
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 RTH7400/RTH7500
thermostat does not need jumpers.
YRRC
Example of
a jumper
Terminal s
1/4” to 3/8”
7 Record if you have wires in the following terminals.
Do not include jumpers as a part of your count. The thermostat does not
need jumpers.
Terminal Wire Color
R
R h
Rc
8 Write down the color of the wires.
Check mark the wires that are connected to terminals. Next to the check mark,
write down the color of the wire. Do not include jumpers as a part of your
count.
Check all that apply (Not all will apply):
Terminal Wire Color
Y
Y2
G
C
Terminal Wire Color
A or L/A
O/B
W2 or AUX
E
W
K
The RTH7400/RTH7500 thermostat does not support L/A, S, or U terminals.
If there are wires in terminals that are not listed, you will need additional
wiring support. Visit resideo.com to find out if the thermostat will work for you.

4
Quick Installation Guide
9 Disconnect the wires and remove the old wall plate.
Use a screwdriver to release wires from terminals. Then, use a wire label to
identify each wire as it’s disconnected. The letter on the wire label should
match the letter on the terminal.
Tip: To prevent wires from falling back into the wall, wrap the wires around a
pencil.
Installing your RTH7400/RTH7500 thermostat
10 Bundle and insert wires through the UWP.
Pull open the UWP and insert the bundle of
wires through the back of the UWP.
Make sure at least 1/4-inch (6.3 mm) of
each wire is exposed for easy insertion into
the wire terminals.
RTH7400/RTH7500
Thermostat Screws UWP
Mounting
System Anchors Wall
www.honeywellhome.com

5
RTH7400/RTH7500 Series
11 Insert the wall anchors.
It is recommended that you use the
wall anchors included in the box to
mount your thermostat.
You can use the UWP to mark where
you want to place the wall anchors.
a) Level the wall plate.
b) Mark the location of the wall
anchors using a pencil.
c) Drill anchor holes. 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.
d) Insert wall anchors.
e) Make sure anchors are flush with
wall.
Insert wires into the inner holes of the terminals on the UWP. The tabs will
stay down once the wire is inserted.
If you have 1 R-wire (R,Rh, or Rc)
If you have 2 R-wires (R or Rh, and Rc)
or
1. Set R-switch
to the up
position.
1. Set R-switch
to the down
position.
2. Insert your
R-wire (R, Rh
or Rc) into
R-terminal.
2. Insert your Rc wire
into Rc-terminal.
3. Insert your R
or Rh wire into
RTerminal.
12 Set R-switch position and insert R-wire or wires.
Set the R-switch up or down based on your wiring notes in Step 7.

6
Quick Installation Guide
14 Mount the UWP and close the
door.
Mount the UWP using the provided
screws. Install all three screws for
a secure fit on your wall. Close the
door after you’re finished.
15 Confirm wiring matches snapshot.
Please confirm wiring matches
terminals from the photo you took in
Step 5.
Use 3x supplied screws
(#8 11/2” (38.1 mm)
for red anchors and
#6 11/2” (38.1 mm)
for yellow anchors)
1/4” to 3/8”
16 Install batteries.
Insert two AA alkaline batteries in the back of the thermostat as shown.
17 Attach your thermostat.
Align the thermostat onto the UWP
and firmly snap it into place.
13 Connect wires from Step 8.
Depress the tabs to put the
wires into the inner holes of their
corresponding terminals on the
UWP (one wire per terminal) until it is
firmly in place.
Gently tug on the wires to verify
they are secure.
Tip: If you need to release the wires
again, push down the terminal tabs
on the sides of the UWP.
This wiring is just an example,
yours may vary.

7
RTH7400/RTH7500 Series
18 Turn your power ON.
Turn on the power at the breaker box
or switch that controls the heating/
cooling system.
19 Set the date.
Press +or -to adjust the year. Press
Select.
Press +or -to adjust the month.
Press Select.
Press +or -to adjust the day. Press
Select.
20 Choose a clock format.
Press + or - set the clock format:
12 hour (standard for North
America) or 24 hour. Press Select.
21 Set the time.
Press +or -to adjust the hour. Press
Select.
Press +or -to adjust the minutes.
Press Select.
Back
OFF
ON
ON
OFF
ON
ON
Breaker box
Switch
Set date and time

8
Quick Installation Guide
NOTE: If this is not a new installation,
see page 14 for entering setup menu.
22 Select System Setup options.
Press +or -to change values or
select from available options. Then
press Select to save changes and
advance to the next System Setup
number.
See “System Setup options” below
for a full list of
System Setup
numbers and options .
Repeat until all of the System
Setup options have been set. The
thermostat will automatically save
and exit to the Home screen.
23 Continue to “System operation
settings” on page 10.
System Setup
Number Description Options (factory default in bold)
120 Scheduling Options
0 = Non-Programmable
1 = 1-Week Programmable
2 = 5-2 Programmable (RTH7560 only)
3 = 5-1-1 Programmable (RTH7460 only)
4 = 7-Day Programmable (RTH7560 only)
Note: You can change default MOFR, SASU schedule here. To edit
periods during days, temperature setpoints, or to turn Schedule On/Off,
touch MENU and go to SCHEDULE.
125 Temperature Indication Scale 0 = Fahrenheit
1 = Celsius
200 Heating System Type
1 = Conventional Forced Air Heat
2 = Heat Pump
3= Radiant Heat (Boiler)
5 = None (Cool Only)
Note: This option selects the basic system type your thermostat will
control.
205 Heating Equipment Type
Conventional Forced Air Heat:
1 = Standard Efficiency Gas Forced Air
2 = High Efficiency Gas Forced Air
3 = Oil Forced Air
4 = Electric Forced Air
5 = Hot Water Fan Coil
Heat Pump:
7 = Air to Air Heat Pump
Radiant Heat:
9 = Hot Water Radiant Heat
12 = Steam
Note: This option selects the equipment type your thermostat will
control. Note: This feature is NOT displayed if feature 200 is set to Cool
Only.
System Setup options

9
RTH7400/RTH7500 Series
Number Description Options (factory default in bold)
218 Reversing Valve O/B
0 = O (O/B in Cool)
1 = B (O/B in Heat)
Note: This option is only displayed if the Heat Pump configured. Select
whether reversing valve O/B should energize in cool or in heat.
220 Cool Stages / Compressor
Stages 200=Conv / 200=HP
0, 1, 2
Note: Select how many Cool or Compressor stages of your equipment
the thermostat will control. Maximum of 2 Cool/Compressor Stages. Set
value to 0 if you do not have Cool Stage/Compressor Stage.
221 Heat Stages / Backup Heat
Stages Heat Stages
Heat Stages: 1, 2
Backup Heat Stages: 0, 1
Note: Select how many Heat or Aux/E stages of your equipment the
thermostat will control. Maximum of 2 Heat Stages for conventional
systems. Maximum of 1 Aux/E stage for systems with more than 1
heating equipment type. Set value to 0 if you do not have Heat Stage/
Backup Heat Stage.
300 System Changeover
0 = Manual
1 = Automatic
Note: Thermostat can automatically control both heating and cooling
to maintain the desired indoor temperature. To be able to select
“automatic” system mode on thermostat home screen, turn this feature
ON. Turn OFF if you want to control heating or cooling manually.
425 Smart Response
0 = No
1 = Yes
Note: Smart Response is a comfort setting. Heat or Cooling equipment
will turn on earlier, ensuring the indoor temperature will match the
setpoint at the scheduled time. See page 15.
430 Minimum Cool Temperature
Setpoint (RTH7500 Only)
50 °F to 99 °F (50 °F)
10.0 °C to 37.0 °C (10.0 °C)
Note: The cool temperature cannot be set below this level.
431 Maximum Heat Temperature
Setpoint (RTH7500 Only)
40 °F to 90 °F (90 °F)
4.5 °C to 32.0 °C (32.0 °C)
Note: The heat temperature cannot be set above this level.
711 Air Filter 1 Replacement
Reminder
0 = Off
1 = 10 Run Time Days
2 = 20 Run Time Days
3 = 30 Run Time Days
4 = 45 Run Time Days
5 = 60 Run Time Days
6 = 90 Run Time Days
7 = 120 Run Time Days
8 = 150 Run Time Days
9 = 30 Calendar Days
10 = 45 Calendar Days
11 = 60 Calendar Days
12 = 75 Calendar Days
13 = 3 Calendar Months
14 = 4 Calendar Months
15 = 5 Calendar Months
16 = 6 Calendar Months
17 = 9 Calendar Months
18 = 12 Calendar Months
19 = 15 Calendar Months
Note: Set a reminder for when to change your air filter. Choose either
calendar or equipment run time-based reminder.
1415 Daylight saving time
0 = Off
1 = On
Note: Set to Off in areas that do not follow Daylight Saving Time.
NOTE: Once you have cycled through all of the System Setup numbers, Done is
displayed. Press Select to save and exit.

10
Quick Installation Guide
Fan operation settings
1 Press the Fan button to cycle to the
next available Fan mode.
2 Cycle through the modes until the
required Fan mode is displayed and
leave it to activate.
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.
‒Circ (RTH7500 Only):Fan
circulates randomly about 33% of
the time.
System operation settings
1 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 leave it to activate.
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 (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 or Circulate.
NOTE: Heat/Cool flash for 5 minutes
due to compressor protection.