Lutron Electronics 33-00155EFS Installation Manual

Reference to key features

* Password is the date code.

Wireless Thermostat

Installation Guide

Current display. Underlined label
signifies the current display.

Mode control buttons. Use to change
settings for Fan or System Heat/Cool.

Menu. Select options to: set schedules,
view equipment status, change IAQ
settings, access installer options*, etc.

Current status. Shows system mode
(heat/cool), outdoor temperature and
humidity.

Current schedule. Shows desired
temperature and schedule status.

Indoor conditions. Shows indoor
temperature and humidity.

Current Time.

Alert Light. On when alert

message is active or system is set to
Em Heat.

1-855-733-5465

yourhome.honeywell.com

Honeywell

Golden

M35343A

NO MERCURY

ATTENTION: MERCURY RECYCLING NOTICE

This product does not contain mercury. However, this
product may replace a product that contains mercury.

Hg

Mercury and products containing mercury should not be
discarded in household trash.

For more information on how and where to properly recycle
a thermostat containing mercury in the United States,
please refer to the Thermostat Recycling Corporation at
www.thermostat-recycle.org.

For mercury thermostat recycling in Canada, please refer
to Switch the Stat at
www.switchthestat.ca

Getting started

Follow these basic steps to install this thermostat,
set installer options, and connect to the Wi-Fi
network.

NOTE: For the product specifications, please go
to www.lutron.com

Installing the thermostat

1 Separate wallplate from thermostat.

Press button on top and pull to remove
the wallplate.

RoHs Compliant
Conformité RoHs
Assembled in Mexico
Assemblé au Mexique

1524

Button

Thermostat (back view)

RoHs Compliant
Conformité RoHs
Assembled in Mexico
Assemblé au Mexique

1524

1

TH8321WF1001

Residential/Résidentiel

1-800-468-1502

http://yourhome.honeywell.com

Commercial/Commerciale

1-888-245-1051

http://customer.honeywell.com

Honeywell, Golden Valley, MN 55422

Password
(Date Code)

Valley, MN 55422

Thermostat

2

Wallplate
(back view)

CONVENTIONAL

CONVENTIONAL

2 Mount wallplate as shown.

Mount new wallplate using screws
and anchors included with the
thermostat.

Drill 3/16-in holes for drywall.
Drill 7/32-in holes for plaster.

3 Connect power.

24VAC power is required. Connect
common side of transformer to C
terminal.

Wallplate

S1

C
K
R
R
U1
U1
U2
U2

C

K

RC

R

U1

U1

U2

U2

HEAT PUMP

S1

S1

S1

C

W

O/B

Y

Y

G

G

AUX

W2

-E

Y2

Y2
L/A

A

S1

S1

S1

S1

O/B

W

Y

Y

G

G

AUX

W2

-E

Y2

Y2

A

L/A

4 Wire the thermostat.

Refer to the table and wiring
diagrams on the next page.

a Turn on 24VAC NOW.

24VAC (C wire) is required.

5 Mount thermostat on wallplate.

Align thermostat at bottom and
snap into place as shown.

3

C

K

RC

R

U1

U1

U2

U2

Thermostat

HEAT PUMP

S1

S1

S1

S1

O/B

W

Y

Y

G

G

AUX

W2

-E

Y2

Y2

A

L/A

Wallplate

Terminal Designations

SYSTEM

1

1

SYSTEM

TRANSFORMER

Conventional System Heat Pump

Terminal Description Terminal Description

Common wire from secondary side of

C

cooling transformer (if 2 transformers).

Rc* Cooling power. Rc Cooling power.

R* Heating power. R Heating power.
W Heat Stage 1 O/B Changeover valve for heat pumps.

W2 Heat Stage 2 AUX-E Backup Heat/Emergency Heat

Y Compressor Stage 1 Y Compressor Stage 1

Y2 Compressor Stage 2 Y2 Compressor Stage 2

G Fan Relay G Fan Relay

Connect to Economizer Module or

A

Lighting Panel (TOD).

U1 / U1

S1 / S1

Universal relay for humidification,
dehumidification, ventilation, or a stage of
heating/cooling.

Universal input for a wired indoor, outdoor
or discharge sensor.

U1 / U1

S1 / S1

K** Connect to K on Wire Saver module. K** Connect to K on Wire Saver module.

Common wire from secondary side of

C

cooling transformer.

Connect to Compressor Monitor, Zone

L/A

Panel, Economizer Module or Lighting
Panel (TOD).

Universal relay for humidification,
dehumidification, ventilation, or a stage of
heating/cooling.

Universal input for a wired indoor, outdoor
or discharge sensor.

* Remove factory installed jumper for two transformer systems.
** The THP9045A1023 Wire Saver module is used on heat/cool systems when you only have four wires at the thermostat and you

need a fifth wire for a common wire. Use the K terminal in place of the Y and G terminals on conventional or heat pump systems to
provide control of the fan and the compressor through a single wire—the unused wire then becomes your common wire. See THP9045
instructions for more information.

TRANSFORMER

C

THERMOSTAT

C

K

R

C

R

U1

U1

OR

POWERED

HUMIDIFIER,

DEHUMIDIFIER

OR VENTILATOR

THERMOSTAT

C

K

C

R

R

1

U1

U1

Wire the thermostat universal relay to the low speed fan
for dehumidication control at the equipment. The
thermostat relay can be set to normally open or
normally closed in the thermostat installer setup.

R

FIELD INSTALL JUMPER
BETWEEN R AND U1

DEHUMIDIFICATION

WITH LOW SPEED FAN

24

VAC

HUM, DEHUM OR

VENT TRANSFORM-

ER

24

VAC

C

24

VAC

R

120
VAC

120
VAC

120
VAC

Normally open, dry contacts

Normally closed, dry contacts

NON-POWERED HUMIDIFIER, DEHUMIDIFIER OR VENTILATORPOWERED HUMIDIFIER, DEHUMIDIFIER OR VENTILATOR

THERMOSTAT

C

K

R

C

FIELD INSTALL JUMPER

R

BETWEEN R AND U1

U1

NON-POWERED

U1

CONNECTING A HEAT OR COOL STAGE TO U1DEHUMIDIFICATION WITH LOW SPEED FAN

THERMOSTAT

1

2

HUMIDIFIER,

DEHUMIDIFIER

OR VENTILATOR

C

K

R

C

R

2

U1

U1

U1 terminals are normally open dry contacts when set
up for a stage of heating or cooling.

You must install a eld jumper if the stage of heating

or cooling is powered by system transformer. Do NOT

install a eld jumper if the stage of heating has its own

transformer.

HEAT STAGE 3, COOL

STAGE 3, BACKUP HEAT

STAGE 2 FOR HEAT

PUMPS, OR GEOTHERMAL

RADIANT HEAT

C

R

TRANSFORMER

C

24

VAC

R

SYSTEM

TRANSFORMER

24

VAC

120
VAC

VAC

120

4

Performing installer setup

Setup options define the type of system you are installing and preferences for the
display.

1 Follow prompts on the screen to select the appropriate options. Among the

screens you might see will be options for:

1.1 Application, either Residential or
Commercial.

1.2 Thermostat Name, which will enable
you to identify it if you’re installing
more than one thermostat (for a zoned
HVAC application, for instance).

1.3 Thermostat Type, either programmable
or not, depending on preference.

1.4 Temperature scale, either Fahrenheit
or Celsius.

1.5 Use outdoor temp.

NOTE: Choose WIRED/INTERNET if your
application will require a wired sensor, or
will use the Internet for weather data.

1.6 The type of heating system.

1.7 For all installer options, press the s or
t buttons to change the option.

1.8 Press Next to move to the next setting,
and Done when setup is complete.

APPLICATION

residential

THERMOSTAT NAME

THERMOSTAT

THERMOSTAT TYPE

programmable

TEMPERATURE SCALE

fahrenheit

USE OUTDOOR TEMP

wired / internet

HEATING SYSTEM

conv. forced air

5

Wiring

1H/1C System (1 transformer)

Rc Power [1]
R [R+Rc joined by jumper]
W Heat relay
Y Compressor contactor
G Fan relay
C 24VAC common
S1 Optional outdoor/remote sensor

Heat Only System
Rc Power [1]

R [R+Rc joined by jumper]
W Heat relay
C 24VAC common
S1 Optional outdoor/remote sensor

Heat Only System (Series 20)
Rc [R+Rc joined by jumper]

R Series 20 valve terminal “R” [1]
W Series 20 valve terminal “B”
Y Series 20 valve terminal “W”
C 24VAC common
S1 Optional outdoor/remote sensor

2H/2C System (1 transformer)
Y2 Cool relay 2

W2 Heat relay 2
Rc Power [1]
R [R+Rc joined by jumper]
W Heat relay 1
Y Cool relay 1
G Fan relay
C 24VAC common
S1 Optional outdoor/remote sensor

1H/1C System (2 transformers)
Rc Power (cooling transformer) [1, 2]

R Power (heating transformer) [1, 2]
W Heat relay
Y Compressor contactor
G Fan relay
C 24VAC common [3]
S1 Optional outdoor/remote sensor

Heat Only System With Fan
Rc Power [1]

R [R+Rc joined by jumper]
W Heat relay
G Fan relay
C 24VAC common
S1 Optional outdoor/remote sensor

Cool Only System
Rc Power [1]

R [R+Rc joined by jumper]
Y Compressor contactor
G Fan relay
C 24VAC common
S1 Optional outdoor/remote sensor

2H/2C System (2 transformers)
Y2 Cool relay 2

W2 Heat relay 2
Rc Power (cooling transformer) [1, 2]
R Power (heating transformer) [1, 2]
W Heat relay 1
Y Cool relay 1
G Fan relay
C 24VAC common [3]
S1 Optional outdoor/remote sensor

See [notes] below

[1] Power supply. Provide disconnect means and overload protection as required.
[2] Remove jumper for 2-transformer systems.
[3] Common connection must come from cooling transformer if a 2 transformer installation.

6

Wiring

1H/1C Heat Pump (no auxiliary heat)
Rc Power [1]

R [R+Rc joined by jumper]
O/B Changeover valve [4]
Y Compressor relay
G Fan relay
C 24VAC common
S1 Optional outdoor/remote sensor

2H/1C Heat Pump (with auxiliary heat)
L Equipment monitor [5]

Aux/E Auxiliary/Emergency heat relay (Heat 2)
Rc Power [1]
R [R+Rc joined by jumper]
O/B Changeover valve [4]
Y Compressor relay
G Fan relay
C 24VAC common
S1 Optional outdoor/remote sensor

2H/2C Heat Pump (no auxiliary heat)

Y2 Compressor 2 relay
Rc Power [1]
R [R+Rc joined by jumper]
O/B Changeover valve [4]
Y Compressor 1 relay
G Fan relay
C 24VAC common
S1 Optional outdoor/remote sensor

3H/2C Heat Pump (with auxiliary heat)
Y2 Compressor 2 relay

L Equipment monitor [5]
Aux/E Auxiliary/Emergency heat relay (Heat 2)
Rc Power [1]
R [R+Rc joined by jumper]
O/B Changeover valve [4]
Y Compressor 1 relay
G Fan relay
C 24VAC common
S1 Optional outdoor/remote sensor

See [notes] below

[1] Power supply. Provide disconnect means and overload protection as required.
[4] O/B set to control as either O or B in installer setup.
[5] Heat pump reset (powered continuously when thermostat is set to Em. Heat; system monitor when

set to Heat, Cool, or Off).

7

Connecting to Wi-Fi

After installer setup, you will be prompted to connect to a Wi-Fi network.

NOTE: If you select No, the homeowner
can connect to the Wi-Fi network later. (See
“Connecting to Wi-Fi later” on page 10
or in the User’s Guide.) The thermostat will
display its Home screen and thermostat
setup is complete.

Connect to a

Wi-Fi network now?

1 Connect to the Wi-Fi network now.

1.1 Press Yes.

The thermostat will scan for available
Wi-Fi networks.

1.2 Use the arrow buttons to scroll up/

down or left/right. Press the Wi-Fi
network name, then press Select.

NOTE: If the Wi-Fi network name is hidden,
see “Connecting to a hidden Wi-Fi network”
on page 12.

1.3 When prompted, press the screen to

edit the password (if necessary).

1.4 Enter the password.

Press the s or t buttons to change
the letter or number.
Press the button to move to the next
character, or the button to move to
the previous character.
Use the s or t buttons at the bottom
to change letter case.
Press Done when complete.

1.5 The screen will let you know when the

connection is successful. Press Done
when the connection is successful.
If the connection is not successful,
the screen will explain why not. See
“Unsuccessful connection” on page

11. Follow instructions on the screen
to try again.

NOTE: Press the Help button for more
information about an unsuccessful connection.

Finding Networks

Please Wait

Select Wi-Fi Network

Your Network

Enter Password

Press Here to Edit

Delete Space
AC

Connection

Successful

8

1-855-733-5465

yourhome.honeywell.com

Honeywell

Golden

M35343A

2 The homeowner must have a Total Connect Comfort account.

2.1 Have the homeowner go to

mytotalconnectcomfort.com and follow
the instructions to login or create an

Register at:
Honeywell.com/TCC

account.

2.2 Press the t button to display MAC

and CRC.

2.3 Note the Thermostat MAC and CRC; they will be needed during registration.

Or, refer to the User’s Guide.

Finding the password (Date Code)

• To make changes to Installer Setup

• To perform an Installer Test

Finding the password

You can find the date code
on the back of the thermostat,
or touch Menu, select Dealer Information,
and scroll to the bottom to see Date Code.

1 Touch Menu.

2 Select Dealer Information.

3 Scroll down to see the Date Code.

RoHs Compliant
Conformité RoHs
Assembled in Mexico
Assemblé au Mexique

1524

Thermostat (back view)

Valley, MN 55422

Dealer Information

Installer Options

TH8321WF1001
Date Code: 1524

RoHs Compliant
Conformité RoHs
Assembled in Mexico
Assemblé au Mexique

1524

1

TH8321WF1001

Residential/Résidentiel

1-800-468-1502

http://yourhome.honeywell.com

Commercial/Commerciale

1-888-245-1051

http://customer.honeywell.com

Honeywell, Golden Valley, MN 55422

Password
(Date Code)

9

Making changes to Installer Setup and performing an Installer Test

1 Touch Menu.

Installer Options

2 Select Installer Options.

3 Enter password (date code) and

touch Done. See “Finding the password” on
page 9 to find the date code.

4 Select Installer Setup or Installer Test.
5 Follow prompts on the screen to select

the desired setup options or to perform an
equipment test.

Checking signal strength

After you successfully connect to the Wi-Fi
network (see “Connecting to Wi-Fi” step 1.5),
the thermostat will display signal strength. The
signal strength symbols have the following
meanings:

Signal strength is 75%–100%

Signal strength is 50%–75%
Signal strength is 0%–50%

Enter password

0 0 0 0

Installer Setup

Installer Test

Wi-Fi Network:
YourNetwork

You can also check signal strength at any time after the thermostat is connected to the
Wi-Fi network by pressing MENU then Wi-Fi Setup.

Connecting to Wi-Fi later

1 Press MENU, then Wi-Fi Setup.
2 Follow the prompts on-screen (and in

“Connecting to Wi-Fi”) to select the Wi-Fi
network and enter the password.

NOTE: To view and set the Wi-Fi thermostat
remotely, the homeowner must have a Total
Connect Comfort account. See “Connecting to
Wi-Fi” step 2.

10

DoaIol Inrol Madorl

Wi-Fi Setup

Installer Options

Unsuccessful connection

If you are unsuccessful in connecting the thermostat to the Wi-Fi network, you will
see a Connection Failed screen. Press the t button for other tips about this failed
connection. Here are three specific reasons the connection might be unsuccessful.

For all Connection Failed screens, pressing Done will return to the Menu screen.

Invalid Password

The password you entered is invalid. Check that you have the right password and try
again.

Press Done to return to “Connecting to Wi-Fi” step 1.3 on page 8.

No IP Address

The thermostat was unable to obtain an IP address from the router. Verify the router is
correctly set up to automatically assign IP addresses. This connection can take several
minutes. If there is still no connection, remove the thermostat from the wallplate for 10
seconds, then snap it back into place.

No Internet Link

The thermostat connected to the Wi-Fi network but was unable to establish a
connection to the internet. Check the router settings and try again. Make sure the
Ethernet cable is plugged into the router and try rebooting the router if necessary.

11

Connecting to a hidden Wi-Fi network

If the Wi-Fi network name is hidden and it doesn’t show up in the list in “Connecting to
Wi-Fi” follow these steps to connect to it.

1 Press MENU, then Wi-Fi Setup.

DoaIol Inrol Madorl

Wi-Fi Setup

Installer Options

2 Press Other, then press Select.

3 When prompted, press the screen to edit the

network name.

4 Enter the network name.

Press the s or t buttons to change the letter
or number.
Press the button to move to the next
character, or the button to move to the
previous character.
Use the s or t buttons at the bottom to
change letter case.
Press Done when complete.

5 Select the appropriate network security setting,

then press Select.

6 Enter the Wi-Fi network password as shown in

“Connecting to Wi-Fi” step 1.4.

WirelessNetwork

Other...

Enter Network Name

Press Here to Edit

Delete Space
AC

SSID Security

Open Network

12

Specifications and replacement parts

Operating Ambient Temperature

Thermostat: 32 to 120° F (0 to 48.9° C)

Operating Relative Humidity

Thermostat: 5% to 90% (non-condensing)

Physical Dimensions (height, width, depth)

Thermostat: 4-15/16 x 4-5/8 x 1-1/8 inches (126 mm x 118 mm x 29 mm)

Wi-Fi Communication

Supports 802.11 B/G/N home wireless router
Frequency: 2.4 Ghz

Electrical ratings

Terminal Voltage (50/60 Hz) Max. Current Rating

W - OB 18 to 30 VAC and 750 mVDC 1.00A
Y (cooling) 18 to 30 VAC 1.00A
G (fan) 18 to 30 VAC 0.50A
W2 - Aux (heating) 18 to 30 VAC 0.60A
Y2 (cooling) 18 to 30 VAC 0.60A
A-L/A (output) 18 to 30 VAC 1.00A
U1/U1 30 VAC max. 0.50A

Power Consumption:

Operating voltage: 24 V~
Backlight on: 2.35 VA
Backlight off: 1.40 VA

Accessories and replacement parts

Accessories / Replacement Parts Honeywell Part Number

Cover Plate (covers marks left by old thermostats) THP2400A1019
Wire Saver Module THP9045A1023

13