Bosch BCC100 Assembly instructions

Bosch
Connected
Control
BCC100 Wi-Fi Thermostat
Installation Guide and User Manual
BoschHeatingAndCooling.com
GET THE MOST
OUT OF YOUR NEW
THERMOSTAT
Download The Bosch
Connected Control App
SEE PAGE 39
FOR MORE INFO

2
Compatibility
Thermostat Installation
Initial Setup
Advanced Settings
Troubleshooting
Wiring Diagrams
4
6
11
20
23
25
Table of Contents
Thermostat Main Screen
Icons
Temperature Setpoints
Installation Guide BCC100 Device User Manual
31
32
34
BCC App User Manual
Additional Features
BCC App
App Main Screen Overview
Setpoint(s) on the App
Schedule Overview
Alexa
Google Assistant
Warranty & Legal
35
35
36
37
Thermostat Overview
Unit Operating Mode
Fan
Accessory
Additional Information
39
40
41
42
44
44
44
App Menu Overview
Mode
Device Messages
Temperature
46
48
50
2

3
The Bosch Connected Control BCC100 Thermostat is compatible with the majority of 24V heating and cooling equipment
to help you save energy and money. Easily control your home's temperature from the full color 5” touchscreen display,
the Bosch Connected Control smartphone app or your voice with the Bosch Connected Control Alexa Smart Home
Skill and your Alexa-enabled smart devices or with Google Assistant.
Connectivity
Connect to your HVAC equipment from anywhere
Programmable
Follows preset or user-defined schedules
Compatibility
Compatible with majority of HVAC systems
(requires C-wire)
Enabled Smart Devices Compatible
Works with Google Assistant or Amazon Alexa
HVAC Filter Reminder
Get alerts when its time to replace your system's filter
Meet the Bosch Connected Control (BCC100 Thermostat)
Weather
Access your local forecast from your thermostat
5” Full-Color Touch Screen
Large screen for ease-of-use and offline access

4
Compatibility
u A C-wire (common wire) is required to power the unit
Two wire systems are not supported. If a C-wire is not
readily available, we recommend you seek professional
support from your local contractor.
u The Bosch Connected Control BCC100 Wi-Fi Thermostat
works with most 24V systems, including gas, oil, propane,
electric, forced air, variable speed, heat pump and radiant.
u For conventional (gas/oil/electric): Heat Only, Cool
Only,and Combined Heat & Cool. For heat-pump systems:
Up To 4-Heat & 2-Cool. The BCC100 is not compatible with
other Bosch Boiler controls, such as the Logamatic.
The thermostat cannot support
u Line voltage thermostats
u Electric baseboard heaters
u Proprietary communicating thermostats
u Millivolt systems
u Remote sensors Are you unsure of your system compatibility
or how to install your thermostat and need help?
u Self-support videos can be found on our website at:
Bosch-thermotechnology.us/bcc100
u Contact our support team at 1-800-283-3787
Professional installation is recommended
for the following systems
u Dual Fuel systems (Heat Pump combined with a Furnace)
u Whole-home humidifiers and dehumidifiers

5
Included in the box
u BCC100 Wi-Fi Thermostat
u Screws (2) and Anchors (2)
u Flathead Screwdriver
u Wire Labels
u Jumper Wire
u User Guide
u Customer Support Card
Tools you will need
u Medium Phillips screwdriver
(for attaching the Wall Plate to the wall)
u Smartphone
(for taking pictures of the existing wiring)
u Bosch Connected Control smartphone app
(for configuring the thermostat settings and
registering your device)
Tools you may need
u Needle-Nose Pliers (for pulling wires from the wall)
u Drill with 7/32” Drill Bit (for mounting wall anchors)
u Wire Stripper (for cutting and stripping wires)
u Multimeter (for testing circuit power and continuity)
u Pen or Pencil (for preventing wires from falling into the wall)
Installation Overview
Once you have everything you need, let’s get started!

6
Thermostat Installation
Turn OFF power
Turn off all power to your
HVAC (Heating, Ventilation,
and Air Conditioning) system
by using the master
equipment switch or
circuit breaker box.
Confirm that your system is off
One way to do this is to try to adjust the temperature on
your old thermostat. If you don’t hear the system turn on
within 5 minutes, air does not come out from the vents
or the old thermostat does not even power on, then you
have successfully turned off the power to your system.
Step 1 Step 2
Make sure your
old thermostat
Does Not Contain
Line Voltage Wiring
If you see any of these wire nuts,
unfortunately the BCC100 may not
work with your system. If you are
unsure or would like to discuss your
options, please contact a professional
or our support line: 1-800-283-3787.
Step 3
WARNING: Failure to turn off the power may
result in electrical shock and/or damage to the
equipment.
Remove the old thermostat from the
old wall plate
ON OFF
Y2 W2 G W C Y R RC
EL AUX G OB C Y R RC
OLD WALL PLATE
OLD THERMOSTAT

7
Take a picture of the existing wiring
Make sure that you can clearly read the terminal labels and
see which wires are connected to which terminals from your
photo. You will need to reference this
photo later during the initial setup.
Note: You can also use the wire labels
we have provided you to correctly
label each wire based on the terminal
where it is connected.
Step 4
Y2 W2 G W C Y R RC
EL AUX G OB C Y R RC
Confirm you have a C-wire connected
to your old thermostat wall plate
If you do not have a C-wire connected to your old
thermostat, please contact a professional or our support
line for further assistance to determine if the BCC100
Thermostat is compatible with your system.
Step 5
Y2 W2 G W C Y R RC
EL AUX G OB C Y R RC
Y2 W2 G W C Y R RC
EL AUX G OB C Y R RC
Disconnect the wires from the old thermostat and
remove the wall plate using a screwdriver
Some thermostats will also require you to use a screwdriver to
disconnect the wires. After the wires are disconnected and
the wall plate removed, we recommend wrapping a pen or
pencil around the wires to prevent them from falling back into
the wall.
Step 6
Step 7
Pull thermostat wires through the hole in the center
of the BCC100 wall plate and mark the location of
the mounting screws
It is recommended to use the BCC100 Wall Plate as a reference
guide to mark the mounting holes and ensure that
all holes and unpainted
surfaces are covered.

8
Drill and insert wall anchors (if necessary)
Drill two 7/32” holes where you marked the location of the
mounting screws and then insert the wall anchors provided
into these mounting holes.
Check if the wall plate is level and insert screws
Make sure your new BCC100 wall plate is level and insert the
included screws from the package. Mount your new wall plate
to the wall using a Phillips head screw driver.
Step 8 Insert each wire into the corresponding
terminal and close each terminal using a
flat head screw driver
Use the image you took with your
smartphone of your old thermostat wiring
or the wire labels as a reference for where
to place each wire. Be sure that you insert
each wire, one by one, and then
immediately close the terminal and confirm
that the wire is secure inside the terminal
before moving to the next wire. Repeat this
process for each wire to be installed. If you
are unsure of the terminal names on the
BCC100 Wall Plate, refer to BCC100
Terminal Key on the next page.
Step 9
SMALL
FLAT HEAD
SCREWDRIVER
NEEDED
PHILLIPS HEAD
SCREWDRIVER NEEDED
Thermostat Installation
LEVEL

9
R/RC
BCC100 Terminal
After all wires are securely connected,
gently push any excess wires back into
the hole in the wall
Step 10
Attach the BCC100 thermostat to
the BCC100 wall plate
Step 11
PUSH
HOOK
CLICK
BCC100 Terminal Key
Alarm Input3
C-wire (common)
1st Stage Heating1
1st Stage Compressor
Heating Appliance Power
Thermostat Power/
Cooling Appliance Power
Not Used
Fan
(W2) 2nd Stage Heating2
2nd Stage Compressor
2nd Stage Heating
Humidifier/Dehumidifier
Reversing Valve
R/RC
Note: The color of your wires may not be the same as shown
(1)Emergency Heat activated at W/E,
(2)Single-stage Auxiliary heat activated at W2/AUX,
(3)Only to be used with Bosch WSHP
Data
W2
AUX

10
Step 12 Step 13
Turn ON the power to
your HVAC by using the
master equipment switch
or circuit breaker box
The thermostat will power on
and display a Bosch logo and
loading bar.
Note: After loading completes,
the thermostat will display the
following screen:
ON OFF Great job, the hard part’s over!
Next, get your smartphone and visit your app
store. Download the Bosch Connected Control app
to setup your new BCC100
Your BCC100 Thermostat is not yet configured to your home’s
HVAC system. Go to the Apple App Store or Google Play Store
to download the app, create an account, and finish configuring
your system.
Three ways to download the
Connected Control App:
u In the Apple App Store or Google
Play, search “Bosch Connected
Control” or “BCC100” and then
download the app.
u Visit Bosch-thermotechnology.
us/BCC100
u Scan QR code below.
Click the links for the app in
the Download App section.
Thermostat Installation

11
Initial Setup
User Account Setup
1. After downloading the Bosch Connected Control app,
open the app on your smartphone and click the Register
button to create a new account.
2. Read and accept the Terms and Conditions and Privacy
policy, and press continue in the top right hand corner.
3. Follow the on-screen instructions to create your account
and then press OK at the bottom of the screen.
4. After a successful registration, you can use your newly
created user ID and password to log into your account.
Note: You will also receive a confirmation email from the
Bosch Team confirming your account creation.
Add Device
1. After signing into your account, click the plus sign (+) in the
top right hand corner to add a new device.
2. On the next screen, click the device you would like to add,
in this case the BCC100.
3. Return to your thermostat and click Ok to initiate the Initial
Setup.
Note: If you skip this step, you will be required to repeat the
initial setup in the future to make any changes or
adjustments to the thermostat settings.
4. Follow the on-screen instructions to name your thermostat
and connect your smartphone to the device.
5. If your thermostat is unable to connect to the app, follow
the on-screen instructions.
Add Device
Device Name
Device MacID
BOSCH x
For Automatic Entry (Recommended):
Scan QR code found in “Wi-Fi settings” screen
For Manual Entry:
Enter MacID and temporary verification code.
MacID can be found on device label, package,
or “Wi-Fi settings” screen. Temporary verification
code can be found on the Wi-Fi settings screen
on your thermostat.
Temporary Verification Code 1234
OK
MAC ID and Temporary
Verification Code
You can find the MAC ID and
Temporary Verification Code by
navigating to the Wi-Fi Settings
screen on your thermostat and
clicking the Registration button.

12
Initial Setup
If you have a dual fuel system
1. Select Dual Fuel and click the Next Arrow at the
top right corner of the screen.
2. Then follow the on-screen instructions to configure the
fossil fuel fan control settings
3. Click Next Arrow at the top right corner of the screen.
Then follow the on-screen instructions to configure
the heat pump dual fuel changeover settings.
If you have a furnace
1. Select Fossil Fuel and click the Next Arrow at the top right
corner of the screen.
2. Then select Appliance or Thermostat depending on your
personal preferences for fan control.
3. Click Next Arrow at the top right corner of the screen.
If you have a heat pump
1. Select Heat Pump and click the Next Arrow at the top right
corner of the screen.
2. Then follow the on-screen instructions.
3. Click Next Arrow at the top right corner of the screen.
4. Configure the reversing valve for O (energized in cool)
or B (energized in heat) and enable/disable Emergency
Heat and/or Auxiliary Heat.
If you have a boiler
1. Select Fossil Fuel and click the Next Arrow at the top right
corner of the screen.
2. Then select Appliance
3. Click Next Arrow at the top right corner of the screen.
Unit Configuration
Select your home’s heating type, stage configuration for
heating and cooling, and type of accessory (humidifier or
dehumidifier) if available.
Select your heat type
Select your Heat Type according to the heating appliance
located in your home. Below is a list of helpful tips that may
guide you to selecting the correct option for your home.
Note: If you are unsure of which option to select, contact
your local contractor or our support line: 1-800-283-3787.
For a quick and easy way to begin using your new smart
thermostat, the device will automatically direct you to the
Initial Setup screen after you have turned it on for the first time.

13
If you have an electric system
Select Electric and click Next Arrow at the top right
corner of the screen
If you have no heating appliance
Select No Heating and click Next Arrow at the top right
corner of the screen
Select your stage configuration
Select your stage configuration according to the heating
and cooling appliances you have in your home and
then click Next Arrow at the top right corner of the screen.
4. Use the Balance Point to set the outdoor temperature value
the thermostat will use to switch between your heat pump
and fossil fuel appliance. Above this value, your thermostat
will use your heat pump to heat your home and below this
value, your thermostat will use your fossil fuel heating
appliance.
5. Use the Change over Delay to set the time the system will be
off when changing between heat pump and fossil fuel heating
sources. This delay allows for the coil to cool before switching
between heating appliances.
Note: In a dual fuel system, the BCC100 automatically enables
auxiliary heating using the fossil fuel heating appliance.
Note: In a dual fuel system, the BCC100 will stage up from heat
pump to fossil fuel following the stage settings, which can be
modified in Advanced Settings > Installer Access > by using the
ST Action Code.
6. Click Next Arrow at the top right corner of the screen.
If you have a whole home humidifier or dehumidifier
accessory wired to your thermostat, select the type of
accessory you have in your home; otherwise, click None
and then click Next Arrow.
Note: Professional installation is recommended for humidifiers
and dehumidifiers.
If you have a Humidifier
1. Select Humidifier and click the Next Arrow at the top right
corner of the screen.
2. Then select Evaporative or Steam following the on-screen
instructions. For Evaporative the humidifier is activated only
during active heating. For Steam the humidifier is activated
regardless of a heating call.
3. Click Next Arrow at the top right corner of the screen.
If you have a Dehumidifier
1. Select Dehumidifier and click the Next Arrow at the top right
corner of the screen.
2. Then enable or disable Cool to Dehumidify following the
on-screen instructions. If Cool to Dehumidify is enabled the
dehumidifier is activated only during active cooling. If
disabled the dehumidifier is activated regardless of a
cooling call.
3. Click Next Arrow at the top right corner of the screen.
NeedHelp?
If you are unsure of which option to select,
contactyourlocalcontractororour
supportline:1-800-283-3787.

14
Initial Setup
Date & Time
Follow the on-screen instructions to set the date and time of
BCC100 Thermostat and then click Next Arrow at the top right
corner of the screen.
On Device
Enter your location’s current date and time; after the device is
registered or linked to a user account, the date and time on
the device will automatically update to the current time
associated with the user account.
APP
The date and time for the device, as well as the user account,
will automatically update by selecting the time zone for the
device.
Wi-Fi
The BCC100 requires a reliable Wi-Fi connetion in order to
access smart features such as remote access, weather
forecast and more. To complete the Wi-Fi setup, follow the
on-screen instructions.
Scan
To start Wi-Fi setup, click the Scan icon to view available Wi-Fi
networks. Follow the on-screen instructions to complete the
Wi-Fi setup.

Manual Entry
If you are trying to connect to a hidden network, press the
SSID button to bring up the SSID screen. Enter your SSID into
the text box, then follow the on-screen instruction to complete
the Wi-Fi setup.
Note: If this is a first time installation, follow the instructions in
the App Setup section of this User Guide to register your
thermostat to your smart device.
The following may cause a failed connection to the device:
u Wi-Fi signal is too weak
u 5 GHz Wi-Fi network is not supported
u SSID contains space or non-ASCII characters
u Incorrect password
u Wi-Fi is okay but your internet is unavailable
u Additional web authentication is not supported
After you have successfully established a connection, your
network name appears. If your thermostat is already
registered to your account on your smart device, your User ID
name appears. Follow additional instructions on the screen to
complete setup. After completing the setup, download the
Bosch Connected Control App from the Apple Store or Google
Play Store. Create an account within the app and then add a
device (BCC100) by following the on-screen instructions.
Note: For all smart devices that require access to the same
thermostat, you must use the same account.

16
Schedule
Choose the schedule you would like to modify, or select No
Schedule if you do not wish to set up a schedule at this time,
and click the Setup button or Next arrow.
Note: Home is the default schedule for your BCC100. If you wish
to add a different schedule, use the Bosch Connected Control
App.
To set up your periods for the day, click on the Start Time
bubble of the period and use the Up/Down arrows to set the
start time of the first period of the day.
1. Next, click the Heat bubble and use the Up/Down arrows to
set the heating setpoint for the first period of the day.
2. Then, click the Cool bubble and use the Up/Down arrows to
set the cooling setpoint for the first period of the day.
For an unregistered device, click the green Registration button
to register your account. If you want to register a different
account to your device, you can also click the Registration
button and follow the steps outlined in the App Setup section
of this User Guide.
Auto Reconnect
If your device loses connection with your wireless network, it
will automatically attempt to reconnect after 5 minutes. If that
fails, it will make a new attempt every 15 minutes for the next
24 hours. Any manual network reconfiguration of the
thermostat will stop automatic reconnection attempts.
Initial Setup

17
Note: There is a 5 degree deadband required between
heating and cooling setpoints to prevent equipment from
short cycling.
3. If you want to add more periods, then click add period
button and repeat the above 3 steps until you have set all
your periods for the day.
Note: You are allowed a maximum of 8 periods per day.
4. If you want to delete a period, select any bubble
corresponding to that period and click Delete.
5. After you have set up one day of the week, use the Copy
section to mirror the same daily schedule to other days of
the week by clicking on the days you would like to copy that
daily set of periods. Then click next.
Note: If you have not copied your schedule to all 7 days of
the week, you will be required to repeat the above steps until
you have set a schedule for everyday of the week.
On Device
During offline operations, only 2 schedules (Home and
Vacation) are available. However, when a Wi-Fi connection is
established, the list can be expanded up to 4 schedules.
Home
You can use this schedule to set your heating/cooling
equipment to predefined set points. The device initially comes
with a factory default schedule, which can be adjusted as
necessary.
Vacation
This schedule will be used to set your heating/cooling
equipment to 2 periods with set points (1 heating and 1
cooling) that can be manually adjusted. However, you will not
be able to add additional or remove current periods. The
schedule can be used for vacation or permanently setting a
heating/cooling set point.

18
Review
In the final step, the BCC100 provides a summary review of
information that you have entered into the thermostat. You will
be able to go back to different parts of the Initial Setup guide
by pressing the different sections on the left pane or using the
Previous arrow. If you have completed the review, please
press the Complete button to start utilizing your BCC100!
Congratulations!
You have finished the
installation and setup of
your BCC100 Thermostat.
Thank you for choosing
Bosch and enjoy the
savings and comfort of
owning your Bosch
Connected Control
thermostat!
Initial Setup

19
Choose Comfort
Choose Bosch!

20
Advanced Settings allow HVAC professionals the ability to modify specific thermostat settings for better control of the heating
and cooling appliance(s). In order to access the Advanced Settings of the BCC100 Thermostat, your thermostat must be
connected to Wi-Fi. The Advanced Settings section is accessible from the Menu of the BCC100 thermostat.
FOR CONTRACTORS ONLY: Advanced Settings are for professional use only and require an access code
ACCESS CODE: 1886
Installer Access
u To access the Installer Access,click Advanced Settings, enter the Professional Access Code and click Installer
u Enter any one of the Action Codes in parenthesis below to gain access to that specific setting:
Humidity Calibration (HC)
Ability to adjust humidity readings after extended product use.
Relative Humidity Hysteresis (HSD)
Adjust the set point differential for the humidity control.
Initial Setup (IS)
Initial Setup process.
Sensor Calibration (SC)
Ability to adjust temperature readings after extended use.
Sensitivity Level (SS)
The lower the level, the more your system cycles to maintain the set point(s).
Staging (ST)
Configuration options: Latching, Stage Delay and Stage Temp.
Advanced Settings