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