Bosch FR 120 Instruction Manual

Operating instructions for the user
Room temperature controller with solar control
FR 120
6 720 612 481-00.1R
6 720 800 818 (2012/02)

6 720 800 818 (2012/02)
2|
Dear Customer,
The controller is the “cool head” of your heating
system. At the factory, we have set it up to suit
most requirements. As a result, daily operation is
very easy. The large and clear display of the
controller offers you “plain text” and shows you
all relevant information.
Program your heating
Using the controller, you can select when you
require less heat thus saving energy.
One example: You work and are away from home
during the day. You may then like to have the full
heating comfort in the morning and evening.
During the daytime, you'll save energy in
“economy mode”, whilst at night, the heating
system will go further into setback. You may, of
course, have very different demands, because
you're at home all day. No matter what your
lifestyle and habits, the heating system will
adjust perfectly to your requirements.
Even in unforeseen circumstances: 100 %
comfort
Perhaps you arrive home earlier than planned one
day and would like to have your home warm right
away, even though your heating appliance is
working in “economy mode” right now. In that
case, the controller changes over to “heating
mode” at the push of a button. In next to no time
you'll have it as cosy as you want. Another
example: You want to take a shower although
your heating appliance is operating in “economy
mode” right now. Here too, the solution is
available at the push of a button. The water is
heated and within the shortest time, you'll be
able to enjoy a hot shower. Subject to the type of
DHW heating, the “economy mode” starts again
automatically after 30 or 60 minutes.
Solar optimisation for DHW heating
With our patented process
“SolarInside-ControlUnit” you can save up to
15 % additional energy during DHW heating. You
will find details regarding the solar yield in the
info menu of the controller.
These operating instructions
These operating instructions contain the most
important information on the daily operation of
the controller.
You can find a list of further interesting controller
functions in Chapter 6
If you wish to “go deeper”, you will find detailed
descriptions of all available functions in the full
installation and operating instructions.
Technical terms are explained at the end of these
operating instructions.
We hope you will enjoy your new Bosch product!
Your Bosch team.

6 720 800 818 (2012/02)
Contemnts | 3
Contemnts
1 Key to symbols and safety precautions . . 4
1.1 Key to symbols . . . . . . . . . . . . . . . . . 4
1.2 Safety precautions . . . . . . . . . . . . . . 4
2 Information about the controller . . . . . . . 5
2.1 Disposal . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Cleaning the casing . . . . . . . . . . . . . 5
3 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Operation with closed flap . . . . . . . . . . . . 7
4.1 Controls . . . . . . . . . . . . . . . . . . . . . . 7
4.2 If you feel too cold or too hot . . . . . . 8
4.3 If you want to change the heating
program temporarily . . . . . . . . . . . . 8
4.4 If you want to change the DHW
program temporarily . . . . . . . . . . . . 9
5 Operation with flap open . . . . . . . . . . . . 10
5.1 Controls . . . . . . . . . . . . . . . . . . . . . 10
5.2 Changing the room temperatures for
the heating program permanently . 12
5.3 Constant room temperature . . . . . . 14
5.4 Adjusting the heating program . . . . 15
5.4.1 Adjusting the heating program to suit
individual requirements . . . . . . . . . 16
5.4.2 Resetting a heating program to its
factory settings . . . . . . . . . . . . . . . 17
5.5 Selecting and adjusting a DHW
program . . . . . . . . . . . . . . . . . . . . . 18
5.5.1 Combining a DHW program with the
heating program . . . . . . . . . . . . . . 19
5.5.2 Activating a DHW program . . . . . . . 20
5.5.3 Adjusting a DHW program
individually . . . . . . . . . . . . . . . . . . 20
5.5.4 Resetting a DHW program to its
factory settings . . . . . . . . . . . . . . . 21
5.6 Setting up a holiday program . . . . . 22
5.6.1 Setting the start of the holiday . . . . 22
5.6.2 Setting the end of the holiday . . . . 23
5.6.3 Starting the holiday program . . . . . 23
5.6.4 Terminating the holiday program
early . . . . . . . . . . . . . . . . . . . . . . . . 23
5.7 Changing the time and date . . . . . 24
5.7.1 Changing the time . . . . . . . . . . . . 24
5.7.2 Changing the date . . . . . . . . . . . . 24
6 Details regarding further functions . . . 25
7 Environmental protection . . . . . . . . . . . 26
8 Troubleshooting . . . . . . . . . . . . . . . . . . . 27
8.1 Troubleshooting “perceived”
faults . . . . . . . . . . . . . . . . . . . . . . . 27
8.2 Removing a displayed fault . . . . . . 29
9 Energy saving tips . . . . . . . . . . . . . . . . . 30
10 Menu structure . . . . . . . . . . . . . . . . . . . 31
Technical terms . . . . . . . . . . . . . . . . . . . 34

6 720 800 818 (2012/02)
4| Key to symbols and safety precautions
1 Key to symbols and safety precautions
1.1 Key to symbols
Warnings
Keywords at the start of a warning indicate the
type and seriousness of the ensuing risk if
measures to prevent the risk are not taken.
•NOTE indicates that material losses may
occur.
•CAUTION indicates that minor to medium
injury may occur.
•WARNING indicates that severe injury may
occur.
•DANGER indicates a risk to life.
Important information
Additional symbols
1.2 Safety precautions
BThese instructions must be observed to
ensure correct operation.
BRisk of scalding during thermal disinfection:
Apply thermal disinfection with DHW
temperatures in excess of 60 °C only when all
occupants have been informed of the risk of
scalding during this period. During that
period, avoid drawing off DHW if possible.
BWhen there is a risk of frost, leave the heating
appliance switched on and follow the frost
protection information.
Damage due to operator error
Incorrect operation can cause injury and/or
material damage.
BEnsure that children never operate this
controller unsupervised or play with it.
BEnsure that only individuals who can operate
this controller correctly have access to it.
Warnings in this document are
framed and identified by a warning
triangle printed against a grey
background.
If there is a danger due to
electricity, the exclamation mark in
the warning triangle is replaced by a
lightning symbol.
Important information where there
is no risk to people or property is
indicated with the adjacent symbol.
It is bordered by lines above and
below the text.
Symbol Explanation
BAction step
ÆCross-reference to other parts of
this document or to other
documents
•List/list entry
–List/list entry (second level)
Tab. 1

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Information about the controller | 5
2 Information about the controller
2.1 Disposal
BDispose of packaging in an environmentally
responsible manner.
2.2 Cleaning the casing
BIf required, use a damp cloth to wipe the
controller casing; for this never use harsh or
corrosive cleaning agents.

6 720 800 818 (2012/02)
6| Display
3Display
Fig. 1 Symbols in the display (examples)
Item Symbol Designation Explanation
1Temperature
indicator
Current or required room temperature
2Time and day Current time and day.
3Flashing
segment
Current time (1 segment = 15 minutes, here 13:45 h to
14:00 h) or switching time in the heating program.
4Full segments Period for Comfort mode (high room temperature) or
DHW heating (high DHW temperature),
1 segment = 15 minutes.
5Empty
segments
Period for Economy mode (medium room temperature)
or DHW heating (average DHW temperature),
1 segment = 15 minutes.
6No segment Period for Frost mode (low room temperature) or DHW
heating (low DHW temperature).
7Header Title of the next highest menu level, program etc.
83 text lines Menu points, info texts, setting values etc.
9Back Return to the menu level up.
10 Further text An arrow indicates if the displayed text is longer than 3
lines. Turning the rotary selector makes the additional
text visible.
11 Burner
operation
The heating appliance heats.
12 Operating
mode
Current operating mode Comfort / Economy / Frost.
13 Automatic
mode
Automatic changeover of the operating mode at the
selected switching times in accordance with the heating
program.
14 Holiday The holiday program is active.
Tab. 2 Symbols in the display
6 720 800 818-01.1O
9 12
h 15
18
2124
h
3
6
9 12
h 15
18
2124
h
3
6
3
2 4 6
12
5
1
9
8
11
7
1314 10
12 h
15
9
3

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Operation with closed flap | 7
4 Operation with closed flap
4.1 Controls
Fig. 2 Controls with closed flap
Item Element Designation Explanation
1Rotary selector •Turn rotary selector:
Display the setting of the required room
temperature and change it temporarily.
•Press rotary selector:
Confirm setting.
2Keys “Coming/Going” Immediately start the next operating mode Comfort /
Economy / Frost of the heating program. This changes
the heating program temporarily.
3Key “Immediate DHW” Start DHW heating immediately. This changes the
DHW program temporarily.
Tab. 3 Controls with closed flap
6720645348-01.2O
2
912 h15
18
2124h
3
6
3
1

6 720 800 818 (2012/02)
8| Operation with closed flap
4.2 If you feel too cold or too hot
You can check the current room temperature on
the display.
Displaying the room temperature settings
BTurn rotary selector one click.
Temporarily changing the room temperature
settings
With the flap closed, you can change the room
temperature temporarily with rotary selector
.
BTurn the rotary selector until the required
room temperature is displayed.
The temperature display flashes.
BPush the rotary selector.
The change applies until the next switching
time in your heating program is reached.
Afterwards, the settings of your heating
program will apply again.
4.3 If you want to change the
heating program temporarily
If you decide to go to bed earlier than usual, if you
leave your home or return early, you can start the
next operating mode Comfort /Economy /
Frost of the heating system with immediate
effect. This changes the heating program
temporarily until the next switching time has
been reached.
Start “Coming/Going”
BBriefly press .
The next operating mode Comfort /
Economy /Frost of the heating program
starts immediately with the required assigned
room temperature. The change is reflected in
the display.
Terminating “Coming/Going” early
BBriefly press .
“Coming/Going” is terminated and the
controller operates again according to the
heating program.
You can also permanently change
the room temperature
(ÆChapter 5.2).
The operating mode selector under
the flap must be set to auto
(ÆFig. 3 [2], page 10).

6 720 800 818 (2012/02)
Operation with closed flap | 9
4.4 If you want to change the DHW
program temporarily
If you want to take a shower although your
heating appliance is operating in "economy
mode" right now, you can start DHW heating
immediately by pressing . This changes the
DHW program temporarily.
Starting “DHW immediately”
BBriefly press .
The change is reflected in the display.
–During DHW heating, DHW is heated in a
DHW cylinder for 60 minutes to the
selected DHW temperature.
–When heating DHW with a combi boiler,
comfort mode is active for 30 minutes.
Terminating “Immediate DHW” early
BBriefly press .
“Immediate DHW” is terminated and the
controller operates again according to the
DHW program.
See the operating instructions of the
heating appliance for further
information regarding comfort
mode.

6 720 800 818 (2012/02)
10 | Operation with flap open
5 Operation with flap open
5.1 Controls
Fig. 3 Controls with flap open
1
2
3
4
5
6
6720645348-02.2O
auto
912 h15
18
2124h
3
6

6 720 800 818 (2012/02)
Operation with flap open | 11
Item Element Designation Explanation
1Rotary selector •Turn the rotary selector:
–Display the current setting of the required
room temperature and change it temporarily.
–Scroll through the menu to change the value.
•Push the rotary selector:
–Open the menu.
–Confirm the setting.
2Operating mode selector •auto:
Heating according to the heating program.
•/ / :
Heating constantly according to operating mode
Comfort/Economy/Frost (the heating program is
switched off).
3Menu button Open and close the main menu.
4Info key Open and close the info menu. Display of current
information regarding the heating system, e.g.
heating, DHW, solar.
5“Delete” key Delete/reset a value in the menu.
6“Back” key Return to the menu level up.
Tab. 4 Controls with flap open
menu
info

6 720 800 818 (2012/02)
12 | Operation with flap open
5.2 Changing the room
temperatures for the heating
program permanently
The controller offers 3 temperature levels for
regulating the room temperature:
•Comfort: 21 °C (factory setting)
Setting range 7.0 °C ... 30.0 °C, but higher
than the value selected for Economy
•Economy: 15 °C (factory setting)
Setting range 6.0 °C ... 29.0 °C, but higher
than the value selected for Frost and lower
than that selected for Comfort
•Frost: 5 °C (factory setting)
Setting range 5.0 °C ... 28.0 °C, but lower than
the value selected for Economy
If you want to change the room temperature for a
longer period, proceed as follows.
Displaying the set temperature level
BOpen flap.
BTurn the operating mode selector in sequence
to positions / / .
The set room temperatures are displayed.
Changing the selected temperature level
BPress the menu key.
The MAIN MENU Frost is displayed; menu
point Heating is highlighted.
Fig. 4 Menu point Heating
BPush the rotary selector.
Menu HEATING is displayed; menu point
Programme is highlighted.
Fig. 5 Menu point Programme
BTurn the rotary selector to highlight the menu
point Heating levels.
BPush the rotary selector.
Menu TEMPERATURE LEVELS is displayed;
menu point Comfort is highlighted.
Fig. 6 Menu point Comfort
Then turn the operating mode
selector back to its original position
auto. Only at this point can the
automatic change of temperature
level in the heating program be
implemented.
6 720 800 817-01.1O
912 h15
18
21
24 h
3
6
6 720 800 817-02.1O
912
h
15
18
21
24
h
3
6
6 720 645 348-39.1O
912 h15
18
21
24 h
3
6

6 720 800 818 (2012/02)
Operation with flap open | 13
Example: Changing the economy temperature
level
BTurn the rotary selector to highlight the menu
point Economy.
BPush the rotary selector.
The input field for the required room
temperature flashes.
Fig. 7 Input field, required temperature
BTurn the rotary selector to set the required
room temperature.
BPush the rotary selector to confirm the
setting.
Menu point Economy is highlighted again.
BTurn the rotary selector to change the settings
for Comfort and Frost in the same way.
-or-
BPress the menu key to exit the menu.
The controller operates with the modified
settings.
6 720 645 348-40.1O
912
h
15
18
21
24
h
3
6

6 720 800 818 (2012/02)
14 | Operation with flap open
5.3 Constant room temperature
However, if you want to specify a constant room
temperature for a longer period, you can select
so-called constant operation with the operating
mode selector.
The following constant room temperature
settings are possible:
•: Comfort in constant operation
The controller regulates constantly to the
room temperature (high) set for operating
mode Comfort. Factory setting: 21 °C
•: Economy in constant operation
The controller regulates constantly to the
room temperature (average) set for operating
mode Economy. Factory setting: 15 °C
•: Frost protection in constant operation
The controller regulates constantly to the
room temperature (low) set for operating
mode Frost. Factory setting: 5 °C. The lead
room is protected against frost if the heating
system is switched on at the heating
appliance. Observe the further information in
the heating appliance operating instructions.
BOpen flap.
BTurn the operating mode selector to the
required position.
Leave the operating mode selector
set to auto as much as possible.
Only that way can you enjoy the full
comfort of the heating program.
NOTICE: Check the suitability of a
low room temperature for plants
and pets.
You can change the set
temperature with the rotary
selector (ÆChapter 4.2). Turning
the operating mode selector
cancels the modified temperature
again.

6 720 800 818 (2012/02)
Operation with flap open | 15
5.4 Adjusting the heating program
At the factory, a heating program is selected that
will suit most applications.
In this chapter you will discover how to match the
heating program to individual needs.
Comfort 21 °C (factory setting)
Frost 5 °C (factory setting)
Factory settings for program points P1 to P6
Day Switching time P1 Switching time P2 Switching time P3 to P6
Monday to Thursday 06:00 22:00 – –
Friday 06:00 23:30 – –
Saturday 07:00 23:30 – –
Sunday 08:00 22:00 – –
Tab. 5 Standard settings for heating program

6 720 800 818 (2012/02)
16 | Operation with flap open
5.4.1 Adjusting the heating program to suit
individual requirements
If the settings (temperature or switching times)
of the heating program do not meet your needs,
you can change the heating program.
BOpen flap.
BPress the menu key.
The MAIN MENU is displayed; menu point
Heating is highlighted.
BPush the rotary selector.
Menu HEATING is displayed; menu point
Programme is highlighted.
BPush the rotary selector.
Menu HEATING PROGRAMME is displayed;
menu point All days is highlighted.
BTurn the selector to highlight the required
group of days, e.g. Monday.
The following groups of days are available:
–All days (every day the same)
–Mon - Fri (all working days the same)
–Sat + Sun (Saturday and Sunday the same)
–Monday, Tuesday... (every day
individually)
BPush the rotary selector.
Menu EDIT PROGRAMME MON is displayed;
program point P1 is highlighted.
Fig. 8 Changing the program for Monday (P1)
BTurn the rotary selector to select a different
program point, e.g. P3.
-or-
BPush the rotary selector.
The segment display and the input field for the
switching time of P1 flash.
BTurn the rotary selector to set the required
switching time, e.g. 06:30.
Fig. 9 Setting the switching time
BPush the rotary selector to confirm the
setting.
The segment display and the input field for the
operating mode of P1 flash.
BTurn the rotary selector to select a different
operating mode, e.g. Economy.
Fig. 10 Setting the operating mode
BPush the rotary selector to confirm the
setting.
Program point P1 is highlighted.
BTurn the rotary selector to select a different
program point, e.g. P3.
-or-
BPress the menu key to exit the menu.
The controller operates with the modified
settings.
9 12
h
15
18
21
24
h
3
6
6 720 800 817-05.1O
912
h
15
18
21
24
h
3
6
6 720 800 818-03.1O
6 720 800 818-04.1O
912 h15
18
21
24 h
3
6

6 720 800 818 (2012/02)
Operation with flap open | 17
5.4.2 Resetting a heating program to its
factory settings
If you require the heating program to be returned
to its original settings, you can reset it to the
standard settings.
BOpen flap.
BPress the menu key.
The MAIN MENU is displayed; menu point
Heating is highlighted.
BPush the rotary selector.
Menu HEATING is displayed; menu point
Programme is highlighted.
BPush the rotary selector.
Menu HEATING PROGRAMME is displayed;
menu point All days is highlighted.
BTurn the rotary selector to highlight the menu
point Reset factory settings.
Fig. 11 Menu point Reset factory settings
BPush the rotary selector.
The input field No flashes.
BTurn the rotary selector to set Yes.
BPush the rotary selector to confirm the
setting.
The message The heating programme has
been reset to factory settings will be
displayed.
BPush the rotary selector.
Menu point Reset factory settings is
highlighted again.
BPress the menu key to exit the menu.
The controller then operates again with the
factory settings of that heating program.
6 720 800 818-05.1O
912 h15
18
21
24 h
3
6

6 720 800 818 (2012/02)
18 | Operation with flap open
5.5 Selecting and adjusting a DHW
program
At the factory, a DHW program is set that will suit
most applications. The DHW program comprises:
•a program for DHW heating
•a program for a DHW circulation pump
Both programs have already been matched to
each other and are enabled.
In this chapter you will discover how to either
combine programs with the heating program, or
how to adjust them individually.
Factory settings of the DHW heating program:
Factory settings of the DHW circulation pump program:
Day Program points
P1 P2 P3 to P6
°C / On/Off
Switching
time °C / On/Off
Switching
time °C / On/Off
Switching
time
Monday to
Friday
60 °C1) / On 2)
1) DHW heating with DHW cylinder
2) DHW heating with combi boiler
05:00 15 °C1) / Off2) 23:00 – –
Saturday 60 °C1) / On2) 06:00 15 °C1) / Off2) 23:00 – –
Sunday 60 °C1) / On2) 07:00 15 °C1) / Off2) 23:00 – –
Tab. 6 Factory settings of the DHW heating program
Day Program points
P1 P2 P3 to P6
On/Off
Switching
time On/Off
Switching
time On/Off
Switching
time
Monday to
Friday
On 06:00 Off 23:00 – –
Saturday On 07:00 Off 23:00 – –
Sunday On 08:00 Off 23:00 – –
Tab. 7 Factory settings of the DHW circulation pump program (the DHW circulation pump program is
only available for DHW heating with a DHW cylinder)

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Operation with flap open | 19
5.5.1 Combining a DHW program with the
heating program
If the heating program has already been adjusted
to suit your individual requirements, it may be
appropriate to use these settings also for DHW
heating.
The DHW program is disabled and operates
according to the active heating program.
BOpen flap.
BPress the menu key.
The MAIN MENU is displayed; menu point
Heating is highlighted.
BTurn the rotary selector to highlight the menu
point Domestic hot water.
Fig. 12 Menu point Domestic hot water
BPush the rotary selector.
The DHW menu is displayed; menu point DHW
and DHW circulation pump is highlighted.
BPush the rotary selector.
The input field Separate programmes
flashes.
BTurn the rotary selector to set As heating
programme.
BPush the rotary selector to confirm the
setting.
Menu point DHW and DHW circulation pump
is highlighted again.
BPress the menu key to exit the menu.
DHW heating operates in accordance with the
active heating program.
6 720 800 818-06.1O
912 h15
18
21
24 h
3
6
For further details regarding the
operation of DHW heating in
conjunction with the heating
program, see the detailed
installation and operating
instructions.

6 720 800 818 (2012/02)
20 | Operation with flap open
5.5.2 Activating a DHW program
If you wish to modify the DHW program
independently of the heating program, you can
re-enable the DHW program.
BOpen flap.
BPress the menu key.
The MAIN MENU is displayed; menu point
Heating is highlighted.
BTurn the rotary selector to highlight the menu
point Domestic hot water.
BPush the rotary selector.
Menu DHW is displayed; menu point DHW
and DHW circulation pump is highlighted.
BPush the rotary selector.
The input field As heating programme
flashes.
BTurn the rotary selector to set Separate
programmes.
BPush the rotary selector to confirm the
setting.
Menu point DHW and DHW circulation pump
is highlighted again.
BPress the menu key to exit the menu.
The DHW program will then operate again
independently of the heating program.
5.5.3 Adjusting a DHW program individually
You can change the DHW program if its settings
(e.g. switching times) do not meet with your
requirements. Ensure that the programs for DHW
heating and DHW circulation pump are
synchronised.
Adjusting a program for DHW heating
BOpen flap.
BPress the menu key.
The MAIN MENU is displayed; menu point
Heating is highlighted.
BTurn the rotary selector to highlight the menu
point Domestic hot water.
BPush the rotary selector.
Menu DHW is displayed; menu point DHW
and DHW circulation pump is highlighted.
BTurn the rotary selector to highlight the menu
point DHW programme.
BPush the rotary selector.
The DHW PROGRAMME menu is displayed.
If, at this point, As heating
programme is displayed, change the
setting to Separate programmes
(ÆChapter 5.5.2). Only then will
the next steps become available.
Generally, the steps correspond to
the setting of program points P1 ...
P6 of the heating program
(ÆChapter 5.4.1). Subject to the
type of your DHW heating, either the
DHW temperatures can also be set
in addition to the switching times, or
DHW heating can be switched on or
off.