Bosch CR 10 User Manual
EMS 2
6 720 646 193-00.2O
CR10
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2 | General safety instructions
1 General safety instructions
Installation and commissioning
▶ Observe all country-specific regulations and standards during installation and
operation!
▶ All instructions must be observed. Failure to comply with instructions may result
in material damage and personal injury, including possible loss of life.
▶ Ensure that the user interface is installed and commissioned by an approved
contractor.
▶ Do not install the user interface in wet areas.
▶ Install and commission the heat source and other accessories in accordance with
the relevant instructions.
▶ Never connect the user interface to the 230 V mains.
▶ Before installing the user interface: electrically isolate the heat source and all
other BUS units from the power supply and secure against unintentional
reconnection, making sure that the power supply is completely disconnected.
Damage caused by frost
The system can freeze, if it is not in operation:
▶ Leave the system switched on, if the outside temperature is below 0 °C.
▶ If the user interface is used as a controller, system frost protection is not
possible. System frost protection can only be reliably guaranteed, if weather-
compensated control is used.
▶ Correct any faults immediately.
2 Product Description
Possible applications
• Room temperature-dependent controller for systems with one heating circuit
without mixer
• Zone controller for one heating circuit without mixer but with zone module and
max. 8 heating circuits in systems without a higher-level user interface
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Product Description | 3
• Remote control in systems with higher-level user interface (e.g. CW 400 with
max. 4 heating circuits or CW 800 with max. 8 heating circuits), can be used
solely as a remote control in conjunction with heat sources with an external
cylinder primary pump
Use
• Heat source with 2-wire BUS system, EMS 2 or OpenTherm
• Combination with timers (e.g. MT10, ...) is possible
• Combination with TR..., TA..., FR... and FW... is not possible.
Scope of delivery
• User interface
• Technical documentation
Technical specifications
Dimensions (W × H × D) 82 x 82 x 23 mm
Rated voltage 10 ... 24 V DC
Rated current 4 mA
BUS interface EMS 2 (2-wire BUS, OpenTherm)
Control range 5 ... 30 °C
Permitted ambient temperature 0 ... 60 °C
Protection class III
IP rating IP20
Product data on energy consumption
The following product data complies with the requirements of EU Regulation 811/
2013 as a supplement to Directive 2010/30/EU. The class of temperature controller
is required to calculate the central heating energy efficiency of an integrated system,
and it is therefore incorporated into the system data sheet.
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4 | Product Description
Function Class
1)
[%]
1),2)
CR 10
Room temperature-dependent,
V 3.0 z
modulating
CR 10
& zone module
Room temperature control system with
VIII 5.0 z
t3 temperature sensors (zone control),
modulating
z Delivered condition
1) Classification in accordance with EU Regulation No. 811/2013 for
identification of integrated systems
2) Contribution to seasonal energy efficiency for central heating in %
2.1 Function as room temperature-dependent controller
The CR 10 controls the heat source via the room temperature. Only allowed with
timer in Germany. The user interface is not suitable for controlling heat sources from
other manufacturers with an OpenTherm BUS system (no OpenTherm certificate).
Output control (only 2-wire bus/EMS 2)
The heat output of the heat source changes according to the deviation between the
current and required room temperature. This method of control is suitable for a
uniform temperature level, e.g. open-plan house. There are fewer burner starts and
shorter pump runtimes. This control mode may not be available depending on the
heat source that is connected.
Flow temperature control (2-wire BUS/EMS 2/OpenTherm)
The flow temperature changes according to the deviation between the current and
required room temperature. This method of control is suitable for residential units
and houses with different temperature zones. The accuracy of control is greater and
the flow temperature is limited. This saves fuel.
The pump runtimes can be shortened by means of optimised running of the pump.
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Operation | 5
2.2 Function as zone controller (only 2-wire BUS/EMS 2)
The CR 10 can be used in conjunction with zone modules without a higher-level user
interface as a controller for max. 8 heating circuits (for further information, see the
technical documentation of the zone module).
The zone temperature is controlled in the same way as with the function of a room
temperature-dependent controller with set flow temperature control.
2.3 Function as remote control (only 2-wire BUS/EMS 2)
The CR 10 can be used as a remote control for a higher-level user interface.
The time program is determined by the higher-level user interface. The required room
temperature can be temporarily changed at the CR 10 until the next switching time of
the time program. After this, the higher-level user interface has priority until the
setting is changed again at the CR 10.
3 Operation
°C
°F
[1] Display
[2] Selector: select (turn) and confirm (press)
1
2
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6 | Information for heating contractor
Description of the displays Example
Current room temperature (standard display)
Required room temperature:
▶ Press selector to briefly display the required room temperature
(flashing).
Service display (maintenance required)
▶ Press selector to switch to the standard display.
Fault display alternating between fault code and sub-code
(eliminate Æ faults)
▶ Press selector to briefly display the current room temperature.
Setting the required room temperature Result
▶ Turn the selector to select the required room temperature.
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
▶ Press the selector to confirm the setting.
Switching off the heating system Result
▶ Reduce the required room temperature until OFF appears.
When the heating system is switched off, frost protection for the
room is also switched off. Frost protection for the heat source
remains active.
4 Information for heating contractor
4.1 Installation
▶ Install the user interface on an even wall (Æ Fig. 1 to 2 from page 22).
4.2 Electrical connection
°C
°F
°C
°F
Power is supplied to the user interface via the BUS cable.
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Length Recommended cross-
Type of cable
section
d 100 m 0.50 mm
d 300 m 1.50 mm
2
2
At least H05 VV ... (NYM-J...)
Table 1 Permitted BUS cable lengths
▶ Route and connect the BUS cable properly.
▶ Establish the BUS connection (Æ Fig. 3, page 23).
For designation of the BUS terminal, see the technical documentation for the heat
source.
4.3 Connection diagrams with system schematics
The hydraulic diagrams are only schematic illustrations and provide a non-binding
indication of a possible hydraulic circuit.
E.g. Fig. 4, page 24 shows a system schematic for 2 heating circuits without mixer
but with zone module and DHW heating, with individual setting of the 2 CR 10 and
the MZ 100 zone module
4.4 Commissioning
Initial commissioning or commissioning after a reset.
Systems with one heating circuit (room controller)
▶ Switch on the system / reset CR 10.
Three dashes are displayed while the connection is being
established. The room temperature is displayed after the
connection has been established.
Systems with several heating circuits (zone controller/remote control)
▶ Switch on the system / reset CR 10.
Three dashes are displayed while the connection is being
established.
°C
°F
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8 | Information for heating contractor
Systems with several heating circuits (zone controller/remote control)
▶ A.1 = Set and confirm SC (zone controller).
-or-
▶ A.1 = Set and confirm Fb (remote control)
▶ Select and confirm heating circuit (HC = 1...8).
°C
°F
4.5 Settings in the service menu
Setting Adjustment range
A.1 CO | Fb | SC Controller (CO), remote control (Fb), zone
HC HC1 | HC2 | ... | HC7 |
HC8
d.1 2 | 3 | 4 Control characteristics (reaction speed)
1)
Description
controller (SC)
Heating circuit/heating zone 1 to 8
2: 2K P range = Quick reaction
2)
°C
°F
°C
°F
°C
°F
3: 3K P range = Medium reaction
4: 4K P range = Slow reaction
E.1 – 3.0 ... 0.0 ... 3.0 Correction value for the room temperature
displayed
P.1 4 | 5 Flow temperature control (4) or output
control (5)
L 1 1 | 0 Optimised running of the pump: in the case
of flow temperature control, the heating
pump runs as briefly as possible.
Switching-off if there is a buffer cylinder in
the system.
C.1 C | F Unit of displayed temperatures °C (C) or °F
(F)
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Setting Adjustment range
S.1 nF.12.01 Software version
1)
Description
3)
F.1 1 | 0 Reset CR 10
0: Do not reset
1: Reset
1) Values in bold = default setting
2) Only one CR 10 can be allocated to each heating circuit.
3) Turn the selector to read out the whole value.
A reset restores the default setting. In the event of a power failure, the settings
including the heating circuit allocation are retained.
4.6 Operation (example)
Opening the service menu Result
▶ Press and hold the selector until 2 dashes are displayed.
▶ Release the selector to display the first setting.
Changing the setting (e.g. heating circuit HC) Result
▶ Select the setting.
▶ Press the selector to display the current value.
▶ Press the selector again to change the value.
▶ Select and confirm the required value.
▶ Press and hold the selector until the setting is displayed again.
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
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