Bosch CR 10 User manual

6720830560 (2015/06) div

CR10

6 720 646 193-00.2O

EMS 2

2| General safety instructions

6720830560 (2015/06)CR10

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

Product Description | 3

6720830560 (2015/06) CR10

•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

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.

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

4| Product Description

6720830560 (2015/06)CR10

zDelivered 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.

Function Class1) [%]1),2)

CR 10

Room temperature-dependent,

modulating

V 3.0 z

CR 10

& zone module

Room temperature control system with

t3 temperature sensors (zone control),

modulating

VIII 5.0 z

Operation | 5

6720830560 (2015/06) CR10

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

[1] Display

[2] Selector: select (turn) and confirm (press)

6 720 646 193-09.1O

°C

°F 1

6| Information for heating contractor

6720830560 (2015/06)CR10

4 Information for heating contractor

4.1 Installation

▶ Install the user interface on an even wall (ÆFig. 1 to 2 from page 22).

4.2 Electrical connection

Power is supplied to the user interface via the BUS cable.

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 Æfaults)

▶ Press selector to briefly display the current room temperature.

Setting the required room temperature Result

▶ Turn the selector to select the required room temperature.

▶ 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.

°C

°F

°C

°F

°C

°F

°C

°F

°C

°F

°C

°F

°C

°F

Information for heating contractor | 7

6720830560 (2015/06) CR10

Table 1 Permitted BUS cable lengths

▶ Route and connect the BUS cable properly.

▶ Establish the BUS connection (ÆFig. 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.

Length Recommended cross-

section

Type of cable

d 100 m 0.50 mm2At least H05 VV ... (NYM-J...)

d 300 m 1.50 mm2

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

8| Information for heating contractor

6720830560 (2015/06)CR10

4.5 Settings in the service menu

▶ 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).

Setting Adjustment range1) Description

A.1 CO | Fb | SC Controller (CO), remote control (Fb), zone

controller (SC)

HC HC1 | HC2 | ... | HC7 |

HC8

Heating circuit/heating zone 1 to 82)

d.1 2 | 3| 4 Control characteristics (reaction speed)

2: 2K P range = Quick reaction

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)

Systems with several heating circuits (zone controller/remote control)

°C

°F

°C

°F

°C

°F

°C

°F

Information for heating contractor | 9

6720830560 (2015/06) CR10

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)

S.1 nF.12.01 Software version3)

F.1 1 | 0Reset 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.

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.

Setting Adjustment range1) Description

°C

°F

°C

°F

°C

°F

°C

°F

°C

°F

°C

°F

°C

°F

10 | Eliminating faults

6720830560 (2015/06)CR10

5 Eliminating faults

If a fault cannot be eliminated, note down the fault code and sub-code:

▶ Contact the approved contractor or Customer Service.

▶ Advise the type of fault and ID no. of the user interface.

Table 2 ID no. on the rear of the user interface (to be entered by the installer)

If there is a fault, the display shows alternately the fault code and the 3-digit sub-

code.

In the case of 4-digit sub-codes, initially the first two digits and then the last two

digits are displayed alternately with the fault code (e.g.: A21 ... 10 ... 01 ... A21 ...

10 ... 01 ...).

Closing the service menu Result

▶ Press and hold the selector until 3 dashes are displayed.

▶ Release the selector.

The current room temperature is displayed and the user

interface operates with the changed setting.

__ _

°C

°F

°C

°F

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