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S4-CRK24-B1 • en • v1.2 • 06.2016 • subject to changes

www.belimo.eu

CRK24-B1

Technical data sheet

Product features

Energy hold off

(EHO)

In energy saving mode, the room temperature is regulated to the building protection level, i.e. 

the heating setpoint is significantly reduced or the cooling setpoint is significantly increased, for 

instance in a room with an open window.

Pre-comfort

The room temperature is reduced to stand-by level, i.e. the heating setpoint is slightly reduced 

and/or the cooling setpoint is slightly increased, for instance in a room that is temporarily 

unoccupied.

Frost

If the current room temperature falls below 10°C, then the frost function will be activated.

Dew point limitation

If the optional connectable dew point limiter responds, then the valve is moved into neutral 

position.

External temperature sensor

An external temperature sensor can be connected at analogue input ai1.

External setpoint shift

An external DC 0 ... 10 V signal at the analogue input ai2 can be used to shift the basic setpoint 

by 0 ... 10 K, e.g. for summer/winter compensation.

The functions are described in detail on pages 9 to 13.

Electrical installation

Wiring diagram

U5 

CRK24-B1

EHO

1

3

y

5

U

2

~

AC 24 V

0 … 10 

V

1

2

7

8

6

ao1

1

U5 

2

4

di2

3

5

ai1/di1

ai2

~

Notes

•  Connect via safety isolation transformer.

•  Parallel connection of other actuators possible. 

Note the performance data.

!

Configuration

Configuration

ao1 modulating

ao1 On/Off

1

2

3

4

5

6

ON

OFF

  

[V] 

ao1 

10 

7.3 

4.7 

0  10 

33 

66

90  100  [%] 

  

[V] 

ao1 

10 

0  10 

33 

66

90  100  [%] 

Shifting

Pr

e-comf

or

t

Dew point limiter

Actuator for 6-way valve

External NTC 

temperature sensor

DIP

Default settings

1 P-Band normal

P-Band wide

2 Output ao1 modulating Output ao1 On/Off

ao1

(heating)

ao1

(cooling)

ao1

(heating)

ao1

(cooling)

Inputs

Outputs

3

ai1 External temperature sensor

6

ao1 System output for 6-way valve

di1 Pre-comfort

Other connections

4

di2 Energy hold off / dew point

7

PP1 Diagnostic socket 1

5

ai2 External setpoint shift

Содержание CRK24-B1

Страница 1: ...tion 10 Pre comfort 11 Energy hold off EHO 11 Chilled ceiling with dew point monitoring 12 External setpoint shift 12 External temperature sensor ai1 13 Analogue outputs 13 Dimensions installation com...

Страница 2: ...imo eu Heated chilled ceiling applications Single room controller Accessories CRK24 B1 6 way ball valve and rotary actuators EXT K3B2 LR24A MP LR24A SR Diagnostic and setting device ZTH EU Setting for...

Страница 3: ...LR24A MP LR24A SR actuator This controller should therefore only be utilised in the actuator in combination with the 6 way ball valve The multitude of override features makes possible an economically...

Страница 4: ...4 20 S4 CRK24 B1 en v1 2 06 2016 subject to changes www belimo eu CRK24 B1...

Страница 5: ...2 10 V max 5 mA Norms and Standards Protection class III Safety extra low voltage Degree of protection IP30 EN 60529 Mode of operation Type 1 EN60730 1 Software class A EN 60730 1 EMC CE according to...

Страница 6: ...t analogue input ai1 External setpoint shift An external DC 0 10 V signal at the analogue input ai2 can be used to shift the basic setpoint by 0 10 K e g for summer winter compensation The functions a...

Страница 7: ...n be started with the mode switch which makes it possible to check the controller including nominal voltage AC 24V The three LEDs status display are used thereby to display the voltage level and the s...

Страница 8: ...8 20 S4 CRK24 B1 en v1 2 06 2016 subject to changes www belimo eu CRK24 B1...

Страница 9: ...nt range 15 36 C Operation Mode selection switch AUTO ECO MAX Mode display LED AUTO ECO MAX Setpoint adjustment rotary knob 3 K Inputs Pre comfort Dew point limitation Energy hold off EHO External tem...

Страница 10: ...int WA 1 K dead band 3 K Pre comfort Offset cooling Energy hold off fix 15 C building protection fix 40 C building protection Frost fix 10 C without function Setpoint calculation Examples Comfort Pre...

Страница 11: ...gy Hold Off EHO Digital input di2 If a local detector e g a window switch has an effect on the digital input di2 and closes the corresponding contact then the room will be regulated in energy savings...

Страница 12: ...r 6 way valve Cooling Heating Dew point reached Dew point l V ao1 10 7 3 4 7 2 0 10 33 66 90 100 ao1 heating ao1 cooling Dew point External setpoint shift Analogue input ai2 1 2 5 0 10 V ai2 AC 24 V C...

Страница 13: ...e required The simultaneous utilisation of Pre comfort at di1 is possible although in this case a switchover to the internal sensor is made see also Pre comfort As a result the current room temperatur...

Страница 14: ...14 20 S4 CRK24 B1 en v1 2 06 2016 subject to changes www belimo eu CRK24 B1...

Страница 15: ...housing to release the pcb 3 Remove the PCB Rotary knob for setpoint adjustment If the rotary knob has been removed proceed as follows a Insert the rotary knob approximately half way and turn it clock...

Страница 16: ...oning 1 Assemble the baseplate of the housing and connect the cables see page 15 2 Configure the DIP switches on the printed circuit board according to the required application 3 Assemble the printed...

Страница 17: ...d diameter and the transformer sizing Nominal voltage AC 24 V LED status indication Scenario A Scenario B Scenario C MAX red flash flash permanently on ECO orange flash flash permanently on AUTO green...

Страница 18: ...18 20 S4 CRK24 B1 en v1 2 06 2016 subject to changes www belimo eu CRK24 B1...

Страница 19: ......

Страница 20: ...73 info belimo de www belimo de At no charge Orders Tel 0711 1 67 83 83 Technical Consultation Tel 0711 1 67 83 84 Fax 0711 1 67 83 73 Personal consultation with Regional Sales Director in Berlin Hano...

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