www.belimo.eu S4-CRK24-B1 • en • v1.2 • 06.2016 • subject to changes 5 / 20
Technical data sheet CRK24-B1
Technical data
Electrical data Nominal Voltage AC 24 V 50/60 Hz
Dimensioning 3 VA, without actuators
Power supply range AC 19.2 … 28.8 V
Connections Terminal block 1 … 3: 2.5 mm2
Terminal block 4 … 8: 1.5 mm2
Functional data Control characteristics P
– P-band heating / cooling Selectable: 2.0 K / 1.0 K or 4.0 K / 2.0 K
External temperature sensor (ai1) Type NTC, 5 k�, Power supply range 10 … 45°C
e.g. Belimo Type TFK
Setpoint Adjustment range 15 … 36°C (Default 21°C)
– Energy hold off (EHO)
– Pre-comfort
Heating 15°C / Cooling 40°C
Heating –3 K / Cooling +3 K
Dead band 1 K
Frost protection limit 10°C
Operation
– Mode switch and status display (LED) AUTO (green) – ECO (orange) – MAX (red)
– Rotary knob for setpoint adjustment ±3 K
Communication connection for field devices 2 x PP (for PC-Tool, ZTH EU, etc.)
Inputs 2 x analogue, 2 x digital
– External temperature sensor (ai1) Type NTC, 5 k�, Power supply range 10 … 45°C
– External setpoint shift (ai2) 0 … 10 V correspond to: 0 … 10 K
– Digital inputs (di1, di2,) Contact rating 10 mA
Output 1x analogue
– 6-way ball valve (ao1) (0) 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 2004/108/EU
Ambient conditions
– Operation 0 … +50°C / 20 … 90% r.h. (non-condensating)
– Transport and storage 25 … +70°C / 20 … 90% r.h. (non-condensating)
Dimensions / Weight Dimensions (H x W x D) 99 x 84 x 32 mm
Weight 105 g
Housing colour Baseplate NCS2005-R80B light grey (corresponds approximately
to RAL 7035)
Cover RAL9003 signal white
Temperature controller for single-room
applications with one analogue output:
• The 6-way ball valve for the regulation of
a heated/chilled ceiling can be connected
with the analogue output ao1.
Safety notes
• The controller is not allowed to be used outside the specified field of application, especially
in aircraft or in any other airborne means of transport.
• It may only be installed by suitably trained personnel. Any legal regulations or regulations
issued by government agency authorities must be observed during assembly.
• The device does not contain any parts that can be replaced or repaired by the user.
• The device contains electrical and electronic components and is not allowed to be disposed
of as household refuse. All locally valid regulations and requirements must be observed.
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