CR24-A1 Room temperature controller with 1 sequence AC 24 V Auto mode - Belimo
£154.56
£128.80
On request
SKU
CR24-A1
Next Supplier Stock Update: 15/03/2025
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Manuals & Datasheets
| DATA-SHEET |
 |
| Product type | Controller |
| IP rating | IP30 |
| Manufacturer | Belimo |
| Power Supply | 24Vac/Vdc |
| Parametric | Room Controller |
| Programmable | Controllers |
CR24-A1 Room temperature controller with 1 sequence AC 24 V Auto mode
• Room temperature controller with 1 sequence
• AC 24 V
• Auto mode, without manual operation
• Setpoint: 18...35º C
• Temperature sensor: NTC internal 0, external: 10...45º C
• 4 inputs: EHO, (Stand-by / C/O),
• 0...10 V shift, ext. temperature sensor
• 1 output: VAV 0/2...10 V
• Control characteristics: modulating, P-controller, P-Band switchable
• Housing colour white RAL 9003
• Base colour light grey NCS 2005 -R 80 B
Features
Energy hold off: In energy saving mode, the room temperature is reduced to building protection level, i.e. eitherthe heating setpoint is significantly reduced or the cooling setpoint is significantly increased, forinstance in a room with an open window.
Stand-by: The room temperature is reduced to stand-by level, i.e. either the heating setpoint is slightlyreduced or the cooling setpoint is slightly increased, for instance in a room that is temporarilyunoccupied.
Frost: The frost protection function is activated if the actual room temperature falls below 10°C.
Change-over: Change-over heating or heating/cooling.
External temperature sensor: An external temperature sensor can be connected to the analog input ai1, for instance in orderto measure the average room temperature in the exhaust air duct.
External setpoint shift: An external DC 0...10 V signal at the analog input ai2 can be used to shift the basic setpoint0...10 K, for instance for the summer/winter compensation.
• Electrical data Nominal voltage AC 24 V 50/60 Hz
• For wire sizing 3 VA, without actuators
• Connections Terminal block 1...3: 2.5 mm2 Terminal block 4...8: 1.5 mm2
• Functional data Control characteristics P– P-band heating / coolingSelectable: 1.5 / 1.0 K or 3.0 / 2.0 K
• External temperature sensor (ai1) Type NTC, 5 kΩ, sensing range 10...45°C for example Belimo type TFK
• Heating setpointRange 15...36°C (default 21°C)– Energy hold offHeating 15°C / cooling 40°C– Stand-byHeating –2 K / cooling +3 K
• Dead band1 K
• Frost limit temperature10°C
• Operation (CR24-B.. only)– Mode switch and status indication (LEDs) AUTO (green) – ECO (orange) – MAX (red)– Rotary knob for setpoint adjustment±3 K
• Communication port for field devices2 x PP (for PC-Tool, MFT remote control etc.)
• Inputs2 x analog, 2 x digital– External temperature sensor (ai1)Type NTC, 5 kΩ, sensing range 10...45°C– External setpoint shift (ai2)0...10 V corresponds to 0...10 K– Digital inputs (di1, di2)Contact rating 10 mA
• Outputs1 x analog– VAV system output (ao1)(0)2 ... 10 V, max. 5 mA
• Norms und standardsProtection classIII Safety extra-low voltageDegree of protectionIP 30 to EN 60529Mode of operationType 1 to EN 60730-1Software classA to EN 60730-1EMCCE conformity to 89/336/EEC
• Ambient conditions– Operation0...+50°C / 20...90% rH (without condensation– Transport and storage–25...+70°C / 20...90% rH (without condensation
• Dimensions / Weight Dimensions (H x W x D) 99 x 84 x 32 mm
• Weight 105 g
• Housing colors Baseplate CoverNCS2005-R80B light gray(corresponds approx. to RAL 7035)RAL 9003-Signalweiss