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Product information

CR24-..

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oduct information

-CR2

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CR24-.. Single room controllers

Table of contents

Overview of the system

Overview of functions

Technical data sheets

CR24-B1 / CR24-A1 Single room controllers

CR24-B2 / CR24-A2 Single room controllers

CR24-B2E / CR24-A2E Single room controllers

CR24-B3 / CR24-A3 Single room controllers

Operation

Functions

Setpoint calculation

Energy hold off / Stand-by / VAV-Function

Electric air heater / External temperature sensor / Supply air temperature limitation

External setpoint shift / Air flush

Change-over

Boost

Chilled ceiling

Rolling start / Excess temperature protection / Step control

Dimensions, Installation, Commissioning, Service

Содержание CR24 Series

Страница 1: ...Single room controllers CR24 B2E CR24 A2E Single room controllers CR24 B3 CR24 A3 Single room controllers 5 7 9 13 Operation 15 Functions Setpoint calculation Energy hold off Stand by VAV Function Ele...

Страница 2: ...oduct information S4 CR24 en v2 3 08 2022 Subject to changes VAV applications Single room controllers Water applications Air applications CR24 B1 CR24 B2E CR24 B3 CR24 B2 Compact Universal Rotary actu...

Страница 3: ...st effective system solutions for individually controlling the room climate and reducing energy consumption The controllers can be used in both pure VAV and combined systems with 2 and 4 pipe water ap...

Страница 4: ...d Volume increase in heating mode selectable Internal function test including nominal voltage test Commissioning mode with output and sequence simulation VAV controller diagnosis via integrated PC Too...

Страница 5: ...otection IP 30 to EN 60529 Mode of operation Type 1 to EN 60730 1 Software class A to EN 60730 1 EMC CE conformity to 89 336 EEC Ambient conditions Operation 0 50 C 20 90 RH without condensation Trans...

Страница 6: ...y unoccu pied 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 externa...

Страница 7: ...f approx 150 s Norms und standards Protection class III Safety extra low voltage Degree of protection IP 30 to EN 60529 Mode of operation Type 1 to EN 60730 1 Software class A to EN 60730 1 EMC CE con...

Страница 8: ...cted to the analog input ai1 for instance in order to 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 u...

Страница 9: ...oltage Degree of protection IP 30 to EN 60529 Mode of operation Type 1 to EN 60730 1 Software class A to EN 60730 1 EMC CE conformity to 89 336 EEC Ambient conditions Operation 0 50 C 20 90 RH without...

Страница 10: ...ion can optionally be increased Output mode The do3 output mode can be set accordingly to the application to stage for one stage electrical reheater or on off radiator valve binary for two stage elect...

Страница 11: ...former Parallel connection of other actuators possible Note the performance data Inputs Outputs 3 ai1 Supply air temperature limiter 6 ao1 System output for Belimo VAV controller di1 Energy hold off 9...

Страница 12: ...12 www belimo com Product information S4 CR24 en v2 3 08 2022 Subject to changes...

Страница 13: ...w voltage Degree of protection IP 30 to EN 60529 Mode of operation Type 1 to EN 60730 1 Software class A to EN 60730 1 EMC CE conformity to 89 336 EEC Ambient conditions Operation 0 50 C 20 90 RH with...

Страница 14: ...shift An external DC 0 10 V signal at the analog input ai2 can be used to shift the basic setpoint 0 10 K for instance for the summer winter compensation These functions are described in detail on pag...

Страница 15: ...also during operation Internal function test A comprehensive internal function test including a nominal voltage test AC 24 V can be started for the controller with the mode switch The three LEDs statu...

Страница 16: ...16 www belimo com Product information S4 CR24 en v2 3 08 2022 Subject to changes...

Страница 17: ...mfort Basic setpoint WH 3 K Setpoint adjustment Setpoint shift 0 10 V Comfort heating setpoint WA 1 K Dead band Stand by Comfort heating setpoint WA 2 K Stand by offset heating Comfort heating setpoin...

Страница 18: ...to the automatic sensor detection the change into energy hold off takes about 40 seconds If a local detector e g a motion detector acts on the digital input di2 and closes the corresponding contact t...

Страница 19: ...60 70 80 C 30 40 50 60 70 80 An external NTC temperature sensor can be connected to the analog input ai1 Sensor type NTC 5k 5 k Function The temperature of the supply air is limited by shedding indi...

Страница 20: ...rooms hotel rooms etc e g time switch controlled Assisting smoke extraction Controlling air quality 2 point signal Notes The VAV output ao1 is set to a fixed value of V max 10 V The heating output ao3...

Страница 21: ...ting cooling output ao2 of the CR24 B3 controller Typical applications Change over heating or heating cooling Note For chilled ceiling applications refer to page 23 The CR24 B1 controller is suitable...

Страница 22: ...litate room preconditioning Boost V max Digital input di3 CR24 B3 only Configuration This boost function is configured using DIP switches 4 boost on and 5 boost V max 2 3 4 5 6 1 Configuration CR24 B3...

Страница 23: ...ng can be combined with the change over function Typical applications Switchable heated chilled ceiling systems that also require dew point limiting Chilled ceiling with dew point limiting Digital inp...

Страница 24: ...the local safety interlock STh from responding unless absolutely necessa ry and relieves the load on devices and installations When the system is started up after a power on or EHO off or when EHO ac...

Страница 25: ...sing cover 2 Pull out slightly the wall of the housing to release the pcb 3 Remove the printed circuit board Rotary knob for setpoint adjustment If the rotary knob has been removed proceed as follows...

Страница 26: ...y of the environment No of CR24 Cable cross section Cable length 10 0 75 mm2 max 250 m 20 0 75 mm2 max 200 m 20 1 00 mm2 max 250 m 25 0 75 mm2 max 170 m 25 1 00 mm2 max 220 m 25 1 50 mm2 max 250 m 30...

Страница 27: ...with the mode switch on the operator panel With CR24 A controllers the housing cover must be removed first To activate test mode 1 Set the mode switch to MAX The red LED MAX status indication lights...

Страница 28: ...ated without a flow Simulations can be carried out on the CR24 at any time even if the ventilation system is not operating The two triac outputs are activated for a maximum of 15 seconds in simulation...

Страница 29: ...www belimo com 29 Product information S4 CR24 en v2 3 08 2022 Subject to changes...

Страница 30: ...30 www belimo com Product information S4 CR24 en v2 3 08 2022 Subject to changes...

Страница 31: ...www belimo com 31 Product information S4 CR24 en v2 3 08 2022 Subject to changes...

Страница 32: ...m Agentina Australia Bahrain Belgium Bosnia Herzegovina Brazil Bulgaria Canada Chile Croatia Cyprus Czech Republic Denmark Egypt Estonia Finland France Great Britain Germany Greece Hong Kong Hungary I...

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