Room temperature controller Type CR24-B1
Room temperature controller type ALT24/SUPER
Reduced operating costs due to intelligent sensor technology
Optional equipment
Application
Variants
Functional description
Room temperature controller and VAV terminal unit, including control components, form a functional unit that allows occupants to control the room temperature individually and at the lowest possible energy consumption. It also allows to control the water valves of hot water or chilled water systems.
The room temperature control is a closed loop control. The controller is fitted with a temperature sensor that measures the room temperature. The setpoint value can be a constant value or it can be changed by room occupants.
The controller compares the actual value with the setpoint value and alters the volume flow rate setpoint value and/or the valve settings accordingly.
The room temperature control is P control or PI control.
Maximum energy efficiency is achieved because of demand-based operating modes that can be activated by the room occupant or at a higher level.
Operating modes
Energy-saving mode
The room temperature is so that devices will not suffer, i.e. the setpoint temperature for heating is very low, and the setpoint temperature for cooling is very high, i.e. in a room with an open window.
Stand-by mode
The setpoint temperature for heating is slightly reduced, and the setpoint temperature for cooling is slightly increased, e.g. for a room that is currently not used.
Frost
If the room temperature falls below 10 °C, the anti-freeze function is activated.
Changeover
Changeover from cooling to heating or from heating to cooling.
Boost
The room can be ventilated, heated, or cooled with maximum volume flow (qvmax) at maximum output.
Room temperature controller CR24-B1
| Supply voltage | 24 V AC ± 20%, 50/60 Hz |
| Power rating | 3 VA |
| External temperature sensor | Type NTC, 5 kΩ, 10 – 45 °C |
| External setpoint value changes | 0 – 10 V DC corresponding to 0 – 10 K |
| Output for variable volume flow | 0 – 10 V DC, max. 5 mA |
| IEC protection class | III (Protective extra-low voltage) |
| Protection level | IP 30 |
| EC conformity | EMC according to 2004/108/EC |
| Dimensions (B × H × T) | 84 × 99 × 32 mm |
| Weight | 0.105 kg |
Room temperature controller CR24-B2
| Supply voltage | 24 V AC ± 20%, 50/60 Hz |
| Power rating | 3 VA |
| External temperature sensor | Type NTC, 5 kΩ, 10 – 45 °C |
| External setpoint value changes | 0 – 10 V DC corresponding to 0 – 10 K |
| Output for variable volume flow | 0 – 10 V DC, max. 5 mA |
| Output heating valve | 3-point, 24 V AC, max. 0.5 A, 10 VA, optimised for actuators with a runtime of approx. 150 s |
| IEC protection class | III (Protective extra-low voltage) |
| Protection level | IP 30 |
| EC conformity | EMC according to 2004/108/EC |
| Dimensions (B × H × T) | 84 × 99 × 32 mm |
| Weight | 0.105 kg |
Room temperature controller CR24-B3
| Supply voltage | 24 V AC ± 20%, 50/60 Hz |
| Power rating | 3 VA |
| External temperature sensor | Type NTC, 5 kΩ, 10 – 45 °C |
| External setpoint value changes | 0 – 10 V DC corresponding to 0 – 10 K |
| Output for variable volume flow | 0 – 10 V DC, max. 5 mA |
| Output for heating/cooling | 0 – 10 V DC, max. 5 mA |
| Output heating valve | 3-point, 24 V AC, max. 0.5 A, 10 VA, optimised for actuators with a runtime of approx. 150 s |
| IEC protection class | III (Protective extra-low voltage) |
| Protection level | IP 30 |
| EC conformity | EMC according to 2004/108/EC |
| Dimensions (B × H × T) | 84 × 99 × 32 mm |
| Weight | 0.105 kg |
Room temperature controller ALT24/SUPER
| Supply voltage | 24 V AC, 50/60 Hz |
| Power rating | 1.2 VA |
| External temperature sensor | Thermistor NTC 50 kΩ at 25 °C |
| Outputs 11, 12, and 13 | 24 V AC, max. 2.6 A |
| Output 14 | 24 V AC, max. 1 A |
| Output 15 and 16 (via jumper) | 24 V AC or 0 to 10 V DC, max. 5 mA |
| Inputs T1, IN (configurable) | U/I - D/I and 0 - 10 V |
| IEC protection class | III (Protective extra-low voltage) |
| Protection level | IP 30 |
| EC conformity | 2014/30/EU (EMC Directive) |
| Flammability | UL 94 V–0 |
| Ambient temperature (operation / storage) | 0 bis +50 °C / -10 bis +60 °C |
| Ambient air humidity (operation / storage) | 80 % RH |
| Material | PC-ABS |
| Dimensions (B × H × T) | 92 × 80 × 22 mm |
| Weight | 0.136 kg |
Specification text
Room temperature controller for the control of VAV terminal units Attractive unit for wall mounting, with a setpoint value adjuster and a push button to select the operating mode Integral temperature sensor (NTC) and input for external temperature measuring unit. Voltage output 0 – 10 V DC for connection to an electronic volume flow controller for cooling or heating and cooling in changeover mode.
Technical data
| RC | – | B1 |
| | | | | |
| 1 | 2 |
Application
Parts and characteristics
Commissioning
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For general question regarding products or services you can also call:
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