Description
The Belimo LRF24 rotary actuator is engineered for precision and reliability in controlling ball valves within HVAC systems. With its fail-safe feature, it ensures system protection even in power outages, providing seamless operation and peace of mind. Designed for direct mounting and ease of use, this actuator is ideal for tradesmen and engineering companies seeking durable and efficient control solutions.
Electrical Data:
- Nominal Voltage: AC/DC 24 V
- Nominal Voltage Frequency: 50/60 Hz
- Nominal Voltage Range: AC 19.2...28.8 V / DC 21.6...28.8 V
- Power Consumption in Operation: 5 W
- Power Consumption in Rest Position: 2.5 W
- Power Consumption for Wire Sizing: 7 VA
- Connection Supply / Control: Cable 1 m, 2x 0.75 mm²
- Parallel Operation: Yes (note the performance data)
Functional Data:
- Torque Motor: 4 Nm
- Torque Fail-Safe: 4 Nm
- Direction of Motion Fail-Safe: Deenergised NC, valve closed (A – AB = 0%)
- Direction of Motion Note: For valves with L-bore (A – AB = 100%)
- Manual Override: With hand crank, can be fixed in any position
- Running Time Motor: 75 s / 90°
- Running Time Fail-Safe: <20 s @ -20...50°C / <60 s @ -30°C
- Sound Power Level, Motor: 50 dB(A)
- Position Indication: Mechanical
- Service Life: Minimum 60,000 fail-safe positions
Safety Data:
- Protection Class IEC/EN: III, Safety Extra-Low Voltage (SELV)
- Degree of Protection IEC/EN: IP54
- EMC: CE according to 2014/30/EU
- Certification IEC/EN: IEC/EN 60730-1 and IEC/EN 60730-2-14
- Type of Action: Type 1
- Rated Impulse Voltage Supply / Control: 0.8 kV
- Pollution Degree: 3
- Ambient Humidity Max.: 95% RH, non-condensing
- Ambient Temperature: -30...50°C [-22...122°F]
- Storage Temperature: -40...80°C [-40...176°F]
- Servicing: Maintenance-free
- Weight: 1.5 kg
Operating Mode:
The actuator moves the valve to the operating position while simultaneously tensioning the return spring. The valve returns to the fail-safe position by spring force when the supply voltage is interrupted.
Simple Direct Mounting:
The actuator mounts directly onto the ball valve with a single screw. The mounting orientation can be selected in 90° steps, allowing for flexible installation.
Manual Override:
The valve can be manually operated and fixed in any position using a hand crank. Unlocking is performed manually or automatically by applying the operating voltage.
High Functional Reliability:
The actuator is overload protected, requires no limit switches, and stops automatically when the end stop is reached.
Wire Colours:
- 1 = Black
- 2 = White
Electrical Installation:
Supply from an isolating transformer is required. Parallel connection of other actuators is possible, observing the performance data.
Notes:
- Only authorised specialists may carry out installation.
- The device must not be used outside the specified field of application.
- All locally valid regulations and requirements must be observed.
Why You Should Buy the Belimo LRF24 Rotary Actuator
The Belimo LRF24 rotary actuator stands out due to its reliable performance, ease of installation, and high functional reliability. Its fail-safe mechanism ensures that your HVAC systems remain protected and operational even during power outages. With minimal maintenance requirements and robust construction, the LRF24 is a valuable addition to any professional's toolkit, offering long-term efficiency and peace of mind.
For More Information:
Visit our website at https://www.ecospares.co.uk/collections/belimo for more information and to explore our range of Belimo products. If you need any assistance, please get in touch with us on 01772 284 626.
