NFB and NFX Series Spring Return Direct Coupled Actuator Minimum 90 in-lb Torque ● For damper areas up to 22 sq-ft* Applications 3/4” 1” 1/2” Linkage solutions are available when direct coupling is not possible. NFB UP-S NFX UP-S (p. 6 9) NFB UP NFX UP (p . 69) NFB 24-S NFX 24-S (p. 6 7) NFB, NFX Series – At A Glance NFB 24 NFX2 4 (p.
NFB, NFX` Series Spring Return Direct Coupled Actuator M40024 - 05/10 - Subject to change. © Belimo Aircontrols (USA), Inc. A CLOSER LOOK… ● Cut labor costs with simple direct coupling. ● True mechanical spring return – the most reliable fail-safe. ● Mount for clockwise or counterclockwise fail-safe. ● Check damper position easily with clear position indicator. ● Don’t worry about actuator burn-out. Belimo is overload-proof throughout rotation.
NFB24, NFB24-S, NFX24, NFX24-S On/Off, Spring Return, 24 V • Torque min. 90 in-lb, for control of air dampers Application For On/Off, fail-safe control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications. Control is On/Off from an auxiliary contact, or a manual switch. The actuator is mounted directly to a damper shaft up to 1.05” in diameter by means of its universal clamp.
NFB24, NFB24-S, NFX24, NFX24-S On/Off, Spring Return, 24 V AV 8-25 IND-AFB KH-AFB K7-2 TF-CC US Tool-06 ZG-100 ZG-101 ZG-118 ZG-AFB ZG-AFB118 ZS-100 ZS-150 ZS-260 ZS-300 Wiring Diagrams Shaft extension Damper position indicator Crank arm Universal clamp for up to 1.05” dia jackshafts Conduit fitting 8mm and 10 mm wrench Universal mounting bracket Universal mounting bracket Mounting bracket for Barber Colman® MA 3../4..
NFBUP, NFBUP-S, NFXUP, NFXUP-S On/Off, Spring Return, 24 to 240 VAC Torque min. 90 in-lb, for control of air dampers Application For On/Off, fail-safe control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications. Control is On/Off from an auxiliary contact, or a manual switch. The actuator is mounted directly to a damper shaft up to 1.05” in diameter by means of its universal clamp.
NFBUP, NFBUP-S, NFXUP, NFXUP-S On/Off, Spring Return, 24 to 240 VAC Accessories AV 8-25 IND-AFB K7-2 KH-AFB TF-CC US Tool-06 ZG-100 ZG-101 ZG-118 ZG-AFB ZG-AFB118 ZS-100 ZS-150 ZS-260 ZS-300 Wiring Diagrams Shaft extension Damper position indicator Universal clamp for up to 1.05” dia jackshafts Crank arm Conduit fitting 8mm and 10 mm wrench Universal mounting bracket Universal mounting bracket Mounting bracket for Barber Colman® MA 3../4..
NFB24-SR, NFB24-SR-S, NFX24-SR, NFX24-SR-S Proportional, Spring Return, 24 V, for 2 or 10 VDC or 4 to 20 mA Control Signal Torque min. 90 in-lb, for control of air dampers Application For proportional modulation of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications. The actuator is mounted directly to a damper shaft up to 1.05” in diameter by means of its universal clamp.
NFB24-SR, NFB24-SR-S, NFX24-SR, NFX24-SR-S Proportional, Spring Return, 24 V, for 2 or 10 VDC to 4 to 20 mA Control Signal Accessories WARNING G Live Electrical Components! ZG-AFB ZG-AFB118 ZS-100 ZS-150 ZS-260 ZS-300 NOTE: When using NFB24-SR, NFB24-SR-S, NFX24-SR and NFX24-SR-S actuators, only use accessories listed on this page. For actuator wiring information and diagrams, refer to Belimo Wiring Guide.
NFB24-MFT, NFB24-MFT-S, NFX24-MFT, NFX24-MFT-S Proportional, Spring S Return, Multi-Function Technology® • TTorque min. i 90 in-lb i lb • Control 2 to 10 VDC (DEFAULT) • Feedback 2 to 10 VDC (DEFAULT) Application For proportional modulation of dampers and control valves in HVAC systems. The NFB24-MFT and NFX24-MFT provides mechanical spring return operation for reliable fail-safe application.
NFB24-MFT, NFB24-MFT-S, NFX24-MFT, NFX24-MFT-S Proportional, Spring Return, Multi-Function Technology® Shaft extension Damper position indicator Crank arm Universal clamp for up to 1.05” dia jackshafts Conduit fitting 8mm and 10 mm wrench Universal mounting bracket Universal mounting bracket Mounting bracket for Barber Colman® MA 3../4..
Product Cross Reference Current to New Generation NF120 US, NF120-S US NFBUP, NFBUP-S, NFXUP, NFXUP-S 60 in-lb [7 Nm] minimum 90 in-lb. [10 Nm] minimum Motor < 75 seconds <75 seconds Spring < 60 seconds Torque OPERATION Running Time Noise Level Max.
Product Cross Reference Current to New Generation NF120 US, NF120-S US NFBUP, NFBUP-S, NFXUP, NFXUP-S 120 VAC ± 10% 50/60 Hz 24…240 VAC -20 %/+10%, 50/60 Hz; 24…125 VDC +/- 10 % Running 7W 6W Holding 4W 2.5 W 9.5 VA 6 VA @ 24 VAC 6.5 VA @ 120 VAC 9.5 VA @ 240 VAC Power Supply Power Consumption ELECTRICAL WIRING Transformer Sizing Auxiliary Switches Electrical Connection CONSTRUCTION M40024 - 05/10 - Subject to change. © Belimo Aircontrols (USA), Inc.
Product Cross Reference Current to New Generation NF24 US, NF24-S US, NF24-S2 US NFB24, NFB24-S, NFX24, NFX24-S 60 in-lb [7 Nm] minimum 90 in-lb. [10 Nm] minimum Motor < 75 seconds < 75 seconds Spring < 60 seconds OPERATION Torque Running Time Noise Level Max.
Product Cross Reference Current to New Generation NF24 US, NF24-S US, NF24-S2 US NFB24, NFB24-S, NFX24, NFX24-S 24 VAC ± 20% 50/60 Hz; 24 VDC ± 10% 24 VAC, +/- 20%, 50/60 Hz; 24 VDC, +20/-10% Running 5W 6W Holding 2.6 W 2.5 W 8 VA (Class 2 power source) 8.5 VA (Class 2 power source) Power Supply Power Consumption ELECTRICAL WIRING Transformer Sizing Auxiliary Switches Electrical Connection CONSTRUCTION M40024 - 05/10 - Subject to change. © Belimo Aircontrols (USA), Inc.
Product Cross Reference Current to New Generation NFB24-MFT, NFB24-MFT-S, NFX24-MFT, NFX24-MFT-S NF24-MFT US OPERATION Torque 60 in-lb (8 Nm) minimum Running Time Motor 150 seconds (default); variable (75 to 300 seconds) 150 seconds (default), variable (40 to 220 seconds) Spring <60 seconds 20 seconds @ -4°F to 122°F [-20°C to 50°C]; <60 seconds @ -22°F [-30°C] <45 dB (A) 40dB(A) motor @ 150 seconds, run time dependent; 62dB(A) Spring Return Noise Level Motor Technology Brushless DC Motor
Product Cross Reference Current to New Generation MOUNTING & COMMISSIONING NF24-MFT US Angle of Rotation Power Supply 24 VAC, +/- 20%, 50/60 Hz; 24 VDC, +20/-10% Running 3W 6.5 W Holding 1.8 W 3W Transformer Sizing 6 VA (Class 2 power source) 9 VA (Class 2 power source)* Auxiliary Switches N/A (-S Models): Two SPDT 3A (0.
Product Cross Reference Current to New Generation NF24-SR US, NF24-SR-S US NFB24-SR, NFB24-SR-S, NFX24-SR, NFX24-SR-S 60 in-lb [7 Nm] minimum 90 in-lb. [10 Nm] minimum Torque OPERATION Running Time Motor 150 seconds constant, independent of load Spring < 60 seconds Noise Level Max.
Product Cross Reference Current to New Generation NF24-SR US, NF24-SR-S US NFB24-SR, NFB24-SR-S, NFX24-SR, NFX24-SR-S 24 VAC ± 20% 50/60 Hz; 24 VDC ± 10% 24 VAC, +/- 20%, 50/60 Hz; 24 VDC, +20/-10% Running 3W 3.5 W Holding 1W 2.5 W 6 VA (Class 2 power source) 6 VA (Class 2 power source) Power Supply Power Consumption ELECTRICAL WIRING Transformer Sizing Housing Rating CONSTRUCTION (-S Models): Two SPDT 3A (0.
Installation Instructions Quick-Mount Visual Instructions for Mechanical Installation Quick-Mount Visual Instructions 1. Rotate the damper to its failsafe position. If the shaft rotates counterclockwise, mount the “CCW” side of the actuator out. If it rotates clockwise, mount the actuator with the “CW” side out. 2. If the universal clamp is not on the correct side of the actuator, move it to the correct side for ease of installation. 3.
Installation Instructions K7-2 Universal Clamp M40024 - 05/10 - Subject to change. © Belimo Aircontrols (USA), Inc.
Installation Instructions Mechanical Installation Determining Torque Loading and Actuator Sizing Mechanical Operation Damper torque loadings, used in selecting the correct size actuator, should be provided by the damper manufacturer. If this information is not available, the following general selection guidelines can be used. The actuator is mounted directly to a damper shaft up to 1.05” in diameter by means of its universal clamp.
Installation Instructions Mechanical Installation 4. 5. 6. 7. 8. 9. universal clamp. If you are mounting the actuator with the “CCW” side out, position the clamp so that the pointer section of the tab is pointing to 0° (see Figure C) and the spline pattern of the clamp mates with spline of the actuator. Slip the clamp over the spline. (Use the same procedure if the “CW” side is out.
Installation Instructions Mechanical Installation Rotation Limitation The angle of rotation limiter, which is built into the actuator, is used in conjunction with the tab on the universal clamp or IND-AFB position indicator. In order to function properly, the clamp or indicator must be mounted correctly. See Figure A. The rotation limiter may not work in certain mounting orientations using the ZG-118 mounting bracket. Limiting the damper rotation must be accomplished by adjusting the crank arm linkage.
Installation Instructions Mechanical Installation Manual Override Auxiliary Switches The NFB, NFXX series actuators can be manually positioned to ease installation or for emergency positioning. The NFB, NFX series actuators may be ordered with 2 built-in SPDT auxiliary switches used for safety interfacing or signaling, for example, for fan start-up. The switch position near the fail-safe position is fixed at 10°. The other is adjustable between 10° and 90° of rotation.
Installation Instructions Non-Direct Mounting Methods KH AFB Crank KH-AFB C k arm Including Retaining Ring CAUTION:: The retaining clip supplied with the clamp is nott used to mount the KH-AFB crank arm. The KH-AFB crank arm is used in non-direct coupled mounting applications. The KH-AFB may also be used to simultaneously direct couple to a damper shaft and provide an additional crank arm connection to a second damper.
Installation Instructions Electrical Operation General Control Accuracy and Stability The NFB, NFX series actuators utilize both DC Motors and brushless DC motor technology. The NFB, NFX uses this motor in conjunction with an Application Specific Integrated Circuit (ASIC). In the On/Off versions of the NFB and NFX, the ASIC monitors and controls the actuator’s rotation and a digital rotation sensing function to prevent damage to the actuator.
Installation Instructions General Wiring Instructions WARNING The wiring technician must be trained and experienced with electronic circuits. Disconnect power supply before attempting any wiring connections or changes. Make all connections in accordance with wiring diagrams and follow all applicable local and national codes. Provide disconnect and overload protection as required. Use copper, twisted pair, conductors only.
Startup and Checkout Instructions For NFB24-MFT, NFX24-MFT + P-100… NFB24-MFT, NFX24-MFT + P-100… Electrical Check-Out Procedure STEP Expected Response Does Not Give Expected Response Go To Step… Gives Expected Response Go To Step… 1. Control signal is applied to actuator. Actuator will move to its “Control Signal” position. Actuator operates properly Step 7. No response at all Step 2. Operation is reversed Step 3. Does not drive toward "Control Signal Position" Step 4. 2. Check power wiring.