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Technical Support

USA/LATIN AMERICA

800-543-9038 technicalsupport@us.belimo.com

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866-805-7089 technicalsupport@ca.belimo.com

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+55 11 3643 5656 suportetecnico@br.belimo.com

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Damper Actuator

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MFT (Product)

What is CV and why is it important for a modulating valve? How do I calculate it?
Cv is the capacity of the valve to deliver flow with an available differential pressure (∆P) across the valve. The Engineer of Record typically specifies Read more...
What is the difference between a spring return, non-spring return, and electronic fail-safe actuator? What are the advantages and applications for each?
Spring Return actuators utilize an internal spring that drives the actuator open or closed on loss of power. Electronic Fail-safe actuators utilize super Read more...
How do I manually override my actuator?
All EF, AF and NF series spring return actuators, and FSAF and FSAFB fire and smoke actuators, have a detachable manual override crank tool that fits Read more...
What is the difference between NTC 10K Type 2 and Type 3 sensors?
At 77ºF, 10K ohms is the signal for both NTC 10K Type 2 and Type 3 sensors, but the values are somewhat different for other temperatures per the Read more...
Do all control valves get piped from the return side of coils?
The standard installation practice to safeguard electric actuator longevity is to reduce exposure to external water and excessive ambient heat.  Read more...
How do I size a damper actuator?
The "10 questions" method for sizing and selection found in the attachment is recommended.  It takes into consideration the total Read more...
What valves can I use for steam applications?
Maximum inlet pressure along with maximum differential pressure and steam temperature are the most important considerations when selecting a valve Read more...
For temperature sensors, do you have a resistance (ohms) to temperature table?
See the table below for typical ohms per temperature for NTC and RTD signal types.  Read more...
How small can a valve be compared to line size?
The golden rule is never reduce the valve smaller than half the line size.  When a smaller valve than the pipe size is installed, pipe reducers have Read more...
I want to reprogram my MFT actuator. What equipment & instructions do I need?
There are two ways off programming an MFT actuator.  You can use the ZTH US handheld device and using one of the provided cables you can connect to Read more...
Can your 3-way valves be used for mixing and diverting?
CCV and HD/HDU/VIC butterfly valves can be piped for mixing or diverting. Globe valves have 2 separate mixing and diverting valve bodies and cannot be Read more...
What is the replacement for my NF120 US or AF120 US actuator?
The NF/AF series 120 VAC on-off actuators are functionally replaced with the NFBUP and AFBUP in all damper applications and in valve applications using Read more...
Can I change my spring return damper actuator from fail closed to fail open?
All Belimo spring return actuators can be mounted to fail open or to fail closed upon loss of power based on how the actuator is mounted on the damper Read more...
Are there issues installing stainless steel body valves in a carbon steel piping system?
The Engineer of Record should make decisions regarding valve and pipe material compatibility and the application of dielectric unions.  The Read more...
Can a –SR or MFT modulating actuator be field wired for On/Off or 2-position control?
All of the -SR and -MFT models (when programmed to 2-10 or 0-10 VDC) (with the exception of the SY, PR, and PKR Series) can be wired for On/Off or 2- Read more...
What is a characterized control valve (CCV)?
Belimo’s unique Characterized Control Valve™ (CCV) have a special characterizing disc inside the A port of the valve which gives it an equal Read more...
What does Master-Slave wiring mean and when would I use it?
This wiring method is preferred for piggyback applications where actuators are mechanically coupled to a single shaft or linkage. Master-Slave wiring must Read more...
What do the lights on the MFT actuator mean?
MFT actuator series non-spring return and electronic fail-safe include LED's, spring return series MFT actuators are not offered with LED's. Non- Read more...
What is the flow pattern and correct piping for a CCV?
Two and 3-way CCV's  have the characterizing disc on the A port.  The B port is also characterized on 3-way CCV's.  Three-way Read more...
Can I mount my actuator up-side-down?
Actuator can be mounted in any orientation when mounted onto a damper. When an actuator is mounted on a valve the actuator should not be mounted below Read more...
How do I troubleshoot my modulating SY actuator?
See attached guide for basic troubleshooting steps if you are experiencing issues with your SY series MFT actuator.  Contact Belimo Technical Support Read more...
Does Belimo offer NEMA 7/9 Div 1&2 actuators and valve assemblies?
Belimo offers an explosion-proof housing for damper applications only.  For additional information see attached datasheet. The ZS-260 explosion-proof Read more...
Do you make replacement actuators for obsolete Belimo actuators or other brands?
To view replacement actuators for obsolete Belimo actuators or other brands open the Retrofit Module within SelectPro.  Click the Damper or Valve Read more...
How can I update my PC-TOOL software?
The latest update to PC-TOOL, our MFT programming software, can be found under the Multi-Function Technology tab on most of our actuator webpages. For PC- Read more...
How do I parallel wire multiple actuators?
As long as the dampers or valves are not mechanically linked the modulating actuators can be wired in parallel as shown in the attached diagrams.  Read more...
How can I mount a damper actuator on a CCV or small butterfly valve?
Only spring return damper actuators can be field mounted on CCV's, or butterfly valves 3 inch and under, with rotary linkage kits purchased Read more...
What information is needed to select a control valve?
Basic required application information Full flow GPM (or steam lbs/hr capacity)With pressure independent (PI) valves, only the full flow GPM is Read more...
What is the purpose of the adaptation button on your MFT and some –SR actuators?
Depending on the actuator, adaptation is initiated by one of the following a) Pressing the manual override button twice b) clicking the CW/CCW switch Read more...
Does Belimo offer a NEMA 4 parts kit?
Belimo actuators do not come with the option of purchasing a field installed parts kit to convert the standard NEMA 1 or 2 enclosure to a NEMA 4 or 4X Read more...
What is Pressure Independent (PI) valve technology?
PI valves are dynamically balanced delivering the proper flow to the coil over any operating load condition. Overflow and underflow are eliminated Read more...
Can I mechanically connect or tandem mount more than one actuator on a damper or valve?
YES. This is sometimes referred to as ‘piggy-back’. The preferred method for mechanically linked actuators would be through the use of MFT Read more...
How do I adjust the open and close for FSLF actuator?
The FSLF actuator does not have an external stroke limiting capability. The limit of the stroke if <95 degrees would be dependent on the range of the Read more...
Why does the damper close with loss of power?
Belimo spring return, and electronic fail-safe actuators, are designed to fail open or closed when power is interrupted. Power loss unwinds the Read more...
What Belimo valves have linear flow characteristics?
The B3L series ball valves are modified linear, and the G2S & G3 globe valves are linear.  Also, the Belimo Energy Valves and ePIV' Read more...
How do I limit damper rotation to less than 90 degrees?
Rotation can be limited in two ways, mechanically or electronically. To limit the stroke mechanically, an angle of rotation limiter will need to be Read more...
Can you cross over a non Belimo valve to Belimo?
There are many technical aspects of valve performance to consider when replacing another manufacturer’s valve with a Belimo valve.  Valve type, Read more...
How do I determine torque for a pneumatic actuator?
Pneumatic actuators usually produce a linear force; in order to determine the equivalent torque, the linkage minimum effective radius and the Read more...
Are Belimo valves and actuators serviceable? How do I obtain replacement parts?
There are no serviceable parts or repacking kits for CCV's or butterfly valves so if they fail they will need to be replaced.  Similarly, Read more...
I am having problems with my SY actuator. What should I do?
Non -MFT Models: SY products without the MFT on the nomenclature are only used for on/off or floating point applications.  They are only going to use Read more...
Do you sell repacking or rebuild kits for your globe valves?
Repacking kits are available for all Belimo globe valves and rebuild kits are available for flanged globe valves.  Click here for details Read more...
Do you have linkage installation instructions for 3-way butterfly valve and SY actuator?
Reference butterfly valve technical document to find installation instructions, actuator wiring, and troubleshooting information.  To install 3-way, Read more...
How do I set up my Cambridgeport or Carrier economizer?
Click here for installation videos and documentation. For technical support questions that may arise regarding the Belimo Zip Read more...
What is the difference between fast running and quick running actuators? How can I tell the difference?
The non-spring return actuator product nomenclature includes the letter Q for quick running and C for fast running following the actuator torque letters. Read more...
Should I use a diode for floating control actuators?
Floating control actuators with ...-3 part number do not need a diode but actuators with ...-MFT part number may need a diode. Most but not all Belimo MFT Read more...
How do I install my Belimo UGVL retrofit linkage?
Belimo's adjustable UGVL retrofit linkage fits on most ½" to 2" Globe Valves offering quick and easy installation. Refer to the 2017 Read more...
What weather shield or NEMA 4 enclosure can I use on a large flanged CCV?
Belimo offers a NEMA 4 enclosure option on Large (Flanged) Characterized Characterized Control Valve (LGCCV) assemblies per below table:     Read more...
I cannot mount my actuator on the damper shaft. What are my options?
See the Belimo Mounting Methods Guide section 3 for different ways to non-direct couple damper actuators.  Some of the linkage and actuator part Read more...
How do I foot mount my AF series damper actuator?
A ZG-118 universal mounting bracket or ZG-AFB118 crank arm adapter kit is needed to foot mount a new generation AFB/AFX, NFB/NFX, or FSAFB24-SR damper Read more...
Can I remove or replace my actuator cable?
Cables are installed at the factory and cannot be changed or reattached in the field.  The standard cable length is 3 feet but most actuator can be Read more...
What does Position Control mean for ePIV and Energy Valve, is Valve Position a feedback option?
“Position Control” is a configurable control mode for ePIV or Energy Valves. The other option is “Flow Control”  (i.e. Read more...
Where can I find more information on your Multi-Function Technology (MFT) actuators?
There is a Multi-Function Technology tab on most of our actuator webpages. Under this tab you will find resources such as technical documentation, Read more...
Is ZoneTight QCV & PIQCV available?
Belimo's new pressure dependent QCV and pressure independent PIQCV zone valve offering is now available. The ultra-compact QCV leads the way in Read more...
What is the difference between a RTD and a Thermistor?
An RTD (Resistive Temperature Device) is made of metal such as Platinum (PT) or Nickle (Ni).  As temperature increases the resistance measured in Read more...
Why are isolation relays required for 2 position SY actuators wired in parallel?
The reason parallel applications need isolation relays is that the motor uses two sets of windings, one for each direction. When one is energized to turn Read more...
Do you have flow curves for your CCV valves?
Belimo characterized control valves (CCV) have an equal percentage flow characteristic as shown below.  To obtain a CCV flow curve for a specific Read more...
Is a balancing valve required when using an energy valve or PIV?
Belimo pressure independent valve (PIV) offerings include electronic pressure independent series (Energy Valve and ePIV) and mechanical pressure Read more...
Is a weather shield or NEMA 4 actuator design available for Energy Valves?
Several sizes of weather shields are available but at this time a NEMA 4 actuator is not available. For more info specifics on Energy Valve Read more...
What weather shields can I use with a threaded CCV/PICCV series valves?
Model ZS-CCV... series weather shields are designed as a water tight enclosure to provides moderate protection when mounted outdoors for Characterized Read more...
What is the meaning of the date code?
Currently the date code is printed on the actuator sticker.  Many valves are also date coded using a metal tag or sticker. Current Date Code Format Read more...
What actuator can I use for 135 ohm control?
Belimo offers several actuators with 135 ohm control suitable for Honeywell Series 90 controllers.  The products must have MFT95 in their Read more...
Does the ePIV actuator Direction of Rotation switch work?
On all ePIV actuators the direction of rotation can only be changed using the PC-Tool.  The dial usually associated with switching the “ Read more...
Can the MFT actuators accomplish floating point control? Or do I need an actuator that specifically does floating point like the LMB24-3-P10-T?
Most MFT models can be programmed for Floating control.  This is common when a feedback signal or future field program changes are desired.  Read more...
How do I mount an actuator on a damper shaft?
Click here to watch the YouTube video on how to properly attach an actuator to a damper assembly and apply pre-tension to the assembly. This will provide Read more...
What replaces obsolete BLF24 & BLF230 European Fire & Smoke Actuators
The BLF series fire and smoke actuator series has been discontinued. The BFN series is the new replacement. Model cross reference below with details and Read more...
Can I add a switch to my butterfly valve actuator?
SY actuators come standard with two integral switches and AFR series spring return actuators can be purchased with the –S option which has two built- Read more...
Should steam valves be piped vertical or horizontal?
Steam valves should always be installed on a horizontal steam line, never vertically.  A control valve in a vertical installation has no ability to Read more...
How do I wire more than one actuator to the Zip economizer?
The ZIP Economizer installed on a Rooftop Unit (RTU) having more than one damper which is not mechanically linked, can drive a maximum of three Belimo -SR Read more...
Does Belimo make an economizer solution?
The ZIP Economizer has been developed to allow for easy user interaction when setting up or troubleshooting Economizer systems and RTUs. The ZIP Read more...
Where can I get information on Belimo hand held programming devices?
To view information on Belimo hand-held programming devices use the Multi-Function Technology tab found on most actuator webpages or click here. Read more...
What are the most important code issues for Fire & Smoke actuator replacement?
All codes require life safety systems to be in working order and defects to be corrected. Interpretations on the details vary within different Read more...
What is recommended for actuation on the discharge of a generator where exhaust temperatures hit about 170°F?
All Belimo actuators have a storage temperature of 176°F. Since the actuator is powered to keep the damper closed when the temperature is at ambient, Read more...
Do you have a link to download the Belimo zip-usb-mp software for MFT actuators?
Click here to download the ZIP-USB-MP driver. Click here  to download a copy of the ZIP-USB-MP instructions. Read more...
What does the R and L mean in CMB24-SR-R -L
The CMB24-SR actuator receives a 2-10vdc control signal and is available in -R and -L models; indicating the “Normal” position of the Z2 & Read more...
How do I adjust flow on a PICCV valve with KRB24-3?
The KRB24-3 actuator is available on certain bodies of Pressure Independent Characterized Control Valve (PICCV) assemblies (P2050B010, P2050B025, P2050B055 Read more...
Does Belimo offer a 120V NEMA4 actuator for use on CCVs?
If a 120V NEMA4 actuator is required, an AFXUP N4 or AFXUP N4H (with heater) spring return actuator can be installed on all Belimo 2 & 3-way Read more...
Can I adjust the stroke length on a linear damper actuator?
The linear series actuators (LHB/X, AHB/X) are available in 4, 8, or 12-inch stroke. The quick-running versions LHQB/X  and AHQB/X come in 4-inch Read more...
Can your flow meters be used for potable water applications?
Belimo ultrasonic flow meters are not certified to NSF 61 for potable water use. They are designed for HVAC chilled water, hot water, and water/ Read more...
What happens to the leaving air temperature (LAT) as coil water flow is reduced with the Energy Valve Delta T Manager?
More information is needed to answer this general question, in particular, what sensor is controlling the control valve water flow?  Typically fan Read more...
Do SY actuators have auxiliary switches?
The SY series actuators have 2 built in auxiliary switches (LS3 & LS4).  These can be used to prove whether the actuator/valve is open or closed. Read more...
Can I reset the ZIP Economizer to its original Factory Settings (Virgin State)?
The ZIP Economizer can be reset to original factory setting if the software is version 2.0 or higher. This feature is not available on the original Read more...
What's the default MFT programming code for the PICCV?
The default is code A19, with parameters: 2-10VDC control signal input, 2-10VDC feedback output, and 100 second running time. To view more PICCV Read more...
Is there an extension available for CCV or PICCV valves so that actuators can get above insulation?
Belimo CCV extension kits add 2 inches to the actuator height to accommodate pipe insulation.  They also work on PICCV’s.  If the CCV Read more...
Can the S2A-F auxilary switch be used with non-fire and smoke actuators?
The S2A-F add-on switch is for use only on our fire and smoke actuator models FSAF, FSNF, and new style FSLF with top holes.  They are not intended Read more...
How many Belimo FS actuators can be placed on a single transformer or breaker?
It is unlikely that actuators would be the only load since smoke detectors and other life safety may be on the same breaker. It is wise to leave spare Read more...
How do I retrofit a globe valve with a failed NV or NVF actuator?
First, the valve size and manufacturer will be needed to determine the required linkage.  Belimo globe valves less than or equal to 2 inches Read more...
Can I use your valves for compressed air, flammable gas or potable water?
Belimo valves are designed for use in standard HVAC CHW/HW/Steam applications that adhere to the attached water quality guidelines. They are not certified Read more...
Can the humidity sensor be used in harsh environments?
When exposed to harsh environmental conditions such as; high ambient temperature and/or high levels of humidity or presence of aggressive gases (i.e. Read more...
How to retrofit Armstrong steam humidifier globe valves?
Belimo recommends replacing old pneumatic and electronic operators on Armstrong 2" and smaller steam humidifier globe valves with the following Read more...
How do I rebuild a Belimo globe valve?
If your Belimo flanged globe valve is leaking or isn't performing optimally it might be time to rebuild it. Belimo offers rebuild kits for many Read more...
How do I mount or remove my ZoneTight actuator?
ZoneTight zone valve actuators are designed to be removed or mounted to the valve body by hand with a linear upward or downward force. To mount the Read more...
Does Belimo offer an enclosure or weather shield for the high temperature HTCCV series valves?
Belimo currently does not offer an enclosure or weather shield for High Temperature Characterized Control Valve (HTCCV) series assemblies. Read more...
Why won’t my new LRB or AFRB actuator fit my existing CCV?
The most common reason why a new LRB or AFRB won’t fit an existing CCV is that the valve body is an older design and its shallower stem notch hits Read more...
Can the TR24-3 US be wired in parallel?
The TR24-3(-T) US cannot be wired in parallel due to the internal actuator circuitry.  The TR24-3(-T) US utilizes two AC Synchronous motors to drive Read more...
How are Energy Valve fault occurrences generated in the Status Tab of WebView?
The following are the EV status error causes and valve behavior: T1, T2: Temperature is below -15°F [-26°C] or above 300°F [149°C].  Read more...
Can I buy a valve body by itself?
In general, Belimo can furnish replacement valve bodies for an in-warranty failure or they can be purchased to replace an out-of-warranty failure.  Read more...
Can I slow down my SY actuator?
SY actuators whether they are on/off or MFT do not have adjustable runtimes.  The runtimes are a fixed speed based on the actuator model.  Read more...
Does the new zonetight valve come with proportional actuators?
ZoneTight valve actuator control signal options are: on/off, floating, and 2-10VDC proportional control. Two-way models with -SR designation use a 2-1 Read more...
My Belimo product is not sold in the United States. How can I replace it?
For help finding a functional replacement for Belimo products sourced outside the United States contact Technical Support at 800-543-9038. Read more...
I need a 3 position balancing damper actuator rated for Fire & Smoke?
The FSAF24-BAL US and the FSAF24-BAL-S US were balancing damper actuators but are now obsolete.  For a solution see the FAQ "How do I replace Read more...
What is the difference between the ZoneTight valve and conventional CCV valve?
ZoneTight QCV and Characterized Zone Valve (CCV) offerings are both high quality 2-way and 3-way pressure dependent valve assemblies designed for HVAC Read more...