Topics
Technical Support
USA/LATIN AMERICA
800-543-9038 technicalsupport@us.belimo.com
CANADA
866-805-7089 technicalsupport@ca.belimo.com
BRAZIL
+55 11 3643 5656 suportetecnico@br.belimo.com
Damper Actuator
- How do I manually override my actuator?
- What is the difference between a spring return, non-spring return, and electronic fail-safe actuator? What are the advantages and applications for each?
- what is difference between modulating damper and open/ close damper actuator
- How do I size a damper actuator?
- Can a 2-10 VDC feedback signal be converted to 4-20mA by use of a 500 ohm resistor?
Control Valve
- What is CV and why is it important for a modulating valve? How do I calculate it?
- How do I manually override my actuator?
- What is the difference between a spring return, non-spring return, and electronic fail-safe actuator? What are the advantages and applications for each?
- What is valve close off pressure? What is body pressure rating?
- What valves can I use for steam applications?
Accessories
- Can a 2-10 VDC feedback signal be converted to 4-20mA by use of a 500 ohm resistor?
- Should I use a diode for floating control actuators?
- Does Belimo offer a NEMA 4 parts kit?
- Is a weather shield or NEMA 4 actuator design available for Energy Valves?
- Can the S2A-F auxilary switch be used with non-fire and smoke actuators?
Retrofit
MFT (Product)
- I want to reprogram my MFT actuator. What equipment & instructions do I need?
- What do the lights on the MFT actuator mean?
- How do I troubleshoot my modulating SY actuator?
- Can a –SR or MFT modulating actuator be field wired for On/Off or 2-position control?
- What is the purpose of the adaptation button on your MFT and some –SR actuators?
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...
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 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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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 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...
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...
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...
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...
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. Link to 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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
What is the close off pressure for the zone valve series?
Close off pressure in the basic zone valve product line is dependent on Cv. For example the 1/2" model with Cv = 1 is 75psi close-off, the 1" 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...
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...
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...
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...
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...
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...
Can a -3 actuator be used for on/off control?
Non-spring return -3 actuators can be wired for on/off control with a SPST contact. Spring return -3 actuators should only be used for floating point 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...
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...
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...
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...
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...
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...
Do you make a replacement globe valve actuator for other brands?
To view replacement globe valve actuators for other brands open the Retrofit Module within SelectPro. Click the Valve button and select Valve 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 replace a failed actuator on a CCV?
Today’s CCV’s have actuators with an integrated rotary linkage. The “R” in the actuator part number (such as AFR or LR) 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...
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 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 does a pressure independent valve work in a variable volume hydronic system?
A variable volume hydronic system has a VFD on the pump and the response time of the VFD is relatively slow in response to changes in system pressure. The Read more...
Do you have spring return actuators?
Yes, we have spring return actuators for control dampers and valves. Belimo spring return actuators are designed for use in a wide variety of HVAC 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...
What weather shield can I use with a globe valve?
Model ZS-SP(GV)... series weather shields are designed as a water tight enclosure to provides moderate protection when mounted outdoors for globe valve 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...
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...
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...
Is there a damper or valve actuator that is acceptable for outside installations?
Belimo offers factory furnished NEMA 4/4X damper and valve actuator enclosures for most spring return and non-spring return actuators. To learn more 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 are the recommended fluid velocity limit for butterfly valves? Is there a fluid velocity chart?
HDU/HD/L Series: It is not recommended to exceed 12 feet per second through resilient seat butterfly valves. Velocities greater than 12 fps may 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 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...
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...
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 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...
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...
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...
What are the configuration options and codes for HDU/HD/L and Victaulic series 3-way butterfly valves?
The HDU/HD/L and Victaulic series butterfly valves are capable of bi-directional flow. The Master Valve is always located on the run. The Read more...
How do I replace a failed CCV if my actuator is still working?
There are no serviceable parts or repacking kits for CCV's so if they fail they will need to be replaced. If the failed valve is the older style Read more...
What does the FC stand for on a fire and smoke actuator with an FC suffix?
Models with FC included in the part number are provided with a 3/8" screw flex connector rather than the standard 1/2" conduit connector and 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...
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 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...
Do electronic fail-safe actuators come with a fully charged capacitor?
Actuators with super capacitors are discharged at the factory for shipping and storage purposes. To obtain fail-safe functionality apply power to Read more...
Is there maintenance for motorized fire & smoke dampers?
There is no maintenance required. No cycling of the actuator is required although dampers should be tested per local codes. Refer to the below schedule of Read more...
Can the Energy Valve be used with VFDs
The Energy Valve, or ePIV, complements the performance of variable flow hydronic systems utilizing variable frequency drive (VFD) pumps. The Energy Read more...
Would there be imbalance when the damper shaft is smaller than the diameter of the actuator clamp?
Belimo damper actuators are designed for mounting to a range of drive shaft diameters and will be “centered” with a published diameter. Read more...
How do I retrofit my Air Balance pneumatic damper?
For an instruction sheet on replacing Air Balance pneumatic actuators with Belimo FSxx Series fire & smoke actuators see attached. For general Read more...
Do you fabricate custom linkages for butterfly, globe, or ball valves?
The Belimo factory includes a machine shop where custom linkages are fabricated. Complete the appropriate form for valve type: butterfly valve, Read more...
Do you sell replacement UGLK rotary linkages for flanged globe valves?
Belimo does continue to manufacture the rack and pinion style UGLK linkages for 2.5-6 inch two and three-way flanged globe valves. See attached 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...
What is the flow pattern and correct piping for your flanged globe valves?
Globe valves are flow direction specific and have visual arrows on the valve body indicating an inlet or outlet port. Two-way valves have a Read more...
What sensor is best suited to determine building occupancy: CO2 or VOC?
CO2 is the best sensor to determine occupancy because the reading is directly proportional to the CO2 emitted by humans as they breathe. Low levels of CO2 Read more...
Why is Belimo's CO2 sensor dual-channel technology better than CO2 sensors using ABC logic to compensate for sensor drift?
Dual-channel (also called dual-beam) technology is self-calibrating by using two infrared beams (NDIR). One reference beam is only activated during 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...
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 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...
Since the Energy Valve controls the actuator what does the DDC controller do?
The DDC controller's 2-10 VDC output signal is normally the flow setting of the Energy Valve from zero flow (2 VDC) to maximum flow (10 VDC = V' 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 have BACnet compatible ZoneTight actuators
Currently Belimo Americas does not offer a BACnet compatible actuator in the Zonetight valve series. Read more...
What is the NEMA Rating on Belimo Flow Meters?
Belimo FM series ultrasonic flow meters are rated to UL Type 1, NEMA 1. Enclosures classified as NEMA 1 are intended for indoor use and provide some 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...