Belimo Tech Support: Frequently Asked Questions

At Belimo, we take pride in delivering precision-engineered actuators, valves, and sensors that set HVAC industry standards for reliability and quality. However, we recognize that even the best products come with occasional questions, and our commitment to exceptional customer support ensures that you receive prompt and accurate answers. Here, we've compiled the most frequent inquiries our tech support, field support, and inside sales teams encounter, along with clear and practical answers. Whether you're seeking details about actuator installations, valve applications, sensor functionality, or our advanced Energy Valves, this FAQ section is designed to quickly connect you with the insights you need to keep your project running smoothly.

If you have further questions or need additional information, don't hesitate to contact our tech support team. We're always here to help.

Actuators

1. Can dual AF actuators on the same shaft be wired parallel?
2. Can the new AFB24-SR actuator replace an older dual-mounted AF24-SR actuator?
3. Is there a difference in functionality between the AFB24-MFT and AFB24-MFT-X1?
4. Can NFB and AFB actuators accept S2A-F US auxiliary switches?
5. Can an AFX24-MFT95 be reprogrammed with the PC Tool?
6. Can the PR actuator be mounted upside-down when used inside or outside?
7. How can PR series actuators be programmed?
8. Can an S1A or S2A auxiliary switch be mounted under the cover of NEMA 4 actuators?
9. Are heaters for Belimo NEMA 4 actuators available for individual sale or field installation?
10. How should outdoor, vertically mounted NEMA 4-rated actuators be installed?
11. Is there a weather shield available for the TR actuator?
12. Do spring return actuators have an optional terminal strip?
13. Is there a Belimo equivalent for Honeywell Sylk-enabled actuators?
14. Are factory-installed cables on airside actuators field-replaceable?

• No, dual AF actuators on the same shaft should NOT be wired parallel.

• No, the new-generation SR actuators have removed primary and secondary capabilities, so the AFB24-SR cannot replace the older dual-mounted AF24-SR.

• No, there is no difference in functionality between these two models. The only difference is that the AFB24-MFT-X1 has a linkage and is designed to pair with a valve.

• Yes, they can.

• No, it cannot be reprogrammed with the PC Tool.

• The PR can be mounted upside-down if installed inside with no condensation present. It cannot be mounted upside-down if installed outside.

• They can be programmed with NFC, the PC Tool, or the ZTH Tool.

• Yes, for non-spring and electronic fail-safe NEMA 4 actuators. No, for spring return NEMA 4 actuators.

• No, they are not available for individual sale or field installation.

• They can be installed with the conduit fittings pointing towards the ground, 9 o’clock position, or 3 o’clock position. They should NOT be installed with the conduit fittings pointing skyward.

• No, there is no weather shield available for the TR actuator.

• No, they do not.

• No, there is no equivalent Belimo equivalent for Honeywell Sylk-enabled actuators.

• No, they are not field-replaceable.

Fire & Smoke Damper Actuators

1. Do Fire and Smoke (FS) actuators come with plenum-rated cables?
2. Do Fire and Smoke (FS) actuators require maintenance?
3. Can Fire and Smoke (FS) actuators be mounted on valves?
4. What is the rating of Fire and Smoke (FS) actuators?

• No, they do not.

• No, they never require maintenance.

• No, they should never be mounted on valves.

• They are NEMA 1/IP40 rated.

Sensors & Meters

1. Are Belimo flow meters rated for use in wastewater treatment applications?
2. Are Belimo flow meters rated for use in potable water?
3. Are Belimo flow meters factory calibrated?

• No, they are not rated for use in wastewater treatment applications.

• No, they are not rated for potable water.

• They are wet-calibrated from the factory to ensure accuracy.

RetroFIT+

1. Does Belimo have universal butterfly valve retrofit kits?
2. Does Belimo have universal globe valve retrofit kits?
3. Can the Belimo UGVL linkage be used on both new and old-style Belimo globe valves?
4. Should an SGVL linkage be used to retrofit current Belimo globe valves?
5. Do FGVL linkages work on Belimo flanged globe valves?
6. Does Belimo have universal ball valve retrofit kits?
7. Can universal linkages for Belimo linear valve actuators be purchased separately?

• No, we do not.

• Yes, we do.

• No, it cannot.

• No, it should not be used.

• Yes, they do.

• No, we do not.

• Yes, they can.

Valves

1. How should steam valves be piped?
2. What does Cv mean?
3. Can the B port on a three-way valve be capped to convert it to a two-way valve?
4. Should the characterizing disc in a Belimo CCV be removed in the field?
5. Does Belimo sell a NEMA 4 option for a threaded globe valve?
6. Does Belimo sell repack kits for flanged globe valves?
7. Does Belimo offer a solution for a NEMA 4 flanged globe valve?
8. Does Belimo sell weather shields for use on the DRCX/DKR?
9. Does Belimo provide special order modulating actuators for 3-way ZoneTight valves?
10. What Cv rating should be used to select a butterfly valve for modulating service?
11. Are SY actuators for the new L series butterfly valves?
12. Can feedback potentiometers be installed in the field on SY actuators?
13. Does Belimo sell Victaulic butterfly valves with manual handles?
14. Are Belimo VS ball valves WOG (water, oil, gas) rated?
15. Can VSS ball valves be used for potable water applications?

• Steam valves should always be piped in horizontal piping.

• Cv is a valve’s flow rating, indicating how many gallons per minute (GPM) of water at 60°F can flow through the valve with a 1 psi pressure drop.

• No, a three-way valve cannot be capped to convert it to a two-way valve.

• No, the disc is not designed to be removed at all.

• No, we do not.

• Yes, we do.

• No, we do not.

• No, but there are NEMA 4X versions of the DRCX/DKR available.

• No, we do not.

• Use a 60 Cv rating.

• No, SY actuators are for HD series butterfly valves. L series butterfly valves use JR and PR actuators.

• No, they cannot.

• No, we do not.

• Yes, they are.

• Yes, they can.

Energy Valve

1. What usernames can be used to log into the Energy Valve dashboard?
2. What sizes are available for the Belimo Energy Valve 4 (EV4)?
3. Does the Belimo Energy Valve need to be installed on the system's return piping?
4. Did EV3 require a section of straight pipe on the valve inlet to achieve flow accuracy?
5. Does the EV4 require a section of straight pipe on the valve inlet to achieve flow accuracy?
6. Is there a requirement for a section of straight pipe on the outlet side of the EV3/EV4?
7. What modes on the Energy Valve will achieve pressure-independent valve performance?
8. Do the Energy Valve, EPIV, and Thermal Energy Meter need to be recalibrated?
9. Does Belimo offer weather shields for the 4th generation EV/EPIV?
10. Can the EV operate without a control system?
11. What is required when installing an Energy Valve on an MS/TP network?
12. What flow characteristic does the Energy Valve follow by default?
13. What is the flow feedback (U5) value scale for the EPIV and Energy Valve based on?

• guest, maintenance, admin (all lowercase)

• ½”, ¾”, 1”, 1.25”, 1.5”, 2”

• No, it does not.

• Yes, it required a section of straight pipe with a diameter 5 times the valve size.

• No, a section of straight pipe is not required on the valve inlet of the EV4 to achieve flow accuracy.

• No, there is no such requirement.

• Flow Control and Power Control modes.

• No, they are wet-calibrated from the factory and do not need recalibration.

• We do not offer weather shields for the 4th generation EV/EPIV. However, we provide NEMA 4 rated versions of these assemblies, which offer superior protection compared to weather shields.

• Yes, it can.

• A 120-ohm end-of-line resistor must be installed.

• It follows an equal percentage flow characteristic.

• It is based on V’max.

Belimo Download Center

1. Where can CAD drawings for Belimo products be found?
2. Where can installation instructions and product documentation be found?

• They can be found at the Belimo Download Center.

• They can be found at the Belimo Download Center.