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Help CenterHoneywell FC-FANWR-24R — 24V Fan Relay Module for Fan Coil Control
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The Honeywell FC-FANWR-24R is a compact 24 VAC relay module designed to control fan motors in fan-coil and small HVAC zone applications. It’s typically used where a reliable, low-voltage relay is needed to switch fan stages or signal auxiliary equipment—think retrofit fan-coil upgrades, local zone control panels, or simple BMS interface points. From my experience, it seems to be a straightforward spare-part replacement that reduces wiring complexity for installers.
Key Features24 VAC coil operation — Designed to be driven directly from standard HVAC 24 VAC control circuits, which simplifies integration with thermostats and zone controllers.
Relay outputs for fan stages — SPDT switching for on/off or multi-speed fan control; in many cases supports multiple stage configurations when wired appropriately.
Compact, panel-friendly form — Small footprint that fits inside control cabinets or fan-coil enclosures without major rework.
Simple hardwired interface — No field programming required; installers usually wire control inputs and load outputs directly.
Robust contact rating (typical) — Suited for common motor-start circuits and accessories; useful for staging multiple fans or auxiliary devices.
| Brand / Model | Honeywell — FC-FANWR-24R |
| Power Requirements | 24 VAC control input (nominal). Typical coil draw low; verify full datasheet for exact mA values. |
| Signal Input / Output | Input: 24 VAC control or dry contact; Output: SPDT relay contacts suitable for fan motors/aux loads (check local code and motor inrush requirements). |
| Communication Interfaces | No digital fieldbus — hardwired relay control only (straightforward for legacy systems). |
| Operating Temperature | Typical industrial range (approx. -10°C to +60°C). Confirm with datasheet for extreme environments. |
| Dimensions & Weight | Compact module designed for panel or enclosure mounting. Dimensions vary by enclosure style — request datasheet for exact cutout and weight. |
| Installation Method | Panel or cabinet mounting. Typical wiring via screw terminals. Suitable for retrofit into fan-coil cabinets or control panels. |
The FC-FANWR-24R is typically deployed in commercial and light-industrial HVAC zones: fan-coil units in hotels and apartments, small rooftop or packaged units, retrofit projects where legacy thermostats are replaced, and local control panels that need reliable stage switching. One common use case I see is replacing aging relays in modular fan-coil units where space and wiring simplicity matter.
Compatibility with existing 24 VAC systems — minimizes redesign and training for technicians.
Reliable mechanical switching — in many cases more tolerant of voltage spikes and simple to troubleshoot than solid-state alternatives.
Cost-effective spare/retrofit option — typically cheaper and faster to install than full controller replacements.
Serviceability — replaceable module approach reduces downtime for field repairs; from my experience, installers appreciate the predictable failure modes.
Basic installation best practices usually apply: mount inside a ventilated control cabinet (IP20 or better) away from heavy vibration and corrosive atmospheres. Use properly sized wiring (14–22 AWG depending on current) and torque terminals per the datasheet. One thing I appreciate is how quickly the module can be swapped during a service call — just isolate control power, unlatch wiring, and replace.
Safety: always follow lock-out/tag-out and isolate 24 VAC control power before wiring.
Routine: inspect terminals and mounting every 6–12 months; check for contact wear, burning, or chattering under load.
Firmware/Calibration: none typically required for a relay-only module; check electrical connections and coil voltage periodically.
Honeywell products in this family typically carry CE and RoHS markings and meet common regional safety standards. UL/cUL recognition may apply depending on region and specific variant. Manufacturer’s limited warranty is commonly provided (typically 1 year), though exact terms depend on the product batch and sales channel—confirm with the supplier for project procurement.
A field technician I worked with recently swapped an FC-FANWR-24R into a hotel fan-coil bank and noted noticeably reduced troubleshooting time compared with an electronic module. You might notice the relay hum slightly under certain loads; this is normal in many mechanical relays and doesn’t affect performance. If you have high inrush motor loads, consider assessing motor starters or inrush mitigation first.
For precise mechanical drawings, terminal assignments, and the latest electrical ratings, request the official Honeywell datasheet for FC-FANWR-24R. I can also help confirm compatibility with your panel wiring or provide a quick checklist for field technicians.
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