Belimo LMB24-3-T 3 wire motor (BH Kit 1) Retrofit Kit to Replace Honeywell M847D motor - Normally Same Day Shipping -

I don't often write reviews, but this item has been operating so well that I am compelled to do so. For context, I have tried different brands before; they are all very noisy. I have a contractor who charged me $1200 but failed to do the job. This one is easy to install and extremely quiet. I cannot be happier!

What a difference these make. The Honeywell actuators this replaced have nowhere near the torque these things do.Relatively simple install, seller provides very thorough instructions.Hooked mine into a Honeywell TrueZone system without issue.I dont know if you are supposed to or not, but I used the smaller set screws this came with instead of the long screws. Seems to work just fine.Be aware these are basically industrial grade and WILL turn whatever it is hooked to so make sure the actuator is mounted straight.Note that if you are used to the Honeywell actuators, they tend to cycle within 10-15 seconds. These bad boys take a full 90 seconds so just make sure you wait long enough for the panel to cycle any sort of purge out and then begin actuation.Build quality is extremely high. I thought it was kind of expensive for what it is supposed to do but now I see why. It is built like a tank and will withstand years of hard use.These are designed for 3 wire Power On/Power Close style boards, however there are included wiring instructions to adapt them to 2 wire systems, so bonus there as well.The only downside to these is if they ever lose power/short out for whatever reason, they will not "spring open" like the honeywell actuators do. However unlikely, it is possible to have a fully functioning furnace but the damper be closed. This can be overridden by manually releasing the clutch (big black button) and turning it by hand, but of course that requires you to get up in the attic/go down in the dungeon to do.overall 5/5 would buy again for future damper actuation needs

Purchased these actuators to complement a new ECOJAY 4 Zone Controller. Easy replacement of original Honeywell parts and far superior in dependability and performance compared to the Honeywell originals. ECOJAY has provided excellent setup support for the complete system - both the Zone Controller and the Damper Actuators.The Belimo 3 wire motor provides an inexpensive swap for old Honeywell spring type 2 wire actuators. I installed on outlet zones and one zone for top floor inlet register to control convection in a 3 zone system. It works great, positive on & off control is far superior to the spring type one way Honeywell actuators.One downside it the adapter sleeve which connects the motor to the damper axle. The adapter has larger ID than the OD of the original Honeywell damper axles. I worry that the locking setscrew will loosen with time - I check the function every 3-6 months to make certain that the motor-damper connection is secure.

These work great once I figured it out. Instructions not professionally written but I finally got how to control and set the travel limits. You have to run an extra wire to the control panel but that was not a big problem because the damper I was working on was close by. The next one I want to replace is two floors up so pulling the extra wire may be a challenge. After 3 months still working fine.Update 1.5 years still working great. Just replaced 2 more Honeywell controllers with the Belimo motors. Like night and day. Love the quality. I can install one in 15 minutes now. Highly recommend changing out your old spring controller with a new Belimo. I saved thousands doing it myself and I have never done this work before.

This is a convenient kit to replace a Honeywell with a Belimo motor. The adaptor coupling works, but it is an unusual inside diameter. Perhaps to accomodate other brand shaft sizes or to more easily fit over shaft if it has imperfections. I am trying a different adaptor next time as an experiment.

I just installed this; it was pretty straight-forward, except for one snag, which resulted in a bit of wasted time: after following the supplied directions exactly, the damper was doing the opposite of what it should have been doing - it opened when it should have closed, and it closed when it should have opened. The markings on the unit are incomprehensible, the supplied documentation was not helpful in solving this problem, a call to Retrozone required that I leave a message, and I received no call back in a couple of hours of waiting.It took quite a bit of web searching to figure out that the rotating "0" / "1" switch reverses the open/closed direction (I suspected as much but didn't want to risk damaging the unit by experimenting).Everything else went smoothly, and the unit is now working well.

Easy instructions and direct swap. I have a zone splitting panel and was able to run a single wire from an unused zone to get power to the motor for it to work. Get your self a tech screwdriver or micro screw driver for the terminals.

I bought these to replace my zone dampers (Honeywell part number M847D1004/U or M847D) when they stopped working. The part that usually breaks on the damper motor is the spring. This motor doesn't use a spring, so it should last longer than the original motor.However, it does require more wiring than the additional motor, so make sure it's in an accessible space like a crawlspace, attic, or closet. This motor does come with clear directions for the wiring.Make sure to check damper operation when you're done. If it operates backwards (closes when it should open) take a screwdriver and rotate the black switch from "0" to "1."