FX1 with two speed fan?

[MVCaprice]

In our Salon we have a 220 volt two speed air handler / fan with a Honeywell thermostat.

This unit is the next on my list to upgrade to an FX control system. How have you all converted this type of system to a FX control unit? Is there a way short of replacing the air handler fan that can convert it to variable speed or am I stuck with a one speed fan setup? Another option I was considering is leaving the two speed switch in to actuate the fan speed manually. Any suggestions?

 

[krush]

FX 1 outputs variable voltage or PWM for varying speed of fan. Sounds like your air handler is two speed using relays that power different windings of the motor.

When you figure out what type of motor and the setup of your air handler, take that info and call up Tech Support at MicroAir (maker of FX1)...they may have a solution.

 

[MVCaprice]

FX 1 outputs variable voltage or PWM for varying speed of fan. Sounds like your air handler is two speed using relays that power different windings of the motor.

When you figure out what type of motor and the setup of your air handler, take that info and call up Tech Support at MicroAir (maker of FX1)...they may have a solution.

Thank Krush. I'll give them shout.

 

[Tim Powell]

FX 1 outputs variable voltage or PWM for varying speed of fan. Sounds like your air handler is two speed using relays that power different windings of the motor.

When you figure out what type of motor and the setup of your air handler, take that info and call up Tech Support at MicroAir (maker of FX1)...they may have a solution.

Krush
Gotta ask. Why not a simple reaostat from Grangers like a simple house fan. It may have 3 positions or a gradual increase. Is it the motor it is 110 correct.https://www.grainger.com/category/h...reaostat+speed+control?sst=All&ts_optout=true

 

[MVCaprice]

Krush
Gotta ask. Why not a simple reaostat from Grangers like a simple house fan. It may have 3 positions or a gradual increase. Is it the motor it is 110 correct.https://www.grainger.com/category/h...reaostat+speed+control?sst=All&ts_optout=true

I those would work I would just plug the FX into the high fan speed winding and let it regulate the motor.

 

[krush]

Krush
Gotta ask. Why not a simple reaostat from Grangers like a simple house fan.

That reostat changes the voltage for speed control. This only works on certain single phase AC motors (universal, shaded pole, perm split capacitor). It doesn't work very well on induction motors. This is why I asked what type of blower he has. If it is a motor like one has in their large house HVAC system, the motor will likely have different windings for different speeds, or some type of VFD (variable frequency control).

 

[Pete]

X2 what MVCaprice suggested.

Pete

 

[SKYCHENEY]

I set the FX1 to constant high speed fan and just use the high/low switch as before.

 

[MVCaprice]

I set the FX1 to constant high speed fan and just use the high/low switch as before.

This seems to be the most likely outcome, although I need to look at the motor a little closer to make sure there aren't other options. I'll post back with my findings and motor info once I get a chance to take a look at it.