Will this blower be okay to use?

[LFChandler]

Greetings,

I want to know if this type of blower will work? I am getting ready to set up my ventilation system. I told DH I needed a squirrel cage and magically he pulled one from somewhere out in the garage!!

He said it came out of an air purifying system. I have written down everything I could read on it:

Model 2S0671
T.R. class "B"
Then it also has"
Model 67PCF? not sure because the numbers were so faded
T.R. class "B"
120 volt
.68 amps?
2800 RPM
25"C" AMB?

Very faded numbers...sorry. I could not find a make anywhere on it.
It is a single speed double fan unit.

I only have a 36 inch bench that is directly in front of the window I will use. There will be one or two slight bends in the ductwork. The fans seem rather small at just under 3 inches on the actual fan blades and not including the housing.

Thanks for any help.

Lorraine

[MikeAurelius]

Without a manufacturer name to look up, it is impossible to say.

"Most" compact squirrel cage fans have relatively small suction openings, in the 5-6 inch range. That yours is in the 3 inch range raises a question in my mind as to how much air the fan really moves.

The speed isn't a good indicator either. You really need to find a manufacturer's name in order to cross reference the fan and find out how much air it moves, and what back pressures it can handle.

The label may also be just for the motor and not the entire fan assembly.

[LFChandler]

Thanks Mike, I did some home work and used the guidelines for room size and size and shape of my hoodbox opening etc. The one I had was NOT going to do it.

I just came back from getting a freebie from a heating and cooling yard of throwaways...I am going to try to get the info off of it and then I shall return. It is huge..I think it may be overkill or maybe I can just rebuild a two person unit??

Thanks again and I will return with more info. I am a little better informed now although I needed DH to help me do all of the formulas to figure out what I really needed. Be back shortly.

Lorraine

[LFChandler]

Oaky...here is what I have from the motor itself. I found nothing on the squirrel cage except that it was made in Mexico.

A.O. Smith 322P956 code number is: 1468-230 (replaced with newer model# MoT1468-239)
H/P 1/3 volt 115
RPM 1100 3 speed
A 5.0
class "B" SER 2L90
thermally protected type C (hemetic Motor?? just guessing)

Looks like a 10 or 12 inch fan Came out of a central air and heating unit.

I have not built my hood box yet. I wanted a 24X24 but can do 3 or 4 feet etc. What ever will fit the fan and my room and workbench. Room is 9X9 by 8 feet tall.

Make up air is coming from an open door or window about 15 feet away from another room and I could use a floor fan to pull in more fresh air and direct it to the studio room.

Blower will be installed into a window frame and exhausted to outside right over workstation. Very little ductwork..Maybe 5 feet and one 45 degree bend or two at the most. Ductwork is smooth and 8" across.....and I thought choosing a kiln was hard!

Thank-you
Lorraine

[MikeAurelius]

I can't find anything on either of those part numbers, but I'm guessing that again, they are motor part numbers and not part of the fan assembly.

The main problem with using a fan out of a furnace/air conditioner is that they are designed to move *a lot* of air...and many times, the amount of air is substantially more than you actually need to move. This can cause problems during the winter months especially in small rooms like yours. Your room has only 648 cubic feet, and putting in a (just guessing) 2000 CFM furnace blower is going to have a huge effect on the temperature/humidity of your room, especially if you are providing the fresh air through an open window. This fan would have the effect of entirely changing the room air 3 times per minute, and at the height of winter, this is Not A Good Idea.

If you want a 2' x 2' hood, you will need a fan that pulls 500 CFM (125 CFM per square foot). And since the room is so small, I would strongly suggest ducting your fresh air directly to your bench area to avoid affecting the temperature/humdity of the general room air.

I really don't recommend the use of surplus fans, especially if the fan characteristics (CFM, static pressure ratings etc) are unknown. You will spend far less money (and time) in the long term buying a new *known* fan than you will hunting for and buying multiple surplus fans trying to find the correct one.

[LFChandler]

Thanks MIke...the fans have been freebies so I am okay in that dept. You have convinced me. I will go out and buy "EXACTLY" what I need for my little room. It is worth it in the long run.


Lorraine