Blower motors-Carrier

[ACFIXR]

Please forgive me for my ignorance, but what is the secret code or cypher to figure out a motors HP?

I usually, 95% of the time, am working on Trane family stuff and they like to write ( fill in the blank) on the unit tags and motors with a HP number.

I'm sure that I am fixing to get a shpeel about BHP and etc. But what the hell is the problem with these freakin idiot engineers there. The ones that cant put run caps in accessible places,

[timtanguay]

Most of the blower motors I've seen have the rating on the name plate. Normally says 1/2HP or 3/4HP or 5HP or whatever the rating is.



If it is in WATTS, then 746 Watts at the shaft is 1HP. Otherwise I am not sure what you are referring to. I've never noticed a cypher or code on a motor. Are you referring to the model number maybe?

[ACFIXR]

Unit Tag-



Motor tag-

[jpsmith1cm]

Dig into the manual.

Somewhere in the airflow charts, it gives the HP of the motor for calculating brake horsepower.

They're oddball numbers. I just replaced a 2.3hp motor, I think it was.

[SkullMonkey]

You could match the amps to another motor.

On the carrier blower motors you have to be careful of the Y in the frame number. When carrier puts a "Y" after the frame number , they have shifted the bolt pattern location on the motor.

If you use a regular 56 frame to substitute a 56Y the motor pulley will not align with the blower pulley. They do this on purpose.

A.O. Smith H97_ series are matches for many of these motors.

[ACFIXR]

Dig into the manual.

Somewhere in the airflow charts, it gives the HP of the motor for calculating brake horsepower.

They're oddball numbers. I just replaced a 2.3hp motor, I think it was.

Here is what is in the manual.



I'm sure that there is a simple explanation out there some where why they don't just put a whole number in.