Acronyms for units

[gwoner]

I'm a new apprentice to the commercial side of HVAC and need some info on acronyms for units. What they stand for such as RTAA, RTAC, SACC and so on. I see them on my paperwork and would like to know what to expect when I get to the jobsite. It's a dirty job but it's nice to be working again. Any help would be apreciated.

[jayguy]

most of the time, they are just model numbers man. i personally do not try to figure them out...over time and with enough practice you learn what they are. if you get the IOM (Installation and Operations Manual) they nomeclature will tell you what all of the numbers mean. i recommend that you write down the model numbers and the manufacturers and then go get the literature. sometimes, things change so much that you can barely keep up.

good luck.

[clgman]

You bring up an interesting question ? AS an apprentice I was never informed to the classification of equipment, and what the importance of series numbers indicated unless you were trying to locate a replacement part. My advice to you, if you really want to know, is to collect manufacturers product spec books, either in copy or on CD, and review the data. There is just way to many designations of equipment, by each manufacturer, for any near of a complete list to be typed out in this forum. The first two you mentioned are Trane packaged air cooled chillers, with RTAA being the first series, and the RTAC being the current model. If you have a specific unit you need data on I'm sure a follow HVAC Talk member can locate it for you. One suggestion I do have, as an apprentice, it's obvious your thurst for knownledge is great, so start your own library. Everytime you work on a piece of equipment that you have questions on, zap off a request to the local rep for the OM manual and wiring diagram for that unit. Before long you will be filling binders of the stuff. I know, better on
CD for you young guys. Hey good luck !!!!

[allstar08]

Man!! good point. This industry is notorious for this. I have not gotten used to this at all. In residential, where I got my feet wet there was none of this now I find myself drowning in it. I was like and RFI? or emcs? I wish there was a ledger for these terms.

[51fitter]

They really aren't that important but the RTA is a Helical Rotary Chiller. The A means Air cooled condenser.

RTH is water cooled.

CVH is a centravac.

This like has a Trane list I just found it. :)

http://www.tranethailand.com/products/eq_applied.asp

[jimbob73]

"POS" is a popular one.