422-D

[hvacman2213]

so i was at the supply house today and watched a guy pull in with a **** box truck. picked up a Rudd 2ton 13s unit and and a walk in cooling unit. think nothing of it and go on with my day. so i go to subway Naples fl for lunch today and i see this guy next door and a little pizza place putting 422-d in the rudd unit help my thinking because idk?

[54885488]

What is 422-d and what does idk mean ?

[jpsmith1cm]

R-422d is a refrigerant.

idk is text-speak for I don't know.

[54885488]

Thank you .

[ryan1088]

Sounds like the beginning of an adventure for him. There are a lot of things different from a refer unit an a standard ac. Seems to me he's gonna find out what those are the hard way.

[54885488]

That looks like a interesting refrigerant . Is it any good ?

[jpsmith1cm]

That looks like a interesting refrigerant . Is it any good ?

Not a fan

Capacity losses make it a poor choice for R-22 replacement.

[jpsmith1cm]

Sounds like the beginning of an adventure for him. There are a lot of things different from a refer unit an a standard ac. Seems to me he's gonna find out what those are the hard way.

[hvacman2213]

whats going to happen when he needs to defrost lol if he even gets up to temp.

[54885488]

Ok i get this thread walkin evap unit with the rudd unit as the condensing unit . Thats so far out there i could not connect the dots .

[jpsmith1cm]

I've heard of it being done and I suppose that, given proper sizing considerations and environmental considerations (HVAC equipment like that typically don't have low ambient controls that refrigeration equipment needs) it can be made to work.

I've never SEEN it and I think that I'd condemn it on the spot if I did.

Much smarter to install the correct equipment for the tech AND the customer.

[jpsmith1cm]

whats going to happen when he needs to defrost lol if he even gets up to temp.

Far easier than you think.

Defrost could be accomplished with an add-on pressure control or an add on timer.

[ryan1088]

I predict no less than 2 trips a year to "fix" it. Customer probably wanted the cheapest job possible and that's what they got!

[CoolWine]

Perhaps you can get away with no LAC in Fl.

[CoolWine]

Perhaps you can get away with no LAC in Fl.

Head pressure control is all figured out http://cheezburger.com/3856856576

[ryan1088]

Perhaps you can get away with no LAC in Fl.

Head pressure control is all figured out http://cheezburger.com/3856856576

Wowzers, that's quite a setup! Where can I order one from??

[ararams]

I said the same thing as JP ,when someone install a 5t rudd ac condenser replaced a larkin 5t ten +years ago and as of yeterday when I pass the building it was still there running I think. Guess I was wrong.

[ararams]

Perhaps you can get away with no LAC in Fl.

Russell sierra units have no reciever nor head pressure control.