[3DFanatic]

Next week we are installing a test system that is using a Samsung rotary compressor. It is a low tier model so I think it's safe to say it is cheaper.

 

[3DFanatic]

Besides Nordyne, who else is trying a rotary?

Trane

 

[3DFanatic]

What is Trane using a rotary in? Besides minis and they don't build them anyway, the Chinese do

The unit we are installing next week has a Samsung rotary in it and it is a 2.5 or 3 ton XB I think, will know more when it comes in. It may not come to fruition but with it going to field testing it is very likely that it will.

 

[3DFanatic]

So you say this is a field test for Trane with a rotary? The 3 ton XB13 has a LG scroll in it now.

Nordyne has a Samsung rotary in their cheapest 1.5 to 3 ton 13 SEER units. We've sold exactly 1.

Back to Trane, when they started buying Ameristar from Midea, they told them there must be scrolls in the units, no rotaries.

I am just going on what I was told by the boss man. He may have it wrong..... I will take a peak when the equipment shows up and report back.

 

[3DFanatic]

I am just going on what I was told by the boss man. He may have it wrong..... I will take a peak when the equipment shows up and report back.

Equipment has not come in yet but I did see the paperwork and it lists a 2.5 ton XB with Samsung rotary.

 

[3DFanatic]

The newest version of the 4TTB3030 will have an Alliance scroll. Anything with a rotary would have to be a field test, not a production unit.

COMPRESSOR; SCROLL, ALLIANCE, SXA025C1CPA, 2.08 TON, 208V-230V/60/1, R-410A, 3/4 SUCTION, 1/2 DISCHARGE, STUB TUBE, BLACK

Correct it is a field test.

 

[3DFanatic]

A brief history of scroll compressors http://airsquared.com/scroll-technology/history

http://holod-proekt.com/en/2011/09/oblasti-primeneniya-spiralnyh-kompressorov/

 

[3DFanatic]

If you are talking about small tonnage mini-splits... I think most of those are rotaries.

Copeland has a VRF scroll... it is based on the 36K BTU frame... runs 3000-7000 RPM based on a VFD box on the side of it...
Similar to an ECM motor if what I hear is correct.
As I understand, this is the pump in the GreenSpeed and Trane VRF units.

Greenspeed uses the Copeland but I am pretty sure Trane doesn't. They sound totally different, Greenspeed has high pitched whine while Trane does not. Trane VRF heat pump can vary between 25%-100% capacity whereas Carrier can only vary between 40%-100%. Also the compressor in the Trane does not look like a Copeland VRF compressor at all, it looks like a Danfoss

Trane VFR looks like this Danfoss scroll