Upgrade my Carrier 19XR

[BACNet Jr.]

We have two (2) 1,000 TR Carrier 19xr, centrifugal, R-134a chillers, and has been around for 15 years.

I want to upgrade it with VFDs to reduce our energy consumption. For 6 hours a day, the chillers is running at 75% load. You shut down one chiller, then phone starts ringging.

What VFDs and controls would be recommended for the chiller upgrade. We are open to use parts from other brand/manufacturer.


And lastly, is it feasible just to retrofit it with multiple turbocors?

[nique]

carrier has already done all the homework for you. the vfd and controls are all available from them. been doing that retrofit for years, it works great no turbocors needed.

[flange]

yeah, the turbocore thing is nice, but for a relatively modern machine with a kit available it may not make sense. run the conditions and look at cost to fully understand if you must.

[Dallas Duster]

You could not have said it any better.

yeah, the turbocore thing is nice, but for a relatively modern machine with a kit available it may not make sense. run the conditions and look at cost to fully understand if you must.

[southparks]

Upgrade to PIC 3 controls from Carrier and have them put a Liquid Flow drive on... Much easier and made for those chillers.

[spinning wheel]

I have to agree with southparks, not to mention that carrier will be willing to assist with selection of parts and can provide savings profile from original compressor selection. Might cost a little more but in the end it will not look like a pile of crap that was put together from aftermarket parts.