A few things I noticed are that, first, this unit is designed for aquariums, so I'm doubtful that it is rated for operating temperatures with leaving fluid temperatures of 25-27 F.

I also noticed that the unit doesn't come with a chilled loop pump, looks like they are designed for on an external aquarium water/filter pump to circulate thru the chiller heat exchanger.

I can see how the price would be attractive, but even without my bias as a manufacturer of brewery chiller systems, I'd caution you against applying this unit for a brewery application. I'd definitely contact the manufacturer and make it clear how you plan to use the system, maybe they've converted some systems successfully for brewery projects- but without their support, I'd be hesitant to make the purchase.

I hope this was helpful.

Good Luck,

Jim
jimvgjr@prorefrigeration.com