Ice Bear® 30 Unit Ratings by Ton-hour
Ice Cooling Mode
During Ice Cooling mode, the integral Ice Bear condensing unit is switched off and typically one 5-ton
condensing coil on the Base System is locked out. The Ice Cooling circuit, which includes an ice-on-coil
heat exchanger, a refrigerant pump, and Ice-Coil™ are physically isolated from the Ice-Make circuit and
its refrigerant charge by a unique receiver/separator. When there is a request for cooling, a refrigerant
pump circulates the oil-free liquid R-410-A refrigerant through the liquid supply line to an Ice-Coil
located in the air stream. Typically this is a Redundant Ice-Coil installed into a packaged rooftop unit or a
slab coil mounted in the air supply duct. The vapor return line returns vaporized or mixed phase
refrigerant to the Ice Bear unit’s ice-on-coil heat exchanger where it melts ice and is condensed back into
its liquid state.
Figure 4 – Refrigerant Flow Schematic – Ice Cooling Mode
8 Ice
Bear
®
30 Unit Application Guide