CHILLER OPERATION A. Chiller shall be capable of starting and running at outdoor ambient temperatures from 9⁰F (0⁰C) to 115⁰F (46⁰C). B. Chiller shall be capable of starting up with 95⁰F (35⁰C) entering fluid temperature to the evaporator. Maximum water temperature that can be circulated with the Chiller not operating is 125⁰F (52⁰C) C. Chiller shall provide evaporator freeze protection and low limit control to avoid low evaporator refrigerant temperature trip-outs during critical periods of chiller operation. Whenever this control is in effect, the controller shall indicate that the chiller is in adaptive limit. If the condition exists for more than 30 seconds, a limit warning alarm relay shall energize. D. Rapid Restart™ after power restoration. The Chiller shall be capable of starting in 45 seconds. COMPRESSORS A. Construct chiller using fully hermetic scroll type compressors with R454B optimized and dedicated scroll profile. Refrigerant shall have a GWP of less than 600. B. Provide direct drive motor cooled by suction gas with only three major moving parts and a completely enclosed compression chamber which leads to increased efficiency. C. Each compressor shall have Intermediate Discharge Valves (IDV) or variable volume ratio technology
