Vertiv Liebert DSE, System Design And User Manual

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Liebert DSE ™ Model DA250
SL-18945_REV2_9-18 4 Guide Specifications
2.10 R-410A REFRIGERANT
The system shall be designed for use with R-410A refrigerant, which meets the U.S. Clean Air Act
for phase-out of HCFC refrigerants. Refrigerant shall be field supplied and field charged by the
installing contractor.
2.11 AIR-COOLED SYSTEMS
The indoor evaporator unit shall include refrigerant piping and shall have a factory holding charge
of nitrogen. The hot-gas and liquid lines shall be spun shut and each shall include a factory-
installed Schrader valve. Field-relief of the Schrader valve shall indicate a leak-free system from
the factory. Installing contractor shall cut the evaporator piping and shall evacuate and charge the
system. Refrigerant shall be supplied by the installing contractor.