Product Manual

SRHT 20-350 AC User Manual US-EN
02250246-084 R01
Subject to EAR. ECCN EAR99 and related export control restrictions.
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Refrigeration cycle – Refrigerant gas is cycled through the compressor and exits at high pressure to a
condenser where heat is removed causing the refrigerant to condense to a high-pressure liquid state. The
liquid is forced through a capillary tube where the resulting pressure drop allows the refrigerant to boil off at a
predetermined temperature. Low-pressure liquid refrigerant enters the heat exchanger where heat from the
incoming air is transferred causing the refrigerant to boil; the resulting phase change produces a low pressure,
low temperature gas. The low-pressure gas is returned to the compressor, where it is re-compressed and
begins the cycle again. During those periods when the compressed air load is reduced the excess refrigerant
is by-passed automatically back to the compressor via the Hot Gas By-pass Valve circuit.