Seresco USA
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The Outdoor Air (OA) Series, an indoor split dedicated outdoor air system (DOAS) dehumidifier featuring the smallest refrigerant charge in the HVAC industry, according to the company.
The OA Series uses Seresco's Protocol Technology, which substitutes HFC refrigerant with less expensive and environmentally-friendly glycol for heat rejection to an outdoor dry cooler in all commercial applications. Substituting refrigerant and its costly copper line sets with inexpensive glycol and PVC piping dramatically simplifies installation and reduces onsite labor/material costs by 60 to 75 percent. This glycol outdoor heat rejection approach eliminates the installation challenges and limitations associated with systems using condensing units with refrigerant piping to indoor air handlers.
The OA Series ranges from six to 30 tons and 1,000 to 6,000 cfm (dependent upon geographical humidity conditions). Seresco's OA concept works with variable refrigerant flow (VRF) and active chilled beam designs looking for indoor split systems for treating outdoor air.
Besides Protocol Technology, every OA Series unit's standard features include fully-dipped corrosion-resistant coils, high efficiency electronically-commutated (EC) motor/fans, and unit configurations that separate critical components/controls from the supply air stream. Another standard feature is Seresco's WebSentry, a web browser-based software/hardware application that monitors and transmits 100+ operating parameters, including compressor pressures, from the onboard CommandCenter microprocessor controller to authorized smart phones or email. WebSentry's 24/7 monitoring assures optimum energy efficiency and reliability throughout the unit's lifecycle.
Other benefits include factory-charged and sealed refrigeration circuit requiring no on-site refrigerant labor, dual compressor and interlaced evaporator coil design, no large ductwork chases needed, and precise modulating reheat from compressor waste heat in the glycol heat rejection loop.
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posted: 12/21/2016
