As standards continue to shape the commercial building industry, the need for new ways to conserve energy use in already-efficient HVAC systems continues to grow.
ASHRAE 90.1-2010 and Title 24 building codes, already in place in several U.S. states and Canadian provinces, require new energy-efficiency standards in commercial buildings. These minimum requirements for energy-efficient design apply to new buildings and their systems, alterations made to cooling systems in existing buildings and additions to existing buildings.
To answer this growing need, Lennox now offers its patent-pending MSAV® (multi-stage air volume) supply fan technology as a factory-installed option on several light commercial rooftop unit models, including the Energence® light commercial rooftop unit and Strategos® rooftop unit product lines.
MSAV supply fan technology helps reduce energy use while still meeting comfort requirements. Using a variable frequency drive or Electronically Commutated Motor (ECM), the MSAV option provides the capability to lower airflow during part-load cooling, heating, ventilation and free cooling operation modes to dramatically reduce energy costs. Preset at the factory, this option allows for quick and easy start-up of the unit. There is great flexibility to customize airflow settings by making simple changes in the unit’s intelligent Prodigy® unit controller. This option not only saves money, but it also allows users to help meet ASHRAE 90.1-2010 and California Title 24 requirements for single-zone VAV systems.
Here’s how MSAV technology helps to conserve energy in various modes of operation:
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