Transcription of Introduction To VRF - Dayton ASHRAE
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Introduction To VRF - Dayton ASHRAE
Introduction To VRF:System Overview, Applications, & Savings OpportunitiesSystem System OverviewOverviewWhat is VRF? Zoning System Two-Pipe / Three Pipe System Packaged DDC Control Operates as a Heat Pump Simultaneous Cooling & Heating Inverter Technology / Variable Speed Compressor Multiple Indoor Units Up to 50 Indoor Units Per System Connected Diversity Up to 150% Variable Capacity Indoor Units EMS / BMS Compatibility High Turn Down Ratios Below 10% In Many CasesVariableRefrigerant Flow INVERTER TechnologyChanges electrical frequency from 60 Hz (line Power) to a varying range (10 Hertz to 110 Hertz depending on the system)INVERTER TechnologyTimeRoom Temperature Automatically adjusts compressor speed to meet load Sizing flexibility with variable capacity Strives to run long periods at lower speeds. Reduced / eliminated cyclic losses Improved temperature control No more minimum cycle timers no temperature Standard 1230 VRF HAS ARRIVED !
What is VRF? • Zoning System • Two-Pipe / Three Pipe System • Packaged DDC Control • Operates as a Heat Pump • Simultaneous Cooling & Heating • …
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