YORK® YMAE Air-to-Water Inverter Scroll Heat Pumps

The YORK YMAE air-cooled full DC inverter modular chiller and heat pump provides chilled and hot water for all air conditioning applications using an air handling or terminal unit.

The unit is completely self-contained and designed for outdoor installation at roof or ground level. Each packaged unit includes hermetic scroll compressors, liquid heat exchanger, air-cooled condensers, R-454B refrigerant, and a weather-resistant microprocessor control center, all mounted in a sheet metal frame. Units are suitable for single or multiple unit installation with the possibility to connect up to 32 modules together in one control group network. Up to four modules can be provided as a factory package with single point electrical connection. The unit is available as either a two-pipe reversible heat pump or four-pipe simultaneous heating and cooling machine, with load balancing capability enabled by the air-source heat exchanger.

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Correct system design considers the range of potential operating conditions, system and heat pump equipment sizing, and any requirements for redundancy.
Commonly used high-temperature, hot-water conditions do not only result in high system energy consumption but are not even attainable with commonly available heat pump technologies. The common high-temperature heating assumptions of the past must be abandoned and low-temperature supply heating concepts embraced. Historic “rules-of-thumb” for system capacity sizing must be reconsidered.
Computerized load analysis for new buildings and accurate load history for existing buildings is essential for designing the correct system and meeting owners’ environmental and financial goals.

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