4-Pipe NORDIC Hydronic Air Handler AH4P Series
The AH4P-series is a 4-pipe version hydronic air handler that requires both heated and chilled indoor hydronic loops, for installations where both are always available. In this way, both heating and cooling are always instantly available, and also dehumidification can be performed.
These NORDIC Hydronic Air Handler units are often used to provide air conditioning in buildings that have hydronic in-floor heating, in conjunction with a liquid-to-water heat pump, or other hydronic heating system. They can also be used to provide multiple-zone heating and cooling, for example in retrofit applications where in-floor heating installation is not practical.
High Yield Btu/hr at lower water temperatures
Conventional water based fan coils often require higher water temperatures. They are designed for conventional heating boilers. A distinct advantage of the NORDIC Hydronic Air Handler is that it is designed to work with the more moderate water temperatures from water-to-water geothermal heat pumps. This means that you can run your heat pump at lower setpoint. Therefore increasing the COP of your overall system and still meeting the heating loads of the building. Have a look at the Output Capacity tables here: AHW-Series-Capacity-tables
About the Nordic® AHW & AH4P Series
The Nordic AHW-series and AH4P-series are ducted hydronic air handlers (fan coils) that can transfer the heating or cooling effect from heated or chilled water into air in a forced air duct system. The duct system of the air handler can be zoned, or more commonly comprises one zone of a larger zoned heating/cooling/dehumidification system.
Both the AHW and AH4P are available in one model size (65), which can be modulated over a very large capacity range by varying the airflow and water flow. Both vertical and horizontal versions are available, in 115-1-60 or 208/230-1-60 electrical service.
The AHW-series has provision for an internal electric plenum heater, which can be ordered as an accessory. If a plenum heater is required with the AH4P-series, it is placed outside the unit in the discharge ductwork.