Craig, The NA502640A is going to be the only low lead air vent available for domestic water applications. If using domestic hot water through the fan coil unit you will need to make sure the diverting valve and all components are rated to be used with domestic water. If not you will want to separate the units to a hydronic closed loop circuit independent of the domestic hot water for the building.
Craig, The NA502640A is going to be the only low lead air vent available for domestic water applications. If using domestic hot water through the fan coil unit you will need to make sure the diverting valve and all components are rated to be used with domestic water. If not you will want to separate the units to a hydronic closed loop circuit independent of the domestic hot water for the building.