O series

Open loop - passive cooling heat pumps contain both compressor and blower sections of the heat pump in one cabinet. Optional desuperheater coils for production of domestic hot water are also available. Units are intended to pump water from an open well and discharge the water to a return well, pond, leaching field or other suitable method.

Units are available in either horizontal or vertical configuration. All units supplied with Electronic 2-stage heat 1-stage cool thermostat.

The refrigeration circuit is only operated in the heating mode while cooling is provided directly by pumping cold well water to the special section of the air coil. Domestic hot water is produced only during the heating mode. "O" style units are particularly suited to areas where the temperature of water supplies is below 50°F.