Dual Condenser Heat Pumps

Dual condenser heat pumps are essentially an "O" (water-to-air) and "W" (water-to-water) series combination heat pump. The addition of a second, full-condensing, refrigerant-to-water heat exchanger allows the "DC" unit to function as a water-to-water heat pump whenever the unit is not calling for "air" heating or cooling. Switching of modes is done electronically with the air side of the system having priority. The priority of the "DC" unit can be reversed at the time of factory order so that hot water output has priority - with off cycle time available for hot or cool air production.

These units are ideally suited to a home or business such as a kitchen, laundry, car wash etc. where the need for hot water production is greater than a conventional desuperheater coil can provide.

Many homeowners find a "DC" unit ideal in a situation where the first floor or basement of a home is on a concrete slab while the rest of the home is built in a conventional fashion. Heating and cooling of the upper floors can be handled through conventional ductwork while any off cycle time of the heat pump can be used for heating the radiant floor.

Duct design for a dual condenser is exactly the same as for a regular "O" series while plumbing for the full-condensing hot water exchanger is done as per a "W" unit.

Indoor pools and saunas are also easily heated during off cycle time of the heat pump.

Units are available from 3HP to 5.75HP with either type 316 stainless steel exchangers or cupro-nickel coaxial coils.

Drawing - Connections to Full Condensing heat exchanger on "DC" heat pump.

General specifications