Multi-staged water manifold system for a water source heat pump

A multi-stage water control system for a water source heat pump, comprising:

• at least two compressors, each compressor of the at least two compressors being coupled to a refrigerant tubing for circulating refrigerant;
• at least two condensers, each condenser of the at least two condensers having a condensing coil with a water intake end, the at least two condensers being fluidly coupled together by a manifold, each condenser of the at least two condensers being fluidly coupled to a different one of the at least two compressors and each condenser of the at least two condensers configured to receive the refrigerant from the refrigerant tubing to form multiple, separate refrigeration loops, the at least two condensers configured to transfer heat from the refrigerant to water;
• a water intake conduit coupled to the manifold;
• a first water output conduit coupled to a first condensing coil of the at least two condensing coils and a second water output conduit coupled to a second condensing coil of the at least two condensing coils, each of the first and second water output conduits having first and second water control valves, respectively, interposed therein;
• a three-way valve coupled to each of the condensing coils of the at least two condensers and operable to divert fluid from inlets of each the condensing coils to an outlet;
• and
• a controller coupled to each of the first and second water control valves and configured to operate each of the first and second water control valves in a first position and a second position, wherein the first position of each of the first and second water control valves is a flow setpoint determined by the controller and the second position of each of the first and second water control valves is a closed position.

A method of manufacturing a multi-stage fluid control system for a fluid source heat pump system, comprising:

• placing at least two compressors on a housing frame, the at least two compressors being configured to compress and circulate a refrigerant and to operate as separate heat exchange stages;
• placing at least two condensers on said housing frame and fluidly coupling each condenser of the at least two condensers to at least one compressor of the at least two compressors by refrigerant tubing holding the refrigerant, each of the at least two condensers including a condensing coil holding fluid, each condensing coil configured to condense the refrigerant and transfer heat to the fluid, the condensing coil further having fluid intake ends coupled together by a fluid intake manifold;
• coupling fluid output conduits to an outlet of each of the condensing coils, said fluid output conduits being couplable to a distal location;
• and
• placing a modulating valve control system between the fluid output conduits and each of the condensing coils, the modulating valve control system configured to:
• modulate a first valve of the modulating valve control system between a first position of the first valve and a second position of the first valve, wherein the first position of the first valve is a flow setpoint determined by the modulating valve control system and the second position of the first valve is a closed position;
• and
• modulate a second valve of the modulating valve control system between a first position of the second valve and a second position of the second valve, wherein the first position of the second valve is a flow setpoint determined by the modulating valve control system and the second position of the second valve is a closed position.