Abstract: A drain box assembly for a convertible splash pad/ice rink structure comprises a housing having an open top and a closed bottom, sidewalls connecting the top and bottom of the housing in fluid sealing relation to form within the housing a vertically directed water flow channel that connects a water ingress port and a water egress port in fluid communication one with the other. Connectors operatively secure the housing at the water egress port to a drain pipe. A plurality of coolant pipe segments each have an axis of symmetry extending between a first open end and a second open end. The coolant pipe segments are mounted on the housing to extend through the vertically directed water flow channel adjacent the open top, in substantially transverse relation to the vertical water flow channel. The first and second open ends of each coolant pipe segment extend beyond the one or more upright walls.

Abstract: A drain box assembly for a convertible splash pad/ice rink structure comprises a housing having an open top and a closed bottom, sidewalls connecting the top and bottom of the housing in fluid sealing relation to form within the housing a vertically directed water flow channel that connects a water ingress port and a water egress port in fluid communication one with the other. Connectors operatively secure the housing at the water egress port to a drain pipe. A plurality of coolant pipe segments each have an axis of symmetry extending between a first open end and a second open end. The coolant pipe segments are mounted on the housing to extend through the vertically directed water flow channel adjacent the open top, in substantially transverse relation to the vertical water flow channel. The first and second open ends of each coolant pipe segment extend beyond the one or more upright walls.

Abstract: An ice rink chilling unit includes a heat extraction subassembly, a refrigeration subassembly, a stand-alone enclosure, and a single-phase AC electrical connector. The extraction subassembly includes quick-connect couplings removably connecting with rink piping to form a secondary closed loop. The refrigeration subassembly defines a primary closed loop engaging the extraction subassembly in heat exchanging relation. The enclosure encapsulates the refrigeration and extraction subassemblies. The quick-connect couplings extend outside of the enclosure. The extraction and refrigeration subassemblies are pre-wired and pre-plumbed inside of the enclosure. The electrical connector is accessible from outside the enclosure and connects the extraction and refrigeration subassemblies to the electrical source in single-phase AC relation. Coolant fluid circulates through the secondary closed loop, and refrigerant fluid circulates through the primary closed loop.