DIRECT EXCHANGE SYSTEM DESIGN IMPROVEMENTS

摘要

An R-410A DX heating/cooling system with: an electrical generating expansion device (3); with a protective means (11) for refrigerant transport tubing (9) containing dissimilar metals and/or in corrosive environments; with an automatic heating mode expansion device (12); with a TXV by-pass (18) design; with retractable sub-surface tubing designs; with sub-surface line set sizing at varying depths and lengths; with reciprocal compressor sizing; with a DX Hydronic system design; with an improved oil separator float (42) design; with a mobile DX system design; and with a resting module DX system design.