in a single transformer system RC/RH should be jumped and it wont matter because the power comes from the B/O terminal in your stat.
the reversing valve will be spring loaded and will only be powered in one mode, returning to default in the other. you need to determine which way your valve is defaulted and supply power as needed.
A forum community dedicated to professional HVAC contractors. Come join the discussion about The industry, safety, ducting, finishing, tools, machinery, projects, styles, scales, reviews, accessories, classifieds, and more!