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A good user manual
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Table of contents for the manual
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Page 1
47D40-801 Demand Defrost Contr ol INST ALLA TION INSTRUCTIONS The 47D40-801 control is a microprocessor-based demand defrost controller intended f or Rheem heat pump systems. This controller uses basic diff erential temperature means to detect degradation of system perf ormance due to ice build-up on the outdoor coil. The controller uses “self-ca[...]
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Page 2
2 SPECIFICA TIONS Electrical Ratings [@ 77 o F (25 o C)]: Rated V oltage ..................................... 24 V A C Rated V oltage Range ............................... 18-30 V AC Max. P ower Consumption @ 24 V AC .................. 4.08 V A Nominal F requency ................................. 50/60 Hz Rela y Load Ratings: Compressor Contactor [...]
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Page 3
3 INST ALLA TION On some units, the Outdoor Ambient T emperature (OA T) and Outdoor Coil T emperature (OCT) sensors ma y be attached permanently to the controller. The 47D40-801 includes replacement OA T and OCT sensors that plug onto the 2- and 3-pin connectors on the controller board. Bef ore removing the old controller , note the location of the[...]
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Page 4
www .white-rodgers.com www .emersonclimate.com White-Rodgers is a division of Emerson Electric Co. The Emerson logo is a trademark and service mar k of Emerson Electric Co.[...]