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Emerson 50M56-7433 manual

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Table of contents for the manual

  • Page 1

    50M56-743 Integrated Single or T wo-Stage HSI Integrated Furnace Control Kit INST ALLA TION INSTR UCTIONS DESCRIPTION The 50M56-743 kit is an automatic gas HSI Integrated Fur- nace Control that emplo ys a microprocessor to continually monitor , analyze, and control the proper oper ation of the gas burner , inducer , and fan. Signals inter preted du[...]

  • Page 2

    2 SPECIFICA TIONS ELECTRICAL RA TINGS [@ 77°F (25°C)]: Input V oltage: 25 V AC 50/60 Hz Max. InputCurrent@25 V A C: 0.45 amp Rela y Load Ratings: V alve Rela y: 1.5 amp @ 25 V AC 50/60 Hz 0.6 pf Ignitor Rela y: 6.0 amp @ 120 V A C 50/60 Hz (resistive) Inducer Rela y: 2.2 FLA–3.5 LRA @ 120 V A C Circulator Rela y: 14.5 FLA–25.0 [...]

  • Page 3

    3 MOUNTING AND WIRING All wiring should be installed by a qualified heating and air conditioning contractor or licensed electrician, according to local and national electrical codes and ordinances. The control must be secured to an area that will e xper ience a minimum of vibration and remain belo w the maximum ambient temperature rating of 176°F[...]

  • Page 4

    4 WIRING TH TR MV HI MV COM MV LO GND HLO HLI PSO PSI C R G W Y Y W G R THERMOSTAT 2 STAGE GAS VALVE HIGH LIMIT (N. C.) ROLLOUT (N. C.) AUX. HIGH LIMIT (N. C.) PRESSURE SWITCH (N. O.) COMPRESSOR CONT AC TO R ELECTRONIC AIR CLEANER CIRCULATOR BLOWER 50M56 24 VAC 120 VAC 24 VAC CLASS II TRANSFORMER HOT (LINE) NEUTRAL (LINE) FS FLAME SENSOR PROBE TH T[...]

  • Page 5

    5 50M56 TERMINAL TERMINAL TYPE SYSTEM COMPONENT CONNECTION TYPICAL SYSTEM WIRING TABLE † Maximum recommended flame probe wire length is 36 inches. low v oltage ther mostat W ter minal (or equivalent) low v oltage ther mostat G ter minal (or equivalent) low v oltage ther mostat R ter minal (or equivalent) low v oltage ther mostat Y terminal (or eq[...]

  • Page 6

    6 OPERA TION OPTION SWITCHES The option s witches on the 50M56-743 control are used to determine the length of the heat delay-to-f an-off per iod, the mode of operation, and the 2nd stage dela y per iod. The f ollowing illustration sho ws the options and the selections of the s witch positions. The switches are shown in the f actor y def ault posit[...]

  • Page 7

    7 SYSTEM LOCK OUT FEA TURES When system lock out occurs, the gas valv e is de-energized, the circulator blo wer is energized at heat speed, and, if flame is sensed, the inducer blo wer is energized. The diagnostic indicator light will flash or glow continuously to indicate system status. (System lockout will ne ver override the precautionaryfe[...]

  • Page 8

    HOMEO WNER HELP LINE :1-800-284-2925 White-Rodgers is a business of Emerson Electric Co. The Emerson logo is a trademark and ser vice mark of Emerson Electric Co. www .white-rodgers.com www .emersonclimate.com Red LED Flash Error/Condition Comments/T roubleshooting 1 Exter nal lockout (e xceeded retries) F ailure to sense flame is often caus[...]