Honeywell Heat/1Cool User Guide - Page 57
Florida Heat Pump - heat cool units
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Electromechanical Chronotherm® III FLORIDA HEAT PUMP TYPICAL "LT" UNITS Electronic Replacement or Upgrade Chronotherm IV T841A1712 Y594R1425 Y5Y9549G41G4174619 T8T681611G11R0100400 T8T481411R11R0120802 T8T581511G11G0140721 T8T081011R11R0110406 T8T681611G12G0220802 W890P0CB8190000/2 Function Existing Terminals Common ´ C X X X C C C C C C Power R Compressor Y 1st Stage - Heat Aux. Heat W R R R R R R R R R or Y Y Y1 Y1 Y Y Y1 Y Y1 Y1/W1 ² ² ² ² ² ² ² - W1 W1 W1 W1 W1 W1 W1 - µ W2 W2 W2 W2 W2 W2 W2 W2 Aux. Fan G C/O Valve - Heat C/O Valve or W O Cool System Monitor/ X System Defrost EM. Heat - G G G B B B O E¿ O · L ¿ E O · X1 E¿ G B O ¾ L E¿ G G ³ or B B O/B ³ or O O O/B ¾ · L L ¿ ¿ E E G G ³ or B B O/B ³ or O O O/B ¾ · L L ¿ ¿ E E G ³ O/B ³ O/B · L ¿ E Multiple Aux. - W3 W3 W3 - Heat Loads » - - - - - LED Indication - 2nd Stage - Compressor - X2 º X2 º X1 X2 ¶ - - - - - - - - - X1 X2 - - - W2 µ ³ Configure O/B (select models) in Installer Setup. · LED is energized when terminal is powered. » Terminal is for multiple second stage heating loads such as contactors, sequencers, or relays. ¿ E-W2 jumper required unless emergency heat function is wired separately. ´ Terminal X (C) must be connected to transformer common. ² Do not remove factory-installed jumper. ¶ Optional CHECK LED on T8611G1004. See Fig. 26. º Field-installed X2 to X jumper (provided). ¾ L terminal is powered continuously when thermostat is in Em. Ht. position. µ When W2 is not used, configure W2 cycle rate to NC. M13175 70-6627 • 55