Honeywell Heat/1Cool User Guide - Page 101
Optional Check LED on T8611G1004. See Fig. 26.
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TRANE/AMERICAN STANDARD Electromechanical Chronotherm® III Electronic Replacement or Upgrade Chronotherm IV T841A1712 Y594R1425 Y5Y95494G1G4174619 T8T681611G11R0100400 T8T481411R11R0120802 T8T5815111G1G0140721 T8T081011R11R0110406 T8T6816111G2G0220802 W890P0CB8190000/2 Function Existing Terminals Common · B X X X C C C C C C Power R R Compressor Y Y 1st Stage - - Heat Aux. Heat W or X1 W2 R Y ´ W1 R Y1 ´ W1 R or Y1 Y ´ W1 W2 W2 W2 R Y ´ W1 R Y1 ´ W1 W2 W2 R Y ´ W1 W2 R R Y1 ´ W1 Y1/W1 - ¹ W2 Aux. Fan G G C/O Valve - B Heat C/O Valve O O Cool System Monitor/ F System Defrost Outdoor or T H ³ Sensor G G B B O º L O º X1 ³ ³ G B O ¾ L » G G or ¿ B B O/B or ¿ O O O/B ¾ º L L G G G or ¿ ¿ B B O/B O/B or ¿ ¿ O O O/B O/B ¾ º º L L L » » » » » Outdoor Stat X2 E E E E E E E E E Multiple Aux. - Heat Loads ¸ LED Indication - 2nd Stage - Compressor W3 W3 W3 µ µ µ - X2 ¶ X2 ¶ X1 X2 ² - - - - - - - - µ µ µ - X1 X2 - ¹ - - W2 2nd Stage - - - - - - - - - Y2 Cool ³ Tape off. Outdoor reset not provided with Tradeline replacement thermostat. · Terminal must be connected to the transformer common. » Tape off. Thermostat replaces outdoor reset with improved zero droop performance. ᕤ Configure O/B (select models) in Installer Setup. ´ Do not remove factory-installed jumper. ² Optional Check LED on T8611G1004. See Fig. 26. ¶ Field-installed X2 to X (C) jumper. º LED is energized when terminal is powered. ¾ L terminal is powered continuously when thermostat is in Em. Ht. position. µ If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. ¸ Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. ¹ When W2 is not used, configure W2 cycle rate to NC. M13227 70-6627 • 99