Honeywell Heat/1Cool User Guide - Page 73
Optional CHECK LED on T8611G1004. See Fig. 26.
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INTERTHERM/MILLER/NORDYNE Electromechanical Chronotherm® III Electronic Replacement or Upgrade Chronotherm IV T841A1712 Y594R1425 Y5Y9549G41G4174619 T8T681611G11R0100400 T8T481411R11R0120802 T8T581511G11G0140721 T8T081011R11R0110406 T8T681611G12G0220802 W890P0CB8190000/2 Function Existing Terminals Common » X or C X X X C C C C C C Power R Compressor Y 1st Stage - Heat Aux. Heat W2 Fan G C/O Valve B Heat C/O Valve O Cool System L Monitor R R R R R R R R R Y Y Y1 Y1 or Y Y Y1 Y Y1 Y1/W1 ´ ´ ´ ´ ´ ´ ´ - W1 W1 W1 W1 W1 W1 W1 - · W2 W2 W2 W2 W2 W2 W2 W2 Aux. ¾ ¾ ¾ ¾ ¾ ¾ ¾ G G G G G G G G G ᕡ or ᕡ or ᕡ B B B B B B O/B B B O/B O/B ᕡ or ᕡ or ᕡ O O O O O O O/B O O O/B O/B ¸ L µ L µ ¸ L L µ L ¸ L L¸ Em. Heat E E E E E E E E E E Multiple Aux. Heat Loads ¿ W3 W3 W3 W3 º º º LED Indication X2 or X1 - ¶ X2 X1 X2 ¾ X1 X2 ² - - 2nd Stage - - - - - - - Compressor º º º ¾ - X1 X2 - · - - W2 2nd Stage - Cool - - - ³ Configure O/B (select models) in Installer Setup. · When W2 is not used, configure W2 cycle rate to NC. » Terminal X (C) must be connected to transformer common. ¿ Terminal is for multiple second stage loads such as contactors, sequencers, or relays. ´ Do not remove factory-installed jumper. ² Optional CHECK LED on T8611G1004. See Fig. 26. - - - - - Y2 ¶ Field-installed X2 to X jumper provided. º If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. ¾ Optional LED indication activated with completed circuit on X1 and X2 terminals. µ L terminal is powered continuously when thermostat is in Em. Ht. position. ¸ LED is energized when terminal is powered. M13192 70-6627 • 71