Honeywell Heat/1Cool User Guide - Page 40
Armstrong/air-ease
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ARMSTRONG/AIR-EASE Electromechanical Chronotherm® III Electronic Replacement or Upgrade Chronotherm IV T841A1712 Y594R1425 Y5Y9549G41G4174619 T8T681611G11R0100400 T8T481411R11R0120802 T8T581511G11G0140721 T8T0810111R1R0110406 T8T6816111G2G0220802 W89P00C8B910000/2 Function Existing Terminals Common ´ or X C X X X C C C C C C Power R R Compressor Y Y ² 1st Stg. Heat W1 - Aux. Heat W2 W2 R Y ² W1 W2 R Y1 ² W1 W2 R or Y1 Y ² W1 W2 R Y ² W1 W2 R Y1 ² W1 W2 R Y ² W1 W2 R Y1 ² W1 W2 R µ Y1/W1 - ¶ Aux. Fan G G G G C/O Valve B B B B Heat C/O Valve O O O O Cool G G G G G G or ³ ³ or ³ B B B O/B B B O/B O/B or ³ or ³ ³ O O O O/B O O O/B O/B System Monitor/ L System Defrost · L · X1 L» » L · L » L · L L· EM. Heat E E E E ³ E E E E E E Multiple Aux. W3 W3 W3 W3 Heat Loads ¿ - - - - - LED Indication - Defrost P 2nd Stage - Compressor - X2 º X2 º X1 X2 ¾ - - - X1 X2 - - - - ¸ P - - - - - - - - ¶ - - - - - W2 ³ Configure O/B (select models) in Installer Setup. · LED is energized when terminal is powered. » L terminal is powered continuously when thermostat is in Em. Ht. position. ¿ Terminal is for multiple second stage loads such as contactors, sequencers, or relays. ´ Terminal X or C must be connected to transformer common. ² Do not remove factory-installed jumper. ¶ When W2 is not used, configure W2 cycle rate to NC. º Field-installed X2 to X jumper (provided). ¾ Optional CHECK LED on T8611G1004. See Fig. 26. µ If separate Y1 and W1 terminals are required, install R8222D1014. See page 12. ¸ Available on T8611R1000 only. M13143 70-6627 • 38 TYPICAL THERMOSTATS AND SUBBASES - HONEYWELL MODEL NUMBER T8611R1182 T841A1597