Honeywell Heat/1Cool User Guide - Page 106
Westinghouse
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WESTINGHOUSE TYPICAL HSO Electromechanical Chronotherm® III Electronic Replacement or Upgrade Chronotherm IV T841A1712 Y594R1425 Y5Y9549G41G4174619 T8T681611G11R0100400 T8T481411R11R0120802 T8T581511G11G0140721 T8T081011R11R0110406 T8T681611G12G0220802 W890P0CB8190000/2 Existing Function Terminals Common ´ X 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 - · W2 W2 W2 W2 W2 W2 W2 W2 Aux. Fan G G C/O Valve B B Heat C/O Valve O O Cool System Monitor/ L or L1 System Defrost G G B B O ¿ L O ¿ X1 G B O µ L G G or ³ B B O/B or ³ O O O/B µ ¿ L L G G or ³ B B O/B ³ or O O O/B µ ¿ L L G ³ O/B ³ O/B ¿ L Em. Heat E E E E E E E E E E Multiple Aux. W3 Heat Loads » LED Indication - 2nd Stage - Compressor - W3 W3 ¾ ¾ ¾ ¾ ¾ ¾ - X2 º X2 º X1 X2 ¶ - - - - - - - - - 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 is for multiple auxiliary heat loads such as contactors, sequencers, or relays. ¿ LED is energized when terminal is powered. ´ Terminal must be connected to the transformer common. - - - - - Y2 ² Do not remove factory-installed jumper. ¶ Optional Check LED on T8611G1004. See Fig. 26. º Field-installed X2 to X (C) jumper. ¾ If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. µ L terminal is powered continuously when thermostat is in Em. Ht. position. M13210 TYPICAL THERMOSTATS AND SUBBASES - HONEYWELL MODEL NUMBER T872G1034/Q672F1141 T872G1034/Q672F1091 T872G1034/Q672F1257 T872G1034/Q672J1013 T872G1034/Q672J1062 T872G1265/Q672F1265 T872R1149/Q672L1110 T872R1149/Q672L1128 T872R1149/Q672L1151 T874G1048/Q674F1121 T874G1048/Q674F1246 T874G1048/Q674F1279 T874G1048/Q674J1019 T874G1048/Q674J1050 T874G1188/Q674F1295 T874G1345 T874R1103/Q674L1108 T874R1103/Q674L1173 T874R1244/Q674L1314 T874W1007/Q674L1256 70-6627 • 104