Honeywell Heat/1Cool User Guide - Page 110

WHITE RODGERS TYPICAL 1F92-1, 1F92-6, 1F92-7, 1F58-910 THERMOSTAT, S28 SUBBASES Electromechanical Chronotherm® III Electronic Replacement or Upgrade Chronotherm IV T841A1712 Y594R1425 Y5Y9549G41G4174619 TT8T86861611111MG7R10100008040 T8511M1002 T8T6816111M2M0220517 W890P0CB8190000/2 Function Existing Terminals Common ´ or X1 C X X X C C C C Power R R R R R R Compressor or Y Y1 Y or Y Y1 Y Y1 Y1 · · · 1st Stage W1 - Heat W1 W1 W1 - Aux. Heat W2 W2 W2 W2 W2 ² 3rd Stage Aux. Heat » W3 W3 W3 R R Y1 Y1/W1 - - ¸ ² W2 W3 Aux. ¸ Fan G G 2nd Stage Cool » Y2 » C/O Valve B B Heat C/O Valve O O Cool System Monitor/ L» - System Defrost » Em. Heat E E G G B B O O Lº - E E G Y2 B O ¾ L E G Y2 ³ O/B ³ O/B Lº E G Y2 ³ O/B ³ O/B L¾ E G Y2 ³ O/B ³ O/B Lº E Multiple Aux. - W3 W3 W3 - - Heat Lads ¿ LED Indication - - X2 ¶ X1 X2 µ X1 X2 µ - - - X1 X2 µ - ³ Configure O/B (select models) in Installer Setup. · Do not remove factory-installed jumper. » If provided on original equipment. ¿ Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. ´ Terminal must be connected to the transformer common. ² If 2nd stage heat is auxiliary (electric resistive), connect auxiliary stage to W3. ¶ 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 Optional LED indication activated with completed circuit on X1 and X2 terminals. ¸ When 3rd Stage aux. heat is not used, leave W2 blank and wire auxiliary heat to aux. terminal. Configure W2 to NC in installer setup. M13141 70-6627 • 108