Honeywell Heat/1Cool User Guide - Page 112
Typical Thermostats And Subbases - Honeywell Model Number
View all Honeywell Heat/1Cool manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 112 highlights
WILLIAMSON HEATING CHANGEOVER Electromechanical Chronotherm® III Electronic Replacement or Upgrade Chronotherm IV T841A1712 Y594R1425 Y5Y9549G41G4174619 T8T6816111G1R0100400 T8T481411R11R0120802 T8T581511G11G0140721 T8T081011R11R0110406 T8T681611G12G0220802 W890P0CB8190000/2 Function Existing Terminals Common ´ X X X X C C C C C C Power R Compressor Y1 1st Stage - Heat Aux. Heat W2 R R R R R R R R R or Y Y1 Y Y1 Y1 Y Y Y1 Y Y1 Y1/W1 ² ² ² ² ² ² ² - W1 W1 W1 W1 W1 W1 W1 - µ W2 W2 W2 W2 W2 W2 W2 W2 Aux. Fan G C/O Valve W1 Heat C/O Valve - Cool System Monitor/ L System Defrost G G G G G G G G G ¾ or ¾ or ¾ B B B B B B O/B B B O/B O/B ¾ or ¾ or ¾ O O O O O O O/B O O O/B O/B ³ ³ · · ³ · ³ ³ L X1 L L L L L L Em. Heat E E E E E E E E E E Multiple Aux. Heat Loads » W3 LED Indication - 2nd Stage - Compressor W3 W3 W3 ¿ ¿ ¿ - X2 º X2 º X1 X2 ¶ - - - - - - - - ¿ ¿ ¿ - X1 X2 - µ - - W2 2nd Stage - - - - - - - - - Y2 Cool ³ LED is energized when terminal is powered. · L terminal is powered continuously when thermostat is in Em. Ht. position. » Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. ¿ If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. ´ Terminal must be connected to the transformer common. ² Do not remove factory-installed jumper. ¶ Optional LED indication with completed circuit on X1 and X2 terminals. º Field-installed X2 to X (C) jumper. ¾ Configure O/B (select models) in Installer Setup. µ When W2 is not used, configure W2 cycle rate to NC. M13214 70-6627 • 110 TYPICAL THERMOSTATS AND SUBBASES - HONEYWELL MODEL NUMBER T874N1008/Q674F1196