Honeywell Heat/1Cool User Guide - Page 48
Crispaire/marvair
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CRISPAIRE/MARVAIR Electromechanical Chronotherm® III Electronic Replacement or Upgrade Chronotherm IV T841A1308 Y594R1797 Y594G1633 T8T681611G11R0100400 T8T481411R11R0120802 T8T581511G11G0140721 T8T081011R11R0110406 T8T681611G12G0220802 W890P0CB8190000/2 Function Existing Terminals Common ³ X X X X C C C C C C Power R R R R R R R R R R Compressor Y Y Y Y Y1 or Y Y Y1 Y Y1 Y1/W1 » » » » » 1st Stg. Heat - - - - W1 W1 W1 W1 W1 - · Aux. Heat W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux. Fan G G G G C/O Valve B B B B Heat C/O Valve O O O O Cool ¿ G B O ¿ G B ¿ G ´ B or O/B ´ O O or O/B ¿ G ¿ G ´ B B or O/B O O or ´ O/B G¿ ´ O/B ´ O/B ² ² ² ¶ ¶ ² ¶ ² ² System Monitor/ A L L L L L L L L L System Defrost EM. Heat E E E E ¿ ¿ ¿ ¿ ¿ ¿ E E E E E E 2nd Stage - - - - Compressor ³ Terminal X or C must be connected to transformer common. · When W2 is not used, configure W2 cycle rate to NC. » Do not remove factory-installed jumper. ¿ To eliminate automatic fan in emergency heat mode, connect switching relay as shown on page 9. · - - - - - W2 ´ Configure O/B (select models) in Installer Setup. ² LED is energized when terminal is powered. ¶ L terminal is powered continuously when thermostat is in Em. Ht. position. M13151 70-6627 • 46