Honeywell Heat/1Cool User Guide - Page 93
Pcb, Pfa, Pgb, Pga Heating Changeover After 11/85 Rpcb, Rpfa
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RHEEM/RUUD PCB, PFA, PGB, PGA HEATING CHANGEOVER (AFTER 11/85) RPCB, RPFA Electromechanical Chronotherm® III Electronic Replacement or Upgrade Chronotherm IV T841A1308 Y594R1425 Y5Y95494G1G4174619 T8T681611G11R0100400 T8T481411R11R0120802 T8T5815111G1G0140721 T8T081011R11R0110406 T8T6816111G2G0220802 W890P0CB8190000/2 Function Existing Terminals Common ¿ X X X X C C C C C C Power R Compressor Y 1st Stage - Heat Aux. Heat W2 Fan G C/O Valve B Heat C/O Valve O Cool System L Monitor R R R R or Y Y1 Y1 Y1 Y ´ ´ ´ - W1 W1 W1 W2 W2 W2 W2 µ µ G G G G B B B B O O - O ¾ ¾ ¾ µ L L X1 L R R R R R Y ´ W1 Y1 ´ W1 Y ´ W1 Y1 ´ W1 Y1/W1 - · W2 W2 W2 W2 Aux. G G G or ³ B B O/B B or ³ O O O/B O G or ³ B O/B ³ or O O/B G ³ O/B ³ O/B µ ¾ µ L L L ¾ ¾ L L Em. Heat E E E E E E E E E E Multiple Aux. - Heat Loads » LED Indication - 2nd Stage - Compressor º W3 W3 º º º - X2 ¶ X2 ¶ X1 X2 ² - - - - - - - - º º - X1 X2 - - º - · 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. ¿ Terminal must be connected to the transformer common. ´ Do not remove factory-installed jumper. - - - - - Y2 ² Optional Check LED on T8611G1004. See Fig. 26. ¶ Field-installed X2 to X (C) jumper. º If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. ¾ LED is energized when terminal is powered. µ L terminal is powered continuously when thermostat is in Em. Ht. position. M13206 70-6627 • 91