Rheem RARL-JEC Installation Instructions - Page 19

COMFORT CONTROL2 SYSTEM™ CONTROL WIRING FIGURE 5 TYPICAL COMFORT CONTROL2 SYSTEM™ WIRING DIAGRAM Indoor Unit Communicating Thermostat 1 2RC 1 2 R C WIRING INFORMATION Line Voltage -Field Installed - - - - - -Factory Standard Outdoor Unit 1 2 R C • Line voltage must be present at the ICC for the compressor and the outdoor fan to operate • The ICC displays a "0" for standby mode. Standby mode indicates line voltage and 24VAC are present at the ICC and there is not a command for unit operation from the Comfort Control2 thermostat. Zero (0) displayed The unit is in standby Command for Compressor Operation (Y1 LED) • If a command for compressor operation is received by the ICC (first stage/second stage cooling or first stage/second stage heating), the red Y1 LED will illuminate. • The ICC has an on/off fan delay of one (1) second for each stage of heating or cooling. • The ICC ignores the low pressure control for the first 90 seconds of compressor operation. • The dual 7-segment LED displays five (5) operational status codes. 1) First Stage Cooling Operation - When the ICC receives a command for first stage cooling operation, a lower case "c" is displayed on the dual 7-segment LEDs. Lower case "c" indicates first stage cooling operation 2) Second Stage Cooling Operation - When the ICC receives a command for second stage cooling operation, an upper case "C" is displayed on the dual 7segment LEDs. Upper case "C" indicates second stage cooling operation 3-minute Anti-short Cycle Timer • The ICC has a built in 3-minute time delay between compressor operations to protect the compressor against short cycling. The dual 7-segment LEDs will flash "c" or "C" while the short cycle timer is active and a command for unit operation is received. 19