Bristol Scroll Compressors - Desco Energy

START ASSIST WIRING DIAGRAM (START AND RUN CAPACITORS):RUNCAPACITORPOTENTIALRELAYLINELINE2RCS15IDENTIFIEDTERMINALTO LINE SIDESTARTCAPACITORBLEEDRESISTORUse this diagram on systems with expansion valve and systems that don't allow pressure equalizationprior to compressor start.NOTE: WHEN CRANKCASE HEATER IS USED, CONNECT TO INCOMING POWER LINESO THAT HEATER IS ENERGIZED CONTINUOUSLY.PERMANENT SPLIT CAPACITOR (PSC) WIRING DIAGRAMLINERUNCAPACITORLINECRSIDENTIFIED TERMINALTO LINE SIDEUse this diagram on systems that allow pressure equalization prior to compressor start.NOTE: WHEN CRANKCASE HEATER IS USED, CONNECT TO INCOMING POWER LINESO THAT HEATER IS ENERGIZED CONTINUOUSLY.START ASSIST WIRING DIAGRAM (PTCR AND RUN CAPACITOR):LINERUNCAPACITORLINECRSIDENTIFIED TERMINALTO LINE SIDEUse this light start assist in case of a slight low voltage condition with equalized pressures prior tocompressor start.NOTE: LIGHT START ASSIST (PTCR) IS REQUIRED ON SOME HIGH EFFICIENCYCOMPRESSORS (SEE BOTTOM OF PAGE 9) EVEN WHEN THE SYSTEMEQUALIZES. NOT REQUIRED WHEN A START ASSIST KIT IS USED (RELAY,START CAPACITOR).Page 8