A.O. Smith GB/GW-300, 500, 750 SERIES, 650 warranty

Series 400, 401, 402, 403, 404 14-18Lighting Instructions for the GB/W 300 through 750 models Lighting Instructions Risk of ScaldsBurner System Inputs To CCB and FCBCCB Drawing #211758 FCB Drawing #211759 PDB Drawing #211760 CCB/FCB Indicator Lamps & Fuses Line Polarity Indicator & Fuse ProtectionOutputs from CCB and FCBs IgnitersFCB Eight position Dipswitch GB/LBTemperature Setpoints System Control Algorithm UIM Operating ProceduresStages 1 and 2 will turn on in sequence from 1 to Description of CCB control states Description of FCB control states Idle StateOperating Setpoint Operating Differential SetpointConnection Diagram Drawing #211769 Page UIM Touch Switches Fault Displayed Description Red LED Lockout HardSoft See below Other troubleshooting hints Page Page Page NEW Boiler Limited Warranty