User ManualTable of ContentsROUGH-IN DIMENSIONS2FOREWORD2INSTALLATION INSTRUCTIONS4Direct Venting8Control and Switches11On/Off Switch11GAS PIPING11Thermometers13Relief Valve13Water Line Connections13SYSTEM CONNECTIONS13Heater Wiring14USING THE ELECTRONIC CONTROLLER15Overview15Operating States15Adjusting the Operating Set Point16Changing the Display Units17Fault and Warning Conditions17Access to the Current Fault or Warning17Viewing the Fault History18PRIOR TO START-UP18Required Ability18OPERATING INSTRUCTIONS19Adjustment Procedure (Initial Start-Up) 120 and 150 Models19Adjustment Procedure (Initial Start-Up) 199 and 250 Models19Cathodic Protection20Precautions20GENERAL INFORMATION20Power Burner20High Limit20High Altitude Installations20MAINTENANCE20General20Maintenance Schedule20Flushing23Draining23Sediment Removal23Lime Scale Removal23Drain Valve and Access Panels24Relief Valve24Circulating Pump24Vent System24INSTALLATION DIAGRAMS25Manifold Kits30CHECKLIST AND SERVICE INFORMATION31TROUBLE-SHOOTING31LIMITED WARRANTY33Size: 1.01 MBPages: 36Language: EnglishOpen manual
