User ManualTable of ContentsROUGH-IN DIMENSIONS2Closed System13FOREWORD2Water (Potable) Heating & Space Heating13FEATURES3Heater Wiring14Water Temperature Control3OPERATION15High Limit Switch (E.C.O.)4Sequence of Operation15Dishwashing Machine Requirement4Self Diagnostic Controller15Circulating Pump4Gas Value LEDs Flashing15INSTALLATION INSTRUCTIONS4Error Codes16Required Ability4Fault Conditions16Insulation Blankets4No Incoming Line Voltage16Locating The Heater5No Low Voltage16Clearances5Temperature Probe Fault16Hard Water5E.C.O. Switch Open17Air Requirements6Control Bad17Mechanical Exhausting of Room Air6Combustion Air Blockage17Unconfined Space6PRIOR TO START-UP18Confined Space6Required Ability18Chemical Vapor Corrosion6OPERATING INSTRUCTIONS18VENTING6Adjustment Procedure (Initial Start-Up)18Vent Pipe Termination6Lighting Instructions19Direct Venting7Cathodic Protection20Direct Vent Terminal Installation8Precautions20Installation Sequence8GENERAL INFORMATION20Vertical Vent Terminal Installation9Power Burner20Installation Sequence9High Limit20Installation of Vent System10High Altitude Installations20Vent Pipe Preparation10MAINTENANCE20CONTROLS AND SWITCHES11General20Blower Prover Switch11Maintenance Schedule20Blocked Outlet Prover Switch11Flushing21Blocked Inlet Prover Switch11Draining21Low Gas Pressure Switch11Sediment Removal21On/Off Switch11Lime Scale Removal21Hot Surface Igniter11Powered Anode System21GAS PIPING12Drain Valve and Access Panels22Connection of Gas Pipe12Relief Valve22Purging13Internal Circulating Pump22Gas Meter Size - City Gases Only13Vent System22Gas Pressure Regulation13INSTALLATION DIAGRAMS23Gas Valves13Manifold Kits28SYSTEM CONNECTIONS13CHECKLIST AND SERVICE INFORMATION29Thermometers13TROUBLE-SHOOTING29Relief Valve13REPLACEMENT PARTS30Water Line Connections13LIMITED WARRANTY31Size: 668 KBPages: 36Language: EnglishOpen manual
