Lochinvar 400 - 801 specification

NOTES

47

Image 47

Lochinvar 400 - 801 service manual

Contents

Models 400 Contents Niosh stated First Aid Please read before proceedingHandling ceramic fiber materials When servicing boiler Troubleshooting What is in this manual?Service Maintenance Near boiler piping Service Navigation Dial Knight XL display LOW Voltage Connection Board Control inputs Control outputs Smart Control Module How the control module operates Access modesGeneral Operation How the boiler operates Operation Display From previous page Sequence of Operation Button Screen Operation Display Status Display panel menu access Display panel parameter access General Parameter table Settings Reset Notification Software Version Temperature units C / FViewable and changeable control parameters Date and Time Functions Temperature SettingsData Logging DHW Settings Outdoor Reset Anti-Cycling BMS Thermostat Input Active / Inactive SH Ramp DelayControl modes Controlling Sensor Minimum On/Off Time Cascade Offset Circulation pumps Service Notification Owner maintenance Maintenance Maintenance and annual startupService technician Maintenance Check boiler relief valve Flue vent system and air pipingCheck water system Check expansion tank Inspect ignition and flame sense electrodes Check ignition ground wiringCheck all boiler wiring Check control settings Model Kit Part Component Number Description Check flame signalCleaning boiler heat exchanger Review with owner Check the following TroubleshootingBefore troubleshooting Check control module fuses Unit Does Not No DisplayNo Burner Operation Resistance Temperature Checking temperature sensorsTemperature Resistance Wire Color R/BK and Y Wire Color G and Y DHW Pump NoisyNo Pump Boiler Pump System Pump Flow Switch/LWCO Flame Fail Ign Anti-cycling Fan Low Auto ResetFlame Sequence High Limit Fan Speed High GV/RelayFail Fan High High Flue Temp HighDelta T High Outlet Temp Parameters Progr Service BlkRem Ctrl Flt Write EEProm Watch Dog ErrorNo Error Stored Low 24 vac Gas Supply Pressure Combustion Analysis ProcedureGas Valve Adjustment Or Obstruction Models 601 Gas valve adjustment procedureModel Page