Lochinvar 400 - 801 service manual Smart Control Module, Control outputs

Page 9

1Service (continued)

Control outputs

LOW VOLTAGE

CONNECTION

BOARD

SMART CONTROL

MODULE

Service Manual

ALARM BELL

LOUVER RELAY

RUN TIME CONTACTS

BUILDING MANAGEMENT

SYSTEM

BOILER PUMP

SYSTEM PUMP

DHW PUMP

IGNITOR

BLOWER

GAS VALVE

DISPLAY PANEL

PC INTERFACE

Image 9

Contents Models 400 Contents Please read before proceeding Handling ceramic fiber materialsNiosh stated First Aid When servicing boiler Service What is in this manual?Maintenance TroubleshootingNear boiler piping ServiceNavigation Dial Knight XL displayLOW Voltage Connection Board Control inputsControl outputs Smart Control ModuleGeneral Operation Access modesHow the boiler operates How the control module operatesOperation Display From previous page Sequence of Operation Button Screen Operation Display Status Display panel menu accessDisplay panel parameter access General Parameter tableSettings Reset Notification Viewable and changeable control parameters Temperature units C / FDate and Time Software VersionTemperature Settings Data LoggingFunctions DHW Settings Outdoor Reset Anti-Cycling Control modes SH Ramp DelayControlling Sensor BMS Thermostat Input Active / InactiveMinimum On/Off Time Cascade OffsetCirculation pumps Service Notification Maintenance Maintenance and annual startup Service technicianOwner maintenance Maintenance Check water system Flue vent system and air pipingCheck expansion tank Check boiler relief valveCheck all boiler wiring Check ignition ground wiringCheck control settings Inspect ignition and flame sense electrodesCleaning boiler heat exchanger Check flame signalReview with owner Model Kit Part Component Number DescriptionBefore troubleshooting TroubleshootingCheck control module fuses Check the followingNo Burner No DisplayOperation Unit Does NotTemperature Resistance Checking temperature sensorsWire Color R/BK and Y Wire Color G and Y Resistance TemperatureNo Pump NoisyBoiler Pump System Pump DHW PumpFlow Switch/LWCOFlame Fail Ign Anti-cyclingFlame Sequence Auto ResetHigh Limit Fan LowFail GV/RelayFan High Fan Speed HighDelta T High Flue Temp HighOutlet Temp HighService Blk Rem Ctrl FltParameters Progr No Error Stored Watch Dog ErrorLow 24 vac Write EEPromGas Valve Adjustment Combustion Analysis ProcedureOr Obstruction Gas Supply PressureGas valve adjustment procedure ModelModels 601 Page