Lochinvar 81-286 service manual Smart Control Module, Control outputs

Page 9

1 Service (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

9

Image 9

Contents

Models 81 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 boiler 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 accessButton Screen Status Operation Display Display panel parameter accessDescription See User Access Installer Access Display Modify Parameter tableMenu DHW Settings Resetoutdoor Description See User Access Installer Access Display ModifyBMS Service Notification Viewable and changeable control parameters Temperature units C / FTime and Date Software VersionTemperature Settings Data LoggingFunctions DHW Settings Outdoor Reset Anti-Cycling Control modes Ramp SettingsControlling Sensor BMS Thermostat InputMinimum On/Off Time Cascade OffsetCirculation pumps Service Notification Maintenance Maintenance and annual startup Service technicianInstructions 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 Check flame signalReview with owner Cleaning boiler heat exchangerOiled bearing circulators Kit Part Component Number DescriptionBefore troubleshooting TroubleshootingCheck control module fuses Check the followingNo Burner No DisplayOperation Unit DoesChecking temperature sensors Temperature Resistance Temperature ResistanceResistance Temperature No Pump NoisyBoiler Pump System Pump DHW PumpTroubleshooting Open Temp SwApplies to the 286 Model Only Anti-cyclingFlame Sequence Cont’dOutlet Mrhl Outlet ArhlFan Speed Low Fan Low/HighHigh GV/RelaySensor Shorted FaultLouver Proving Inlet SensorFatal Error Flue Sensor FaultMemory Error Flue Temp DiffFlue Temp High Delta T HighOutlet Temp Service Blk Rem Ctrl FltParameters Progr Combustion Analysis Procedure Gas Valve Adjustment Gas valve adjustment procedureOr Obstruction Gas Supply Pressure

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