Manuals / Lochinvar / Household Appliance / Boiler

Lochinvar 3.5, 1.5, 2.5 service manual FB-SERRev B 7/11

Models: 3.5 2.5 1.5

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Revision Notes: Revision A (ECO #C08179) initial release.

Revision B (ECO C08436) reflects changes made to the parameter table, notice added to the parameter descriptions, changed out the screens on FIG.’s 1-8 and 1-14.

FB-SER Rev B 7/11

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Lochinvar 3.5, 1.5, 2.5 service manual FB-SERRev B 7/11

Contents

Models Contents Hazard definitionsDANGER Please read before proceeding Handling ceramic fiber materialsREMOVAL OF COMBUSTION CHAMBER LINING NIOSH stated First AidWhen servicing boiler Boiler operationBoiler water Freeze protection fluidsWhat is in this manual? ServiceMaintenance Troubleshooting1 Service Boiler piping1 Service continued Home ScreenSMART CONTROL MODULE Control inputs1 Service Control outputs SMART CONTROL MODULELOW VOLTAGE CONNECTION BOARD LINE VOLTAGEGeneral Operation 1 ServiceAccess modes Figure 1-3 Password ScreenTo adjust and save parameters reference FIG Figure 1-4 Setup ScreenFigure 1-5 Initial Setup Screen Table 1A Sequence of Operation Sequence of operation1 Service Parameter table 1 Service Parameter tableDELAY RAMPSETUP Parameter tableSETBACK SH NIGHT1 Service Parameter tableSETBACK HWG NIGHTParameter table PUMPSViewable and changeable control parameters 1 ServiceA Initial Setup B Set PointsC Outdoor Reset Figure 1-6 Outdoor Air Reset Curve1 Service Shift OA Reset CurveRamp Delay Enable / Disable D Ramp DelayF Advanced Setup E BMS1 Service G/H SH/HWG Night SetbackI ModBus J CascadeCascade Offset Minimum On/Off Time1 Service K PumpsL Service Notification Service Notification in MonthsService Notification Running Hours Service Notification Cycles1 Service Cascade Screen Figure 1-8 Cascade ScreenFigure 1-10 Graph Screen Graph ScreenFigure 1-9 Graph Screen Parameter Selection Figure 1-12 Graph Screen Blocking Faults 1 Service History ScreenFigure 1-11 History Screen Lockout Faults History Screen Figure 1-13 History Screen Runtime HistoryService Screen Figure 1-14 Service Screen2 Maintenance Maintenance and annual startup Service technicianOwner maintenance see the following pages for instructions2 Maintenance Address reported problemsClean condensate trap Inspect boiler area2 Maintenance continued Flue vent system and air pipingCheck water system Check expansion tankCheck ignition ground wiring Check all boiler wiringCheck control settings Check flame signalCleaning boiler heat exchanger Review with owner2 Maintenance continued Handling ceramic fiber materials3 Troubleshooting Before troubleshootingCheck the following Check control module fuses3 Troubleshooting continued FAULTCAUSE CORRECTIVE ACTIONTable 3E - Flue Sensor Resistance vs. Temperature Checking temperature sensors3 Troubleshooting 3 Troubleshooting continued FAULTTable 3F Troubleshooting Chart - Noisy System CAUSEFAULT DESCRIPTIONCORRECTIVE ACTION 3 Troubleshooting3 Troubleshooting continued FAULTDESCRIPTION CORRECTIVE ACTION3 Troubleshooting FAULTDESCRIPTION CORRECTIVE ACTION3 Troubleshooting continued FAULTDESCRIPTION CORRECTIVE ACTION3 Troubleshooting FAULTDESCRIPTION CORRECTIVE ACTIONTroubleshooting continued DESCRIPTIONFAULT CORRECTIVE ACTION3 Troubleshooting FAULTDESCRIPTION CORRECTIVE ACTION3 Troubleshooting continued FAULTDESCRIPTION CORRECTIVE ACTION3 Troubleshooting FAULTDESCRIPTION CORRECTIVE ACTION3 Troubleshooting continued FAULTDESCRIPTION CORRECTIVE ACTION3 Troubleshooting FAULTDESCRIPTION CORRECTIVE ACTION3 Troubleshooting continued FAULTDESCRIPTION CORRECTIVE ACTIONCombustion Analysis Procedure POSSIBLE CAUSE3 Troubleshooting CORRECTIVE ACTIONGas valve adjustment procedure 3 Troubleshooting continuedFigure 3-2 Gas Valve Adjustment Models 1.5 and Figure 3-3 Gas Valve Adjustment ModelPage Page FB-SERRev B 7/11