Lennox International Inc Gas-Fired Hot Water Boiler User Parameters Adjusting Settings, Display

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S9381A INTEGRATED BOILER CONTROL OPERATION AND ADJUSTMENTS

S9381A control has a number of user adjustable parameters as shown in Table 8.

Table 8 - User Parameters

Adjusting Settings

To discourage unauthorized changing of settings, a Figure 25 - Display procedure to enter the adjustment mode is required.

To enter the adjustment mode, press the UP, DOWN, and I buttons simultaneously for three seconds. Press and release the I button until the parameter requiring adjustment is displayed.

Then press the UP or DOWN button until the parameter has reached the desired value. After 60 seconds without any button inputs, the control will automatically return to the READ mode.

Display

In RUN mode, status items and parameters are viewable.

To read settings, press and release the I Key to ﬁnd the parameter of interest. For example, press and release I until setpoint (sp) is displayed, followed by a three- digit number, i.e., 220, followed by °F or °C. See Display Readout, Figure 25.

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Contents Installation Instructions Boiler Dimensions Introduction IntroductionGeneral Important Safety InformationNet Ahri Rating Shipping Flue Diameter SEA Level Ratings Natural and Propane Gases90 50/75/100 Series 2 Natural GAS Boilers for USE AT High Altitude United States Installations43331093 43331096 90 50/75 Series 2 Propane GASBefore Installing the Boiler Boiler SizingBoiler Location Considerations Extreme cold climate areas, use ¾ Armaﬂex or equivalent Boiler InstallationLocating The Boiler Combustion Air And Vent Pipe RequirementsFoundation Requirements Install boiler on level surfaceBoiler is not to be installed on carpeting Condensate Drain RequirementsClean the System First Near Boiler PipingSupply And Return Lines Single Zone Boiler Piping Two Zone Boiler Piping With Zone Valves Multi-Zone SystemsTwo Zone Boiler Piping With Circulators Page Page Page Safety Relief Valve Expansion Tank And Make-Up WaterTerminate pipe with plain end not threaded Diaphragm Type Expansion Tank Piping Conventional Closed Type Expansion Tank Piping Chilled Water Piping Reinstall vent drain lineCondensate Drain Piping Filling Condensate Trap With WaterElbow @ 3 ft. + 1 elbow @ 3 ft. = 6 equivalent ft. of pipe Combustion AIR and Vent PipeConnections And Termination ExampleBoiler Size InstallationRoof Vent / Intake Terminations Vent AIR IntakeLess Than 12 Clearance CombustionVent Air Concentric Vent TerminationsFeet minimum total equivalent length for all models Combustion Air and Vent Piping Boiler ConnectionsLeak Check Gas Piping Connecting The Gas PipingGAS Supply Piping Check Gas Supply365,000 Gas Pipe Sizes625,000 445,000Connect Circulator Pump Wiring Electrical WiringElectric Power Supply Thermostat InstallationWiring Schematic Ladder Wiring Diagram Page Ladder Diagram for Figure Controls and Accessories Circulator Pump Casting Temperature Safety Switch Drain Valve Draft InducerStart UP To Turn Off Gas To Appliance Operating InstructionsS9381A Integrated Boiler Control Operation and Adjustments User Parameters Adjusting SettingsDisplay State Code Deﬁnitions Sequence of Operation Check OUT Procedure and Adjustment Review All Instructions Set Thermostat To Desired Room TemperatureVR8205 Maintenance and Cleaning Annual Examination And Cleaning Of Boiler Components Igniter wires Gas valve wiresRemove draft inducer and gasket from top of ﬂue connector Initial Service Checks TroubleshootingError Codes Boiler Differential Pressure Differential AIR Pressure Switch CheckAluminum Series Clean System First Fill Water and ChemistryEliminate System Leaks General Guidelines When Using Antifreeze Antifreeze Products Boiler Model Serial # Date Installed Measured BTU/HR input Installation and CHECK-OUT CertificatePage Lennox Industries Inc. Dallas, Texas

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