Lochinvar 51-211 operation manual

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Revision A (ECO #C05747) initial release. Reflects the new model numbers for the Knight Wall Mount upgrade.

Revision B (ECO #C06188) reflects updates made to the ladder and wiring diagrams (ECO #C06158).

Revision C (ECO #C06234) reflects changes made to the Service Reminder feature.

Revision D (ECO #C08222) reflects the new layout in InDesign, the addition of the rope gasket, along with changes to the water pipe clearances from 1" to a 1/4" (ECR #R04077), pages 7, 8, and 33.

Revision E (ECO #C09161) reflects additional information added to the humidity warning on page 7, along with updates made to the SMART SYSTEM control (ECR #R04523).

Revision F (ECO #C09803) reflects the addition of the new Polypropylene Vent material section, rearranging the venting section, and the addition of the AHRI and ASME logos (R05009).

Revision G (ECO #C10143) reflects updates made to the ignition timing information.

Revision H (ECO #C10297) reflects the removal of a venting notice on page 16.

Revision I (ECO #C10450) reflects changes made to Table 10A on page 61.

WBII-I-O Rev I 05/12

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Contents Models 51 Contents When servicing boiler Please read before proceedingKnight Wall Mount Boiler How it works Stainless steel heat exchanger Gas connection pipeModels 51 Ratings Knight Wall Mount Boiler Ahri RatingInstallation must comply with Closet and alcove installationsDetermine boiler location Before locating the boiler, check1Closet Installation Minimum Required Clearances Precautions Vent and air pipingWall mounting location Prevent combustion air contaminationAreas likely to have contaminants When using an existing vent system to install a new boilerProducts to avoid When removing a boiler from existing common vent system Gas conversions Prepare boilerRemove boiler from wood pallet Mounting the boiler Mounting to a wood studded wallMounting to a concrete wall Mounting to a metal studded wallDirect venting options Vertical Vent General ventingDirect venting options Sidewall Vent Install vent and combustion air piping Air intake/vent connectionsLength Requirements for installation in CanadaSizing Materials Air inlet pipe materialsModel Kit Number Optional room airAir contamination Primer Material StandardVent fittings Polypropylene Centrotherm InnoFlue SWStainless steel vent Approved Stainless Steel Vent Manufacturers Make ModelFlue Flue Intake Air Adapter TerminationIf using the alternate sidewall termination Sidewall direct ventingVent/air termination sidewall Determine location2AClearance to Gravity Air Inlets Prepare wall penetrations Prepare wall penetrations Alternate Field Supplied OptionMultiple vent/air terminations 5AMultiple Vent Terminations must also comply with -1ADescription and usage Sidewall termination installationSidewall termination optional concentric vent 8Concentric Vent Dimensional Drawing Sidewall termination optional concentric vent models10Concentric Vent Sidewall Attachment Multiventing sidewall terminationsVertical direct venting Vent/air termination verticalPrepare roof penetrations 2Vertical Terminations with Multiple BoilersVertical termination installation Vertical termination optional concentric ventMultiventing vertical terminations Minimum Combustion AIR TypicalAlternate vertical concentric venting Concentric Venting ArrangementExisting vent as a chase AIR Inlet Flue Exhaust Seal CAP Existing Flue OutletHydronic piping System water piping methods General piping informationLow water cutoff device Chilled water systemNear boiler piping components Near boiler piping connections Circulator sizingPump Size Grundfos ArmstrongSmart System / Multi-temperature loop control option Variable speed pump setupVariable speed pump option UP26-96 FC/VS IFC VS Stratos 1.25 3 x3Single Boiler Single Temperature Zoned with Circulators Number of Units 5Single Boiler Multiple Temperatures Required Pipe Sizes Model 8Single Boiler Zoned with Valves Model Number of Units 10Single Boiler Non-Zoned Primary/Secondary Piping Connecting gas supply piping Gas connectionsNatural gas Propane GasLength of Pipe in Straight Feet for 1/2 PSI Natural Gas Pipe Capacity ChartCheck inlet gas supply Gas valve replacement Gas PressureField wiring Installation must comply withLine voltage connections Low voltage connectionsOutdoor temperature sensor Louver proving switchFlow switch ThermostatAlarm contacts Wiring of the cascadeSystem supply sensor Boiler management system4Low Voltage Field Wiring Connections Condensate disposal Condensate drainFreeze protection when used Start-upCheck/control water chemistry Fill and test water systemClean/Inspect Trap Assembly Check for gas leaks Check thermostat circuitsInspect/fill condensate system Inspect/check condensate lines and fittingsFinal checks before starting the boiler Start the boilerIf boiler does not start correctly Check system and boiler2Operating Instructions Set space heating operation Natural Gas PropaneSet domestic hot water DHW operation Verify DHW modeConfiguration of the cascade Operating information GeneralHow the boiler operates How the control module operatesTemperature control Protection featuresBoiler temperature regulation Outdoor reset operation, if used CascadeSequence of operation Operation DisplayUser Access modesInstaller Knight wall mount boiler control module 1Control PanelCall for Heat Operating information Dial Function Owner maintenance Maintenance Maintenance and annual startupService technician Maintenance Check ignition ground wiring Check all boiler wiringCheck control settings Check expansion tankReview with owner Check flame signalCleaning boiler heat exchanger Heat Exchanger Cleaning Kits Oiled bearing circulatorsDiagrams PC Interface2Wiring Diagram

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