Lochinvar 51-211 operation manual Access modes, User, Installer

Page 68

Installation & Operation Manual

11 Operating information

Sequence of operation (continued)

OPERATION

DISPLAY

8.If the space heating call for heat is active, and the tank thermostat or sensor starts a DHW call for heat, the boiler will switch to the DHW mode. If programmed for normal DHW operation (not as a zone), the DHW pump will turn on first, then the boiler pump will turn off (boiler and DHW pump operation briefly overlap to ensure flow is maintained through the unit). This will divert the boiler’s outlet water from the heating system and send it to the tank coil instead. The control will then modulate to maintain the outlet temperature to the DHW boiler set point.

9.If the boiler is not part of a Cascade, and both the space heating and DHW calls for heat remain active long enough, the boiler will switch back and forth between the two heating modes until one of them is satisfied.

10.Once both calls for heat are satisfied, the control will turn off the burner. The blower will continue to run during the postpurge period.

11.Any pumps that are running will continue to run for their respective pump delay times before turning off, unless programmed to remain on continuously. A 60 second anti-cycle period will start, which will delay any new call for heat until it times out.

12.In Standby, ready to start a new cycle.

Access modes

User

The user can adjust space heating and tank target temperatures by pressing the NAVIGATION dial when “SETPOINTS” is flashing at the bottom of the display. The date and time, and the temperature units can also be changed (see page 62).

Installer

Most parameters are available only to the installer, accessible by entering the installer password, see the Knight Wall Mount Service Manual.

Saving parameters (reference the Parameter Table in the Knight Wall Mount Service Manual)

NOTICE

Please note that the brackets ([]) denote

 

screen status.

 

To save parameters and exit programming:

Press the RIGHT SELECT [SAVE] key and then press the RIGHT SELECT [HOME] key.

To enter a parameter and continue programming:

Press the RIGHT SELECT [SAVE] key 1 time to return to the parameter listings; press again to return to the menu listings. Remember to press the RIGHT SELECT [HOME] key when finished programming in order to save the changes made.

See the Knight Wall Mount Service Manual for a detailed description of parameters and access modes.

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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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