Lochinvar 400-801 operation manual Model

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Outdoor Knight XL Installation & Operation Manual

The Outdoor Knight XL - How it works... (continued)

Model 400

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Front View - Model 400

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Rear View - Model 400

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Left Side (inside unit) - Model 400

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Right Side (inside unit) - Model 400

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Contents

Outdoor Knight XL Models 400 Contents Please read before proceeding When servicing boilerStainless steel heat exchanger Outdoor Knight XL How it worksModel Models 601 Outdoor Knight XL Boiler Ahri Rating RatingsBefore locating the boiler, check Installation must comply withDetermine boiler location Outdoor vent / air intake location Provide clearancesFlooring and foundation Prevent combustion air contaminationRemove boiler from wood pallet Install ﬂue pipe assembly Models 400Prepare boiler Models 701 3Install ﬂue pipe assembly Models 701Gas conversions Model 4Installing Propane Oriﬁce ModelLeveling the boiler Models 601Hydronic piping TEE with 1 Fitting on TOP Nipple Close Nipple Near boiler piping components Flow switch adjustmentVariable speed pump option Near boiler piping connectionsCirculator sizing 20F 25F 30F 35F Model Head FeetPressure 7Single Boiler Multiple Temperatures 8Single Boiler Primary/Secondary Piping Manifold Pipe Sizes in Inches mm Number of Units10Multiple Boilers Primary/Secondary Piping Temperature Wires to Loop Sensors 120VAC to Gas connections Connecting gas supply pipingPropane Gas Natural gasInches Check inlet gas supplyGas pressure Gas valve replacementInstallation must comply with Field wiringLine voltage connections Low voltage connectionsHigh gas pressure switch Outdoor temperature sensorLow gas pressure switch ThermostatAlarm contacts Flow switchWiring of the cascade ModBus3Low Voltage Field Wiring Connections Condensate drain Condensate disposalStart-up Freeze protection when usedCheck/control water chemistry Fill and test water systemCheck thermostat circuits Check for gas leaksInspect/ﬁll condensate system Inspect/check condensate lines and ﬁttingsStart the boiler Final checks before starting the boilerIf boiler does not start correctly Check system and boilerFor Your Safety Read Before Operating Natural Gas Propane Set space heating operationConﬁguration of the cascade Verify DHW modeSet domestic hot water DHW operation General Operating informationHow the boiler operates How the control module operatesProtection features Temperature controlBoiler temperature regulation Cascade Outdoor reset operation, if usedOperation Display Sequence of operationStandby, ready to start a new cycle Installer Access modesOutdoor Knight XL control module UserCall for Heat Information Dial Function Owner maintenance Maintenance Maintenance and annual startupService technician 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 Inspect ignition and ﬂame sense electrodesCleaning boiler heat exchanger Check ﬂame signalReview with owner Model Kit Part Component Number DescriptionHigh Voltage Diagrams2Ladder Diagram