Lochinvar 399 - 800 service manual Knight XL display, Menu / Exit UP Down

Page 7

1Service (continued)

The Knight XL display

Hold 5 seconds to enter code Input Mode (Menu Mode)

Press to move up one level in Menu Mode or to exit

Menu Mode

MENU / EXIT

UP DOWN

Press to change boiler water temperature set point during normal operation

Press to change displayed data values in Menu Mode

Press to navigate through menu listing in Menu Mode

Service Manual

• Press to turn boiler off or

back on

SHUTDOWN

• Press to select a menu item

 

Press after parameter programming to store parameter data

• Press to exit Service Mode

ENTER / RESET

 

 

 

 

 

 

DISPLAY SCREEN

SERVICE

BUTTON

PC

CONNECTION

PORT

PREVIOUS NEXT

Press to toggle display during normal operation to show outlet and return temperatures, fan speed, and flame signal

Press to toggle between digits when entering access code or between hour, minutes, etc., when entering date and time

7

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Contents Models 399 Contents Handling ceramic fiber materials Please read before proceedingNiosh stated First Aid When servicing boiler Troubleshooting What is in this manual?Service MaintenanceNear boiler piping ServiceMenu / Exit UP Down Knight XL displayControl inputs Control outputs Smart Control ModuleSequence of operation General OperationHow the boiler operates How the control module operatesBLR Ignition Sequence of operationBLR SH 41% Rate Use this procedure to access menus from the display panel Display panel menu accessValue will appear Display panel parameter accessParameter table Temperature DataControl Circulation Service Viewable and changeable control parameters Temperature settingsFunctions DHW settingsOutdoor air reset Data loggingMinimum SH set point Maximum air temperatureShift reset curve Maximum SH set pointAnti-cycling Boiler cascade address Control modesSH controlling sensor SH sourceCascade offset Service NotificationCirculation pumps Service technician Maintenance Maintenance and annual startupOwner maintenance Maintenance Check boiler relief valve Flue vent system and air pipingCheck water system Check expansion tankInspect ignition and flame sense electrodes Check ignition ground wiringCheck all boiler wiring Check control settingsCleaning boiler heat exchanger Check flame signalReview with owner Check the following TroubleshootingBefore troubleshooting Check control module fusesUnit Does Not No DisplayNo Burner OperationTemperature Resistance Checking temperature sensorsSystem Pump NoisyNo Pump Operation Boiler PumpSequence Switch/LWCOFlow FlameNo Flame Ign Anti-cyclingRunning No FlameFan Speed Low Adjustable HighLimit w/Manual Fan LowSensor Shorted Fan HighFan Speed High Sensor OpenTemp O/Shoot Open Rem Ctrl FltParameters ProgrLow 24 VAC Service BlkWatch Dog Error No Error StoredGas Supply Pressure Combustion Analysis ProcedureGas Valve Adjustment Or ObstructionModel Gas valve adjustment procedureModels 600 Page Page KBX-SER Rev E
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399 - 800 specifications

Lochinvar is known for its cutting-edge water heating and boiler systems, and the Lochinvar 399 - 800 series is no exception. Specifically designed for commercial applications, this series brings advanced technology and engineering to the forefront of hydronic heating solutions.

One of the standout features of the Lochinvar 399 - 800 series is its impressive efficiency. Equipped with a condensing design, these boilers utilize high-efficiency stainless steel heat exchangers that allow for maximum heat transfer while minimizing energy consumption. With an impressive thermal efficiency of up to 96%, the Lochinvar 399 - 800 series stands out in its class, offering significant energy savings and reduced operational costs over time.

Another key characteristic of this series is its robust construction. Designed with longevity in mind, the boilers are built using high-quality materials that withstand extreme temperatures and pressures. The stainless steel design not only enhances durability but also combats corrosion, ensuring a long service life and reduced maintenance costs for users.

The Lochinvar 399 - 800 series also incorporates advanced control technologies. With its intuitive control system, users can easily adjust and monitor heating parameters, ensuring optimal performance and comfort. The integrated Control Wizard feature simplifies the setup process, allowing for quick commissioning and troubleshooting. Additionally, the optional Lochinvar SMART CONTROL technology provides remote monitoring capabilities, allowing operators to keep track of system performance from anywhere.

Versatility is another hallmark of the Lochinvar 399 - 800 series. These boilers come in a range of sizes, with the ability to modulate output based on real-time heating demands. This flexibility ensures that systems can operate efficiently under varying load conditions, making them ideal for schools, hospitals, and commercial buildings requiring consistent hot water availability.

In summary, the Lochinvar 399 - 800 series exemplifies modern boiler technology, combining energy efficiency, durability, advanced controls, and versatility. As businesses and facilities seek to enhance their heating systems, the Lochinvar 399 - 800 offers a reliable and forward-thinking solution for today's energy-conscious environment. Investing in this state-of-the-art boiler system not only improves comfort but also fosters sustainability and cost-effectiveness in commercial heating applications.