Lochinvar 399 - 800 service manual What is in this manual?, Service, Maintenance, Troubleshooting

Page 5

What is in this manual?

Service

Near boiler piping

• Typical system components

The Knight XL display

• Display panel readout, buttons and their functions

Control module inputs

• Control module inputs and options

Control module outputs

• Control module outputs and options

General

•How the boiler operates

•How the control module operates

•Access modes -- user and installer

•Sequence of operation -- Domestic Hot Water (DHW)/space heating

Control panel menu access

•Accessing programming mode and locating menus (See separate guide covering the interface.)

Control panel parameter access

• Accessing and changing parameters from the display panel

Quick start information -- parameter table

•An index of available adjustments and readouts, where to access them and where to find detailed information.

Knight XL operation

•A: General

•B: Temperature Setting

•C: Data Logging

•D: Functions

•E: DHW Settings

•F: Outdoor Air Reset Curve

•G: Anti-cycling

•H: Control Modes

•I: Circulation Pumps

•J: Service Notification

Service Manual

Maintenance

•Service and maintenance schedules

•Address reported problems

•Inspect boiler area and boiler interior

•Clean condensate trap

•Check all piping for leaks

•Check air openings

•Flue vent system and air piping

•Check water system

•Check expansion tank

•Check boiler relief valve

•Inspect ignition electrode

•Check ignition ground wiring

•Check all boiler wiring

•Check control settings

•Perform start-up and checks

•Check burner flame

•Check flame signal

•Check flue gas temperature

•General maintenance

•Review with owner

•Cleaning boiler heat exchanger

•Oiled bearing circulators

Troubleshooting

•Troubleshooting table - No display

•Checking temperature sensors

•Sensor tables

•Troubleshooting table - Fault messages displayed on boiler interface

•Combustion analysis procedure

•Gas valve adjustment procedure

5

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Contents Models 399 Contents Niosh stated First Aid Please read before proceedingHandling ceramic fiber materials When servicing boiler Service What is in this manual?Maintenance TroubleshootingNear boiler piping ServiceMenu / Exit UP Down Knight XL displayControl inputs Control outputs Smart Control ModuleHow the boiler operates General OperationHow the control module operates Sequence of operationBLR 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 settingsOutdoor air reset DHW settingsData logging FunctionsShift reset curve Maximum air temperatureMaximum SH set point Minimum SH set pointAnti-cycling SH controlling sensor Control modesSH source Boiler cascade addressCirculation pumps Service NotificationCascade offset 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 electrodesReview with owner Check flame signalCleaning boiler heat exchanger Before troubleshooting TroubleshootingCheck control module fuses Check the followingNo Burner No DisplayOperation Unit Does NotTemperature Resistance Checking temperature sensorsNo Pump NoisyOperation Boiler Pump System PumpFlow Switch/LWCOFlame SequenceNo Flame Ign Anti-cyclingRunning No FlameLimit w/Manual Adjustable HighFan Low Fan Speed LowFan Speed High Fan HighSensor Open Sensor ShortedTemp O/Shoot Parameters Rem Ctrl FltProgr OpenWatch Dog Error Service BlkNo Error Stored Low 24 VACGas Valve Adjustment Combustion Analysis ProcedureOr Obstruction Gas Supply PressureModels 600 Gas valve adjustment procedureModel Page Page KBX-SER Rev E
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Manual 20 pages 31.65 Kb

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.