Lochinvar 81-286 service manual Models 81

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KBII-SER Rev C

Service Manual

Models: 81 - 286

￿WARNING

This manual must only be used by a qualified heating installer / service technician. Read all instructions, including this manual and the Knight Boiler Installation and Operation Manual, before installing. Perform steps in the order given. Failure to comply could result in severe personal injury, death, or substantial property damage.

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Contents Models 81 Contents Handling ceramic fiber materials Please read before proceedingNiosh stated First Aid When servicing boiler Service What is in this manual?Maintenance TroubleshootingNear boiler piping ServiceNavigation Dial Knight boiler displayLOW Voltage Connection Board Control inputsControl outputs Smart Control ModuleGeneral Operation Access modesHow the boiler operates How the control module operatesOperation Display From previous page Sequence of Operation Button Screen Operation Display Status Display panel menu accessButton Screen Status Operation Display Display panel parameter accessParameter table Description See User Access Installer Access Display ModifyMenu DHW Settings Resetoutdoor Description See User Access Installer Access Display ModifyBMS Service Notification Viewable and changeable control parameters Temperature units C / FTime and Date Software VersionData Logging Temperature SettingsFunctions DHW Settings Outdoor Reset Anti-Cycling Control modes Ramp SettingsControlling Sensor BMS Thermostat InputMinimum On/Off Time Cascade OffsetCirculation pumps Service Notification Service technician Maintenance Maintenance and annual startupInstructions 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 Check flame signalReview with owner Cleaning boiler heat exchangerOiled bearing circulators Kit Part Component Number DescriptionBefore troubleshooting TroubleshootingCheck control module fuses Check the followingNo Burner No DisplayOperation Unit DoesTemperature Resistance Temperature Resistance Checking temperature sensorsResistance Temperature No Pump NoisyBoiler Pump System Pump DHW PumpTroubleshooting Open Temp SwApplies to the 286 Model Only Anti-cyclingFlame Sequence Cont’dOutlet Mrhl Outlet ArhlFan Speed Low Fan Low/HighHigh GV/RelaySensor Shorted FaultLouver Proving Inlet SensorFatal Error Flue Sensor FaultMemory Error Flue Temp DiffDelta T High Flue Temp HighOutlet Temp Rem Ctrl Flt Service BlkParameters Progr Combustion Analysis Procedure Gas Valve Adjustment Gas valve adjustment procedureOr Obstruction Gas Supply Pressure
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Manual 16 pages 58.01 Kb

81-286 specifications

Lochinvar 81-286 is a highly efficient and innovative heating solution that represents the latest advancements in boiler technology. This model, part of Lochinvar's prestigious line-up, is designed for commercial applications, delivering superior performance while emphasizing energy efficiency and user-friendly operation.

One of the standout features of the Lochinvar 81-286 is its robust construction. Built with high-quality materials, the unit is engineered for durability and reliability, ensuring long-term operation with minimal maintenance. Its compact design allows for versatility in installation, making it suitable for various building layouts and configurations.

The boiler's primary technology is its advanced condensing capability, which optimizes heat transfer and reduces energy consumption. By efficiently using the heat generated during combustion, the 81-286 can achieve higher thermal efficiencies, often surpassing traditional systems. This results in lower operating costs and reduced greenhouse gas emissions, aligning with the growing demand for sustainable energy solutions in commercial buildings.

Lochinvar incorporates intelligent control systems into the 81-286, featuring user-friendly interfaces that facilitate straightforward programming and monitoring. These control systems enable precise regulation of temperature and pressure, ensuring optimal operation while providing real-time feedback that aids in troubleshooting and maintenance. Users can enjoy the convenience of remote monitoring, enhancing the overall user experience.

Another key characteristic of the Lochinvar 81-286 is its capacity range. The model is available in various sizes, allowing it to meet the specific demands of different facilities, from small businesses to large industrial applications. This flexibility makes it a top choice for contractors and engineers seeking reliable heating solutions that cater to diverse needs.

In addition, the Lochinvar 81-286 boasts exceptional safety features, including built-in safeguards that protect against overheating and pressure surges. These aspects ensure that the unit operates within safe parameters, providing peace of mind for facility managers and operators.

In summary, the Lochinvar 81-286 combines durability, efficiency, and advanced technology, making it an ideal solution for commercial heating needs. With its innovative condensing design, intelligent controls, and safety features, this boiler stands out as a reliable choice for those seeking sustainable and effective heating solutions. Its versatility and performance make it a key player in today’s ever-evolving energy landscape.