Lochinvar 81-286 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 boiler 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 PC 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 boiler operation

General

Temperature Setting

Data Logging

Functions

DHW Settings

Outdoor Reset

Anti-cycling

Control Modes

Circulation Pumps

Building Management System (BMS)

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 81 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 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 accessMenu Description See User Access Installer Access Display ModifyParameter table 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 VersionFunctions Temperature SettingsData Logging DHW Settings Outdoor Reset Anti-Cycling Control modes Ramp SettingsControlling Sensor BMS Thermostat InputMinimum On/Off Time Cascade OffsetCirculation pumps Service Notification Instructions 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 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 DoesResistance Temperature Checking temperature sensorsTemperature Resistance Temperature Resistance 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 DiffOutlet Temp Flue Temp HighDelta T High Parameters Progr Service BlkRem Ctrl Flt Combustion Analysis Procedure Gas Valve Adjustment Gas valve adjustment procedureOr Obstruction Gas Supply Pressure
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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.