Lochinvar 399 - 800 service manual Maintenance Maintenance and annual startup, Service technician

Page 23

Service Manual

2Maintenance

Maintenance and annual startup

Table 2A Service and Maintenance Schedules

Service technician

(see the following pages for instructions)

General:

Address reported problems

Inspect interior; clean and vacuum if necessary;

Clean condensate trap and fill with fresh water

•Check for leaks (water, gas, flue, condensate)

Verify flue and air lines in good condition and sealed tight

UP

•Check

system water pressure/system

 

START-

piping/expansion tank

 

• Check control settings

 

• Check ignition and flame sense

 

ANNUAL

electrodes (sand off any deposits; clean

and reposition)

 

 

 

 

 

 

• Check wiring and connections

 

 

• Perform start-up

checkout

and

 

performance verification per Section 10

 

in the Knight XL Installation and

 

Operation Manual.

 

 

 

• Flame inspection (stable, uniform)

 

• Flame signal (at least 10 microamps at

 

high fire)

 

 

 

• Clean

the heat

exchanger

if flue

 

temperature is more than 54°F (30°C)

 

above return water temperature.

 

If combustion or performance indicate need:

Clean heat exchanger

Remove and clean burner using compressed air only

Clean the blower wheel

Owner maintenance

(see the Knight XL User’s Information Manual for

instructions)

 

• Check boiler area

Daily

• Check pressure/temperature

 

gauge

 

 

 

• Check vent piping

 

• Check air piping

Monthly

• Check air and vent termination

 

 

screens

 

• Check relief valve

 

• Check condensate drain system

 

• Check automatic air vents

 

 

Periodically

•Test low water cutoff (if used)

 

 

• Reset button (low water cutoff)

 

 

Every

• Check boiler piping (gas and

water) for leaks

6 months

 

 

• Operate relief valve

 

 

End

•Shut boiler down (unless boiler

of season

used for domestic hot water)

 

months

 

 

 

23

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Contents Models 399 Contents Niosh stated First Aid Please read before proceedingHandling ceramic fiber materials 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 sourceCirculation pumps Service NotificationCascade offset Owner maintenance Maintenance Maintenance and annual startupService technician 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 settingsReview with owner Check flame signalCleaning boiler heat exchanger 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 ObstructionModels 600 Gas valve adjustment procedureModel 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.