Lochinvar 399 Maintenance Maintenance and annual startup, Service technician, Owner maintenance

Page 67

Installation & Operation Manual

12 Maintenance

Maintenance and annual startup

Table 12A 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

UP

and sealed tight

 

 

 

 

• Check

system water

pressure/system

 

START-

piping/expansion tank

 

 

 

• Check control settings

 

 

 

• Check

ignition

and

flame

sense

ANNUAL

electrodes (sand off any deposits; clean

• Perform start-up

checkout

and

 

and reposition)

 

 

 

 

 

• Check wiring and connections

 

 

 

performance verification per Section 10.

 

• 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 air vents

 

 

 

Periodically

•Test low water cutoff (if used)

 

 

 

• Reset button (low water cutoff)

 

 

 

 

• Check boiler piping (gas

and

Every

water) for leaks

 

6 months

 

 

 

• Operate relief valve

 

 

 

 

End

•Shut boiler down (unless

boiler

of season

used for domestic hot water)

 

months

 

 

 

67

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Image 67
Page 66 Page 68
Contents Save this manual for future reference Models 399Contents Please read before proceeding When servicing boilerKnight XL How it works Model Air pressure switch Pump relay boardModels 600 Knight XL Boiler =B=R Rating RatingsBefore locating the boiler, check Installation must comply withCloset and alcove installations Determine boiler locationTOP For closet installations, Cpvc orFlooring and foundation Residential garage installationProvide air openings to room Vent and air pipingProducts to avoid When using an existing vent system to install a new boilerAreas likely to have contaminants When removing a boiler from existing common vent system Gas conversions Prepare boilerRemove boiler from wood pallet ModelModels 600 Leveling the boilerGeneral venting Direct venting options Vertical Vent General venting Install vent and combustion air pipingRequirements for installation in Canada Installing vent or air pipingApproved Stainless Steel Vent Manufacturers PVC/CPVC air intake/vent connectionsMake Stainless steel vent Air inlet pipe materialsStainless steel air intake/vent connections FasNSeal Saf-T VentRemoving from existing vent Optional room airAir contamination Model Description Kit NumberDetermine location If using the alternate sidewall terminationSidewall direct venting Vent/air termination sidewall3AClearance to Gravity Air Inlets Bird Screen Typical Prepare wall penetrationsMultiple vent/air terminations Prepare wall penetrations Alternate Field Supplied OptionTermination and fittings Description and usage Sidewall termination installation9Concentric Vent Dimensional Drawing Models 399 Multiventing sidewall terminations 11Concentric Vent Sidewall AttachmentVent/air termination vertical Vertical direct venting2Vertical Terminations with Multiple Boilers Prepare roof penetrations4Concentric Vertical Termination Vertical termination installationMm see -9, Multiventing vertical terminationsHydronic piping Hydronic piping Near boiler piping connections Flow switch adjustmentCirculator sizing 399 500 600 700 800 Head FeetPressure 20F 25F 30F 35FNear boiler piping components 7Single Boiler Primary/Secondary Piping Number of Units Model Manifold Pipe Sizes in Inches mm Gas connections Connecting gas supply pipingPropane Gas Natural gasLength of Pipe in Straight Feet Nominal Natural Gas Pipe Capacity ChartCheck inlet gas supply Iron PipeGas Pressure Gas valve replacementInstallation must comply with Field wiringLine voltage connections Low gas pressure switch Outdoor temperature sensorAuxiliary device proving switch High gas pressure switchBoiler management system Alarm contactsWiring of the cascade System supply sensor3Low Voltage Field Wiring Connections Condensate drain Condensate disposalFill and test water system Freeze protection when usedStart-up Check/control water chemistryInspect/check condensate lines and fittings Check for gas leaksCheck thermostat circuits Inspect/fill condensate systemCheck system and boiler Final checks before starting the boilerStart the boiler If boiler does not start correctlyFor Your Safety Read Before Operating Natural Gas Propane Set space heating operationSet domestic hot water DHW operation Configuration of the cascadeGeneral Operating informationProtection features Outdoor reset operation, if used Boiler temperature regulationCascade Sequence of the cascade DHW, Night Setback, and Ramp Delay operation with CascadeBLR Ignition Sequence of operationShutdown Knight XL control moduleTo save parameters and exit programming Access modesInstaller UserPrepurge ServiceStandby Set Point MetControl will display the actual fan motor RPM SYS ***.*F10V in **.Vdc DelayOperation of the cascade Service technician Maintenance Maintenance and annual startupOwner maintenance Inspect boiler area MaintenanceAddress reported problems Clean condensate trap Check all piping for leaksCheck 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 settingsModel Kit Part Component Number Description Check flame signalCleaning boiler heat exchanger Review with ownerHigh Voltage Diagrams2Ladder Diagram Page Page KBX-I-O Rev H
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399 specifications

Lochinvar 999 - 750, CF-CH(E)-i&s-08,399 is a cutting-edge boiler designed for commercial heating applications. With its robust construction and high efficiency, this model stands out in the crowded market of heating solutions.

One of the main features of the Lochinvar 999 - 750 is its exceptional thermal efficiency rating. The unit incorporates advanced condensing technology that allows it to recover heat from flue gases, which helps in achieving efficiency levels of up to 99%. This efficiency not only reduces energy consumption but also lowers operational costs, making it an excellent investment for businesses looking to minimize their carbon footprint.

The boiler is designed to provide a powerful output of 750 kW, ensuring it meets the heating demands of larger buildings or commercial spaces. Its capacity makes it suitable for a range of applications including schools, hospitals, and industrial facilities. Moreover, the unit features a built-in cascading system that enables multiple boilers to be connected, enhancing system reliability and flexibility.

In terms of technology, the Lochinvar 999 - 750 is equipped with a user-friendly touchscreen interface. This innovative control system allows operators to monitor and adjust settings with ease, providing real-time performance data and alerts for maintenance needs. The intelligent controls optimize operation to match the heating load, further enhancing energy efficiency.

Safety is a top priority with this model. It is built with multiple safety features such as automatic shut-off valves, pressure relief valves, and flame monitoring systems, ensuring safe operation under various conditions. The unit also adheres to stringent industry standards and regulations, making it a reliable choice for commercial applications.

Furthermore, the Lochinvar 999 - 750 is designed with serviceability in mind. Its compact footprint and accessible components simplify maintenance, reducing downtime and associated costs. The unit also supports a variety of fuel sources, including natural gas, propane, and biodiesel, providing flexibility to meet different facility requirements.

In summary, the Lochinvar 999 - 750, CF-CH(E)-i&s-08,399 represents a blend of efficiency, reliability, and safety in commercial heating. Its advanced technologies and thoughtful design make it a powerful solution for various heating needs, making it an ideal choice for businesses aiming for excellence in energy management and operational efficiency.
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