Lochinvar 399 Standby, Set Point Met, Prepurge, Ignition, SH***% Rate, Postpurge, Service, Open

Page 63

Installation & Operation Manual

11 Operating information (continued)

Status Display Screens

By using the Previous/Next (￿, ￿) arrow keys on the SMART SYSTEM display panel, you can navigate through the eight (8) display screens. Each screen will contain two (2) viewable items. The following is a description of the individual items and what they can display:

Screen

 

Display shows:

Description

 

 

BLR: OFF

The unit has been turned OFF by the Enter/Reset button on the

 

 

SMART SYSTEM display panel.

 

 

 

 

 

 

 

 

 

Standby

The unit has not received a call for heat from a remote thermostat nor

 

 

has it received a call for heat from a DHW thermostat.

 

 

 

 

 

 

 

 

 

Set Point Met

The unit has met the water temperature set point, but is still receiving

 

 

a call for heat from either a remote thermostat or a DHW thermostat.

 

 

 

 

 

 

 

 

 

 

The unit has initiated a 10 second purge period on a call for heat.

 

 

Prepurge

Note: On the 800 model the unit will initiate a 20 second purge

 

 

 

period on a call for heat.

 

 

 

 

 

 

Ignition

The unit has begun a 5 second spark period to ignite the main burner.

 

 

 

 

#1

 

SH***% Rate

The unit has fired and is running at the displayed percentage.

 

 

 

 

 

The call for heat has been satisfied and the unit runs the fan for an

 

 

 

 

 

Postpurge

additional 10 seconds to clear the combustion chamber and vent

 

 

 

system of residual flue products.

 

 

 

 

 

 

Service

The unit has been placed in a temporary mode that will allow the unit

 

 

to fire at 100% of rate for the purpose of combustion analysis.

 

 

 

 

 

 

 

 

 

 

When the outlet sensor has been selected as the control sensor

 

 

OUT: ***.*F(***)

(default), the control will display the outlet temperature as well as the

 

 

 

set point in parenthesis.

 

 

 

 

 

 

***.*F

If the outlet sensor has not been selected as the control sensor, only

 

 

the outlet temperature will be displayed.

 

 

 

 

 

 

 

 

 

Open

The control does not detect the outlet sensor.

 

 

 

 

 

 

Shorted

The outlet sensor wires or the sensor itself has become shorted.

 

 

 

 

 

Press

the Next ￿ arrow key on the

SMART SYSTEM display to access Screen #2.

 

 

IN: ***.*F

If the inlet sensor has not been selected as the control sensor, only the

 

 

inlet temperature will be displayed.

 

 

 

 

 

 

 

 

 

 

When the inlet sensor has been selected as the control sensor, the

 

 

***.*F (***)

control will display the inlet temperature as well as the set point in

#2

 

 

parenthesis.

 

 

 

 

 

Open

The control does not detect the inlet sensor.

 

 

 

 

 

 

Shorted

The inlet sensor wires or the sensor itself has become shorted.

 

 

 

 

 

 

RISE: ***.*F

The difference between the inlet temperature and the outlet

 

 

temperature.

 

 

 

 

 

 

 

 

Press

the Next ￿ arrow key on the

SMART SYSTEM display to access Screen #3.

 

 

 

 

63

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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 pipingWhen using an existing vent system to install a new boiler Products to avoidAreas 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 pipingPVC/CPVC air intake/vent connections Approved Stainless Steel Vent ManufacturersMake 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 penetrationsPrepare wall penetrations Alternate Field Supplied Option Multiple vent/air terminationsTermination 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 Flow switch adjustment Near boiler piping connectionsCirculator 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 replacementField wiring Installation must comply withLine 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 Boiler temperature regulation Outdoor reset operation, if usedCascade 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 Maintenance Maintenance and annual startup Service technicianOwner 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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