Lochinvar 800 operation manual Ratings, Knight XL Boiler =B=R Rating

Page 7

Ratings

Knight XL Boiler

I=B=R Rating

 

 

Input

 

Net

Model Number

 

Gross

I=B=R

 

MBH

 

Ratings

 

 

Output

Note: Change “N” to

 

(Note 4)

MBH

Water,

 

 

MBH

“L” for L.P. gas models.

 

 

 

 

 

 

 

 

Min

 

Max

(Note 1)

(Note 2)

 

 

 

 

 

 

KBN399

80

 

399

373

324

 

 

 

 

 

 

KBN500

100

 

500

467

406

 

 

 

 

 

 

KBN600

120

 

600

567

493

 

 

 

 

 

 

KBN700

140

 

700

660

574

 

 

 

 

 

 

KBN800

160

 

800

752

654

 

 

 

 

 

 

Installation & Operation Manual

Other Specifications

Boiler

 

 

Air

Vent

Water

Water

Gas

 

 

Content

Connections

Connections

Size

Size

Gallons

 

 

 

 

 

 

 

 

(Note 3)

 

 

 

 

 

3.4

1-1/2"

1"

4"

4"

 

 

 

 

 

4.2

1-1/2"

1"

4"

4"

 

 

 

 

 

4.2

2"

1"

4"

4"

 

 

 

 

 

5.0

2"

1"

4"

6"

 

 

 

 

 

5.7

2"

1"

4"

6"

 

 

 

 

 

NOTICE Maximum allowed working pressure is located on the rating plate.

Notes:

1.The ratings are based on standard test procedures prescribed by the United States Department of Energy.

2.Net I=B=R ratings are based on net installed radiation of sufficient quantity for the requirements of the building and

nothing need be added for normal piping and pickup. Ratings are based on a piping and pickup allowance of 1.15.

3. Knight XL boilers require special gas venting. Use only the vent materials and methods specified in the Knight XL Installation and Operation Manual.

4.Standard Knight XL boilers are equipped to operate from sea level to 4,500 feet only with no adjustments. The boiler will de-rate by 4% for each 1,000 feet above sea level up to 4,500 feet.

5.High altitude Knight XL boilers are equipped to operate from 3,000 to 12,000 feet only with no field adjustments. The boiler will de-rate by 2% for each 1,000 feet above 3,000 feet. High altitude models are manufactured with a

different control module for altitude operation, but the Figure A High Altitude Label Location operation given in this manual remains the same as the

standard boilers. A high altitude label (as shown in FIG. A) is also affixed to the unit.

6.Ratings have been confirmed by the Hydronics Institute, Section of AHRI.

UNIT EQUIPPED FOR

HIGH ALTITUDE

3,000 FT. TO 12,000 FT.

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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 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 settingsCleaning boiler heat exchanger Check flame signalReview with owner High Voltage Diagrams2Ladder Diagram Page
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