Lochinvar 800 operation manual Contents

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Contents

HAZARD DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 2 PLEASE READ BEFORE PROCEEDING . . . . . . . . . . . . 3 THE KNIGHT XL -- HOW IT WORKS . . . . . . . . . . . . . . . 4-6 RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1. DETERMINE BOILER LOCATION

Provide Air Openings to Room . . . . . . . . . . . . . . . . . . . . 10 Flooring and Foundation . . . . . . . . . . . . . . . . . . . . . . . . 10 Residential Garage Installation . . . . . . . . . . . . . . . . . . . . 10 Vent and Air Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Prevent Combustion Air Contamination . . . . . . . . . . . . . . 10 Corrosive Contaminants and Sources . . . . . . . . . . . . . . . 11 Using an Existing Vent System to Install a New Boiler . . 11 Removing a Boiler from Existing Common Vent . . . . . . . 12

2. PREPARE BOILER

Remove Boiler from Wood Pallet . . . . . . . . . . . . . . . . . . 13 Gas Conversions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Model 399 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Model 500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Models 600 - 800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Leveling the Boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3. GENERAL VENTING

Direct Venting Options . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-16 Install Vent and Combustion Air Piping . . . . . . . . . . . . . . 17

PVC/CPVC Vent Piping Materials . . . . . . . . . . . . . . . 17 Requirements for Installation in Canada . . . . . . . . . . . . . 17 Installing Vent or Air Piping . . . . . . . . . . . . . . . . . . . . . . . 17-18 PVC/CPVC Air Intake/Vent Connections . . . . . . . . . . . . . 18 Air Inlet Pipe Materials . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Stainless Steel Air Intake/Vent Connections . . . . . . . . . . 20 Min./Max. Combustion Air & Vent Piping Lengths . . . . . . 21 Vent and Air Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Optional Room Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-22

4. SIDEWALL DIRECT VENTING

Vent/Air Termination - Sidewall . . . . . . . . . . . . . . . . . . . . 23-26

Determine Location . . . . . . . . . . . . . . . . . . . . . . . . . . 23-25

Prepare Wall Penetrations . . . . . . . . . . . . . . . . . . . . . 25-26

Termination and Fittings . . . . . . . . . . . . . . . . . . . . . . . 26

Multiple Vent/Air Terminations . . . . . . . . . . . . . . . . . . 26

Sidewall Termination - Optional Concentric Vent . . . . . . 27-29

5. VERTICAL DIRECT VENTING

Vent/Air Termination - Vertical . . . . . . . . . . . . . . . . . . . . . 30-31

Determine Location . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Prepare Roof Penetrations . . . . . . . . . . . . . . . . . . . . . 31

Termination and Fittings . . . . . . . . . . . . . . . . . . . . . . . 31

Multiple Vent/Air Terminations . . . . . . . . . . . . . . . . . . 31 Vertical Termination - Optional Concentric Vent . . . . 32-33

6. HYDRONIC PIPING

System Water Piping Methods . . . . . . . . . . . . . . . . . . . . 34

Low Water Cutoff Device . . . . . . . . . . . . . . . . . . . . . . . . . 34

Chilled Water System . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Freeze Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

General Piping Information . . . . . . . . . . . . . . . . . . . . . . . 34

Flow Switch and Relief Valve Installation . . . . . . . . . . . . 35

Flow Switch Adjustment . . . . . . . . . . . . . . . . . . . . . . . 36

Circulator Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Near Boiler Piping Connections . . . . . . . . . . . . . . . . . . . 36

Near Boiler Piping Components . . . . . . . . . . . . . . . . . . . 38

7. GAS CONNECTIONS

Connecting Gas Supply Piping . . . . . . . . . . . . . . . . . . . . 41

Natural Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Pipe Sizing for Natural Gas . . . . . . . . . . . . . . . . . . . . 42

Natural Gas Supply Pressure Requirements . . . . . . . 42

Propane Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Pipe Sizing for Propane Gas . . . . . . . . . . . . . . . . . . . 42

Propane Supply Pressure Requirements . . . . . . . . . . 42

Check Inlet Gas Supply . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Gas Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Gas Valve Replacement . . . . . . . . . . . . . . . . . . . . . . . . . 44

8. FIELD WIRING

Line Voltage Connections . . . . . . . . . . . . . . . . . . . . . . . . 45

Low Voltage Connections . . . . . . . . . . . . . . . . . . . . . . . . 46

Wiring of the Cascade . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

9. CONDENSATE DISPOSAL

 

Condensate Drain

49

10. STARTUP

50-55

11. OPERATING INFORMATION

 

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Cascade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58-59

Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Knight XL Control Module . . . . . . . . . . . . . . . . . . . . . . . . 61-62

Status Display Screens . . . . . . . . . . . . . . . . . . . . . . . . . . 63-66

12. MAINTENANCE

 

Maintenance and Annual Startup

67-71

13. DIAGRAMS

 

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Ladder Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Revision Notes . . . . . . . . . . . . . . . . . . . . . . . . . Back Cover

Hazard definitions

The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product.

￿DANGER

￿WARNING

￿CAUTION CAUTION NOTICE

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage.

NOTICE indicates special instructions on installation, operation, or maintenance that are important but not related to personal injury or property damage.

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Contents Models 399 Save this manual for future referenceContents When servicing boiler Please read before proceedingKnight XL How it works Air pressure switch Pump relay board ModelModels 600 Ratings Knight XL Boiler =B=R RatingDetermine boiler location Installation must comply withCloset and alcove installations Before locating the boiler, checkFor closet installations, Cpvc or TOPVent and air piping Residential garage installationProvide air openings to room Flooring and foundationAreas likely to have contaminants When using an existing vent system to install a new boilerProducts to avoid When removing a boiler from existing common vent system Model Prepare boilerRemove boiler from wood pallet Gas conversionsLeveling the boiler Models 600General venting Direct venting options Vertical Vent Installing vent or air piping Install vent and combustion air pipingRequirements for installation in Canada General ventingMake PVC/CPVC air intake/vent connectionsApproved Stainless Steel Vent Manufacturers Air inlet pipe materials Stainless steel ventFasNSeal Saf-T Vent Stainless steel air intake/vent connectionsOptional room air Removing from existing ventModel Description Kit Number Air contaminationVent/air termination sidewall If using the alternate sidewall terminationSidewall direct venting Determine location3AClearance to Gravity Air Inlets Prepare wall penetrations Bird Screen TypicalTermination and fittings Prepare wall penetrations Alternate Field Supplied OptionMultiple vent/air terminations Sidewall termination installation Description and usage9Concentric Vent Dimensional Drawing Models 399 11Concentric Vent Sidewall Attachment Multiventing sidewall terminationsVertical direct venting Vent/air termination verticalPrepare roof penetrations 2Vertical Terminations with Multiple BoilersVertical termination installation 4Concentric Vertical TerminationMultiventing vertical terminations Mm see -9,Hydronic piping Hydronic piping Circulator sizing Flow switch adjustmentNear boiler piping connections 20F 25F 30F 35F Head FeetPressure 399 500 600 700 800Near boiler piping components 7Single Boiler Primary/Secondary Piping Number of Units Model Manifold Pipe Sizes in Inches mm Connecting gas supply piping Gas connectionsNatural gas Propane GasIron Pipe Nominal Natural Gas Pipe Capacity ChartCheck inlet gas supply Length of Pipe in Straight FeetGas valve replacement Gas PressureLine voltage connections Field wiringInstallation must comply with High gas pressure switch Outdoor temperature sensorAuxiliary device proving switch Low gas pressure switchSystem supply sensor Alarm contactsWiring of the cascade Boiler management system3Low Voltage Field Wiring Connections Condensate disposal Condensate drainCheck/control water chemistry Freeze protection when usedStart-up Fill and test water systemInspect/fill condensate system Check for gas leaksCheck thermostat circuits Inspect/check condensate lines and fittingsIf boiler does not start correctly Final checks before starting the boilerStart the boiler Check system and boilerFor Your Safety Read Before Operating Set space heating operation Natural Gas PropaneConfiguration of the cascade Set domestic hot water DHW operationOperating information GeneralProtection features Cascade Boiler temperature regulationOutdoor reset operation, if used DHW, Night Setback, and Ramp Delay operation with Cascade Sequence of the cascadeSequence of operation BLR IgnitionKnight XL control module ShutdownUser Access modesInstaller To save parameters and exit programmingSet Point Met ServiceStandby PrepurgeSYS ***.*F Control will display the actual fan motor RPMDelay 10V in **.VdcOperation of the cascade Owner maintenance Maintenance Maintenance and annual startupService technician Clean condensate trap Check all piping for leaks MaintenanceAddress reported problems Inspect boiler areaCheck expansion tank Flue vent system and air pipingCheck water system Check boiler relief valveCheck control settings Check ignition ground wiringCheck all boiler wiring Inspect ignition and flame sense electrodesReview with owner Check flame signalCleaning boiler heat exchanger Diagrams High Voltage2Ladder Diagram Page

800 specifications

Lochinvar 800 is a groundbreaking boiler system designed to meet the heating needs of modern residential and commercial buildings. Renowned for its reliability and advanced technology, the Lochinvar 800 promises efficiency and performance that set it apart from conventional heating systems.

One of the standout features of the Lochinvar 800 is its high-efficiency heat exchanger, which enables significantly lower energy consumption compared to traditional units. This efficiency translates to substantial energy savings, making it not only an environmentally friendly choice but also a cost-effective one. The system boasts an impressive thermal efficiency rating, often exceeding 95%, which ensures that a large portion of the energy consumed is converted into usable heat.

Incorporating cutting-edge control technologies, the Lochinvar 800 utilizes smart controls that enable precise temperature regulation. These controls provide users with the ability to program and adjust settings according to specific heating needs, enhancing comfort while minimizing energy waste. The integration of modulating gas burners further optimizes energy usage, continuously adjusting the output based on the current demand, thereby preventing energy loss.

Another key characteristic of the Lochinvar 800 is its compact and sleek design, allowing for easy installation in various spaces, from utility rooms to commercial settings. The boiler's lightweight construction means that it can be mounted in tight areas, providing flexibility that adapts to the needs of the installation site.

Safety features are a top priority for the Lochinvar 800, equipped with advanced diagnostics and monitoring systems that ensure trouble-free operation. These systems continually assess performance and identify potential issues before they can evolve into serious problems, promoting longevity and reliability.

The Lochinvar 800 is also compatible with various heating distribution systems, including radiant floor heating and traditional radiators, making it a versatile choice for a wide range of applications. Coupled with its low emissions profile, the Lochinvar 800 stands out as a sustainable option in today’s market.

In summary, the Lochinvar 800 represents a new era in boiler design, merging efficiency, innovative technology, and adaptability to meet the challenges of contemporary heating needs. Its advanced features ensure optimal performance while maintaining a commitment to environmental responsibility, making it an ideal solution for energy-conscious consumers.
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