Lochinvar 400, 801 operation manual Optional room air, Removing from existing vent

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3 General venting (continued)

The Knight XL uses model specific combustion air intake and vent piping sizes as detailed in Table 3D below.

Table 3D Air Intake/Vent Piping Sizes

Model

 

Air Intake

Vent

400 - 601

 

4 inches (102 mm)

4 inches (102 mm)

 

 

 

 

701 - 801

 

4 inches (102 mm)

6 inches (152 mm)

 

 

 

 

 

 

Increasing or decreasing combustion air

NOTICE

 

 

or vent piping is not authorized.

Minimum / Maximum allowable combustion air and vent piping lengths are as follows:

Installation & Operation Manual

Vent and air piping

Vent and air system:

Installation must comply with local NOTICE requirements and with the National Fuel Gas

Code, ANSI Z223.1 for U.S. installations or CSA B149.1 for Canadian installations.

You must also install air piping from outside to the boiler air intake adapter. The resultant installation is direct vent (sealed combustion).

You may use any of the vent/air piping methods covered in this manual. Do not attempt to install the Knight XL using any other means.

Combustion Air = 12 equivalent feet (3.7 m) minimum / 100 equivalent feet (30.5 m) maximum

Vent = 12 equivalent feet (3.7 m) minimum / 100 equivalent feet (30.5 m) maximum

￿WARNING

DO NOT mix components from different systems. The vent system could fail, causing leakage of flue products into the living space. Use only approved stainless steel, PVC or CPVC pipe and fittings. For PVC/CPVC use with primer and cement specifically designed for the material used.

When determining equivalent combustion air and vent length, add 5 feet (1.5m) for each 90° elbow and 3 feet (.9 m) for each 45° elbow.

EXAMPLE: 20 feet (6 m) of PVC pipe + (3) 90° elbows +

(3)45° elbows + (1) concentric vent kit (CVK3007) = 49 equivalent feet (15 m) of piping.

NOTICE

The appliance output rating will reduce

by up to 1.5% for each 25 feet (68 m) of

 

vent length.

Table 3E Concentric Vent Kit Equivalent Vent Lengths

Model

Kit Number

Equivalent

Vent Length

 

 

400

CVK3007

5 Feet (1.5 m)

501

CVK3007

30 Feet (9 m)

601

CVK3007

30 Feet (9 m)

Removing from existing vent

Follow the instructions in Section 1, page 12 of this manual when removing a boiler from an existing vent system.

Vent, air piping and termination:

The Knight XL vent and air piping can be installed through the roof or through a sidewall. Follow the procedures in this manual for the method chosen. Refer to the information in this manual to determine acceptable vent and air piping length.

Optional room air

Optional room air is intended for NOTICE commercial applications. Combustion air piping to the outside is recommended for

residential applications.

Commercial applications utilizing the Knight XL boiler may be installed with a single pipe carrying the flue products to the outside while using combustion air from the equipment room. In order to use the room air venting option the following conditions and considerations must be followed.

•The unit MUST be installed with the appropriate room air kit (Table 3F).

•The equipment room MUST be provided with properly sized openings to assure adequate combustion air. Please refer to instructions provided with the room air kit.

•There will be a noticeable increase in the noise level during normal operation from the inlet air opening.

•Using the room air kit makes the unit vulnerable to combustion air contamination from within the building. Please review Section 1, Prevent Combustion Air Contamination, to ensure proper installation.

•Vent system and terminations must comply with the standard venting instructions set forth in this manual.

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Contents Models 400 Contents Please read before proceeding When servicing boilerStainless steel heat exchanger Knight XL How it worksModel Models 601 Knight XL Boiler =B=R Rating RatingsCloset and alcove installations Installation must comply withDetermine boiler location Before locating the boiler, checkAlcove Installation Provide air openings to room Residential garage installationVent and air piping Flooring and foundationWhen 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 Prepare boiler Remove boiler from wood palletGas conversions Model Leveling the boiler Models 601General venting Direct venting options Vertical Vent Requirements for installation in Canada Install vent and combustion air pipingInstalling vent or air piping General ventingVent Pipe, and Fittings PVC/CPVC air intake/vent connectionsStainless 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 NumberSidewall direct venting If using the alternate sidewall terminationVent/air termination sidewall Determine location3AClearance 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 400 Multiventing sidewall terminations 11Concentric Vent Sidewall AttachmentVent/air termination vertical Vertical direct ventingMultiple vent/air terminations Prepare roof penetrations4Concentric Vertical Termination Vertical termination installationMm see -9, Multiventing vertical terminationsConcentric Venting Arrangement Alternate vertical concentric venting10Existing Vent as a Chase Existing vent as a chaseSystem water piping methods General piping information Hydronic pipingLow water cutoff device Chilled water systemHydronic piping Near boiler piping components Flow switch adjustmentNear boiler piping connections Circulator sizingVariable speed pump option Head Feet Pressure20F 25F 30F 35F Model 7Single Boiler Multiple Temperatures 8Single Boiler Primary/Secondary Piping Manifold Pipe Sizes in Inches mm Number of Units10Multiple Boilers Primary/Secondary Piping Loop Gas connections Connecting gas supply pipingPropane Gas Natural gasInches Check inlet gas supplyGas Pressure Gas valve replacementInstallation must comply with Field wiringLine voltage connections Low voltage connectionsLouver proving switch Outdoor temperature sensorHigh gas pressure switch Low gas pressure switchAlarm contacts Flow switchWiring of the cascade ModbusManual Condensate drain Condensate disposalStart-up Freeze protection when usedCheck/control water chemistry Fill and test water systemCheck thermostat circuits Check for gas leaksInspect/fill condensate system Inspect/check condensate lines and fittingsStart the boiler Final checks before starting the boilerIf boiler does not start correctly Check system and boilerFor Your Safety Read Before Operating Natural Gas Propane Set space heating operationVerify DHW mode Set domestic hot water DHW operationConfiguration of the cascade General Operating informationProtection features Boiler temperature regulation Cascade Outdoor reset operation, if usedOperation Display Sequence of operationStandby, ready to start a new cycle Navigation Dial Knight XL control moduleAccess modes InstallerUser Call for Heat Information Dial Function Maintenance Maintenance and annual startup Service technicianInstructions Address reported problems MaintenanceClean condensate trap Check all piping for leaks Inspect boiler areaCheck water system Flue vent system and air pipingCheck expansion tank Check boiler relief valveCheck all boiler wiring Check ignition ground wiringCheck control settings Inspect ignition and flame sense electrodesCleaning boiler heat exchanger Check flame signalReview with owner Model Kit Part Component Number DescriptionLOW Voltage 120 VAC High Voltage Diagrams2Ladder Diagram Page KBXII-I-O Rev D
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400, 801 specifications

The Lochinvar 801,400 is a cutting-edge solution in the realm of high-efficiency commercial water heating. This model represents a significant advancement in the design and functionality of water heaters, catering primarily to the demands of large-scale facilities like hotels, hospitals, and large industrial operations.

One of the standout features of the Lochinvar 801,400 is its impressive heating capacity, which can produce up to 801,400 BTUs, making it suitable for high-demand applications. This output is crucial for establishments that require a consistent supply of hot water, such as commercial kitchens and laundry facilities. The robust design ensures that it can handle peak demand periods without compromising performance.

Another significant aspect is the innovative use of advanced technology in its operation. The Lochinvar 801,400 integrates smart controls that enhance its efficiency and ease of operation. These controls allow for precise monitoring and adjustment of water temperatures, ensuring that the system operates within optimal parameters while maximizing energy savings. The intelligent monitoring system can provide real-time updates, making it easier for facility managers to keep track of performance and address maintenance needs proactively.

The construction of the Lochinvar 801,400 incorporates durable materials that not only enhance the longevity of the unit but also offer resistance to corrosion and wear. This durability translates into lower maintenance costs and an extended lifespan for the unit, making it a worthwhile investment for businesses.

Moreover, the Lochinvar 801,400 is designed with energy efficiency in mind. It boasts a high thermal efficiency rating, which reduces operational costs and minimizes the carbon footprint of heating operations. This efficiency is critical in today’s environmentally conscious market, where businesses are seeking to reduce their energy consumption and comply with strict regulations.

The design of the Lochinvar 801,400 also prioritizes safety, featuring innovative safety controls and fail-safes that protect both the unit and the users.

In summary, the Lochinvar 801,400 offers a combination of high capacity, advanced technology, durability, and energy efficiency, making it an excellent choice for commercial water heating solutions. As industries continue to evolve, the demand for reliable and efficient water heating solutions like the Lochinvar 801,400 will only increase.
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