Lochinvar 81 - 286 operation manual 10Multiple Boilers Non-Zoned Primary/Secondary Piping

Page 45

Installation & Operation Manual

6 Hydronic piping (continued)

Figure 6-10Multiple Boilers - Non-Zoned Primary/Secondary Piping

 

 

 

Number of Units

 

 

Model

2

3

4

5

6

 

7

8

 

 

 

Required Pipe Sizes

 

 

81

1-1/4"

1-1/2"

2"

2"

2-1/2"

 

2-1/2"

2-1/2"

106

1-1/2"

2"

2"

2-1/2"

2-1/2"

 

2-1/2"

3"

151

2"

2"

2-1/2"

2-1/2"

3"

 

3"

3-1/2"

211

2"

2-1/2"

3"

3"

3-1/2"

 

4"

4"

286

2-1/2"

2-1/2"

3"

3-1/2"

3-1/2"

 

4"

5"

PRESSURE

 

 

REDUCING VALVE

PRESSURE

 

 

 

BACKFLOW

GAUGE

 

 

 

PREVENTER

 

 

MAKE UP WATER

SYSTEM SUPPLY

 

 

SENSOR

 

SYSTEM

AIR SEPARATOR

MAY SUBSTITUTE LOW LOSS HEADER

CIRCULATOR

 

TO

 

FROM

SYSTEM

 

 

SYSTEM

 

 

NOT TO EXCEED 4 PIPE DIA OR MAX. OF 12" APART

BALL VALVE

 

 

(TYPICAL)

EXPANSION

 

 

 

 

TANK

DRAIN POINT

 

 

 

 

(TYPICAL)

Y-STRAINER

(RECOMMENDED)

(TYPICAL)

 

 

ANTI-SCALD

 

HOT

 

 

 

WATER

 

MIXING VALVE

 

OUT

FLOW CHECK

 

 

DOMESTIC

 

 

 

 

 

 

 

 

 

VALVE

HOT WATER

 

 

 

 

 

COLD WATER

 

 

 

CIRCULATOR

 

 

 

 

 

 

 

IN

 

BOILER

CIRCULATOR

TEMPERATURE /

UNION

DRAIN

PRESSURE

(TYPICAL)

 

GAUGE

 

 

 

BOILER 4

BOILER 3

BOILER 2

BOILER 1

INDIRECT

(MEMBER 3)

(MEMBER 2)

(MEMBER 1)

(LEADER)

DHW TANK

 

 

 

 

NOTICE

Please note that these illustrations are meant to show system piping concept only, the installer is responsible for all equipment and detailing required by local codes.

45

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Contents Models 81 Contents Please read before proceeding When servicing boilerStainless steel heat exchanger Knight Boiler How it worksModels 81 Model Knight Boiler =B=R Rating RatingsCloset and alcove installations Installation must comply withDetermine boiler location Before locating the boiler, check1Closet Installation Minimum Required Clearances 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 Remove boiler from wood pallet Prepare boilerGas conversions Leveling the boilerDirect venting options Sidewall Vent General ventingDirect venting options Vertical Vent, Sidewall Air Direct venting options Vertical VentRequirements for installation in Canada Install vent and combustion air pipingInstalling vent and air piping PVC/CPVC vent piping materialsVent Pipe, and Fittings PVC/CPVC air intake/vent connectionsStainless steel vent Air inlet pipe materialsBoiler Flue BoilerBoiler Flue Intake Air Adapter Termination Optional room air LengthRemoving from existing vent Sidewall direct venting If using the alternate sidewall terminationVent/air termination sidewall Determine location2AClearance to Gravity Air Inlets Prepare wall penetrations Prepare wall penetrations Alternate Field Supplied OptionMultiple vent/air terminations Termination and fittingsSidewall termination installation Sidewall termination optional concentric ventDescription and usage 10 Concentric Multiventing sidewall terminations 12Concentric Vent Sidewall AttachmentVent/air termination vertical Vertical direct venting2Vertical Terminations with Multiple Boilers Prepare roof penetrations Multiple vent/air terminationsVertical termination optional concentric vent Vertical termination installationMultiventing vertical terminations 6Concentric Vent Roof InstallationConcentric Venting Arrangement Alternate vertical concentric venting10Existing Vent as a Chase Existing vent as a chaseHydronic piping Near boiler piping components Circulator sizing Near boiler piping connectionsIndirect water heaters StrainerPressure FeetModel Minimum Pipe Pump Size GrundfosVariable speed pump setup Variable speed pump optionUP26-96 FC/VS IFC VS Stratos 1.25 3 x 4Single Boiler Single Temperature Zoned with Circulators Number of Units 6Single Boiler Multiple Temperatures Number of Units Model Required Pipe Sizes MAY Substitute Number of Units Model 10Multiple Boilers Non-Zoned Primary/Secondary Piping Gas connections Connecting gas supply pipingPropane Gas Natural gasSingle Unit Natural Gas Pipe Capacity Chart Check inlet gas supplyLength of Pipe in Straight Feet for 1/2 PSI Gas 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 boiler2Operating Instructions Natural Gas Propane Set space heating operationVerify DHW mode Configuration of the cascadeSet domestic hot water DHW operation 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 boiler control moduleAccess modes InstallerUser Call for Heat Information Dial Function Service technician Maintenance Maintenance and annual startupOwner maintenance See the Knight User’s Information Manual for InstructionsFlue vent system and air piping MaintenanceCheck water system Check expansion tankClean condensate trap Address reported problemsInspect boiler area Inspect boiler interiorCheck all boiler wiring Check ignition ground wiringCheck control settings Check flame signalReview with owner Cleaning boiler heat exchangerOiled bearing circulators Kit Part Component Number DescriptionPC Interface Diagrams2Wiring Diagram
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Manual 16 pages 57.5 Kb

81 - 286 specifications

Lochinvar 81 - 286 is a state-of-the-art boiler recognized for its efficiency and reliability in both residential and commercial applications. This high-performance heating solution is designed to meet the diverse needs of users while adhering to modern environmental standards.

One of the standout features of the Lochinvar 81 - 286 is its advanced condensing technology. This allows the unit to harness more heat from the combustion gases, significantly boosting its thermal efficiency. With an impressive efficiency rating of over 95%, users can expect lower energy bills and reduced carbon emissions, making this boiler an environmentally friendly choice.

The Lochinvar 81 - 286 incorporates a robust stainless steel heat exchanger that guarantees durability and longevity. This corrosion-resistant material not only prolongs the unit's life but also ensures consistent performance over time. Additionally, the heat exchanger’s design facilitates optimal heat transfer, further enhancing the boiler's efficiency.

In terms of control, the Lochinvar 81 - 286 features a user-friendly control interface that simplifies operation. The boiler is equipped with advanced modulation capabilities, allowing it to adjust its output based on real-time heating demands. This responsiveness reduces energy waste and optimizes comfort levels within the space it serves.

The boiler also supports a variety of installation configurations, providing flexibility for different building layouts. Its compact design allows for easy installation in restricted spaces, while versatile venting options facilitate integration into various systems.

Safety is a paramount consideration in the design of the Lochinvar 81 - 286. The unit comes with integrated safety features such as a built-in diagnostic system that alerts users to any potential issues before they escalate. This proactive technology helps in maintaining seamless operation and reducing downtime.

Finally, the Lochinvar 81 - 286 is compliant with the latest regulations and industry standards, ensuring that it meets the expectations of both consumers and environmental agencies. With its impressive combination of efficiency, durability, and advanced technology, the Lochinvar 81 - 286 stands out as a top choice for anyone seeking a high-performance heating solution. This boiler not only addresses the immediate needs of heating but also supports long-term sustainability initiatives, proving to be a wise investment for the future.
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