Lochinvar 151-286 operation manual 151 211 286

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Outdoor Knight Boiler Installation & Operation Manual

3 Hydronic piping

Figure 3-7Multiple Boilers - Multiple Temperatures

Number of Units

 

 

 

Model

2

3

4

5

6

7

8

 

 

 

 

 

 

Required Pipe Sizes

 

 

 

 

 

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"

 

 

 

 

 

 

 

 

WIRES TO

 

 

 

 

 

 

 

 

 

 

LOOP

 

 

 

PRESSURE

TEMPERATURE

TEMPERATURE

TEMPERATURE

 

SENSORS

 

 

 

 

 

 

 

BACKFLOW

REDUCING VALVE

LOOP #1

LOOP #2

LOOP #3

MIXING VALVES

 

 

PREVENTER

 

 

 

 

 

 

 

 

 

PRESSURE

 

 

 

 

 

(TYPICAL)

 

 

 

GAUGE

 

 

 

 

 

 

 

 

 

MAKE

SYSTEM

 

 

 

 

 

 

 

 

 

UP

SUPPLY

 

 

 

 

 

 

 

 

 

WATER

SENSOR

 

 

 

 

 

 

 

 

 

AIR SEPARATOR

 

 

EXPANSION

 

 

24V

 

 

TANK

 

 

SIGNAL

 

 

 

 

 

TO MIXING

 

MAY SUBSTITUTE

 

 

VALVES

 

LOW LOSS HEADER

 

 

 

BALL VALVE

 

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

 

 

(TYPICAL)

 

 

120VAC TO PUMPS

 

 

DRAIN POINT

 

 

 

 

 

(TYPICAL)

 

BOILER

MULTI-TEMP

 

 

 

 

 

 

 

 

CIRCULATOR

LOOP CONTROL

 

 

 

 

 

(OPTIONAL)

 

 

 

 

 

 

SHIELDED CABLE TO

 

 

FLOW CHECK

DOMESTIC

BOILER CONTROL

 

 

 

HOT

 

 

VALVE

HOT WATER

ANTI-SCALD

WATER

 

 

 

CIRCULATOR

MIXING

OUT

Y-STRAINER

 

 

 

VALVE

COLD

(RECOMMENDED)

 

 

 

WATER

 

 

 

 

 

IN

 

 

TEMPERATURE /

 

 

 

UNION

BOILER

PRESSURE

BOILER

INDIRECT

(TYPICAL)

GAUGE

 

 

DRAIN

 

DHW TANK

IMG00373

CAUTION

NOTICE

Mixing valves are required for the protection of low temperature loops.

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.

Indoor tank shown for illustration purposes.

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Contents Save this manual for future reference Contents When servicing boiler Please read before proceedingOutdoor Knight Boiler How it works Stainless steel heat exchangerModels 151 Model Ratings Outdoor Knight Boiler Ahri RatingBefore locating the boiler, check Installation must comply withDetermine boiler location Prevent combustion air contamination Provide clearancesOutdoor vent / air intake location Flooring and foundation Gas conversions Prepare boilerRemove boiler from wood pallet Leveling the boiler 286Hydronic piping Near boiler piping components System temperature sensor Near boiler piping connectionsCirculator sizing Indirect water heatersFeet PressureModel Minimum Pipe Pump Size GrundfosSmart System / Multi-temperature loop control option Variable speed pump setupVariable speed pump option UP26-96 FC/VS IFC VS Stratos 1.25 3 xZone #1 Number of Units Model Required Pipe Sizes 6Single Boiler Multiple Temperatures 151 211 286 IMG00374 Number of Units 10Multiple Boilers Non-Zoned Primary/Secondary Piping Connecting gas supply piping Gas connectionsNatural gas Propane GasLength of Pipe in Straight Feet for 1/2 PSI Single Unit Natural Gas Pipe Capacity ChartCheck inlet gas supply Gas valve replacement Gas PressureField wiring Installation must comply withLine voltage connections Low voltage connectionsOutdoor temperature sensor High gas pressure switchLow gas pressure switch ThermostatFlow switch Runtime contacts Alarm contactsWiring of the cascade System supply sensor3Low Voltage Field Wiring Connections Condensate disposal Condensate drainFreeze protection when used Start-upCheck/control water chemistry Fill and test water systemCheck for gas leaks Check thermostat circuitsInspect/fill condensate system Inspect/check condensate lines and fittingsFinal checks before starting the boiler Start the boilerIf boiler does not start correctly Check system and boiler2Operating Instructions Set space heating operation Natural Gas PropaneSet domestic hot water DHW operation Verify DHW modeConfiguration of the cascade Operating information GeneralHow the boiler operates How the control module operatesTemperature control Protection featuresBoiler temperature regulation Outdoor reset operation CascadeSequence of operation Operation DisplayStandby, ready to start a new cycle Access modes InstallerOutdoor Knight boiler control module UserCall for Heat Operating information Dial Function Owner maintenance Maintenance Maintenance and annual startupService technician Maintenance Flue vent system and air piping Check water systemCheck expansion tank Check boiler relief valveCheck ignition ground wiring Check all boiler wiringCheck control settings Check flame signalCleaning boiler heat exchanger Review with ownerOiled bearing circulators Model Kit Part Component Number DescriptionDiagrams PC Interface120 VAC High Voltage

151-286 specifications

Lochinvar 151-286 is a high-efficiency water heater designed for both residential and commercial applications. This model stands out due to its advanced technology, user-friendly controls, and robust construction, making it a reliable choice for those seeking to optimize their hot water supply.

One of the key features of the Lochinvar 151-286 is its impressive heating capacity. With a maximum input of 286,000 BTU/hr, it can efficiently meet hot water demands for a variety of settings, including hotels, restaurants, and other commercial facilities. This substantial output ensures that even during peak usage hours, hot water availability is maximized, reducing wait times and enhancing customer satisfaction.

The water heater utilizes a state-of-the-art condensing technology that maximizes efficiency by capturing and utilizing flue gas heat. This process allows the Lochinvar 151-286 to achieve an impressive thermal efficiency rating of up to 98%. The benefit of such high efficiency translates to significant energy savings and reduced operational costs over time, making it an environmentally friendly option as well.

The Lochinvar 151-286 is equipped with a user-friendly control system featuring advanced microprocessor controls. These controls allow for precise temperature management and monitoring, enabling users to set optimal temperatures according to their specific needs. Additionally, the heater includes built-in diagnostics, allowing for easy troubleshooting and maintenance, which minimizes downtime and extends the life of the unit.

Another standout characteristic of the Lochinvar 151-286 is its durable construction. Built with high-quality materials, including a robust stainless steel heat exchanger, this model is designed to withstand the rigors of daily use. The unit also features a compact design, which facilitates easy installation in various locations, whether it be in a utility closet or alongside existing equipment.

Safety features are paramount in the Lochinvar 151-286, with multiple safeguards in place to protect against overheating and other potential issues. The unit is designed to operate reliably, ensuring peace of mind for users who depend on consistent hot water availability.

In summary, the Lochinvar 151-286 water heater combines high capacity, exceptional efficiency, and user-friendly technology, making it an excellent choice for those seeking reliable hot water solutions. Its advanced features deliver performance and durability that stand out in the competitive market of water heating systems.
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