Lochinvar 151-286 operation manual Number of Units Model Required Pipe Sizes

Page 18

Outdoor Knight Boiler Installation & Operation Manual

3 Hydronic piping

Figure 3-5Multiple Boilers - Single Temperature Zoned with Circulators

 

 

 

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"

ZONE #1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PRESSURE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REDUCING VALVE PRESSURE

 

 

 

 

 

 

 

 

ZONE #2 ZONE #3 ZONE #4

BACKFLOW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GAUGE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PREVENTER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FLOW CHECK

MAKE UP WATER

SYSTEM SUPPLY

VALVE

 

SENSOR

(TYPICAL)

AIR SEPARATOR

 

 

ZONE CIRCULATORS

 

(TYPICAL)

 

EXPANSION

MAY SUBSTITUTE

TANK

LOW LOSS HEADER

 

BALL VALVE

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

(TYPICAL)

 

DRAIN POINT

 

(TYPICAL)

 

 

ANTI-SCALD

HOT

BOILER

MIXING VALVE

WATER

 

OUT

CIRCULATOR

 

DOMESTIC

 

 

 

 

HOT WATER

 

Y-STRAINER

CIRCULATOR

COLD

 

WATER

(RECOMMENDED)

 

IN

(TYPICAL)

 

 

TEMPERATURE /

UNION

 

(TYPICAL)

 

PRESSURE

 

DRAIN

 

GAUGE

 

 

BOILER 2

BOILER 1

INDIRECT

(MEMBER 1)

(LEADER)

DHW TANK

 

 

NOTICE

IMG00371

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 RatingInstallation must comply with Determine boiler locationBefore locating the boiler, check Provide clearances Outdoor vent / air intake location Flooring and foundationPrevent combustion air contamination Prepare boiler Remove boiler from wood palletGas conversions Leveling the boiler 286Hydronic piping Near boiler piping components Circulator sizing System temperature sensorNear boiler piping connections Indirect water heatersModel FeetPressure Minimum Pipe Pump Size GrundfosVariable speed pump option Smart System / Multi-temperature loop control optionVariable speed pump setup 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 GasSingle Unit Natural Gas Pipe Capacity Chart Check inlet gas supplyLength of Pipe in Straight Feet for 1/2 PSI Gas valve replacement Gas PressureLine voltage connections Field wiringInstallation must comply with Low voltage connectionsLow gas pressure switch Outdoor temperature sensorHigh gas pressure switch ThermostatWiring of the cascade Flow switch Runtime contactsAlarm contacts System supply sensor3Low 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 boiler2Operating Instructions Set space heating operation Natural Gas PropaneVerify DHW mode Configuration of the cascadeSet domestic hot water DHW operation How the boiler operates Operating informationGeneral How the control module operatesTemperature control Protection featuresBoiler temperature regulation Outdoor reset operation CascadeSequence of operation Operation DisplayStandby, ready to start a new cycle Outdoor Knight boiler control module Access modesInstaller UserCall for Heat Operating information Dial Function Maintenance Maintenance and annual startup Service technicianOwner maintenance Maintenance Check expansion tank Flue vent system and air pipingCheck water system Check boiler relief valveCheck control settings Check ignition ground wiringCheck all boiler wiring Check flame signalOiled bearing circulators Cleaning boiler heat exchangerReview with owner 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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