Lochinvar 151-286 Variable speed pump option, UP26-96 FC/VS IFC VS Stratos 1.25 3 x

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Outdoor Knight Boiler Installation & Operation Manual

3 Hydronic piping

Variable speed pump option

Table 3B Recommended Variable Speed Pumps

Minimum Temperature Rise*

Model

 

Pump

 

Grundfos

TACO

Wilo

 

UP26-96 FC/VS

0013 IFC VS

Stratos 1.25 3 x 30

151

21

20

19

211

27

25

24

286

27

24

22

*The minimum temperature rise is derived from the chart in FIG. 3-3 with the firing rate and pump speed at 100% as shown in the table above.

The shaded regions of pump coverage are only available for applications with 230V (60 Hz) supply voltage, all others are to be 115V. (A field supplied relay is required to connect the 230V pump listed in the shaded area in Table 3B to the boiler high voltage terminal strip.)

Variable speed pump setup

Before operation, ensure the following:

-Pump is set for an input signal of 0 - 10Vdc by the dip switches on the pump control

-Pump is set for external signal control (if applicable)

-Pump is set for linear output (if applicable)

-If pump does not come equipped with a 0 - 10 Vdc input option, an optional module will be required from the vendor

NOTICE

Pump sizing and flow requirements are based on 20 feet of piping, 4 - 90° elbows, and 2 - fully ported ball valves.

NOTICE

It is required that near boiler piping systems utilize the Primary/Secondary configuration shown in FIG. 3-10 only. The use of other near boiler piping configurations could result in improper building and system flow rates leading to inadvertent boiler high limit shutdowns and poor system performance.

SMART SYSTEM / Multi-temperature loop control option

The outdoor boiler is capable of producing up to three (3) set point temperatures to meet different space heating demands. When using more than one temperature demand it is necessary to protect the lower temperature loop from overheating. To help aid with this protection, Lochinvar offers the Multi- Temperature Loop Control Board Kit (RLY30086).

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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 RatingDetermine boiler location Installation must comply withBefore locating the boiler, check Outdoor vent / air intake location Flooring and foundation Provide clearancesPrevent combustion air contamination Remove boiler from wood pallet Prepare boilerGas conversions 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 GasCheck inlet gas supply Single Unit Natural Gas Pipe Capacity ChartLength of Pipe in Straight Feet for 1/2 PSI 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 PropaneConfiguration of the cascade Verify DHW modeSet domestic hot water DHW operation 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 Service technician Maintenance Maintenance and annual startupOwner maintenance 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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