Lochinvar 151-286 operation manual Set space heating operation, Natural Gas Propane

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Outdoor Knight Boiler Installation & Operation Manual

7 Start-up(continued)

Check flame and combustion (continued)

NOTICE

Please note that the brackets ([]) denote

 

screen status.

 

4.Place the boiler into the active position by pressing the RIGHT SELECT [ON] key (FIG. 8-1, page 45).

5.Locate the pinhole button below the RESET button on the display board (FIG. 8-1). Insert a thin wire (such as a paper clip) into the hole and press the button once and hold for 5 seconds to place the boiler into Service Mode. In Service Mode the boiler will fire at ignition speed and will then modulate up to full fire.

6.Insert the probe from a combustion analyzer into the flue outlet opening.

7.Once the boiler has modulated up to full fire, measure the combustion. The values should be in the range listed in

Table 7A below. The CO levels should be less than 150 ppm for a properly installed unit.

If the combustion is not within the specified range, reference the Troubleshooting Section of the Outdoor Knight Boiler Service Manual for possible causes and corrective actions.

Table 7A Flue Products Chart

Natural Gas

Propane

 

 

 

 

CO2

O2

CO2

O2

 

 

 

 

8.0% - 10%

3.0% - 6.5%

9.0% - 11%

4.1% - 6.9%

 

 

 

 

8.Once the combustion analysis is complete, test the safety shutoff device by turning the manual shutoff switch to the OFF position and ensuring that the boiler shuts down and registers an alarm. Turn the manual shutoff switch to the ON position and reset the control.

9.Turn the main power off to the boiler.

10.Place the boiler back into normal operation.

Set space heating operation

Determine controlling sensor

For space heating systems, the temperature control can be based on one of three sensors; the inlet, outlet, or system supply sensor. The SMART SYSTEM control is programmed at the factory to control the temperature of the outlet sensor. The control will automatically switch to the system supply sensor once it is connected. If it is desired to base the temperature control on the inlet sensor, the appropriate parameter must be changed in the control. See the Outdoor Knight Boiler Service Manual for a detailed explanation of this procedure.

Verify space heat circulator mode

The Space Heating Mode controls both the system pump (if connected), and the boiler pump. When the SMART SYSTEM control receives a space heating call for heat, it turns on the system pump. If the boiler is not heating an indirect DHW (Domestic Hot Water) tank, and the set point is not met, it also turns on the boiler pump. After the space heating call for heat ends, the system pump continues to run for a short period of time. The system pump can be programmed to run continuously, except during outdoor shutdown. If the boiler pump was running, it continues to run for a short period of time as well. These pump delays are factory set to 30 seconds. If different delays are desired, the appropriate parameters in the control must be changed. See the Outdoor Knight Boiler Service Manual for a detailed explanation of this procedure.

Adjust set point temperature(s)

NOTICE

Please note that the brackets ([]) denote

 

screen status.

 

The NAVIGATION dial may be used during normal operation to adjust the space heating and tank set point temperatures.

1.From the Status Screen press the NAVIGATION dial.

2.Turn the NAVIGATION dial counterclockwise to select the appropriate set point.

3.Press the NAVIGATION dial to adjust the temperature.

4.Once the desired temperature is displayed, press the RIGHT SELECT [SAVE] key.

5.If necessary repeat Steps 3 and 4 to make adjustments to additional set points.

6.Press the RIGHT SELECT [HOME[ key to upload the changes.

7.If the RIGHT SELECT [SAVE] key is not pressed, the new settings will be discarded.

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Contents Save this manual for future reference Contents Please read before proceeding When servicing boilerStainless steel heat exchanger Outdoor Knight Boiler How it worksModels 151 Model Outdoor Knight Boiler Ahri Rating RatingsDetermine 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 286 Leveling the boilerHydronic piping Near boiler piping components Near boiler piping connections System temperature sensorCirculator sizing Indirect water heatersPressure FeetModel Minimum Pipe Pump Size GrundfosVariable speed pump setup Smart System / Multi-temperature loop control optionVariable 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 Gas connections Connecting gas supply pipingPropane Gas Natural gasCheck inlet gas supply Single Unit Natural Gas Pipe Capacity ChartLength of Pipe in Straight Feet for 1/2 PSI Gas Pressure Gas valve replacementInstallation must comply with Field wiringLine voltage connections Low voltage connectionsHigh gas pressure switch Outdoor temperature sensorLow gas pressure switch ThermostatAlarm contacts Flow switch Runtime contactsWiring of the cascade System supply sensor3Low Voltage Field Wiring Connections 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 operationConfiguration of the cascade Verify DHW modeSet domestic hot water DHW operation General Operating informationHow the boiler operates How the control module operatesProtection features Temperature controlBoiler temperature regulation Cascade Outdoor reset operationOperation Display Sequence of operationStandby, ready to start a new cycle Installer Access modesOutdoor Knight boiler control module UserCall for Heat Operating information Dial Function Service technician Maintenance Maintenance and annual startupOwner maintenance Maintenance Check water system Flue vent system and air pipingCheck expansion tank Check boiler relief valveCheck all boiler wiring Check ignition ground wiringCheck control settings Check flame signalReview with owner Cleaning boiler heat exchangerOiled bearing circulators Model Kit Part Component Number DescriptionPC Interface DiagramsHigh Voltage 120 VAC

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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