Lochinvar 151 operation manual Water heater temperature regulation

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11 Operating information

Monitor external limits

Connections are provided on the connection board for external limits such as flow switch, gas pressure switches, and a louver proving switch. The SMART SYSTEM will shut off the burner and inhibit relighting whenever any of these external limits open.

Runtime and alarm outputs

The water heater provides dry contacts for indicating when the water heater is running, and when it is unable to operate.

Runtime and cycle counting

The control uses a timer to monitor the total hours of burner operation. The timer monitors the time the water heater is firing.

The control uses two (2) ignition counters to monitor the amount of water heater cycles. The first counter counts all ignitions of the control. The second counter counts only ignition attempts that have failed.

Service reminder

The control can be programmed for service reminder notification. This notification will become active when either a set amount of time has expired, or a set amount of running hours or cycles has expired (all adjustable by the installer). The display will show a Maintenance Required screen. The service reminder notification can be reset or disabled by the installer.

The time dependent feature has been disabled by the manufacturer. To enable this feature change parameter I1 to the desired time range, reference the Armor Service Manual for details regarding parameters.

Error logging

The control will hold in memory the last 10 lockouts as well as the last 10 blockings. The date and time of the occurrence will be recorded as well. Only the 10 most current occurrences of each will be held in memory.

Water heater temperature regulation

Operating temperature (target)

The SMART SYSTEM control module senses water temperature and regulates water heater firing and firing rate to achieve a target temperature. The target temperature can be set between 60°F and 190°F.

High limit operations

The Armor water heater is equipped with a fixed automatic reset hight limit and an adjustable manual reset high limit. The automatic reset high limit has a set point of 200°F and the manual reset high limit has a maximum set point of 210°F.

Installation & Operation Manual

When the outlet temperature exceeds 200°F, the automatic high limit action occurs. The water heater shuts down until the outlet water temperature cools below 190°F, and a 60 second timer has expired. If the outlet temperature continues to increase, the manual reset high limit action will occur at 210°F.

High limit test procedure

NOTICE

Please note that the brackets ([]) denote

 

screen status.

 

1.Turn ON the main power to the water heater by placing the ON/OFF switch in the ON position.

2.If water heater status reads [SHUTDOWN] place the water heater into the active position by pressing the RIGHT SELECT [ON] key.

3.Locate the pinhole (SERVICE button) below the RESET button on the display board. Insert a thin wire (such as a paper clip) into the hole and press the button once, hold for five (5) seconds to place the water heater into Service Mode. In Service Mode the water heater will fire at ignition speed and will then modulate up to full fire.

4.From the Status Screen, press the NAVIGATION dial to access the Set Points Screen.

5.Press the LEFT SELECT [LIMITS] key.

6.Select the manual reset high limit (MRHL) by pressing the NAVIGATION dial.

7.Decrease the set point of the MRHL below the outlet temperature by turning the NAVIGATION dial counterclockwise.

8.Press the RIGHT SELECT [SAVE] key.

9.Press the RIGHT SELECT [HOME] key.

10.The new parameters will upload to the control and the MRHL will function causing water heater shutdown and [LOCKOUT] to be displayed.

11.Press the RESET button to clear the lockout.

12.Repeat Steps 4, 5 and 6.

13.Set the MRHL to the appropriate set point by turning the NAVIGATION dial clockwise.

14.Repeat Steps 8 and 9.

Low water cutoff protection

1.The SMART SYSTEM control module uses temperature sensing of both supply and return areas of the heat exchanger. If the flow rate is too low or the outlet temperature too high, the control module modulates and shuts the water heater down. This ensures water heater shutdown in the event of low water or low flow conditions.

2.Some codes and jurisdiction may accept these integral features of the control in lieu of requiring an additional limit control or low water cutoff. Consult local jurisdiction to determine. A low water cutoff is available from the factory (WTR20009).

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Contents Installation&OperationManual Models 151 What to do if YOU Smell GASContents When servicing the water heater Please read before proceedingArmor Water Heater How it works Stainless steel heat exchangerModels 151 Models 400 Models 601Ratings CSAInstallation must comply with Closet and alcove installationsDetermine water heater location Before locating the water heater, check1Closet Installation Minimum Required Clearances Residential garage installation Provide air openings to roomVent and air piping Flooring and foundationProducts to avoid Areas likely to have contaminantsDetermine water heater location Prepare water heater Gas conversionsRemove water heater from wood pallet Models 1513Installing Propane Orifice Model ModelModels 601 Leveling the water heaterGeneral venting Direct venting options Sidewall VentDirect venting options Vertical Vent Direct venting options Vertical Vent, Sidewall AirInstall vent and combustion air piping Requirements for installation in CanadaInstalling vent or air piping PVC/CPVC Vent piping materialsPVC/CPVC Air intake/vent connections Vent Pipe, and FittingsAir inlet pipe materials Stainless steel ventStainlesssteelairintake/ventconnections FlueFlue Intake Air Adapter Termination Model Kit NumberRemoving from existing vent Model Air Intake VentVent and air system Optional room air Vent, air piping and terminationModel Kit Number Description Air contaminationIf using the alternate sidewall termination Sidewall direct ventingVent/air termination sidewall Determine location3AClearance to Gravity Air Inlets Prepare wall penetrations Seal all wall cavitiesPrepare wall penetrations Alternate Field Supplied Option Multiple vent/air terminationsTermination and fittings Sidewall termination installation Sidewall termination optional concentric vent Models 151Description and usage 11 Concentric 13Concentric Vent Sidewall Attachment Multiventing sidewall terminationsVertical direct venting Vent/air termination verticalPrepare roof penetrations Multiple vent/air terminationsVertical termination installation Vertical termination optional concentric vent Models 151Multiventing vertical terminations Minimum Combustion AIR TypicalAlternate vertical concentric venting Concentric Venting ArrangementExisting vent as a chase 10Existing Vent as a ChaseFlow switch and relief valve installation Flow switch adjustmentSystem piping System water piping methodsScalding Piping componentsWater chemistry 4Single Heater Single Tank 2 Temperature Cold Water Supply Cold Water Supply Number of Units Model 8Double Heater Double Tank 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 pressureField wiring Installation must comply withLine voltage connections Low voltage connectionsTank thermostat Low gas pressure switch Louver proving switchHigh gas pressure switch Flow switchAlarm contacts Wiring of the cascadeRuntime contacts 3Low Voltage Field Wiring Connections Condensate disposal Condensate drainStart-up Check for gas leaks Inspect/fill condensate systemChlorine concentration less than 200 ppm Inspect/check condensate lines and fittingsFinal checks before starting the water heater Start the water heaterIf water heater does not start correctly Check system and water heaterFor Your Safety Read Before Operating 3Operating Instructions Models 400 Set tank set point temperature Verify WHR circulator modeSet water heater operation Natural Gas PropaneConfiguration of the cascade Set clockOperating information GeneralWater heater temperature regulation Installer CascadeSequence of the cascade UserSequence of operation Operation DisplayArmor water heater control module 1Control PanelWater heater Information Dial Function Maintenance Maintenance and annual startup Service technicianOwner maintenance Maintenance Check ignition ground wiring Check all water heater wiringCheck control settings Check water systemCheck flame signal Cleaning heat exchangerPerform start-up and checks Check burner flameCheck Delta T Oiled bearing circulatorsModel Kit Part Component Number Description Diagrams PC Interface2Wiring Diagram Page Page AWII-I-O Rev C
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151 specifications

Lochinvar 151,286 is a notable model in the realm of commercial water heating solutions, designed primarily for large-scale applications. This model incorporates advanced technologies and features that set it apart in terms of efficiency, usability, and reliability.

One of the hallmark features of Lochinvar 151,286 is its high-efficiency system that leverages condensing technology. This technology enables the unit to extract additional heat from exhaust gases, allowing it to operate at an impressive annual fuel utilization efficiency (AFUE) rating. This not only reduces energy consumption, but it also significantly lowers operational costs.

The Lochinvar 151,286 is equipped with a robust stainless steel heat exchanger, which provides both durability and enhanced thermal efficiency. This design withstands the rigors of high-demand environments, making it ideal for restaurants, schools, hospitals, or any facility requiring consistent hot water supply. Its compact footprint allows it to be installed in tight spaces without sacrificing performance.

Another standout characteristic is its intelligent control system. The built-in touchscreen interface offers users an intuitive way to manage settings, monitor performance, and troubleshoot issues. This smart technology aids in simplifying maintenance and improves overall system reliability. The unit also features advanced safety protocols, including multiple sensors that monitor operation and provide alerts in case of irregular performance.

In terms of capacity, the Lochinvar 151,286 can deliver an impressive output, accommodating varying demands with ease. Its innovative modulation capabilities allow the unit to adjust its heating output based on real-time hot water needs, ensuring unmatched comfort and efficiency.

Supporting the model’s performance are versatile connectivity options. Lochinvar 151,286 can integrate seamlessly with building management systems, allowing facility managers to monitor and control heating processes remotely. This level of connectivity not only enhances control but also supports energy-saving strategies across the facility.

In conclusion, Lochinvar 151,286 stands out as a premium choice for commercial water heating needs. With its high-efficiency ratings, durable construction, intelligent control system, impressive capacity, and versatile connectivity, it ensures that hot water is delivered reliably and efficiently, meeting the demands of modern businesses while reducing energy costs. This combination of technology and design makes it an essential component for any large-scale facility focused on performance and sustainability.
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