Lochinvar 151 - 801 service manual Service Notification

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1Service

Set Point at Maximum Volts

When programmed for BMS control through the 0 - 10V BMS input or through ModBus and the BMS Type is programmed as SETPOINT, the set point represented by the Volts at Maximum parameter (H4) is set by parameter H7. The minimum value is the Set Point at Minimum Volts setting H6 and the maximum is 190°F (88°C). The default value is 180°F (82°C).

On Volts

When programmed for BMS control through the 0 - 10V BMS input or through ModBus and the BMS Thermostat Input is set to INACTIVE, parameter H8 determines the 0 - 10V BMS input voltage at which the water heater is enabled. The minimum value is 0.5V and the maximum is 10.0V. The default value is 2.0V.

Off Differential Volts

When programmed for BMS control through the 0 - 10V BMS input or through ModBus and the BMS Thermostat Input is set to INACTIVE, parameter H9 determines how far below the On Volts setting H8 the 0 - 10V BMS input voltage must be in order to disable the water heater. The minimum value is 0.2V and the maximum is the On Volts setting H8. The default value is 1.0V.

I: Service Notification

Service Notification in Months

When the water heater control determines that a scheduled service is due based on days of installation, the water heater display will alternate the standard water heater display text with the message SERVICE DUE every 5 seconds. This parameter is adjustable by the installer by accessing parameter I1. The time range for this parameter is 0 months to 36 months. The default time is 0 months.

This feature has been disabled by the manufacturer. To enable this feature change parameter I1 to the desired time range.

Service Notification Running Time

When the water heater control determines that a scheduled service is due based on the hours of actual operation, the water heater display will turn yellow and a new status screen will appear informing the installer that maintenance is required. This parameter is adjustable by the installer by accessing parameter I2. The time range for this parameter is 0 hours to 100,000 hours. The default time is 8,760 hours.

Service Manual

Service Notification Cycles

When the water heater control determines that a scheduled service is due based on the number of water heater cycles, the water heater display will alternate the standard water heater display text with the message SERVICE DUE every 5 seconds. This parameter is adjustable by the installer by accessing parameter I3. The range for this parameter is 0 cycles to 100,000 cycles. The default is 50,000 cycles.

Reset Maintenance Reminder

Once servicing has been completed, the service notification counter should be reset. This parameter can be reset by the installer by accessing parameter I4. Once accessed, press the RESET key to reset the service notification counter.

Installer Name and Phone Number

NOTICE

Please note that the brackets ([]) denote

screen status.

 

 

When a Maintenance Reminder timer or counter has expired, a Maintenance Reminder screen will appear on the display. By programming the installer’s name and phone number, this information will appear on the Maintenance Reminder Screen at that time. This can be programmed by accessing parameter I5. When selected, another menu will appear with PHONE and NAME.

1.Rotate the NAVIGATION dial to point to the name/phone number to program and press the NAVIGATION dial. The screen will now display the selected item (either PHONE or NAME).

2.Press the NAVIGATION dial again. A cursor will appear at the bottom of the screen. By rotating the NAVIGATION dial, various numbers and characters will appear. When the desired number/character is found, press the NAVIGATION dial. The cursor will move to the next position.

3.Repeat this procedure until the entire message is

entered. If you make a mistake and wish to back up one character, select the back arrow (←) character and press the NAVIGATION dial.

4.When finished, press the RIGHT SELECT [SAVE] key to return to the previous menu.

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Contents Models 151 Contents Please read before proceeding Handling ceramic fiber materialsNiosh stated First Aid Maintenance What is in this manual?Service TroubleshootingService Armor water heater displaySmart System Control Board Control inputsSmart System Control Board Control outputsHow the water heater operates Access modesGeneral Operation Sequence of operationOperation Display Display panel menu access Button Screen Operation Display StatusDisplay panel parameter access Parameter table GeneralModes Viewable and changeable control parameters Functions DHW SettingsData Logging Anti-CyclingControl modes Minimum On/Off Time Circulation pumpsService Notification Maintenance Maintenance and annual startup Service technicianOwner maintenance Maintenance Check expansion tank Flue vent system and air pipingCheck water system Check water heater relief valveCheck control settings Check ignition ground wiringCheck all water heater wiring Perform start-up and checksReview with owner Check flame signalCleaning heat exchanger Oiled bearing circulatorsCheck control module fuses TroubleshootingBefore troubleshooting Check the followingOperation No DisplayNo Burner Unit Does NotWire Color R/BK and Y Wire Color G and Y Checking temperature sensorsTemperature F Resistance Ω Resistance TemperatureRelief Valve NoisyNo Pump OpeningFault Description Corrective Action Flow SwitchAnti-cycling Flame Fail IgnNo Flame RunningFlame Sequence Auto ResetManual Reset High LimitGV/Relay Fan LowFan Speed Low FailFlue Temp High Sensor ShortedLouver Proving Delta T HighService Blk Outlet Temp HighRem Ctrl Flt Fatal Error Watch Dog ErrorNo Error Stored Low 24 VACOr Obstruction Combustion Analysis ProcedureGas Valve Adjustment Gas Supply PressureGas valve adjustment procedure Models 151Model 4Gas Valve Adjustment Model Models 601

151 - 801 specifications

Lochinvar 151 - 801 is a high-efficiency commercial water heater designed to meet the demanding needs of various applications in the hospitality, healthcare, and educational sectors. This advanced system provides reliable hot water with enhanced performance while promoting energy conservation and sustainability.

One of the standout features of the Lochinvar 151 - 801 is its powerful heating capability. With a robust heating input of up to 150,000 BTU per hour, it ensures a steady supply of hot water even during peak demand times. The efficient heat exchanger design optimizes thermal performance, allowing for quicker recovery rates, which is essential for facilities requiring substantial hot water usage.

This model integrates cutting-edge technologies to maximize energy efficiency. Utilized in the Lochinvar 151 - 801 is the Smart System control technology, which provides precise temperature management and diagnostics. This feature not only enhances operation efficiency but simplifies service and maintenance by providing real-time data and alerts, leading to reduced downtime.

Additionally, the Lochinvar 151 - 801 employs a stainless-steel tank construction that promotes durability and robustness. The tank is adequately insulated to minimize heat loss, thus keeping energy costs down. Its compact design also allows for easy installation in various spaces, including those with limited footprints.

Moreover, the unit features advanced combustion technology, including a modulating gas valve that adjusts the flame size according to demand, promoting even greater efficiency. This ensures that the water heater operates at optimum performance levels, reducing fuel consumption while ensuring a consistent supply of hot water.

Safety is a primary concern for Lochinvar, and the 151 - 801 model includes several integrated safety features, such as an ignition safety shutoff and a temperature/pressure relief valve. These systems work together to provide peace of mind while ensuring the unit operates safely within its designated parameters.

In conclusion, the Lochinvar 151 - 801 is an exemplary choice for commercial applications, offering powerful performance, efficient technologies, durable construction, and enhanced safety features. With its combination of high output and advanced monitoring capabilities, it stands as a reliable solution for organizations seeking an effective hot water heating solution.
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