Lochinvar 400 - 801 service manual Service Notification

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1Service (continued)

Set Point at Minimum 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 Minimum parameter (J2) is set by parameter J6. The minimum value is 32°F (0°C) and the maximum is the Set Point at Maximum Volts setting J7. The default value is 70°F (21°C).

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 (J4) is set by parameter J7. The minimum value is the Set Point at Minimum Volts setting J6 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 J8 determines the 0 - 10V BMS input voltage at which the boiler 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 J9 determines how far below the On Volts setting J8 the 0 - 10V BMS input voltage must be in order to disable the boiler. The minimum value is 0.2V and the maximum is the On Volts setting J8. The default value is 1.0V.

K: Service Notification

Service Notification in Months

When the boiler control determines that a scheduled service is due based on days of installation, the boiler display will alternate the standard boiler display text with the message SERVICE DUE every 5 seconds. This parameter is adjustable by the installer by accessing parameter K1. 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 K1 to the desired time range.

Service Notification Running Time

When the boiler control determines that a scheduled service is due based on the hours of actual operation, the boiler 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 K2. 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 boiler control determines that a scheduled service is due based on the number of boiler cycles, the boiler display will alternate the standard boiler display text with the message SERVICE DUE every 5 seconds. This parameter is adjustable by the installer by accessing parameter K3. 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 K4. 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 K5. 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 400 Contents Please read before proceeding Handling ceramic fiber materialsNiosh stated First Aid When servicing boiler Troubleshooting What is in this manual?Service MaintenanceNear boiler piping ServiceNavigation Dial Knight XL displayLOW Voltage Connection Board Control inputsControl outputs Smart Control ModuleHow the control module operates Access modesGeneral Operation How the boiler operatesOperation Display From previous page Sequence of Operation Button Screen Operation Display Status Display panel menu accessDisplay panel parameter access General Parameter tableSettings Reset Notification Software Version Temperature units C / FViewable and changeable control parameters Date and TimeTemperature Settings Data LoggingFunctions DHW Settings Outdoor Reset Anti-Cycling BMS Thermostat Input Active / Inactive SH Ramp DelayControl modes Controlling SensorMinimum On/Off Time Cascade OffsetCirculation pumps Service Notification Maintenance Maintenance and annual startup Service technicianOwner maintenance Maintenance Check boiler relief valve Flue vent system and air pipingCheck water system Check expansion tankInspect ignition and flame sense electrodes Check ignition ground wiringCheck all boiler wiring Check control settingsModel Kit Part Component Number Description Check flame signalCleaning boiler heat exchanger Review with ownerCheck the following TroubleshootingBefore troubleshooting Check control module fusesUnit Does Not No DisplayNo Burner OperationResistance Temperature Checking temperature sensorsTemperature Resistance Wire Color R/BK and Y Wire Color G and YDHW Pump NoisyNo Pump Boiler Pump System PumpFlow Switch/LWCOFlame Fail Ign Anti-cyclingFan Low Auto ResetFlame Sequence High LimitFan Speed High GV/RelayFail Fan HighHigh Flue Temp HighDelta T High Outlet TempService Blk Rem Ctrl FltParameters Progr Write EEProm Watch Dog ErrorNo Error Stored Low 24 vacGas Supply Pressure Combustion Analysis ProcedureGas Valve Adjustment Or ObstructionGas valve adjustment procedure ModelModels 601 Page