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Lochinvar 1.3 service manual Service Manual, ModBus Timeout

Models: 1.3 1

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•BMS Modulation at Minimum Voltage - Determines the modulation rate of the unit or cascade when the BMS input voltage is at or below the setting of the BMS Voltage at Minimum Modulation parameter. This parameter is only active when the BMS Type is set to modulation rate. This parameter can only be changed by the installer. The range of this parameter is 0% to 100%. The default value is 14.5%.

Service Manual

1 Service

ModBus Timeout

•BMS Modulation at Minimum Voltage - Determines the modulation rate of the unit or cascade when the BMS input voltage is at or below the setting of the BMS Voltage at Minimum Modulation parameter. This parameter is only active when the BMS Type is set to modulation rate. This parameter can only be changed by the installer. The range of this parameter is 0% to 100%. The default value is 14.5%.

•BMS Modulation at Maximum Voltage - Determines the modulation rate of the unit or cascade when the BMS input voltage is at or above the setting of the BMS Voltage at Maximum Modulation parameter. This parameter is only active when the BMS Type is set to modulation rate. This parameter can only be changed by the installer. The range of this parameter is 14.5% to 100%. The default value is 100%.

•BMS Voltage at Minimum Modulation - Determines the voltage at which the external signal begins to increase the modulation rate (power). Below this voltage, the modulation rate (power) will be at the setting of the BMS Modulation at Minimum Voltage parameter. This parameter is only active when the BMS Type is set to modulation rate (power). This parameter can only be changed by the installer. The range of this parameter is 0V to 10V. The default value is 2V.

•BMS Voltage at Maximum Modulation - Determines the voltage at which the external signal forces the modulation rate (power) to the setting of the BMS Modulation at Maximum Voltage parameter. This parameter is only active when the BMS Type is set to modulation rate (power). This parameter can only be changed by the installer. The range of this parameter is 2V to 10V. The default value is 10V.

Reference page 18 for information regarding changing parameters.

Time - The time is displayed in the upper right-hand corner of the display. It is displayed in 24 hour format. Reference the night setback parameters on page 24 for information regarding adjusting the date and time.

Back button - Pressing this button will back the screen up to the previous screen.

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Lochinvar 1.3 service manual Service Manual, ModBus Timeout

Contents

Service Manual Models: 1.0, 1.3, andHazard definitions Please read before proceedingDANGER NOTICEWhen servicing boiler – Handling ceramic fiber materialsBoiler water – Boiler operation –What is in this manual? ServiceMaintenance TroubleshootingNear boiler piping 1 ServiceService Manual 1 Service The SYNC displayService Manual Control inputs Service ManualSECONDARY SMART CONTROL MODULE PRIMARY SMART CONTROL MODULEControl outputs 1 ServiceService Manual SECONDARY SMART TOUCH CONTROL MODULE PRIMARYGeneral Operation Service ManualAccess modes Installer1 Service Sequence of operationService Manual Parameter table Service ManualUSER ACCESS INSTALLER ACCESS1 Service OUTDOOR RESETUSER ACCESS INSTALLER ACCESSService Manual Viewable and changeable control parametersStatus Screen Service Manual 1 Service2 heat exchangers Service Manual Details ScreenService Manual 1 ServiceDisplayed items are as follows Service Manual Main Screen1 Service Setup ScreenService Manual Service/Setup Parameters ScreenService Manual 1 Service•Maximum Service Time - Service Mode allows the installer to control the fan speed of the individual control modules for the purposes of combustion analysis Service Manual Set Point Parameters ScreenService Manual 1 ServiceOutdoor Reset Parameters Screen Service Manual •Boost Increment - If a system heat call last longer than the programmed boost time setting and there have been no Hot Water Generation calls, the control will increase the water temperature set point by the amount in this parameter. If the system heat call continues through another time period, the set point will be increased again. This will continue until either the system heat call ends, a maximum of 20 increases has occurred, or the maximum set point has been reached. Once the system heat call has been satisfied the set point will revert back to its calculated setting. This parameter can be changed by the user or the installer. The temperature range of this parameter is 0 to 45F. The default value is 0F. This feature will be active if this parameter is set to anything other than 0FService Manual 1 ServiceNight Setback Parameters Screen Cascade Parameters Screen Service ManualCascade Operation Service Manual 1 ServicePumps Parameters Screen Service Manual ModBus Timeout0 - 10Vdc BMS Parameters Screen 0-10VdcOperation1 Service Service ManualModBus Timeout •BMS Modulation at Minimum Voltage - Determines the modulation rate of the unit or cascade when the BMS input voltage is at or below the setting of the BMS Voltage at Minimum Modulation parameter. This parameter is only active when the BMS Type is set to modulation rate. This parameter can only be changed by the installer. The range of this parameter is 0% to 100%. The default value is 14.5%Service Manual Cascade ScreenService Manual 1 Service1 On 34 80 Service Manual Temps ScreenService Manual 1 ServiceBurners Screen Service Manual Graph Select ScreenService Manual 1 ServiceHistory Screen Service Manual Service Mode Screen2 Maintenance Maintenance and annual startup Service technicianOwner maintenance see the following pages for instructions2 Maintenance continued Address reported problemsClean condensate trap Inspect boiler area2 Maintenance Flue vent system and air pipingCheck water system Check expansion tankCheck ignition ground wiring Check all boiler wiringCheck control settings Inspect ignition and flame sense electrodesCheck flame signal Cleaning boiler heat exchangerReview with owner 2 Maintenance continuedTest low water flow conditions 2 MaintenanceTest procedure Service ManualService Manual 3 TroubleshootingAlarm Screen 3 Troubleshooting continued Before troubleshootingCheck the following Check control module fusesFAULT CAUSECORRECTIVE ACTION 3 Troubleshooting3 Troubleshooting continued Checking temperature sensorsService Manual 3 Troubleshooting FAULTService Manual Table 3E Troubleshooting Chart - Noisy SystemDESCRIPTION 3 Troubleshooting continuedFAULT CORRECTIVE ACTION3 Troubleshooting FAULTService Manual DESCRIPTIONFAULT DESCRIPTIONCORRECTIVE ACTION 3 Troubleshooting continued3 Troubleshooting FAULTAutomatic Reset High Limit DESCRIPTION3 Troubleshooting continued FAULTService Manual DESCRIPTION3 Troubleshooting FAULTService Manual DESCRIPTION3 Troubleshooting continued FAULTService Manual DESCRIPTIONCombustion Analysis Procedure POSSIBLE CAUSE3 Troubleshooting CORRECTIVE ACTIONGas valve adjustment procedure 3 Troubleshooting continuedService Manual Figure 3-2 Gas Valve Adjustment: ModelSYNC-SERRev H 01/12