Manuals / Lochinvar / Household Appliance / Water Heater

Lochinvar 1.3 service manual SYNC-SERRev H 01/12

Models: 1.3 1

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SYNC-SER Rev H

Revision Notes: Revision A (ECO #C02428) initial release.

Revision B (ECO #C03046) reflects changes made to the History, Details, and Graphs screen shots (pgs. 15, 33 and 34).

Revision C (ECO #CO2918) reflects the addition of Tank Sensor Open on page 50.

Revision D (ECO #C04062) reflects changes to the terminology in all SYNC manuals and labels from module to heat exchanger (exception: control module), edits made to the ceramic fiber material warning, removal of the stabilitor from FIG. 2-2 (C04057) along with the addition of the Low Water Flow Test Procedure (R02559).

Revision E (ECO #C04560) reflects the addition of Modbus to the manual and a new heat exchanger cleaning procedure.

Revision F (ECO #C06388) reflects the correction of “Manual Reset High Limit” instructions on page 15.

Revision G (ECO C07981) reflects the addition of the O-temp switch (Table 3F) and edits made to the Inputs diagram on page 7.

Revision H (ECO C09659) reflects the update of information within Section 3 “Troubleshooting” on page 43.

SYNC-SER Rev H

01/12

Image 56

Lochinvar 1.3 service manual SYNC-SERRev H 01/12

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 TroubleshootingService Manual 1 ServiceNear boiler piping Service Manual The SYNC display1 Service 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 InstallerService Manual Sequence of operation1 Service Parameter table Service ManualUSER ACCESS INSTALLER ACCESS1 Service OUTDOOR RESETUSER ACCESS INSTALLER ACCESSStatus Screen Viewable and changeable control parametersService Manual 2 heat exchangers 1 ServiceService Manual Service Manual Details ScreenDisplayed items are as follows 1 ServiceService Manual Service Manual Main Screen1 Service Setup ScreenService Manual Service/Setup Parameters Screen•Maximum Service Time - Service Mode allows the installer to control the fan speed of the individual control modules for the purposes of combustion analysis 1 ServiceService Manual Service Manual Set Point Parameters ScreenOutdoor Reset Parameters Screen 1 ServiceService Manual 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 0FNight Setback Parameters Screen 1 ServiceService Manual Cascade Operation Service ManualCascade Parameters Screen Pumps Parameters Screen 1 ServiceService Manual 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 Screen1 On 34 80 1 ServiceService Manual Service Manual Temps ScreenBurners Screen 1 ServiceService Manual Service Manual Graph Select ScreenHistory Screen 1 ServiceService Manual 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 ManualAlarm Screen 3 TroubleshootingService Manual 3 Troubleshooting continued Before troubleshootingCheck the following Check control module fusesFAULT CAUSECORRECTIVE ACTION 3 TroubleshootingService Manual Checking temperature sensors3 Troubleshooting continued 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