KBX-SER Rev E

Lochinvar 399 - 800 service manual KBX-SER Rev E

Page 44

Revision Notes: Revision B (ECO #C02407) reflects air pressure switch changes, changes made to the Circulation Pumps Section (page 22) and removal of references to the pocket pc.

Revision C (ECO #C02545) reflects the addition of references to periodic cleaning of screens in vent terminations and safety shutoff testing and instructions.

Revision D (ECO #C02738) reflects the addition of the Gas Valve Adjustment Procedure for a 399 model on page 41.

Revision E (ECO #CO2918) reflects the addition of Tank Sensor Open on page 36 along with updating the condensate trap image on page 24.

3/09

Image 44

Contents

Models 399 Contents Niosh stated First Aid Please read before proceedingHandling ceramic fiber materials When servicing boiler What is in this manual? ServiceMaintenance TroubleshootingService Near boiler pipingKnight XL display Menu / Exit UP DownControl inputs Smart Control Module Control outputsGeneral Operation How the boiler operatesHow the control module operates Sequence of operationSequence of operation BLR IgnitionBLR SH 41% Rate Display panel menu access Use this procedure to access menus from the display panelDisplay panel parameter access Value will appearTemperature Data Parameter tableControl Circulation Service Temperature settings Viewable and changeable control parametersDHW settings Outdoor air resetData logging FunctionsMaximum air temperature Shift reset curveMaximum SH set point Minimum SH set pointAnti-cycling Control modes SH controlling sensorSH source Boiler cascade addressCirculation pumps Service NotificationCascade offset Owner maintenance Maintenance Maintenance and annual startupService technician Maintenance Flue vent system and air piping Check water systemCheck expansion tank Check boiler relief valveCheck ignition ground wiring Check all boiler wiringCheck control settings Inspect ignition and flame sense electrodesReview with owner Check flame signalCleaning boiler heat exchanger Troubleshooting Before troubleshootingCheck control module fuses Check the followingNo Display No BurnerOperation Unit Does NotChecking temperature sensors Temperature ResistanceNoisy No PumpOperation Boiler Pump System PumpSwitch/LWCO FlowFlame SequenceAnti-cycling No Flame IgnNo Flame RunningAdjustable High Limit w/ManualFan Low Fan Speed LowFan High Fan Speed HighSensor Open Sensor ShortedTemp O/Shoot Rem Ctrl Flt ParametersProgr OpenService Blk Watch Dog ErrorNo Error Stored Low 24 VAC Combustion Analysis Procedure Gas Valve Adjustment Or Obstruction Gas Supply PressureModels 600 Gas valve adjustment procedureModel Page Page KBX-SER Rev E

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Lochinvar 399 - 800 service manual KBX-SER Rev E

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