Lochinvar 150 - 800 service manual

Page 36

Revision Notes: Revision B (AW-SER-Rev B) reflects the addition of the Dungs information to the manual.

Revision C (ECO #C02407) reflects the addition of the air pressure switch, FIG. 3-1, removal of pocket pc references and changes made to the Circulation Pump section (page 15).

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

Revision E (ECO #C02738) reflects the addition of the Gas Valve Adjustment Procedure for a 399 model on page 33.

Revision F (ECO #C03296) reflects updates made to the condensate trap image (FIG. 2-1) on page 17.

Revision G (ECO #C04150) reflects the addition of Models 600 - 800.

Revision H (ECO #C05457) reflects the new LWCO on the Control Inputs image on page 6 (#C04031), update the HEX cleaning procedure to reflect the new HEX cleaning kit (#R02634), and updates to the ceramic fiber warning.

AW-SER Rev H

4/10

Image 36

Contents Models 150 Contents Please read before proceeding Handling ceramic fiber materialsNiosh stated First Aid What is in this manual? ServiceMaintenance TroubleshootingService Armor water heater displayControl inputs Control outputs General Operation How the water heater operatesSequence of operation Saving parametersSequence of operation Display panel menu access Use this procedure to access menus from the display panelDisplay panel parameter access Button Operation Display CommentsParameter table WHRViewable and changeable control parameters Not used Data loggingWHR settings FunctionsNot used Control modes Service Notification Circulation pumpsMaintenance Maintenance and annual startup Service technicianOwner maintenance Maintenance Flue vent system and air piping Check water systemCheck expansion tank Check water heater relief valveCheck ignition ground wiring Check all water heater wiringCheck control settings Perform start-up and checksCheck flame signal Cleaning heat exchangerReview with owner Oiled bearing circulatorsTroubleshooting Before troubleshootingCheck control module fuses Check the followingNo Display No BurnerOperation Unit Does NotChecking temperature sensors Temperature F Resistance ΩNoisy No PumpRelief Valve OpeningFlow Switch FlameSequence GV/RelayNo Flame Ign No Flame RunningManual Reset High LimitFan Low Fan Speed LowFan High Fan Speed HighSensor Open Sensor ShortedRem Ctrl Flt ParametersProgr Service Blk Watch Dog ErrorNo Error Stored Low 24 VACCombustion Analysis Procedure Gas Valve AdjustmentOr Obstruction Gas Supply PressureGas valve adjustment procedure Models 150Model 4Gas Valve Adjustment Model Models 600