Lochinvar 150 - 800 instruction

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

Page 36

Image 36

Contents

Models 150 Contents Please read before proceeding Handling ceramic fiber materialsNiosh stated First Aid What is in this manual? ServiceMaintenance Troubleshooting Service Armor water heater display Control inputs Control outputs General Operation How the water heater operatesSequence of operation Saving parameters Sequence of operation Display panel menu access Use this procedure to access menus from the display panel Display panel parameter access Button Operation Display Comments Parameter table WHR Viewable and changeable control parameters Not used Data logging WHR settings FunctionsNot used Control modes Service Notification Circulation pumps Maintenance Maintenance and annual startup Service technicianOwner maintenance Maintenance Flue vent system and air piping Check water systemCheck expansion tank Check water heater relief valve Check ignition ground wiring Check all water heater wiringCheck control settings Perform start-up and checks Check flame signal Cleaning heat exchangerReview with owner Oiled bearing circulators Troubleshooting Before troubleshootingCheck control module fuses Check the following No Display No BurnerOperation Unit Does Not Checking temperature sensors Temperature F Resistance Ω Noisy No PumpRelief Valve Opening Flow Switch FlameSequence GV/Relay No Flame Ign No Flame Running Manual Reset High LimitFan Low Fan Speed Low Fan High Fan Speed HighSensor Open Sensor Shorted Rem Ctrl Flt ParametersProgr Service Blk Watch Dog ErrorNo Error Stored Low 24 VAC Combustion Analysis Procedure Gas Valve AdjustmentOr Obstruction Gas Supply Pressure Gas valve adjustment procedure Models 150Model 4Gas Valve Adjustment Model Models 600

Lochinvar 150 - 800 service manual

Models: 150 - 800