Lochinvar 150 - 800 service manual Maintenance

Page 17

Service Manual

2Maintenance (continued)

￿WARNING

￿WARNING

￿WARNING

Follow the service and maintenance procedures given throughout this manual and in component literature shipped with the water heater. Failure to perform the service and maintenance could result in damage to the water heater or system. Failure to follow the directions in this manual and component literature could result in severe personal injury, death, or substantial property damage.

The water heater should be inspected annually only by a qualified service technician. In addition, the maintenance and care of the water heater designated in Table 2A and explained on the following pages must be performed to assure maximum water heater efficiency and reliability. Failure to service and maintain the water heater and system could result in equipment failure.

Electrical shock hazard – Turn off power to the water heater before any service operation on the water heater except as noted otherwise in this instruction manual. Failure to turn off electrical power could result in electrical shock, causing severe personal injury or death.

Address reported problems

Figure 2-1Condensate Trap

1. Inspect any problems reported by the owner and

RETAINING

correct before proceeding.

SCREW

Inspect water heater area

 

1. Verify that water heater area is free of any combustible

 

materials, gasoline and other flammable vapors and

 

liquids.

 

2. Verify that air intake area is free of any of the

 

contaminants listed in Section 1 of the Armor Water

 

Heater Installation and Operation Manual. If any of

 

these are present in the water heater intake air vicinity,

 

they must be removed. If they cannot be removed,

 

reinstall the air and vent lines per this manual and the

 

Armor Water Heater Installation and Operation

 

Manual.

CONDENSATE FROM

 

HEAT EXCHANGER

2” PVC CAP WITH

BLOCKED DRAIN SWITCH

PVC TEE ASSEMBLY (FACTORY SUPPLIED)

TO FLOOR

DRAIN

Inspect water heater interior

1.Remove the front access cover and inspect the interior of the water heater.

2.Vacuum any sediment from inside the water heater and components. Remove any obstructions.

￿WARNING

The condensate trap must be filled with water during all times of water heater operation to avoid flue gas emission from the condensate drain line. Failure to fill the trap could result in severe personal injury or death.

Clean condensate trap

1.Inspect the condensate drain line, condensate PVC fittings, and condensate trap.

2.Remove the PVC cap retaining screw from the PVC cap (FIG. 2-1).

3.Remove the 2 inch PVC cap with the switch located at the top of the trap (FIG. 2-1).

4.Remove any sediment in the trap.

5.Fill with fresh water until the water begins to pour out of the drain.

6.Replace the cap. Press the cap onto the trap until the cap makes contact with the drain.

7.Replace the retaining screw.

Check all piping for leaks

￿WARNING Eliminate all system or water heater leaks. Leaking water may cause severe property

damage.

1.Inspect all water and gas piping and verify to be leak free.

2.Look for signs of leaking lines and correct any problems found.

3.Check gas line using the procedure found in Section 7 - Gas Connections of the Armor Water Heater Installation and Operation Manual.

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Contents Models 150 Contents Niosh stated First Aid Please read before proceedingHandling ceramic fiber materials Service What is in this manual?Maintenance TroubleshootingArmor water heater display ServiceControl inputs Control outputs How the water heater operates General OperationSequence of operation Saving parametersSequence of operation Use this procedure to access menus from the display panel Display panel menu accessButton Operation Display Comments Display panel parameter accessWHR Parameter tableNot used Data logging Viewable and changeable control parametersNot used Control modes WHR settingsFunctions Circulation pumps Service NotificationOwner maintenance Maintenance Maintenance and annual startupService technician Maintenance Check water system Flue vent system and air pipingCheck expansion tank Check water heater relief valveCheck all water heater wiring Check ignition ground wiringCheck control settings Perform start-up and checksCleaning heat exchanger Check flame signalReview with owner Oiled bearing circulatorsBefore troubleshooting TroubleshootingCheck control module fuses Check the followingNo Burner No DisplayOperation Unit Does NotTemperature F Resistance Ω Checking temperature sensorsNo Pump NoisyRelief Valve OpeningFlame Flow SwitchSequence GV/RelayNo Flame Ign Running No FlameHigh Limit Manual ResetFan Low Fan Speed LowFan Speed High Fan HighSensor Open Sensor ShortedProgr Rem Ctrl FltParameters Watch Dog Error Service BlkNo Error Stored Low 24 VACGas Valve Adjustment Combustion Analysis ProcedureOr Obstruction Gas Supply PressureModel Gas valve adjustment procedureModels 150 Models 600 4Gas Valve Adjustment Model