Lochinvar 1 service manual Combustion Analysis Procedure, Or Obstruction, Gas Supply Pressure

Page 54

3 Troubleshooting

Combustion Analysis Procedure

1.Turn the main power off to the boiler by placing the “On/Off” switch in the OFF position.

2.Remove the flue temperature sensors from the flue pipe connections. Note: Combustion measurements will be made at this point.

3.Turn the main power on to the boiler by placing the “On/Off” switch in the ON position.

4.Navigate to the Service Mode Screen from the Status Screen by pressing the MAIN button and then the SERVICE MODE button.

5.On the Service Screen place Heat Exchanger 1 into operation by selecting Heat Exchanger 1 with the SELECT button and turning the heat exchanger on by pressing the ON/OFF button (OFF indicates that the heat exchanger is off and ON indicates that the heat exchanger should be firing).

6.Insert the probe from a combustion analyzer into the hole left by the removal of the flue temperature sensor.

Note: Heat Exchanger 1 is the top heat exchanger; please ensure the probe is in the top flue sensor location.

7.Once the heat exchanger has modulated up to full fire measure the combustion. The values should be in the range listed in Table 3H above. CO levels should be less than 200 ppm for a properly installed unit. If the combustion is not within range reference the chart below for possible causes and corrective actions.

Service Manual

Table 3H Flue Products

Natural Gas

Propane

 

 

 

 

CO2

O2

CO2

O2

8.0% - 10%

3.0% - 6.5%

9.0% - 11%

4.1% - 6.9%

 

 

 

 

8.Once the Heat Exchanger 1 analysis is complete, test the safety shutoff device by turning the manual shutoff valve to the OFF position and ensuring that Heat Exchanger 1 shuts down and registers an alarm. Open the manual shutoff valve, reset the control, and return to Service Mode.

9.Repeat the same procedure for Heat Exchanger 2 by selecting Heat Exchanger 2 while on the Service Mode Screen. Be certain to insert the probe from the combustion analyzer into the Heat Exchanger 2 flue temperature sensor location.

10.Turn the main power off to the boiler and replace the flue temperature sensor into the flue pipe connection.

11.Place the boiler back into normal operation.

WARNING You must replace the flue gas temperature sensor to prevent flue gas spillage into

the room. Failure to comply could result in severe personal injury, death, or substantial property damage.

Table 3G Troubleshooting Chart - Combustion Levels

POSSIBLE CAUSE

CORRECTIVE ACTION

•Refer to Section 2 - General Venting of the SYNC Installation and Operation Manual Vent/Air Intake Length for the proper venting and air intake methods for the SYNC boiler.

or Obstruction

•Check for obstructions at the vent/air intake terminals.

Gas Supply Pressure

• Refer to Section 6 - Gas Connections of the SYNC Installation and Operation

 

Manual for the proper gas supply for the SYNC boiler.

 

 

Dirty/Damaged Burner

• Refer to page 39 of this manual for burner removal and cleaning procedures.

• Replace burner if necessary.

 

 

 

Gas Valve Adjustment

• Refer to page 55 of this manual for the gas valve adjustment procedure.

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Contents Models 1.0, 1.3, Contents Handling ceramic fiber materials Niosh stated First AidService MaintenanceTroubleshooting Service Near boiler pipingSync display Control inputs BoardSecondary Smart Touch Control Module Primary Control outputsHow the control module operates General OperationHow the boiler operates Sequence of operationSequence of operation Sequence of operation space heating and HWThis table lists the parameters and where to access them Parameter tableOutdoor Reset Viewable and changeable control parameters Status ScreenService Details Screen Service Main Screen Setup Screen Service/Setup Parameters Screen Service Set Point Parameters Screen Outdoor Reset Parameters Screen Service Night Setback Parameters Screen Cascade Parameters Screen Cascade OperationPumps Parameters Screen 10Vdc BMS Parameters Screen 10Vdc OperationService Cascade Screen Service Temps Screen Burners Screen Graph Select Screen History Screen Service Mode Screen Maintenance Maintenance and annual startup Inspect boiler area Address reported problemsClean condensate trap Inspect boiler interiorFlue vent system and air piping Check water systemCheck expansion tank Check boiler relief valve Check control settings Check ignition ground wiringCheck all boiler wiring Inspect ignition and flame sense electrodesCheck flame signal Cleaning boiler heat exchangerReview with owner Test procedure Test low water flow conditionsTroubleshooting Alarm ScreenBefore troubleshooting Check the followingCheck control module fuses Operation No DisplayNo Burner Unit DoesChecking temperature sensors Temperature ResistanceOperation Boiler Pump NoisyNo Pump System PumpDrain Blocked Flow SwitchCondensate Flame outLight cont’d Flame LostWhile Running Troubleshooting Temp SW Automatic ResetHigh Limit / HEX Blower RPM’sSensor Open Louver Proving SwitchToo High Sensor ShortedLow Resets Try LaterAir Flow Too Flap ValveWriting to Internal FaultNo Error Stored MemosOr Obstruction Combustion Analysis ProcedureGas Valve Adjustment Gas Supply PressureGas valve adjustment procedure ModelModels 1.3
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1 specifications

Lochinvar 1 is a remarkable achievement in the realm of modern technology and engineering. As a powerful and efficient water heater, it has been designed to cater to a wide range of residential and commercial needs. One of the standout features of Lochinvar 1 is its advanced heating technology, which incorporates a high-efficiency condensing design. This technology allows the unit to achieve impressive energy savings by maximizing heat transfer while minimizing energy consumption.

The Lochinvar 1 utilizes a stainless steel heat exchanger that enhances durability and corrosion resistance. This not only extends the lifespan of the unit but also ensures consistent performance over time. Coupled with a user-friendly control system, users can easily adjust settings and monitor performance, enhancing overall convenience and usability.

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In conclusion, Lochinvar 1 epitomizes the melding of efficiency, reliability, and user-friendly technology. With its high-performance features, robust safety systems, and adaptable installation options, it stands out as a forefront player in the water heating industry, meeting the diverse needs of today's consumers and businesses alike.
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