Lochinvar 50-210 Noisy, No Pump, Boiler Pump System Pump, DHW Pump, Relief Valve, Opening

Page 31

Service Manual

3Troubleshooting (continued)

Table 3E Troubleshooting Chart - Noisy System

FAULT

 

CAUSE

CORRECTIVE ACTION

 

 

 

 

 

- Supply gas problem. Natural gas pressures

• Refer to Section 7 - Gas Connections of the Knight

 

should be between 4 inches w.c. and

Wall Mount Installation and Operation Manual for

 

14 inches w.c.

LP gas pressures should

detailed information concerning the gas supply.

 

 

be between

8 inches w.c. and

 

 

 

14 inches w.c.

 

 

 

 

 

 

 

 

- Gas/air mixture problem.

• Refer to the Gas Valve Adjustment Procedure

on

 

 

 

page 41 of this manual for the proper gas valve setting.

 

 

 

Verify that the vent/air intake lengths do not exceed the

 

 

 

maximum listed in the General Venting section of the

 

 

 

Knight Wall Mount Installation and Operation Manual.

Noisy

 

 

- Dirty/damaged burner.

• Refer to page 26 in this manual for the burner removal

Operation

 

 

and inspection procedure. Clean or replace the burner

 

 

 

as necessary.

 

 

 

 

 

 

- Low water flow through the heat exchanger.

• Refer to Section 6 - Hydronic Piping of

the

 

 

 

Knight Wall Mount Installation and Operation Manual for

 

 

 

minimum flow rates. Verify that the boiler is piped in a

 

 

 

primary/secondary fashion and that the boiler and

 

 

 

system pump are running on a call for heat.

 

 

 

 

 

 

- Air in the piping system.

• Properly purge all air from the piping system.

 

 

 

 

 

 

- Low system water pressure.

• Verify system pressure is a minimum of 12 psi.

 

 

 

 

 

No Pump

- Blown fuse.

 

• Replace fuse F5 on the control board, see page 28 of

Operation -

 

 

this manual.

 

Boiler Pump

 

 

Note: Make sure pump amperage does not exceed

System Pump

 

 

 

 

1.8 amps.

 

or

 

 

 

 

 

 

 

DHW Pump

- Faulty pump.

 

• Replace pump.

 

 

 

 

 

 

 

 

 

- Internal fault on control board.

• Replace main control board.

 

 

 

 

 

 

 

 

 

- System pressure exceeds relief valve

• Lower the system pressure below the 30 psi rating of

Relief Valve

setting.

 

the supplied relief valve or replace the standard relief

 

 

valve with a higher rated valve up to the maximum

Opening

 

 

pressure of the heat exchanger.

 

 

 

 

• Improperly sized expansion tank.

 

 

 

 

 

 

31

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Contents Models 50 Contents Handling ceramic fiber materials Please read before proceedingNiosh stated First Aid When servicing boiler Troubleshooting What is in this manual?Service MaintenanceNear boiler piping ServiceKnight wall mount display Control inputs Smart Control ModuleControl outputs Sequence of operation General OperationHow the boiler operates How the control module operatesOUT 123.8F129 Sequence of operationBLR SH 41% Rate Display panel menu access Display panel parameter access Parameter table Temperature DataControl Circulation Service Viewable and changeable control parameters Temperature settingsFunctions DHW settingsOutdoor air reset Data loggingOutdoor air shutdown Shift reset curveMaximum SH set point Minimum SH set pointAnti-cycling Boiler cascade address Control modesSH controlling sensor SH sourceCascade offset Service NotificationCirculation pumps Service technician Maintenance Maintenance and annual startupOwner maintenance Maintenance Check boiler relief valve Flue vent system and air pipingCheck water system Check expansion tankInspect ignition and flame sense electrodes Check ignition ground wiringCheck all boiler wiring Check control settingsOiled bearing circulators Check flame signalCleaning boiler heat exchanger Review with ownerCheck the following TroubleshootingBefore troubleshooting Check control module fusesUnit Does Not No DisplayNo Burner OperationTemperature Resistance Checking temperature sensorsDHW Pump NoisyNo Pump Boiler Pump System PumpSequence Switch/LWCOFlow FlameNo Flame Ign Anti-cyclingRunning No FlameFan Speed Low Auto ResetHigh Limit Fan LowSensor Shorted Fan HighFan Speed High Sensor OpenTemp O/Shoot Parameters Progr Rem Ctrl FltOpen Low 24 vac Service BlkWatch Dog Error No Error StoredGas Supply Pressure Combustion Analysis ProcedureGas Valve Adjustment Or Obstruction2Gas Valve Adjustment Gas valve adjustment procedurePage

50-210 specifications

The Lochinvar 50-210 is a powerful and efficient boiler designed for residential and commercial heating applications. This model is a part of Lochinvar’s line of advanced heating solutions, known for their reliability, efficiency, and innovative technologies. The 50-210 offers a high thermal efficiency rating, ensuring that energy consumption is minimized while still providing excellent heating performance.

One of the standout features of the Lochinvar 50-210 boiler is its advanced control system. It is equipped with a user-friendly LCD display that allows easy access to system settings and real-time performance data. This technology enhances user experience, allowing for easy adjustments and monitoring, ensuring optimal performance based on specific heating needs.

The Lochinvar 50-210 is designed with a fully modulating burner, which means it can adjust its output to match the heating demand effectively. This feature not only provides superior comfort but also increases energy savings by preventing the boiler from running at full capacity when it's not necessary. Moreover, the modulating burner minimizes wear and tear, extending the lifespan of the unit.

In terms of safety, the Lochinvar 50-210 incorporates several features such as multiple temperature and pressure sensors, flame safeguard systems, and safety cut-off controls. These safeguard mechanisms ensure that the system operates safely and efficiently, providing peace of mind to users.

The construction of the Lochinvar 50-210 is robust, featuring high-grade stainless steel and a durable heat exchanger. This design helps resist corrosion, ensuring longevity and requiring minimal maintenance over the years. Additionally, its compact design allows for easier installation, making it suitable for various settings, even those with limited space.

Furthermore, the Lochinvar 50-210 operates quietly, which adds to its appeal for residential installations. Its environmental considerations are also noteworthy, with low emissions contributing to cleaner air quality.

Overall, the Lochinvar 50-210 is a sophisticated heating solution that blends efficiency, reliability, and advanced technology. With its user-friendly controls, modulating burner, safety features, and durable construction, it meets the heating demands of modern homes and commercial spaces, making it a top choice for those seeking dependable boiler performance.
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