Lochinvar 2072 Noisy, No Pump, Operation Boiler Pump System Pump, DHW Pump, Relief Valve, Opening

Page 36

Copper-fin II/IIE Boiler and Water Heater Service Manual

3 Troubleshooting

Table 3D Troubleshooting Chart - Noisy System

FAULT

CAUSE

 

CORRECTIVE ACTION

 

 

 

 

 

 

 

 

 

 

- Gas supply problem.

• Refer

to the

Gas

Connections

Section

of the

 

 

Installation and Operation Manual for detailed

 

 

information concerning the gas supply.

 

 

 

 

 

 

- Gas/air mixture problem.

• Refer to the Checking Manifold Gas Pressure and

 

 

Combustion Analysis Procedure on pages 29 and 30 of

 

 

this

manual

for

the proper

settings.

Verify

 

 

that the vent/air intake lengths do not exceed the

 

 

maximum listed in the Venting section of the

 

 

Installation and Operation Manual.

 

 

 

 

 

 

- Dirty/damaged burner(s).

• Refer to pages 28 and 29 in this manual for the burner

Noisy

 

removal and inspection procedure. Clean or replace the

Operation

 

burner as necessary.

 

 

 

-Low water flow through the heat exchanger. • Refer to the Water Connections Section of the

Installation and Operation Manual for minimum flow rates. Verify that the appliance is piped in a primary/secondary fashion and that the appliance 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.

 

 

 

 

 

- Faulty pump relay.

• Replace relay.

 

No Pump

 

 

 

- Faulty pump.

• Replace pump.

 

Operation -

 

Boiler Pump

 

 

 

 

 

 

System Pump

- Internal fault on control board.

• Check fuse F5.

 

or

 

• Replace main control board.

 

DHW Pump

 

 

 

 

Note: Make sure the boiler pump horse power (hp) does

 

 

not exceed 1 hp.

 

 

 

 

 

 

- System pressure exceeds relief valve

• Lower the system pressure below

the rating of

 

setting.

the supplied relief valve or replace the standard relief

 

 

valve with a higher rated valve up to the maximum

 

 

pressure of the heat exchanger.

 

Relief Valve

 

 

 

- Improperly sized expansion tank.

• Install properly sized expansion tank.

 

Opening

 

 

 

- Outlet water temperature in excess of 210°.

• Check setpoint of temperature control.

 

 

 

 

 

 

 

 

• Check temperature rise across heat exchanger. Refer to

 

 

the temperature rise chart in

the Water

 

 

Connections Section of the Installation and Operation

 

 

Manual.

 

36

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Contents Copper-fin II/IIE Boiler and Water Heater Models 402 Contents Please read before proceeding Handling ceramic fiber materialsNiosh stated First Aid What is in this manual? ServiceMaintenance TroubleshootingService Copper-fin displayControl inputs Control outputs General Operation How the appliance operatesHow the control module operates Sequence of operationSequence of operation OUT 123.8F129HTR Postpurge Display panel menu access Display panel parameter access Parameter table a Boiler Operation OnlyAnti-cycle Time Anti Cycl Tm Parameter table B Water Heater Operation BMS Service Notification Pumps Temperature settings Viewable and changeable control parametersData logging FunctionsDHW settings Outdoor air reset boiler only Anti-cycling Control modes Building Management System BMS CascadeService Notification Circulation pumpsMaintenance Maintenance and annual startup Service technicianOwner maintenance See the User’s Information Manual for instructionsMaintenance Check relief valve Inspect/replace hot surface ignitersInspect/replace hot surface igniter Check all wiring Check control settingsInspect and clean burner Perform start-up and checks2Adjusting air shutter 399,999 750,000 Btu/ hr Models Adjusting combustion air pressure Checking manifold gas pressurePressure Regulator Chamber Adjustment Manifold Inspect and clean the heat exchanger Review with ownerOiled bearing circulators Troubleshooting Before troubleshootingCheck control module fuses Check the followingNo Display No BurnerOperation Unit DoesChecking temperature sensors Resistance TemperatureTemperature Resistance Noisy No PumpOperation Boiler Pump System Pump DHW PumpFlow Switch Flame SequenceAnti-cycling Error No Flame IgnHSI Current Low Flame CKTAuto Reset No FlameRunning High LimitManual Reset Inlet LowSensor Open Sensor ShortedLouver Proving Tank OpenAPS Open APS ClosedTemp O/Shoot Rem Ctrl FltParameters Progr Service Blk Watch Dog ErrorNo Error Stored Low Voltage
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402, 2072 specifications

Lochinvar 2072,502 is an innovative and robust water-heating solution tailored for residential and commercial applications. This model represents a significant advancement in energy efficiency and performance, catering to the dynamic heating requirements of modern buildings.

One of the standout features of Lochinvar 2072,502 is its advanced thermal efficiency. With an impressive AFUE (Annual Fuel Utilization Efficiency) rating, the unit delivers exceptional heat output while minimizing energy consumption. This not only reduces utility bills for homeowners and businesses but also supports sustainability efforts by decreasing carbon footprints.

The Lochinvar 2072,502 incorporates cutting-edge technologies that set it apart in the market. It is equipped with advanced control systems that allow users to precisely manage heating outputs, ensuring optimal comfort while conserving energy. The user-friendly digital display provides real-time data, allowing for efficient monitoring and control.

Another significant characteristic of the Lochinvar 2072,502 is its robust stainless-steel construction. This feature enhances the unit's durability and longevity, ensuring reliable performance even in challenging conditions. The high-quality materials also contribute to maintaining consistent water temperatures, which is essential for both residential and commercial heating needs.

The Lochinvar 2072,502 operates silently, making it ideal for installations in areas where noise is a concern. Its compact design allows for flexible installation options, fitting seamlessly into various spaces, whether it’s a utility room, basement, or outdoor area.

Furthermore, the unit supports multiple venting options, accommodating different building architectures and layouts. This versatility makes it an ideal choice for new builds and retrofitting existing systems.

Maintenance is streamlined with the Lochinvar 2072,502, as it features a self-diagnostics system that simplifies troubleshooting. Regular service check-ups are made easier with accessible components, allowing technicians to perform maintenance tasks efficiently.

In summary, the Lochinvar 2072,502 stands out for its high efficiency, advanced technology, durability, and flexible installation options. It is an ideal choice for those seeking a reliable and technologically advanced water-heating solution that meets the challenges of contemporary heating demands while promoting energy savings and environmental responsibility.
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