Lochinvar 801, 400 Noisy, No Pump, Boiler Pump, System Pump, DHW Pump, Relief Valve, Opening

Page 36

 

 

 

 

Service Manual

 

 

 

 

 

3 Troubleshooting

 

 

 

 

 

 

 

 

 

 

 

 

Table 3-3Troubleshooting Chart - Noisy System

 

 

 

 

 

 

 

FAULT

CAUSE

 

CORRECTIVE ACTION

 

 

 

 

 

- Supply gas problem. Natural gas

• Refer to Section 7 - Gas Connections of the Knight

 

pressures should be between 4 inches

XL Installation and Operation Manual for detailed

 

w.c. and 14 inches w.c. LP gas pressures

information concerning the gas supply.

 

should be between 8 inches w.c. and 14

 

 

 

inches w.c.

 

 

 

- Gas/air mixture problem.

• Refer

to the Gas Valve Adjustment Procedure on

 

 

 

page 47 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 XL Installation and Operation Manual.

 

 

 

 

Noisy

- Dirty/damaged burner.

• Refer to page 31 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 XL 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 F1 on the control board, see page 33 of

Operation -

 

 

this manual.

Boiler Pump

 

 

Note:

Make sure pump amperage does not exceed

System Pump

 

 

or

 

 

1.8 amps.

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.

 

 

 

 

 

36

Page 35 Page 37
Image 36
Page 35 Page 37
Contents Models 400 Contents Please read before proceeding Handling ceramic fiber materialsNiosh stated First Aid When servicing boiler What is in this manual? ServiceMaintenance TroubleshootingService Near boiler pipingKnight XL display Navigation DialControl inputs LOW Voltage Connection BoardSmart Control Module Control outputsAccess modes General OperationHow the boiler operates How the control module operatesOperation Display From previous page Sequence of Operation Display panel menu access Button Screen Operation Display StatusDisplay panel parameter access Button Screen Status Operation DisplayDescription See User Access Installer Access Display Modify Parameter tableMenu DHW Settings Resetoutdoor See User Access Installer Access Display Modify DescriptionBMS Service Notification Temperature units C / F Viewable and changeable control parametersTime and Date Software VersionTemperature Settings Data LoggingFunctions DHW Settings Outdoor Reset Anti-Cycling Ramp Settings Control modesControlling Sensor BMS Thermostat InputCascade Offset Minimum On/Off TimeCirculation pumps Service Notification Maintenance Maintenance and annual startup Service technicianOwner maintenance Maintenance Flue vent system and air piping Check water systemCheck expansion tank Check boiler relief valveCheck ignition ground wiring Check all boiler wiringCheck control settings Inspect ignition and flame sense electrodesCheck flame signal Cleaning boiler heat exchangerReview with owner Model Kit Part Component Number DescriptionTroubleshooting Before troubleshootingCheck control module fuses Check the followingNo Display No BurnerOperation Unit DoesChecking temperature sensors Temperature Resistance Temperature ResistanceWire Color R/BK and Y Wire Color G and Y Resistance TemperatureNoisy No PumpBoiler Pump System PumpTroubleshooting Temp Sw OpenAnti-cycling Flame Fail IgnCont’d Flame SequenceOutlet Arhl Outlet MrhlFan Low/High Fan Speed LowHigh GV/RelayFault Sensor ShortedLouver Proving Inlet SensorFlue Sensor Fault Fatal ErrorMemory Error Flue Temp DiffFlue Temp High Delta T HighOutlet Temp Service Blk Watch Dog ErrorNo Error Stored Rem Ctrl FltCombustion Analysis Procedure Gas valve adjustment procedure ModelModels 601
Related manuals
Manual 16 pages 54.19 Kb Manual 80 pages 32.08 Kb

400, 801 specifications

The Lochinvar 801,400 is a cutting-edge solution in the realm of high-efficiency commercial water heating. This model represents a significant advancement in the design and functionality of water heaters, catering primarily to the demands of large-scale facilities like hotels, hospitals, and large industrial operations.

One of the standout features of the Lochinvar 801,400 is its impressive heating capacity, which can produce up to 801,400 BTUs, making it suitable for high-demand applications. This output is crucial for establishments that require a consistent supply of hot water, such as commercial kitchens and laundry facilities. The robust design ensures that it can handle peak demand periods without compromising performance.

Another significant aspect is the innovative use of advanced technology in its operation. The Lochinvar 801,400 integrates smart controls that enhance its efficiency and ease of operation. These controls allow for precise monitoring and adjustment of water temperatures, ensuring that the system operates within optimal parameters while maximizing energy savings. The intelligent monitoring system can provide real-time updates, making it easier for facility managers to keep track of performance and address maintenance needs proactively.

The construction of the Lochinvar 801,400 incorporates durable materials that not only enhance the longevity of the unit but also offer resistance to corrosion and wear. This durability translates into lower maintenance costs and an extended lifespan for the unit, making it a worthwhile investment for businesses.

Moreover, the Lochinvar 801,400 is designed with energy efficiency in mind. It boasts a high thermal efficiency rating, which reduces operational costs and minimizes the carbon footprint of heating operations. This efficiency is critical in today’s environmentally conscious market, where businesses are seeking to reduce their energy consumption and comply with strict regulations.

The design of the Lochinvar 801,400 also prioritizes safety, featuring innovative safety controls and fail-safes that protect both the unit and the users.

In summary, the Lochinvar 801,400 offers a combination of high capacity, advanced technology, durability, and energy efficiency, making it an excellent choice for commercial water heating solutions. As industries continue to evolve, the demand for reliable and efficient water heating solutions like the Lochinvar 801,400 will only increase.
Top Page Image Contents