Service Manual

3 Troubleshooting (continued)

Table 3-4(continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Boiler Interface

FAULT

DESCRIPTION

 

CORRECTIVE ACTION

 

 

 

 

 

 

• Verify that the boiler pump is set to the proper speed

Outlet Temp

 

or that the boiler pump is the proper size. Reference

 

Section

6 - Hydronic Piping of the Knight

Boiler

High

Outlet water temperature has exceeded the

Installation and Operation Manual for boiler pump

(continued)

maximum outlet water temperature.

specifications.

 

 

 

 

• Replace the main control board.

 

 

 

 

 

 

 

 

 

• Check set point of the external control.

 

 

 

 

• Check the wiring between the external control and the

Rem Ctrl Flt

External control is cycling too often.

unit.

 

 

 

 

 

 

 

 

 

 

• Replace the control.

 

 

 

 

 

 

 

 

Parameters

 

 

 

 

 

Progr

 

 

 

 

 

(will require a manual

 

 

 

 

 

reset once the condition

After downloading parameters from a laptop,

• Press the ENTER/RESET button on the SMART

has been corrected. Press

the main control board must be reset.

SYSTEM display panel.

 

 

the RESET button on the

 

 

 

 

SMART SYSTEM display

 

 

 

 

 

to reset.)

 

 

 

 

 

 

 

 

 

While the unit is in Service Mode, the outlet

• Establish a heating load to remove the heat from the

 

temperature has exceeded 185°F.

boiler loop.

 

 

 

 

• Verify that the system is full of water and that all air

 

 

has been properly purged from the system.

 

 

 

• Verify that the boiler is piped properly into the heating

 

 

system. Refer to Section 6 - Hydronic Piping of the

 

 

Knight

Boiler Installation and

Operation

Service Blk

 

Manual for the proper piping methods for the Knight

 

boiler.

 

 

 

 

 

• Check 120 vac to the boiler pump motor on a call for

 

 

heat. If voltage is not present, check the wiring back

 

 

to the main control board. Replace the main control

 

 

board if necessary.

 

 

 

 

• If 120 vac is present on a call for heat and the boiler

 

 

pump is not operating, replace the pump.

 

 

 

 

• Verify that the boiler pump is set to the proper speed

 

 

or that the boiler pump is the proper size. Reference

 

 

Section

6 - Hydronic Piping of

the

Knight

 

 

Boiler Installation and Operation Manual for boiler

 

 

pump specifications.

 

 

 

 

 

 

 

 

45

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Image 45
Lochinvar 81-286 service manual Rem Ctrl Flt, Parameters Progr, Service Blk
Page 44 Page 46

81-286 specifications

Lochinvar 81-286 is a highly efficient and innovative heating solution that represents the latest advancements in boiler technology. This model, part of Lochinvar's prestigious line-up, is designed for commercial applications, delivering superior performance while emphasizing energy efficiency and user-friendly operation.

One of the standout features of the Lochinvar 81-286 is its robust construction. Built with high-quality materials, the unit is engineered for durability and reliability, ensuring long-term operation with minimal maintenance. Its compact design allows for versatility in installation, making it suitable for various building layouts and configurations.

The boiler's primary technology is its advanced condensing capability, which optimizes heat transfer and reduces energy consumption. By efficiently using the heat generated during combustion, the 81-286 can achieve higher thermal efficiencies, often surpassing traditional systems. This results in lower operating costs and reduced greenhouse gas emissions, aligning with the growing demand for sustainable energy solutions in commercial buildings.

Lochinvar incorporates intelligent control systems into the 81-286, featuring user-friendly interfaces that facilitate straightforward programming and monitoring. These control systems enable precise regulation of temperature and pressure, ensuring optimal operation while providing real-time feedback that aids in troubleshooting and maintenance. Users can enjoy the convenience of remote monitoring, enhancing the overall user experience.

Another key characteristic of the Lochinvar 81-286 is its capacity range. The model is available in various sizes, allowing it to meet the specific demands of different facilities, from small businesses to large industrial applications. This flexibility makes it a top choice for contractors and engineers seeking reliable heating solutions that cater to diverse needs.

In addition, the Lochinvar 81-286 boasts exceptional safety features, including built-in safeguards that protect against overheating and pressure surges. These aspects ensure that the unit operates within safe parameters, providing peace of mind for facility managers and operators.

In summary, the Lochinvar 81-286 combines durability, efficiency, and advanced technology, making it an ideal solution for commercial heating needs. With its innovative condensing design, intelligent controls, and safety features, this boiler stands out as a reliable choice for those seeking sustainable and effective heating solutions. Its versatility and performance make it a key player in today’s ever-evolving energy landscape.
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