Manuals / Lochinvar / Household Appliance / Boiler

Lochinvar 81-286 service manual Temperature Settings, Data Logging, Functions

Models: 81-286

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1 Service

Rotate the NAVIGATION dial to select the trigger you wish to skip and press the NAVIGATION dial. “SK” will appear next to that trigger. You can rotate the NAVIGATION dial again to select another trigger if you wish. If you wish to reinstate a skipped trigger, re-select that trigger and press the NAVIGATION dial again. The “SK” next to that trigger will disappear. Press the HOME key to save these skipped triggers. If you selected any currently active trigger(s), the current Night Setback will be cancelled.

Display Timeout

This is the time in which the display remains illuminated. The range is 10 seconds to 10 minutes. The default is 3 minutes.

Temperature Settings

Space Heating (SH1, SH2, SH3) Set Point

CAUTION

Mixing valves are required for the

 

protection of any low temperature loops.

 

There are three (3) individual user set points for better zone control. These are listed as SH1 Set Point through SH3 Set Point. If multiple set points are calling for heat the highest set point has priority. The range is SH Minimum Set point to SH Maximum Set point. The default is 125°F (52°C).

Space Heating (SH) Minimum Set Point

The SH minimum set point sets the minimum water temperature set point that can be used for space heating operation. The user or installer will not be able to program the control with a lower SH set point. This parameter can only be changed by the installer by accessing Minimum SH Set point parameter. The temperature range of this parameter is 32°F (0°C) to the space heating maximum set point. The default value is 32°F (21°C).

Space Heating (SH) Maximum Set Point

The SH maximum set point sets the maximum water temperature set point that can be used for space heating. The user or installer will not be able to program the control with a higher SH set point. This parameter can only be changed by the installer by accessing Maximum SH Set point parameter. The temperature range of this parameter is the space heating minimum set point to 180°F (82°C). The default value is 180°F (82°C).

SH1 - SH3 Offset Set Point

The SH offset sets how many degrees above set point the temperature has to go before the boiler will shut off. This parameter can only be changed by the installer by accessing parameters SH1, 2 and 3 Offset Set point parameters. The temperature range of these parameters is 0°F to 20°F. The default value is 10°F.

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Service Manual

SH1 - SH3 Differential Set Point

The SH differential sets how many degrees below the offset the temperature has to drop before the boiler turns back on. This parameter can only be changed by the installer by accessing the SH1, 2 and 3 Differential Set point parameters. The range is 0°F to 60°F. The default is 20°F.

Data Logging

Reset log errors

The reset log errors function clears the last 10 errors log.

Functions

Service Mode Delay

By pressing the pin button on the front of the display for five (5) seconds, the control will be placed in Service Mode. This will override all other heat demands. The Service Mode allows the installer to set the unit to any firing rate for the purpose of combustion analysis. The delay sets the length of time the boiler will stay in the Service Mode if no keys have been pressed before going back to its original state. This parameter can only be changed by the installer by accessing the Service Mode Delay parameter. The time range of this parameter is 1 to 10 minutes. The default value is 10 minutes.

Freeze Protection Pump On

The SMART SYSTEM control will turn on the boiler and system pump outputs whenever the inlet temperature drops below this setting. This is done to prevent the water in the heat exchanger from freezing. Certain low-temperature applications (such as snow melt) can operate at temperatures around freezing, so this setting needs to be lowered in these cases. The installer can adjust the temperature at which the pump outputs are turned on by accessing Freeze Protection Pump On parameter. The minimum setting is -3°F (-19°C), and the maximum setting is 45°F (7.2°C). The default setting is 45°F (7.2°C).

Never put the Freeze Protection Pump NOTICE on a setting lower than the Freeze

Protection Burner On setting.

Freeze Protection Burner On

If running the pumps does not prevent the inlet temperature from falling closer to freezing, the SMART SYSTEM control will fire the burner at low fire. The installer can adjust the temperature at which the burner fires by adjusting the Freeze Protection Burner On parameter. The minimum setting is -3°F (-19°C), and the maximum setting is 45°F (7.2°C). The default setting is 37°F (2.8°C).

Never put the Freeze Protection Pump NOTICE on a setting lower than the Freeze

Protection Burner On setting.

Freeze Protection Burner Differential

Once the burner has started firing due to a low inlet temperature, the inlet temperature must increase by this amount before the burner turns back off. The installer can adjust this differential by accessing the Freeze Protection Burner Differential parameter. The minimum setting is 0°F, and the maximum is 20°F. The default setting is 5°F (2.8°C).

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Lochinvar 81-286 service manual Temperature Settings, Data Logging, Functions
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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.