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

1 Service (continued)

Viewable and changeable control parameters

CAUTION Before changing parameters, note the settings so that the unit can be returned to

its original operating parameters.

General

User code

The User Code allows the user to access and change a limited number of control parameters. The access code can be changed by the user or the installer to a code of their choosing. The default code is 0704. The code can be changed one digit at a time by using the arrow keys on the display.

Date and time

The control uses an internal clock for the night setback feature and for logging of events. For these features to work correctly, the clock must be set when the unit is first installed or any time the unit has been powered off for more than 30 days. The date and time are displayed as “YY:MM:DD W hh:mm”. YY = year, MM = month, DD = date, W = day (1 = Monday, 2 = Tuesday, etc.), hh = hour (24 hour time; 2:00 PM = 14:00), mm = minutes.

NOTICE

The internal clock does not adjust for

Daylight Savings Time and therefore, will

 

require a manual adjustment.

Software version

 

The software version allows the user to view the software version in use by the control. This software controls the operation of the unit. When a new software version becomes available, the existing control can be replaced with a new control to update the software.

Temperature units

The control can be configured to display temperature in either °C or °F. The default is °F.

SH Night setback offset (boiler only)

Once the internal clock has been set correctly, the SH night setback feature can be used to program a lower setpoint. The value of this parameter will be subtracted from the normal setpoint to determine the setpoint used during night setback. The temperature range for this parameter is 0°F to 90°F (50°C). The feature is turned off with a setting of 0°F. The default value is 0°F.

SH Night setback times (boiler only)

If the SH Night Setback parameter is set to anything other than 0°F, the night setback feature becomes active. This will require start and stop times to be programmed for the days that reduced temperatures are required. Each day of the week (Monday through Sunday) will have an on and off time.

Example: Monday ON: 22:30, Tuesday OFF: 6:45. If you wish to skip a day and have no night setback, set the on and off times to the same time, and prior to 12:00 p.m. To keep night setback active through the entire day, set the on and off time to the same time, and after 12:00 p.m. The default times for each day will be 08:00 (OFF) and 18:00 (ON).

DHW Night setback offset

Once the internal clock has been set correctly, the DHW night setback feature can be used to program a lower SH setpoint during various times of the week. The value of this parameter will be subtracted from the normal setpoint to determine the setpoint used during night setback. The temperature range for this parameter is 0°F to 90°F (50°C). The default value is 0°F.

DHW Night setback times

If the DHW Night Setback parameter is set to anything other than 0°F, the DHW night setback feature becomes active. This will require start and stop times to be programmed for the days that reduced temperatures are required. Each day of the week (Monday through Sunday) will have an on and off time. If you wish to skip a day, set the on and off times to the same time, and prior to 12:00 p.m. To keep night setback active through the entire day, set the on and off times to the same time and after 12:00 p.m.

Temperature settings

SH Setpoint (boiler only)

The SH setpoint user sets the water temperature setpoint for fixed operation, or the maximum temperature setpoint when the outdoor air sensor is used. The temperature range of this parameter is 60°F (15°C) to 230°F (110°C). The default value is 80°F (27°C).

SH Minimum setpoint (boiler only)

The SH minimum setpoint sets the minimum water temperature setpoint that can be used for space heating operation. The user or installer will not be able to program the control with a lower SH setpoint. The temperature range of this parameter is 32°F (0°C) to 230°F (110°C). The default value is 70°F (21°C).

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Lochinvar 402, 2072 service manual Viewable and changeable control parameters, Temperature settings
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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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