Viewable and changeable control parameters

User’s Information Manual

3SMART SYSTEM control module (continued)

Viewable and changeable control parameters

CAUTION	Before changing parameters, note the
CAUTION	settings so that the unit can be returned
	to its original operating parameters.

A: General

Heater model

The control will display “LOCHINVAR” as the model number because the same control is used on several models. This will be displayed when parameter A1 has been accessed. This parameter is not changeable.

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. To change the code, parameter A2 must be accessed. 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. To set the clock, parameter A3 must be accessed. 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
	NOTICE	Daylight Savings Time and therefore,
		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. This parameter can be changed by the user or the installer by accessing parameter A5. The default is °F.

Night setback temperature

Once the internal clock has been set correctly, the night setback feature can be used to program a lower water temperature set point for space heating or tank. This parameter can be changed by the user or the installer by accessing parameter A6. The temperature range for this parameter is 32°F (0°C) to 140°F (60°C). The feature is turned off with a setting of 32.0°F (0°C). The default value is 32.0°F (0°C).

Night setback times

If parameter B6 is set to anything other than 32.0°F (0°C), the night setback feature becomes active. This will require start and stop times to be programmed for the days that reduced temperatures are required. These times can be changed by the user or the installer by accessing parameter A7. 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, leave the on and off times the same. The default times for each day will be 08:00 (OFF) and 18:00 (ON).

B: Temperature settings (boiler only)

SH Set point user

The SH set point user sets the water temperature set point for fixed operation or the maximum temperature set point when the outdoor air sensor is used. This parameter can be changed by the user or the installer by accessing parameter B1. The temperature range of this parameter is 60°F (15°C) to 230°F (110°C). The default value is 120°F (49°C).

C: Data logging

Hours running SH

The hours running SH parameter shows the total number of hours the unit has been in the SH firing position. This parameter can be viewed by the user and the installer by accessing parameter C1.

Hours running DHW

The hours running DHW parameter shows the total number of hours the unit has been in the DHW firing position. This parameter can be viewed by the user and the installer by accessing parameter C2.

Ignition attempts

The ignition attempts parameter shows the total number of times the unit has attempted to fire. This parameter can be viewed by the user and the installer by accessing parameter C3.

Show last 10 errors

The control will log the 10 most current errors with the date and time the error occurred. This parameter can be viewed by the user and the installer by accessing parameter C4.

1501, 1002, 1302, 1701, 2001 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.

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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.

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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.