User Settings & Control System Menus
Temperatures
Operating Set Point And Differential Adjustment
The Operating Set Point is adjustable from 90°F (42°C) to 180°F (82°C) for commercial and 160°F (71°C) on residential models. The factory setting is 120°F (49°C). The Differential is adjustable from 2° to 20°. The factory setting is 8°. These user settings are accessed from the Temperatures menu. These instructions explain how to adjust these settings and navigate the control system.
When the water temperature sensed by the control system from the Temperature Probe reaches the Operating Set Point the control system will end the heating cycle. A heating cycle will be activated again when the sensed water temperature drops below the Operating Set Point minus the Differential setting.
Note: Set the Operating Set Point to the lowest setting which produces an acceptable hot water supply for most efficient use. Lower Differential settings may cause excessive heating cycles
Description/Action | Display |
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From the Desktop screen, press the Operational Button under |
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MANUFACTURER / MODEL INFORMATION |
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MENU. The "Main Menu" screen will be displayed. |
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| Tank Temperature | 120°F | |
| Operating Set Point | 120°F | |
| Status: Standby |
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| MENU |
| HELP | ||||
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The Main Menu is where all control system menus are listed, |
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| Main Menu |
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see Table 11 for a complete list and description of control |
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system menus. Use the Up and Down Buttons to view all |
| Temperatures |
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control system menus from the Main Menu. |
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| Heater Status |
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With Temperatures menu selected (highlighted in black) in |
| Display Settings |
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the Main Menu screen, press the Operational Button under |
| Heater Information |
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“SELECT” to enter the Temperatures menu. |
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If the Temperatures menu is not selected use the Up and Down |
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Buttons to select this menu item. |
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| SELECT |
| BACK | HELP |
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With the Operating Set Point selected in the Temperatures | Temperatures |
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menu, press the Operational Button underneath “CHANGE” to |
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Operating Set Point |
| 120°F | ||
activate the adjustment mode for this menu item. |
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If Operating Set Point is not selected use the Up and Down | Differential |
| 8°F | |
Tank Temperature |
| 120°F | ||
Buttons to select this menu item. | Tank Probe Offset |
| 0°F | |
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Note: Higher Temperature settings increase wear and |
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operating costs. Set the Operating Set Point to the lowest |
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setting which produces an acceptable hot water supply. This |
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will always provide the most energy efficient operation and | CHANGE | BACK | HELP | |
longer life. | ||||
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With the adjustment mode for the Operating Set Point activated | Temperatures |
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the selection bar will change from a black fill to a black outline. |
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Operating Set Point |
| 140°F | ||
Use the Up and Down Buttons to change the current setting. |
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Differential |
| 8°F | ||
Press the Operational Button under "UPDATE" to save the | Tank Temperature |
| 120°F | |
Tank Probe Offset |
| 0°F | ||
new setting. Press the Operational Button under "CANCEL" to |
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discard changes and return to the previously saved setting. |
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Note: Use this same procedure to change the Differential |
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setting and other adjustable user settings in the control system | UPDATE |
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menus. |
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