Installation & Operation Manual
11 Operating information
Status Display Screens (cont’d)
Operation of the cascade
The boiler designated as the Leader will have two additional display screens that can be viewed. These screens will provide information regarding the operation of the Cascade. Each screen will contain two viewable items. The following is a description of the individual items and what they can display:
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| Display shows: | Description |
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| Cas: Off | The Leader control has been turned off by the Enter/Reset button on |
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| the Smart System display. | |
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| Cas: Standby | The Leader boiler has not received a call for heat from a remote |
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| thermostat. | |
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| Cas: 127.4F (130) | The Cascade is now active. The system supply temperature will be |
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| displayed. The Cascade set point will be displayed in parenthesis. | |
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| Cas: Setpoint Met | The Cascade has met the water temperature set point, but is still |
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| receiving a call for heat from a remote thermostat. | |
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| Cas: No Members | The Leader control could not detect any Member controls to |
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| participate in the Cascade. | |
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| Cas: S6 Not Present | The system supply sensor is not connected to the Leader boiler. |
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| PMP: Off | The Leader control has not received a call for heat from a remote |
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| thermostat and has not powered the system pump. | |
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| PMP: On | The Leader control has received a call for heat from a remote |
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| thermostat and has powered the system pump. | |
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| PMP: Delay | The system call for heat has been satisfied and the system pump is |
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| running for a fixed time to remove any residual heat. | |
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| Press the Next arrow key on the SMART SYSTEM display to access Screen #10. | ||
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#10
| The first percentage shows the firing rate that is being sent to the last | |
Cas Pow: ***% ***% | boiler called on. The second percentage shows the total power | |
| available to the Cascade. | |
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| Shows the number of boilers connected to the Cascade. The Leader is | |
| designated as 0. Members will be designated 1 - 7. If a | |
Present: 01234567 | place of a number, that boiler is either not connected, or in a lockout | |
mode and not available for the Cascade. If a “d” is used in place of a | ||
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Example: | number, that boiler is handling a DHW demand and is not available | |
for the Cascade. If the number is flashing, then that boiler is providing | ||
Present: | ||
heat to the Cascade. As the lead boiler is changed from day to day, that | ||
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| boiler’s address will be shown first in the string of numbers. In the | |
| example, boilers 0 - 3 are present, boiler 2 is the lead boiler, and boiler | |
| 0 is heating an indirect DHW tank. |
Press the Next arrow key on the SMART SYSTEM display to roll back to Screen #1. At any point if you wish to access an earlier screen, press the Previous arrow key on the SMART SYSTEM display.
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