Pool Boiler: Difference between revisions
→Stage A: Demand for Heat
Matt Parnell (talk | contribs) |
Matt Parnell (talk | contribs) |
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A demand for heat is satisfied when all of the following conditions are met: | A demand for heat is satisfied when all of the following conditions are met: | ||
# The measured temperature (via the temperature controller) has reached or fallen below the heat threshold. | # The measured temperature (via the [[Pool_Boiler_Temperature_Controller|temperature controller]]) has reached or fallen below the heat threshold. | ||
# The normally closed (NC) <b>Boiler Disable</b> relay contact (part of the pool automation system) is closed, indicating that no fault is observed. | # The normally closed (NC) <b>Boiler Disable</b> relay contact (part of the pool automation system) is closed, indicating that no fault is observed. | ||
# The <b>Low Operator</b> relay contact (in the Johnson Controls C450CCN-3 module) is closed, indicating that the over-temperature bound has not been met. | # The <b>Low Operator</b> relay contact (in the Johnson Controls C450CCN-3 module) is closed, indicating that the over-temperature bound has not been met. | ||