Pool Boiler Temperature Controller: Difference between revisions
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This controller does not manage the pool temperature. That functionality is handled by the [[Pool Temperature Controller]]. | This controller does not manage the pool temperature. That functionality is handled by the [[Pool Temperature Controller]]. | ||
In the system, a circulation pump (shown in the <b>Boiler Loop</b> section on page 2 of the [[Process Flow Diagram]]) force returns some amount of hot water from the boiler outlet to the inlet. This helps to maintain an elevated operating temperature (i.e.. 120 °F or greater), reducing the risk of condensation forming on the heat exchanger that can cause damage over time. Unfortunately, various factors may prevent the circulation pump from maintaining the proper temperature such as improper valve settings, trapped air, or pump failure. Air may be regularly introduced into the system while [[Cleaning the Strainer Basket|cleaning the strainer basket]] or [[Backwashing|backwashing the filters]] may cause the pump to operate improperly. The boiler temperature controller in place prior to 2022, a Johnson Controls C450CCN-3, did not detect low-temperature operation. | In the system, a circulation pump (shown in the <b>Boiler Loop</b> section on page 2 of the [[Process Flow Diagram]]) force-returns some amount of hot water from the boiler outlet to the inlet. This helps to maintain an elevated operating temperature (i.e.. 120 °F or greater), reducing the risk of condensation forming on the heat exchanger that can cause damage over time. Unfortunately, various factors may prevent the circulation pump from maintaining the proper temperature such as improper valve settings, trapped air, or pump failure. Air may be regularly introduced into the system while [[Cleaning the Strainer Basket|cleaning the strainer basket]] or [[Backwashing|backwashing the filters]] may cause the pump to operate improperly. The boiler temperature controller in place prior to 2022, a Johnson Controls C450CCN-3, did not detect low-temperature operation. | ||
The controller cannot resolve fault conditions. Instead, it notifies the operator of a fault condition, which usually requires manual intervention. | The controller cannot resolve fault conditions. Instead, it notifies the operator of a fault condition, which usually requires manual intervention. | ||
The design has the following key principles: | |||
* The controller functionality shall help improve boiler function and longevity without adding unnecessary complexity. | |||
* The core function (temperature control) shall be performed by a proven, durable controller. In this case, a Euroterm 3504 was chosen due to its enhanced logic control capabilities. | |||
* The [[Pool_Systems_Automation|automation system]] shall not be required for operation. Failure of other components should have minimal impact upon its operation. | |||
While the automation system is not required, it will have a communication link to the controller for monitoring purposes. | |||
== User's Guide == | == User's Guide == | ||