> For the complete documentation index, see [llms.txt](https://docs.myrspoven.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.myrspoven.com/ai-features/mixed-circuit-control.md).

# Mixed circuit control

A mixed circuit feeds both another downstream heating or cooling circuit *and* at least one air handling unit (AHU). Because the same circuit serves two loads with different temperature requirements, myCoreAI applies a dedicated control strategy so neither side is starved.

## Qualification

myCoreAI treats a circuit as mixed when all three conditions hold:

1. A **reference formula** is defined for the circuit — a reference held in the circuit's metadata that couples it to the other systems it feeds.
2. A **supply curve** exists for that reference — the baseline temperature curve against outdoor conditions.
3. **Component connections** link the reference to at least one downstream heating or cooling circuit *and* at least one downstream AHU.

Otherwise the circuit is controlled as a regular (non-mixed) circuit.

## Supply temperature

myCoreAI combines its optimization target with the baseline value from the supply curve so the most demanding downstream consumer is always covered:

| Circuit type | Supply temperature                                        |
| ------------ | --------------------------------------------------------- |
| Heating      | **Maximum** of optimizer target and supply curve baseline |
| Cooling      | **Minimum** of optimizer target and supply curve baseline |

This prevents the AHU side from being undersupplied when the radiator side could be lowered further, and vice versa.

## Fallback

If the supply curve is missing or returns a non-numeric value at the current outdoor temperature, myCoreAI logs a warning and uses the optimizer value directly, without the baseline floor or ceiling.

## Identification

Mixed circuits are tagged in the Components view of myPortal.


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