SECONDARY SOURCE INHIBITION

Function:
Automatically disables the secondary source (e.g., gas boiler) when the pellet stove/boiler is sufficiently hot.

⚙️ Electrical connections

• Thermostatic output (A5)
  • PIN 25 = COM
  • PIN 26 = NO
  • Type: dry contact (no voltage)

🧠 Operating logic

When the water temperature exceeds the threshold:

• Sensor: Th56 (default: 45 °C)
• Action: contact activation → secondary source blocking

👉 In practice:
If the pellet stove is already heating, the secondary source does not start.

📋 Parameters to set

• P46 = 3 → enables inhibition function
• Th56 → temperature threshold (default 45 °C)

🔄 Contact configuration (A95)

Defines the relay behavior:

• A95 = 0 → NO (normally open) contact
  → closes when temperature is exceeded
• A95 = 1 → NC (normally closed) contact
  → opens when temperature is exceeded