Description
The First Company E143 Heat Sequence refers to a factory-defined control and operating sequence used in fan coil systems to manage heating operation in a specific order. It coordinates how the system stages heat output, blower activation, and safety limits during a heating call from the thermostat in HVAC systems. The sequence ensures that the blower starts only after the heating element or hot water coil reaches a safe operating condition, and it continues running for a controlled period after the heat demand ends to distribute residual heat efficiently, and ensure a safe system shutdown in heating applications.
