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Smoke Exhaust Relay Panel
The smoke exhaust relay box controls the power supply to a fan used in a smoke exhaust system: smoke exhaust turret, exhaust box, or other compatible fan.
It serves as the interface between the fire safety control system and the smoke exhaust fan motor to ensure the fan operates when the system switches to safety mode.
What is a smoke exhaust relay box used for?
In a mechanical smoke exhaust system, the relay box receives a control command from the fire safety system and controls the power supply to the relevant fan.
It is used in particular with smoke exhaust turrets and enclosures installed in commercial buildings, public access buildings (ERP), commercial kitchens, and other facilities requiring mechanical smoke extraction.
Relay Control Panel and F400/120 Fan
The control panel can be paired with an F400/120 smoke exhaust fan, designed to operate at 400 °C for 120 minutes, when this classification is required for the installation.
The control panel must be selected based on the motor’s specifications: single-phase or three-phase power supply, voltage, power, and current. It is therefore important to check the fan’s nameplate before selecting the model.
Safety Operation and Comfort Mode
Depending on the control panel and the installation configuration, the fan can also be used in comfort mode to provide routine ventilation for the space.
When paired with a suitable control, such as a variable-speed drive or a low-speed/high-speed (LS/HS) control, the fan can be used for ventilating a workshop, warehouse, or commercial space, as well as for exhausting a commercial range hood.
In the event of a smoke exhaust command, safety operation takes priority to ensure the fan operates according to the system’s intended configuration.
How do you choose the right relay control panel?
The control panel must be compatible with the fan it controls. Before choosing your model, check:
- the motor’s supply voltage;
- whether it is single-phase or three-phase;
- the motor power in kW;
- the motor’s rated current;
- the type of control system planned for the installation.
Need help choosing your relay panel?
If you’re unsure, send us the fan’s part number or a photo of its nameplate. We can verify the voltage, power, and current to help you select the appropriate smoke exhaust relay control panel.
