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Fan & Limit Controls

Available3 products
Fan and limit controls dictate when the blower fan operates to ensure furnace systems run efficiently and safely. They feature a temperature sensor that can turn off the burner or furnace if temperatures exceed safe limits. They come in several different form factors that allow for installation in several places throughout the heating system.
Switch Opening Temperature

Plenum Limit Controls

Plenum Limit Controls

Plenum limit controls mount through the wall of a duct or furnace plenum and turn the fan off when the trigger temperature is reached. They feature a large base with notches or holes for mounting hardware to pass through and hold them in place. This provides the temperature probe with a solid base to withstand high airflow. They are commonly used as protection devices to turn systems on or off when temperatures exceed or drop below their setpoint.

Limit Control – Board Mount

Automatic Reset

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Limit Control – Plenum Mount

Manual Reset

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Flame Rollout Limit Controls

Flame Rollout Limit Controls
Flame rollout limit controls are installed into a furnace or combustion heater and turn the system off when flames are detected outside the combustion area. This prevents furnace runaway and flames from spreading beyond the combustion area.

Flame Rollout

Manual Reset

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