Johnson Controls KNB26A-600R Knob Replacing the 22-133 is recommended

Replacing the 22-133 is recommended whenever a device is unmounted to ensure a fresh

preventing accidental discharge and potential damage to the capacitor's dielectric material

this switch is "normally closed" and should show near-zero resistance

maintaining original system efficiencies and safety certifications without the need for field modifications

Its robust construction and standardized mounting make it an essential furnace safety switch for maintaining equipment uptime and protecting the heat exchanger from excessive thermal stress

Johnson Controls KNB26A-600R Knob Replacing the 22-133 is recommendedThe Johnson Controls KNB26A 600R is a field replaceable thermostat adjustment knob specifically engineered for Penn T26, W43, and W45 series controls. This HVAC replacement part is essential for restoring precise setpoint control on heavy duty line voltage thermostats and humidistats equipped with plastic covers. Built from durable, high impact plastic, the KNB26A 600R knob assembly includes the integrated trim disc, ensuring a flush fit and