this SPST fan relay protector ensures the blower motor only activates once the heating element reaches 130°F

Mounting in other positions may cause a small zero shift that must be corrected using the zero trimmer

Universal Compatibility: Direct fit for all VBB/VBS valve bodies

Does this relay require manual calibration of the time delay

Johnson Controls T22BBC-1 Thermostat Refrigerant this SPST fan relay protectorThe Johnson Controls T22BBC 1 is a professional grade line voltage wall thermostat designed specifically for heating only applications in demanding environments. This mechanical SPST thermostat provides reliable control for 120V, 208V, or 240V systems without the need for heat anticipators. Engineered for performance in unit heaters, fan coils, and electric duct furnaces, the T22BBC 1 features a rugged steel cover with a "Tawny Silver" baked enamel