Does this unit require calibration upon installation

it ensures seamless integration with specific SureLight series equipment

This valve is designed for 250mV to 750mV DC systems

meaning it uses a mechanical spring to return the damper to a pre-set safety position whenever the 24V power source is cut

and GKT03002

Browning 4L220 Belt 326058-755 Does this unit require calibrationThe Browning 4L220 Belt is a heavy duty Fractional Horsepower (FHP) V belt designed for reliable power transmission in light duty HVAC and refrigeration applications. Engineered with a 22 inch outside diameter and a 1 2 inch top width, this wrapped V belt features a precision molded raw edge construction that maximizes grip and reduces slippage on standard 4L pulleys. The specialized rubber compound and high strength polyester tensile cords provide