Over-tightening can damage the internal copper lead or the valve's electromagnetic coil

Why is the 15-foot capillary tube necessary

Loosen the lock nut on the spring cage and turn the adjustment bolt clockwise to increase pressure or counter-clockwise to decrease it within the 10-35 PSI range

cover plate

Fenwal 01-017102-000 Temperature Control Freon Over-tightening can damage the internalThe Fenwal 01 017102 000 Temperature Control is a field proven thermoswitch temperature control engineered for precision in demanding industrial thermal management. Featuring an open on rise contact action, this unit is built with a rugged 300 stainless steel shell and a brass hex head for superior corrosion resistance and thermal conductivity. It operates across a wide temperature range of 100F to 600F, making it a versatile Fenwal 01 017102 000