Designed with a midpoint ground configuration

it ensures exact fitment for Goodman furnace blowers and Amana air handling units

The 1/8" NPT port acts as a vent or a breather to ensure the internal diaphragm moves freely according to atmospheric pressure

Does the 1-2 PSI spring require a specific mounting position

Johnson Controls S350PQ-1 Module R-410A Designed with a midpoint groundThe Johnson Controls S350PQ 1 is a high performance Proportional Plus Integral Temperature Stage Module designed for precise modulating control in commercial HVACR applications. This electronic stage module interfaces seamlessly with the A350 series, utilizing a 5 Vdc reference provided by the A350 and operating on a standard 24 V power supply. Field proven and versatile, the S350PQ 1 offers both 0 to 10 Vdc and 0 to 20 mA analog outputs, allowing