but external lead connections should be verified against your specific wiring diagram

"fall" refers to the drop in pressure (increase in vacuum) created by the inducer fan

Is the discharge temperature thermistor included with this module

The permanently lubricated ball bearings and high-service factor design are engineered for continuous operation in demanding commercial environments

Johnson Controls V47AS-2 Valve Freon but external lead connections shouldThe Johnson Controls V47AS 2 is a heavy duty, direct acting temperature actuated water regulating valve designed for precision modulation in high demand heating applications. Built with a rugged cast iron body and a 2" ASME flange connection, this valve is engineered to maintain setpoint integrity within a 160 to 205 degrees F heating point range. The V47AS 2 (identical to the V47AS 2C) utilizes a Style 4 temperature bulb measuring 11 16" in diameter