Use the range adjustment screw to set the opening point within the 70 to 260 PSI range while the system is operating under load

allowing 24V thermostat control to trigger 230V components like air handler blowers or auxiliary heating elements

This specific assembly is officially classified as a 1-phase HVAC draft inducer assembly and is commonly used in commercial and residential series like the GCS16 and GCS24

Common signs include clicking or grinding noises (stripped gears)

OEM Reliability: Ensures the line voltage circuit operates within factory parameters to protect sensitive electronics

Johnson Controls V47AB-4 Valve Refrigerant Use the range adjustment screwThe Johnson Controls V47AB 4 is a direct acting temperature actuated water regulating valve engineered for precision sensing in heating applications. This 1 2 inch NPT cast brass valve features a heating point range of 160 to 230 degrees F, making it a reliable solution for maintaining specific discharge water temperatures in heat exchangers and cooling towers. The assembly includes a Style 4 sensing bulb (11 16" diameter by 3 1 4" length) and a 6