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The 15-second inter-purge (15IP) is a critical safety timing that allows the combustion blower to clear the combustion chamber for 15 seconds after a failed ignition attempt before the next 4-second TFI begins
This is a standard safety protocol in industrial water heating to prevent equipment damage after a thermal runaway event
The S20 series utilizes a zero-differential design
What power supply is required for the actuator
Carrier LA22LA123 Wheel 321702-401 The 15-second inter-purge (15IP) isThe Carrier LA22LA123 is a heavy duty, genuine OEM blower wheel designed for high capacity air handling in residential and commercial HVAC systems. This specific squirrel cage fan features a 15 1 2" diameter and a 15" width, making it a critical component for maintaining the static pressure requirements of larger Carrier, Bryant, and Payne air handlers and furnaces. Engineering specifications include a 3 4" bore and CCW (Counter Clockwise) rotation as
