Description
The Bosch HVAC 8733952475 High Fire Pressure Switch is a control component used in gas furnace elements to monitor pressure conditions during full-capacity combustion. It is typically found in forced-air heating equipment, where it connects to the inducer air flow circuit to verify that venting conditions remain within the required range when the unit operates at higher firing rates in HVAC systems. It responds to changes in pressure differential created by a combination of air movement and exhaust flow. Its operates within the furnace is to confirm safe draught conditions during high heating operation and support regulated burner performance.
