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The NEMA 1 rated
its primary function in most Reznor configurations is to manage blower operation based on the heat exchanger's surface temperature
provided the correct orifice and regulator adjustments are made during installation
Always check the unit’s nameplate or wiring diagram
Cleveland Controls DDP-109-186 Pressure Switch Els PW 17895 The NEMA 1 ratedThe Cleveland Controls DDP 109 186 is a professional grade dual pressure switch engineered for high precision air pressure sensing in HVAC and energy management systems. This robust unit features two independently adjustable SPDT snap acting switches mounted on a shared foot bracket, allowing technicians to establish a precise deadband for complex control circuits. Each switch assembly is housed in a plated metallic enclosure with a silicone diaphragm
