On most Carrier units

connect the sample line to the "L" port of the desired element while leaving the "H" port open to the atmosphere

replacing the entire Amana-Goodman harness is the preferred industry standard to ensure long-term reliability and to prevent future failures caused by compromised insulation or loose terminal crimps

Designed for mid-to-high pressure industrial applications

Can I use this for non-Goodman brands

Cleveland Controls DDP-109-187 Switch Els PW 17895 On most Carrier unitsThe Cleveland Controls DDP 109 187 is a heavy duty dual air pressure sensing switch designed for critical HVAC and energy management proving circuits. This unit features two independently adjustable SPDT switches mounted on a common foot bracket, allowing technicians to establish a precise deadband for complex control sequences. Each switch assembly operates separately, measuring differential pressures from 0. 05" wc to 2. 0" wc. This configuration is