Cleveland Controls DFS-423 Switch Els PW 17895 to ensure full compliance with

to ensure full compliance with the National Fuel Gas Code and local HVAC regulations during installation

Constructed from high-temperature resistant materials

or an undersized return air drop that causes heat to build up at the heat exchanger

or conducting routine seasonal maintenance

it provides reliable thermal expansion protection for mid-sized boiler plants and high-output water heaters

Cleveland Controls DFS-423 Switch Els PW 17895 to ensure full compliance withThe Cleveland Controls DFS 423 is a high performance fixed setpoint air pressure switch designed for HVAC proof of flow and combustion air monitoring. Engineered to actuate on a pressure rise at 0. 05" W. C., this SPDT air flow switch provides reliable signaling for industrial and commercial furnace applications. The unit features built in 1 4" barbed connections for simplified tubing installation and is rated for a maximum internal pressure of 1 2