Detector Housing

Abstract

A duct detector housing includes a housing cover and a housing body defining a midline between the center of a detector and a printed circuit board within said body. Gas inlet and outlets are off axis of the midline to allow water that collects in conventional housing to drain from the housing. A maintenance mode button associated with a duct detector housing cover that is secured to a housing body of the housing provides a preselected time period during which removal of the cover is independent of a cover removal alarm. A printed circuit board within the housing has dedicated terminal blocks providing grouped connections with each of the groups segregated from another. An improved duct detector terminal has a hole in the terminal adapted to receive a test meter probe therethrough to provide an electrical contact between the wire.

1 . A process for testing a detector mounted within a duct housing sampling a forced air duct comprising:
 providing a maintenance mode button associated with a duct detector housing cover being secured to a housing body of the housing and containing the detector therein;   activating said maintenance mode button to provide a preselected time period during which removal of said cover is independent of a cover removal alarm;   removing said cover;   testing the detector; and   replacing said cover.   
     
     
         2 . The process of  claim 1  further comprising providing a pilot indicator light, said pilot indicator light changing activation mode upon said maintenance mode button being depressed. 
     
     
         3 . The process of  claim 2  further comprising said pilot indicator light operating in a second mode in a warning time period prior to the timed mode expiration. 
     
     
         4 . The process of  claim 2  further comprising overriding the maintenance mode by depressing said maintenance mode button within a preselected interval of time after the initial depression of said maintenance mode button. 
     
     
         5 . The process of  claim 2  further comprising returning to a normal mode if a subsequent event fails to occur within a preselected time threshold after initial depression of said maintenance mode button. 
     
     
         6 . The process of  claim 1  wherein said maintenance mode button is on said housing cover or said housing body. 
     
     
         7 . The process of  claim 1  wherein said maintenance mode button is remote from the housing.