The Air Duct Monitoring Housing models must be installed to meet local codes and Authority Housing Jurisdiction.
The Air Duct Monitoring Housing models listed above come with an installation kit that contains a mounting template. Remove the paper backing from the template and affix to the air duct at the desired location.
Using the template as a guide, drill or punch (2) 1¼" (32mm) hole for input sampling and outlet tubes. Clean all holes.
Position FDBZ-WT enclosure in such a way that the holes on the template and FDBZ-WT line up with each other.
Mark the (4) FDBZ-WT mounting holes, then drill (4) 3/32" (2.5mm) pilot holes as marked.
Secure the FDBZ-WT enclosure to the air duct with (4) #12 x ¾" sheet metal screws available with the FDBZ-WT enclosure kit.
Fit the Air Duct Monitoring Housing on the fitted studs and secure with nuts (2) provided with FDBZWT enclosure.
Connect the sampling tube and outlet tube to the Air Duct Monitoring Housing (position the tube in such a way that air flows into the intake holes).