Intelligent Products—DH500 Series Intelligent Air Duct Smoke Detector 11
1.
Remove the paper backing from the drilling template.
2.
Affix the template to the air duct at the desired mounting location
oriented on the duct (Figure 4).
3.
Make sure the template lies flat and smooth on the air duct.
4.
Center punch hole targets and remove the template.
5.
Drill the holes as indicated on the template.
6.
Slide the two speed nuts over the two small holes (Hole A) next to the
sampling tube bushing holes (Hole B) previously drilled in the duct
(Figure 2).
7.
Mount the detectors in or on air ducts at least six duct widths
downstream from any duct openings, deflection plates, sharp bends,
or branch connections.
Note: Where it is physically impossible to locate the detector
accordingly, the detector can be positioned closer than six duct
widths but as far as possible from the opening, bend, or
deflection plates.
1.
Remove the duct housing cover.
2.
Slide the foam gaskets over the tube bushings (Figure 3).
3.
Make sure the two small holes in the gaskets line up with the two duct
housing mounting holes.
4.
Put one 5/16 inch O-ring over each of the two No. 10 sheet metal
screws.
5.
Use the two sheet metal screws to secure the duct housing to the duct.
6.
Do not overtighten the screws.
Mounting
Drill the Mounting
Holes
Mount Duct
Housing
