Introduction
Installation Instructions
Installation
monitor mounting plate
90DM4 monitor
3
1. Drill a 1
/
16
2. Orient the lateral air holes to face the air flow and insert the sampling
tube into the opening.
3. Affix the octagonal plate to the duct.
4. Place a standard electrical box on the octagonal plate (orient the
box's mounting holes vertically) and affix with two #8 metal screws.
5. Screw the mounting plate onto the electrical box.
6. Connect the wire from the electrical box to the monitor.
7. Connect the power and outputs as shown in Wiring Details.
8. Verify that the sampling tube feeds into the appropriate port on the
back of the monitor. Press the monitor onto the plastic base (the
latches will click).
16
electrical box
in. (3 cm) opening in the duct for the sampling tube.
90DM4 User Manual
duct
octagonal plate