Install Instructions

Mounting
To mount the Duct Probe Humidity Element, see Figure 2
and follow Steps 1 to 7.
Figure 2: Duct Probe Humidity Element
Table 2: Duct Probe Humidity Element assembly and
mounting
Number Description
1 Housing
2 Duct
3 Nut for conduit fitting
4 Conduit hole
5 Washer
6 Conduit fitting
7 Snap-on cover
8 Conduit knockout
9 Housing
1. Remove any excess insulation from the duct that
prevents the probe from extending a minimum of 3
in. (76 mm) into the air stream.
2. Use the hole saw to make a 1 in. (25.4 mm) hole in
the duct to insert the probe.
3. Remove the plastic cover from the housing.
4. Insert the probe into the duct, and use the housing
as a template to mark the location of the holes for
the mounting screws.
Important: Remove the unit before drilling to
prevent any metal remnants from falling onto the
circuit board.
5. Remove the unit, and drill a 1/8 in. (3 mm) hole for
each mounting screw.
6. Use a gasket, sealer, or other means to seal the area
around the 1 in. (25.4 mm) hole between the unit and
the duct.
7. Reinsert the probe, and secure the housing to the
duct using the two No. 8 screws provided.
Important: Seal any holes created during
installation to help reduce drafts and for more
accurate humidity readings.
Wiring
WARNING: Risk of electric shock. Disconnect the
power supply before making electrical connections.
Contact with components carrying hazardous
voltage can cause electric shock and result in severe
personal injury or death.
AVERTISSEMENT: Risque de décharge électrique.
Débrancher l'alimentation avant de réaliser tout
branchement électrique. Tout contact avec des
composants conducteurs de tensions dangereuses
risque d'entraîner une décharge électrique et de
provoquer des blessures graves, voire mortelles.
For wiring, follow these guidelines:
• Do not run low voltage wiring in the same conduit as
line voltage wiring or other conductors that supply
highly inductive loads.
• Use 18 AWG or 24 AWG wire.
• Make all wiring connections in accordance with the
National Electrical Code and all local regulations.
HE-69xx0NP Duct Probe Humidity Element with Temperature Sensor Installation Guide2