User's Guide _______________________________________________________________________
24 ___________________________________________________________________ M211060EN-H
Drilling Instructions for Duct Installation Kit
0505-178
Figure 19 Drilling Instructions
The following numbers refer to Figure 19 above:
Probe assembled in duct installation kit plastic pipe
Drill the holes for the duct installation kit as follows:
1. Use a 24-mm drill bit to drill a hole to the duct wall for the
humidity probe.
2. Drill holes for the duct installation kit mounting screws around the
hole in a square arrangement, 42 mm apart from each other. Use a
3.2-mm drill bit to drill the holes for the mounting screws
(four ST4.2×16-C-Z DIN 7981 screws).
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