Emerson Nelson CM-1, Manual

Page: 5 / 24

www.nelsonheaters.com
GA-2129 Rev. 11
Sheet 5 of 22
Jul. 2018
INSTALLATION
When routing conduit to the panel, avoid top entry into the CM-1 enclosure. Top conduit entry provides a
potential moisture path to the electronic circuit boards. Bottom conduit entry is recommended. If top entry
cannot be avoided, avoid the area directly over the circuit boards. Drip loops as shown are recommended for
side and top entry when they cannot be avoided. A drip loop is a dip or bend in the circuit wire to block or
shed moisture, which may follow a wire to the circuit boards.
Top
Display
Drip Loop
Side Entry
Drip Loop
Drip Loop
Drip Loop
Bottom Entry
On-Off Switch
TB-6 (120 VAC)
Top Entry
Enclosure Wall
Sensor Module
Scanner Module
Panduit or
(avoid if possible)
Panduit or
Circuit Board
Circuit Board
DO NOT USE THESE AREAS
FOR CONDUIT ENTRY!
CM-1 Conduit / Wiring Entry for Enclosure
Figure 1
!
WARNING:
Moisture intrusion can damage the CM-1
electronic circuit boards. Do not place conduit
entry directly over the circuit boards.