Emerson Nelson CM-1, Manual

Page: 15 / 24

www.nelsonheaters.com
GA-2129 Rev. 11
Sheet 15 of 22
Jul. 2018
OPERATION
After installation and programming is completed, and 120VAC has been applied to TB-1, turn the power
switch to “ON”.
See Figure 1.
For a moment both the red and green L.E.D. bars will light, then the system will start scanning. The green
light bar will always appear under each active circuit, the first scan after powering up or resetting alarms. The
green bars will continue to appear under the circuit number until the thermostat turns the heater off, or a loss
of voltage occurs, or continuity is lost, or amperage drops below the threshold. After the alarm delay time-out,
the red bar will light up and the remote alarm will energize. This alarm condition will continue until the
problem is fixed, and the alarm reset switch is pressed, if the system is in manual reset mode.
Alarm Reset Button
S.O. Number
Panel I.D. No.
Digital Display Window
Alarm Silence Button
CM-1 Panel Enclosure
Figure 13
During normal operation of the system, the cabinet door will not need
to be opened. Therefore, keep the door closed and completely
fastened to protect the electronics from dirt and moisture.
!
WARNING: