Emerson M21 Carbon Monoxide Alarm User Manual


 
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MAN-0076 Rev 05 Millennium II
December 07, 2012
Net Safety Monitoring Inc
SECTION 1: Installation
1.1 Unpack
Carefully remove all components from the packaging and check them against the enclosed packing list. Inspect all
components for obvious damage such as broken or loose parts. If you find any components missing or damaged, notify
the representative or Net Safety Monitoring, immediately.
1.2 Mounting
Ensure transmitter and sensor are securely mounted, taking into consideration all requirements. Sensors may be
installed directly to transmitters or remotely using a Certified Net Safety junction box. See Figure 11 when mounting
sensor remotely.
1.2.1 Transmitter Orientation Option
Depending on the installation and mounting requirements, the transmitter enclosure (housing) may be mounted in
different orientations as seen in Figure 2. To accommodate the different mounting orientations, the electronics module
can be rotated inside the transmitter enclosure. See Section 1.2.3 Rotating electronics module relative to enclosure and
conduit entriesand Figure 4.
NOTE: Ensure the orientation allows proper wiring and adequate wire length inside the transmitter enclosure.
Figure 2: Different enclosure orientations
When determining suitable enclosure orientation for specific application, installers should observe all local regulations
and guidelines for mounting enclosures.
* M20, ½” NPT, & ½” BSP threads also available