6
ERn Wall-mount Installation Manual
Chapter 1
Prepare for Installation
Unpack and Inspect
Before you begin installation, check your shipment and confirm it arrived complete and undamaged.
1:
Check the shipping container for physical damage.
2:
If you find damage, document it to help with a claim against your shipper.
3:
Unpack your order and check the contents against the packing list to be sure your order is
complete.
4:
If you discover a problem, call ETC Systems Group.
Main Circuit Breaker Protection
Before you begin installing the Unison
external processing rack enclosure, make sure you have installed
a main circuit breaker cabinet or other readily accessible input power disconnect device in the same,
room or in close proximity to the installed ERn enclosure.
Maximum Current Input
The ERn enclosure draws a maximum current of 3.5 amps when fully populated. The maximum
allowable protection device rating is:
• 20A at 120 VAC
• 15A at 230/240 VAC
Where to Install the Enclosure
The Unison External Processing Enclosure (ERn) can be wall-mounted or rack-mounted depending on
the model ordered. For rack-mounted installation instructions see the
ERn Rack-mount Enclosure
Installation Manual
.
Install the ERn wall-mount enclosure on a load bearing wall that is located in an electrical closet or a
room with restricted public access. It is recommended that you install the rack at least 914.4 mm
(36 in) off the floor surface to ensure clear view of the P-ACP for programming and general operation.
WARNING:
Circuits that are installed without an accessible power disconnect device
cannot be serviced or operated safely. Follow local codes and restrictions.
AVERTISSEMENT:
Il est imprudent d'utiliser ou de réparer les circuits installés sans qu'un
dispositif de déconnexion de l'alimentation ne soit accessible.
