After the VNC 200 has been in use for a period of time the external casing may become
slightly warm to the touch. Ensure that any adjacent surfaces will not be affected by the
heat.

Ventilation

DO NOT obstruct the ventilation openings during use. The VNC 200 has an integral
forced-air cooling system. A fan draws air in through the ventilation openings in the front
panel and expels the heated air through the openings in the back panel. The fan speed is
controlled automatically by an internal temperature sensor. The fan may, therefore, appear
to run faster as the unit warms up or if the ambient temperature is increased.
A self-resetting thermal cutout will shutdown the VNC 200 if the temperature exceeds
design limits.

Humidity and Water

DO NOT install or operate the VNC 200 in an area:
• In which the ambient relative humidity exceeds 85%
• That is prone to condensation
• Near water or in a location which may be prone to water seepage
Mounting Requirements

Tabletop Mounting

If not already attached, attach the four rubber feet to the bottom of the unit and place it
in a suitable location.
CAUTION: For rack-mounted installations, the following criteria must be observed
(in addition to the environmental requirements listed in “Environmental
Requirements.”

UL Guidelines for Rack Mounting

The following Underwriters Laboratories (UL) guidelines are relevant to the safe installation
of these products in a rack:
1. Elevated operating ambient temperature — If the unit is installed in a closed or
multi-unit rack assembly, the operating ambient temperature of the rack environment
may be greater than room ambient temperature. Therefore, install the equipment in
an environment compatible with the maximum ambient temperature (Tma: +95 °F,
+35 °C) specified by Extron.
2. Reduced air flow — Install the equipment in the rack so that the equipment gets
adequate air flow for safe operation.
3. Mechanical loading — Mount the equipment in the rack so that uneven mechanical
loading does not create a hazardous condition.
4. Circuit overloading — Connect the equipment to the supply circuit and consider the
effect that circuit overloading might have on overcurrent protection and supply wiring.
Appropriate consideration of the equipment nameplate ratings should be used when
addressing this concern.
5. Reliable earthing (grounding) — Maintain reliable grounding of rack-mounted
equipment. Pay particular attention to supply connections other than direct
connections to the branch circuit (such as the use of power strips).
VN-Matrix 200 Series • Installation 11