7
Installation
Heat Sink Considerations – Heat Dissipation
The Chromalox ITLS, ITLSC1D2, ITAS & ITASC1D2 Multiple Loop Heat Trace panels employ SSRs (Solid State
Relays) as a means to switch the heating load power. Inherently, SSRs produce heat when operating. This heat
is dissipated through the heat sinks which are typically mounted on the sides of the enclosures. These heat sinks
must be mounted such that the fins are vertically orientation in order to allow the heat sink to properly dissipate the
heat from the controller. The air flow around these heat sinks must in no way become restricted.
To maintain UL/cUL listing, the heat sinks must be inspected
prior to and during every season, or no more than every 12
months, to confirm that no debris or objects are in contact
with the heat sink. All debris must be removed from the
heat sink fins. High pressure blasts of clean, dry air or
other means which will not damage the fins are to be used
to dislodge all debris from the fins.
Servicing Heat Sinks
In the rare occurrence that the Power Board assembly, which
includes the Heat Sink, needs to be removed or inspected,
a minimum of 7 inches (18 cm) of clearance is needed to
externally withdraw the assembly from the enclosure.
Outdoor Applications
Equipment protection from the environment must be carefully considered when installing these systems outdoors.
Both
Solar Loading and UV Rays from the sun can impact the performance of these systems.
Solar Loading
The panel ratings, per UL/cUL, are based on operating the panel within the listed Ambient Environmental tempera-
tures and under NO SOLAR LOAD (exposure to direct sunlight).
Therefore, it is
highly recommended to install an adequately designed Solar Shield to provide shade across the entire
top of the panel so no solar load is realized. This Shield will also provide some protection to the HMI Touchscreen.
See the appendix for Solar Shield design options offered by Chromalox.
UV Rays
The IntelliTrace
®
Heat Trace Panels employ an HMI Touch Screen with LED backlit technology. UV Rays are known
to be damaging to these types of HMI touch screens. Chromalox insists on installing HMI Sunscreens in all outdoor
applications to protect the HMI Touch screen from these harmful rays.
See the appendix for HMI Sunscreen design options offered by Chromalox.
Please note that warranties will only be honored if all of the following conditions are met:
1. Suggested options are adequately designed are properly employed
2. These designs must either meet or exceed the designs suggested by Chromalox
3. This Optional Equipment must be installed prior to initial equipment commissioning
Adjacent Panel
or Wall
7 Inches
(18 cm)
Summary of Contents for IntelliTrace ITAS
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