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The controller must be installed in a place where it is protected from extreme
vibration, impact, water, corrosive gases, steam, etc., and where temperature
and humidity do not exceed the values given in the technical data sheet.
We recommend the use of probes such as Honeywell 2k ohm NTC thermistor
temperature probes (Part Number: TP002K).
Both the air-on and air-off probe is to be installed inside the coldroom or
refrigerated display case where it is protected from direct air flow (i.e., far from
fans or doors) so that the average ambient temperature can be measured.
The evaporator probe must be installed in the coldest area between the
evaporator fins, i.e., where the greatest amount of ice will form and far from the
resistances or the area that warms up first during defrosting, in order to avoid
anticipating termination of said defrost cycle.
The wiring diagram of the ICON 343C / 363C controller is shown in Figs.1. & 2.
We recommend the protection of the controllers power supply from
electromagnetic disturbances, voltage peaks, etc., especially applications in
particularly critical industrial environments.
This can be done while carrying out the electrical wiring by keeping the
following points in mind:
A.
Keep the power output cables for the compressor, motors, etc. separate
from those for the control part;
B.
Keep the probe cables, the controller power cables and the attached load
power supply cables separate and far enough from each other, so they do
not cross or form spirals;
C. Use mains filters to reduce disturbances at the controller power supply, as
well as filters for the loads in order to attenuate disturbances at the
controller relay outputs;
D.
If strong radio disturbances are present, screen the entire device with a
metal screen and connect it to ground.
E.
Use correct wire gauges to avoid damaging the screw connectors.
6
ICON 343C / 363C USER GUIDE
6. INSTALLATION
6.1. First Things
6.2. Probes
6.3. Electrical Wiring
EN2B-0004UK07 R0304
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