Probe Connection Installation and Mounting • 17
11 Installation and
Mounting
The XR75CX controller should be mounted on a
vertical panel, in a 29 mm x71 mm hole, and secured
using the special bracket supplied.
The temperature range allowed for correct opera-
tion is 0 to 60°C. Avoid places subject to strong vibra-
tions, corrosive gases, excessive dirt, or humidity.
The same recommendations apply to probes. Allow
air to circulate through the cooling holes.
12 Electrical
Connections
The device is provided with screw terminal block
to connect cables with a cross section up to 2.5 mm
2
.
Before connecting cables verify that the power supply
complies with the device’s requirements. Separate the
probe cables from the power supply cables, from the
outputs and the power connections. Do not exceed the
maximum current allowed on each relay, in case of
heavier loads use a suitable external relay.
12.1.Probe Connection
The probes should be mounted with the bulb up-
wards to prevent damages due to casual liquid infiltra-
tion. It is recommended the thermostat probe be
placed away from air streams to measure the average
room temperature correctly. Place the defrost termi-
nation probe among the evaporator fans in the coldest
place, (where most ice is formed) and far from heaters
or from the warmest place during defrost to prevent
premature defrost termination.
Figure 11-1 - Installation and Mounting of XR75CX
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