Contact probe
Contact probes can be mounted on the pipes, to
measure the heating-circuit temperatures, for
example.
n The contact probe is fastened to a pipe with
the trapezoidal brackets and retaining strap
provided.
n Clean the mounting point on the pipe. Subse-
quently a thermal compound (A) is applied and
the probe is fixed in position.
Fig. 21: Fastening the contact probe in place
If the sensor cables are too short, they can be
extended up to a maximum of 100m with wire
having a cross-section of 1.5 mm².
External probe
The connection of an outdoor probe is always
required for the Smart Control.
n Mount the external probe pointing skyward, in
a north-easterly direction, about 2.5 metres
above the ground. It may not be subjected to
direct sunlight and is to be protected against
excessive wind. Installation above windows or
air ducts is to be avoided.
n In order to carry out the installation, remove the
cover and secure the probe with the screws
provided.
n The customer is recommended to provide a
cable with wire cross-section of 0.5 mm
2
for
connecting the probe.
Fig. 22: External probe
33
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