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12.6 Connection of temperature sensors
The controller cooperates only with
temperature sensors of the CT4 type. The
use of other types of temp. sensors is
prohibited.
Sensor wires may be extended using wires of
cross-section area not less than 0.5 mm
2
.
Total length of wires of each sensor should
not exceed 15 m.
Insert boiler temperature sensor into
thermometer well fastened to boiler shell.
Fasten feeder temperature sensor to the
surface of feeder screw tube. Insert
temperature sensor of HUW tank into
thermometer well welded to the container.
The best way to mount mixer temperature
sensor is to insert it into a sleeve located in
the stream of flowing water, however, it is
also allowed to fasten the sensor in a contact
manner provided that the sensor and the
pipe are properly heat-insulated.
Mounting temperature sensor: 1 - pipe, 2 – clamps, 3 -
thermal insulation, 4 - temperature sensor.
Sensors shall be protected against
loosening from surfaces they are
mounted to.
Make sure thermal contact between the
sensors and the surface which temperature is
measured is good. Apply thermal paste to
improve the contact. Pouring sensors with oil
or water is not allowed. Sensor wires should
be separated from power supply wires.
Otherwise, temperature indications may be
erroneous. Min. distance between these
wires should be 100 mm.
Do not allow sensor wires to contact hot
parts of the boiler and heating system. Wires
of temperature sensors are heat resistant to
the temperature not exceeding 100°C.
12.7 Connecting weather sensor
The controller cooperates only with a
weather sensor of the CT4-P or CT6-P type.
The use of other types of temp. sensors is
prohibited.
The sensor should be installed on the coolest
wall of the building. Usually it is the northern
wall, under the roof. The sensor should not
be exposed to direct sunrays and rain. The
sensor should be installed at least 2 m above
the ground far away from windows, chimneys
and other sources of heat which could disturb
the temperature measurement. To connect
use wire with diameter at least 0,5 mm
2
up
to 25 m long. Polarization of wires is not
essential. Second end should be connected
to terminals of controller or properly to used
kind of controller. The sensor should be
screw to the wall. Access to assembly holes
is possible after unscrewing the cover of the
sensor. After connecting, select the type of
sensor used in the menu:
General settings → Weather sensor →
Sensor type
The weather sensor support is
disabled by default.
When setting the Sensor type
parameter to None, the influence
of the outside temperature sensor
reading on the weather control of
the circuits will be switched off.
It is possible to additionally set correction of
the sensor indications in the menu:
General settings → Weather sensor →
Sensor correction
For this purpose, the outside temperature
should be measured with an additional
thermometer and the value of the difference
between the measurement taken and the
sensor indication entered in the Sensor
correction parameter.
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