CTC Union EcoZenith i550 Pro, Руководство по установке и обслуживанию

Страница: 112 / 128

114 CTC EcoZenith i550 Pro
For the installer
Outdoor sensor (B15)
The outdoor sensor should be fitted to the outer wall of the house, preferably
in a north-northeastern or north-northwestern direction. The sensor should
be placed out of direct sunlight. However, where this is difficult to achieve it
can also be shielded from the sun by a screen. Remember that the sun rises
and sets at different points at different times of the year.
The sensor should be placed about three-quarters of the way up the wall so
that it senses the correct outdoor temperature and so that it is not affected
by a heat source such as a window, infra-heating, air ventilation outlet, etc.
Connection: 2-conductor cable (min. 0.5 mm²) between the sensor and
control box.
The sensor is connected to terminal blocks G11 and G12 of the control
module. Connect to the outdoor sensor at the arrows.
NB: Strip the wire ends and fold them double if light cable is used.
It is important that the contact in the connections is good.
16.5.1 Sensor connection
Mount the sensor on the pipe. The sensing part is towards the end of the
sensor.
• Attach the sensor using the tie strap provided.
• Ensure that the sensor makes good contact with the pipe.
• NOTE: Apply contact paste to the end part of the sensor between the
sensor and the pipe to ensure good contact.
• NOTE: Insulate the sensor using pipe insulation, for example. This
prevents the measurement from being affected by the ambient
temperature.
• Connect the cables to the CTC EcoLogic’s connection block. If the
cable is too short, join extra length to it.
Sensor NTC 22k, white cable
Sensor PT1000, grey or red cable
Sensory element
Primary flow pipe
Sensor
Tie strap
Connection cables
!
Insulate the sensor
using pipe insulation,
for example. Do not
attach the sensor
cable permanently
until you have tested
where the best
location is.
contact paste