Riello 20020843, Инструкции для установщика и технического сервисного центра

Страница: 45 / 72

INSTALLER 45
CONNECTING THE OUTDOOR TEMPERATURE SENSOR
The correct positioning of the outdoor sensor is of fundamental importance for proper climate control operation.
The sensor must be installed outside the building to be heated, at approx. 2/3 the height of the NORTH or NORTH WEST
façade and far from flues, doors, windows and sunny areas.
Fastening the outdoor sensor to the wall
- Unscrew the sensor protection box cover, turning it
anticlockwise to access the terminal board and fasten-
ing holes
- Trace the fastening points using the box as a template
- Remove the box and drill the holes for the 5x25 expan-
sion plugs
- Fix the box to the wall, using the two dowels supplied
- Insert a two core cable (with cross section between
0.5 and 1mm
2
, not supplied) to connect the sensor to
terminals 20 and 21 (see the diagram on the previous
page)
- Connect the two cable wires to the terminal board with-
out having to identify the polarities
- Fully tighten the cable gland nut and close the protec-
tion box cover.
b
The sensor must be positioned on a smooth section of wall; in the case of exposed brickwork or an uneven wall,
the smoothest possible area must be used
b
The connection cable between the outdoor temperature sensor and the control panel must not have joints; if nec-
essary, they should be plated and adequately protected. It is recommended a shielded cable be used.
b
Any channelisation of the connection cable must be separated from live cables (230Vac).
Correspondence table
Temperature measured (°C) - Resistance value of the outdoor temperature sensor (
Ω
).
T (°C) R (Ω) T (°C) R (Ω) T (°C) R (Ω) T (°C) R (Ω)
-50 43907 -15 5861 20 1,218 55 345.3
-45 31840 -10 4574 25 1000 60 293.8
-40 23374 -5 3600 30 826.8 65 250.8
-35 17359 0 2857 35 687.5 70 214.9
-30 13034 5 2284 40 574.7 75 184.8
-25 9889 10 1840 45 482.8
-20 7578 15 1492 50 407.4