Table of Contents
Advertisement
INSTALLER
2 . 1 0 Outdoor temperature sensor
Correct positioning of the outside temperature sensor is essential to proper indoor temperature control. The sensor
must be installed outside the building to be heated, about 2/3 of the way up a NORTH or NORTH-WEST facing wall, well
clear of any flues, doors, windows and out of direct sunlight.
Fixing the outdoor temperature sensor to the wall
− Unscrew the protective cover from the sensor,
turning it anti-clockwise, to access the sensor
terminals .
− Mark the position of the hole, and drill a 5x25
hole for the expansion plug.
− Fix the sensor casing to the wall using the ex-
pansion plug provided.
− Insert a two core cable (with cross section betwe-
en 0.5 and 1 mm 2 , not supplied) to connect the
sensor to the boiler .
− Connect the two wires of the cable to the sensor
terminals. Polarity is irrelevant.
− Connect the cable from the outdoor temperature
sensor to the boiler as instructed in the "ELECTRI-
CAL CONNECTIONS" section.
− Screw the protective cover back on the outdoor
temperature sensor.
9
Position the sensor on a smooth area of wall. Prepare a smooth contact area for the sensor casing if the wall is
made from exposed brick or other rough material.
9
Avoid joins in the cable between the outside sensor and the control panel. If different cable lengths have to be
joined, make sure that the joins are sealed and adequately protected.
9
If cable ducts are used to route the sensor connection cable, keep these well clear of any power cables (230Vac).
Correspondence table
Measured temperature (°C) – Resistance of outdoor temperature sensor (Ω).
T (°C)
-30
-25
-20
-15
-10
-5
0
R (Ω)
T (°C)
171423
5
129435
10
98663
15
75800
20
58718
25
45830
30
36036
35
R (Ω)
28536
22751
18257
14472
11976
9787
8039
30
T (°C)
R (Ω)
40
6640
45
5513
50
4600
55
3856
60
3247
Advertisement
Table of Contents
