Riello TAU 150 UNIT, Руководство по установке и обслуживанию

Страница: 36 / 72

INSTALLER 36
OUTDOOR SENSOR CONNECTIONS
Correct positioning of the outside temperature sensor is essential to proper indoor climate 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 outside sensor to the wall
- Unscrew (anti-clockwise) the cover from the sensor
casing to access the sensor terminals and fixing holes.
- Use the sensor casing as a template to mark the drilling
points on the wall.
- Remove the sensor casing and drill 5x25 holes for the
expansion plugs.
- Fix the sensor casing to the wall using the two expan-
sion plugs provided.
- Insert a two core cable (with cross section between 0.5
and 1mm2, not supplied) to connect the sensor to ter-
minals 20 and 21 in the boiler (see diagram on previous
page).
- Connect the two wires of the cable to the sensor termi-
nals. Polarity is irrelevant.
- Tighten the nut on the cable guide and fit the cover on
the sensor casing.
b
Position the outdoor temperature 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.
b
Avoid joins in the cable between the outdoor temperature sensor and the control panel. If different cable lengths
have to be joined, make sure that the joins are sealed and adequately protected.
b
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 (O).
T (°C) R (Ω) T (°C) R (Ω) T (°C) R (Ω)
-50 43907 -5 3600 40 574.7
-45 31840 0 2857 45 482.8
-40 23374 5 2284 50 407.4
-35 17359 10 1840 55 345.3
-30 13034 15 1492 60 293.8
-25 9889 20 1218 65 250.8
-20 7578 25 1000 70 214.9
-15 5861 30 826.8 75 184.8
-10 4574 35 687.5