Max thermostat/Temperature limitation
In normal operation, the boiler's supply temperature is
restricted by the ”Temperature limitation” potentiometer,
see image in section”Power control immersion heater”.
Normal setting is approx. 5 °C above the dimensioned
supply temperature. In addition to the setting for ”Temper-
ature limitation” there is also a ”Max thermostat”, which
also has the task of ensuring the limitation of the supply
temperature. Normal setting is approx. 10 °C above the
dimensioned supply temperature. During operation in R-
mode, the supply temperature can be adjusted using the
max thermostat.
Effekt-
begränsning
kW
Temperatur
begränsning
50°C
20
80
60
40
7030
97
11
13
5
5
35
3010
25
20
15
Säkrings-
storlek (A)
Max. thermostat
Temperature limiter
Temperature limiting
Outside sensor
The signal from the outdoor temperature sensor controls
the control centre so that the correct boiler/supply tem-
perature is obtained. The relationship between outdoor
temperature and boiler/supply temperature is set with
the "Offset heating curve" and "Heating curve selection"
knobs. The outdoor temperature sensor is normally located
on the north or north west wall, well protected from
mechanical effects. The sensor must measure the correct
outdoor temperature and must therefore not be affected
by the morning sun, for example. Electrical connection is
made to the relay card (29) terminal block (14). If a conduit
is used it must be sealed to prevent condensation in the
sensor capsule. The minimum cable cross section should
be 0.4 mm2 up to 50 metres, for example, EKKX or LiYY.
Temperature limiter
The temperature limiter (6) cuts off the power supply
between 90 – 100 °C and can be manually reset by pressing
the reset button, see section ”Resetting the temperature
limiter" on page 14.
Boiler/Supply temperature sensor
Boiler/Supply temperature sensor (18), see section "Com-
ponent positions" on page 25, measures the supply tem-
perature and sends a signal to the automatic heating
controls, which in turn corrects the supply temperature
using the immersion heater.
Temperature sensor data
Voltage (V)Resistance (kΩ)Temperature (°C)
4.78102.35-40
4.7073.51-35
4.6053.44-30
4.4739.29-25
4.3129.20-20
4.1221.93-15
3.9016.62-10
3.6512.71-5
3.389.810
3.097.625
2.805.9710
2.504.7115
2.223.7520
1.953.0025
1.702.4230
1.471.9635
1.271.6040
1.091.3145
0.941.0850
0.700.74660
0.510.52570
19EVC 13
English
Electrical installation
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