Plum ecoMAX 200 W, Operation And Maintenance Manual

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11.6 Connecting emission sensor
Drawing 13 . Connecting emission sensor, where: 1 –
emission temperature sensor type CT2s-2, 2 – sensor
lead, 3 – flue.
The emission sensor should be fitted in the
boiler flue (3). The gap between the sensor
and the flue should be sealed. The sensor
should be installed by a qualified fitter, while
observing regulations applicable for chimney
systems. The emission sensor should be
connected to the sensor terminals acc. to
The emission sensor lead cannot touch hot
elements of the boiler and the flue, the
temperature of which exceeds 350°C. The
emission sensor should be installed in such
distance from the boiler at which it is not
directly exposed to flames, and where the
emission temperature does not exceed
450°C
Caution: Opening the boiler door
can
cause the emission
temperature to exceed the sensor„s
thermal resistance, which can burn
the sensor out.
11.7 Connecting temperature sensors
The regulator is compatible only with sensors
type CT4 (sensor of boiler and hot utility
water) and CT2s (emission sensor). It is
prohibited to use different sensors.
Sensor leads can be extended with wires
with section of at least 0,5mm
2
. Total length
of the sensor leads cannot exceed 15 m.
The boiler temperature sensor CT4 should be
fitted in the thermometric pipe, situated in
the boiler shell. Hot utility water temperature
sensors CT4 - in the thermometric pipe
welded into the tank.
The sensors must be secured
against coming loose from the
measured surfaces.
Good thermal contact between the sensors
and the measured surface must be ensured.
For this purpose, use thermally conductive
paste. Do not pour oil over the sensors.
The sensor cables should be separated from
mains leads. Otherwise, the temperature
indications can be incorrect. Minimum
distance between these leads should be at
least 10 cm.
The sensor leads cannot have contact with
hot elements of the boiler and heating
system. The temperature sensors‟ leads are
resistant to temperature up to 100°C.
11.8 Checking temperature sensors
The temperature sensors can be controlled
by measuring their resistance in a given
temperature. In the case of finding
significant differences between the value of
measured
resistance and the values
presented in the table below, the sensor
must be changed.
Temp. °C Min.
Ω
Nom.
Ω
Max.
Ω
0 802 815 828
10 874 886 898
20 950 961 972
25 990 1000 1010
30 1029 1040 1051
40 1108 1122 1136
50 1192 1209 1225
60 1278 1299 1319
70 1369 1392 1416
80 1462 1490 1518
90 1559 1591 1623