Maintenance Of The Air/Flue Gas Drain Connection Flues; Temperature Sensor - DeDietrich DTGE130-35 Eco.NOxPlus Technical Instructions

15.4 Maintenance of the air/flue gas drain connection flues

The connection pipes must be serviced at least once a year.
- Check that the pipe and the terminal are empty along their entire
length. This can be done by checking that the boiler is operating
correctly; a particular check will be made to ensure that the
maximum calorific flow can be reached. Turn over the boiler at full
output. Check the meter to ensure that the gas flow complies with
the maximum flow indicated on the technical specifications table.

15.5 Temperature sensor

The resistance values at the various temperatures are indicated in
the tables on the next page.
If a defective sensor is detected, it is possible to check the resistance
at the various temperatures using a measuring device with a
corresponding measurement range (e.g. a multimeter). In order to
obviate incorrect measurements, the sensor must be disconnected
from the connector bar in the boiler distribution panel.
Outside sensor resistance
Temperature Resistance
(°C) (ohm)
-20 2392
-16 2088
-12 1811
-8 1562
-4 1342
0 1149
Resistance of the NTC 12 sensor kOhm
(boiler water, boiler return water, flue gases)
Temperature Resistance
(°C) (ohm)
10 22800
20 14770
30 9800
40 6650
50 4610
15/02/2011 - 300014279-001-J
Temperature Resistance
(°C) (ohm)
4 984
8 842
12 720
16 616
20 528
24 454
Temperature Resistance
(°C) (ohm)
60 3250
70 2340
80 1710
90 1270
DTG(E)130 - 35/45/65/90/115 Eco.NOxPlus
- Check the seal.
- Check the condensates evacuation device in the boiler and on the
pipe if used.
- Replace the leakproof seals and sections of pipe if these no longer
offer a perfect guarantee of leak tightness after being dismantled
during a maintenance operation (only for the visible part of the
pipe).
Resistance of the NTC 10 sensor kOhm
(Domestic hot water, Outlet B, Outlet C)
Temperature Resistance
(°C) (ohm)
0 32014
10 19691
20 12474
25 10000
30 8080
40 5372
15. Maintenance
Temperature Resistance
(°C) (ohm)
50 3661
60 2535
70 1794
80 1290
90 941
75