DeDietrich G25 Manual de Serviço descarregar pdf (Página 75)

15/02/2011 - 300014279-001-J DTG(E)130 - 35/45/65/90/115 Eco.NOxPlus

15. Maintenance

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

- 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)

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

 Resistance of the NTC 12 sensor kOhm

(boiler water, boiler return water, flue gases)

 Resistance of the NTC 10 sensor kOhm

(Domestic hot water, Outlet B, Outlet C)

Temperature

(°C)

Resistance

(ohm)

Temperature

(°C)

Resistance

(ohm)

-20 2392 4 984

-16 2088 8 842

-12 1811 12 720

-8 1562 16 616

-4 1342 20 528

0 1149 24 454

Temperature

(°C)

Resistance

(ohm)

Temperature

(°C)

Resistance

(ohm)

10 22800 60 3250

20 14770 70 2340

30 9800 80 1710

40 6650 90 1270

50 4610

Temperature

(°C)

Resistance

(ohm)

Temperature

(°C)

Resistance

(ohm)

0 32014 50 3661

10 19691 60 2535

20 12474 70 1794

25 10000 80 1290

30 8080 90 941

40 5372

1 2 ... 70 71 72 73 74 75 76 77 78 79 80 ... 91 92

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