DeDietrich Elitec DTG 1304 Eco.NOx/V Technical Instructions page 13

7. Take out the heater door.
8. Place the bulbs in the sensor tube in front of the boiler. Push them
into the funnel until it butts against it.
9. Use the contact spring 5 for the sensor tube if bulbs 6 are on
number 2.
11. Push the screen support against the front plate.
12. Tighten the 2 pre-assembled plate screws after having pushed
the support fixing wings against the screws.
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Keep the position of the contact spring with relation to the bulbs.
Tighten the assembly before engaging the glove finger.
If there are 4 bulbs, the sensor tube contact spring is useless.
10. Then carefully fold the tubes and replace the traction stop tongue
in the funnel.
DTG 1300 Eco.NOx/V
13