De Dietrich GD 134-142 Manual De Instrucciones página 16

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These actions must be carried out by a qualified technician.
1 Package list
Boilers DTG 320-... S
Boilers DTG 330-... S
Natural gas L/LL
H 13mbar
Natural gas H/E
2 Changing the burner injectors
3 Changing the injectors on the principal burner
Cut the electricity and gas supply to the boiler.
Remove the gas supply pipe from the ignition burner (13 mm
spanner).
Remove the nozzle + seal.
16
8 9 10
GD134 GD135 GD136
GD144 GD145 GD146
A + B Lift out the injector with a number 12 spanner assemble the
new injectors with their new joint.
C Pressure socket
C
- Fit the unit together (13 spanner)
GD 134-142 + 144-152
11 12 14
GD137 GD138 GD139
GD147 GD148 GD149
Cut the electricity and gas supply to the boiler.
Natural gas H/E
Natural gas L/LL
H 13mbar
Reassembly:
Correctly replace the seals.
First tighten the injectors by hand and carefully lock them using
a spanner.
Carry out a gas tightness check.
Unscrew the nozzle using a screwdriver and screw in the new
injector.
Natural gas H/E
Natural gas L/LL
H 13mbar
Carry out a gas tightness check
16 18 20
GD140 GD141 GD142
GD150 GD151 GD152
Nozzle Injector marking
Ø 3.90 mm 390 A
Ø 4.50 mm 450 A
Nozzle Injector marking
Ø 0.8 mm 80
Ø 1 mm 100
23/05/2011 - 94858363 - 8358-4322F