Trianco Contractor WM 70, User, Installation, Commissioning & Servicing Instructions, Page: 19 / 28

15
COMBUSTION HEAD SETTINGS
NOZZLE REPL ACEMENT
48
6
3
3
1 Switch off electrical supply to boiler and
turn off oil
3 Remove burner plug from control box.
3 Burner can now be removed from boiler
4 Remove blast tube from burner exposing
nozzle holder assembly.
5 The nozzle can now be carefully
removed taking great care not to
damage the electrodes. (see Diag.)
6 Fit a new nozzle of the same specification
taking the same care.
7 Check the position of the electrodes
after replacing the nozzle to ensure they
have not moved.
8 Refit the blast tube to the burner.
IMPORTANT -
BURNER NOZZLES ARE EXCLUDED
FROM THE MANUFACTURERS
GUARANTEE!
ELECTRODES
NOZZLE
NOZZLE HOLDER
ASSEMBLY
NOZZLE BOX SPANNER
+
-
1
2
1
2
AIR REGULATION
NOZZLE REMOVAL
The air regulator may have to be
adjusted to obtain the correct
combustion figures.