Atmos Multi Series - Page 36

1 . Cleaning the appliance outlet casting
Using a 10mm socket, release the 3 fixing nuts
securing the outlet casting to the base of the heat
exchanger and remove the casting by gently
separating it from the push fit connection with the
condensate trap and the flue gas discharge pipe.
(Fig 31).
Remove the flue baffle and take care of the ceramic
core.
Inspect the outlet casting and baffle, cleaning
where necessary. Replace in reverse order.
F igure 31: Outlet casting
Figure 32: Flue baffle
2 . Inspecting the burner unit
Disconnect the gas injector nozzle tube between the
gas valve and the mixing chamber via the union,
and release the 3 fixing nuts securing the burner to
the inlet casting, using an 10mm socket. (Fig 33
tems 1 and 2) i
Disconnect the push on electrical connections to the
fan, high temperature thermostat, ignition electrode
nd ionisation electrode. a
F igure 33:
Removing burner assembly.
Lift and remove the burner assembly from the
ppliance. a
Inspect the ignition electrode and check that the
electrode's gap between the burner and earth pin are
8.5mm and 4mm respectively. (Fig 34). Replace or
adjust the electrode as necessary
Inspect the ionisation probe and check the distance
between the electrode and the burner is 8.5mm.
Replace or adjust the electrode as necessary
Figure 34:Settings of ignition/ ionisation
lectrodes. e
ATMOS MULTI Mk 2 version 2004
Page 36