Atmos Multi 24/80, Installation & Servicing Instructions Manual

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ATMOS MULTI version 2002 Page 38
signs of damage or water leaks, taking remedial
action where necessary.
10.4. Completion of inspection and servicing.
On completion of the annual inspection and service
the boiler must be checked for correct operation and
all controls returned to their original settings, as
found.
Where applicable check the Sentinal X100 inhibitor
concentration level within the system water,
topping up when necessary.
11. Component Replacement.
The replacement of the following components does
not require draining of the boiler.
11.1 Gas Valve.
Disconnect the gas supply from the gas valve to the
burner assembly via the connecting joint union and
remove the valves 'Push' on electrical connections.
(fig 36)
Unscrew and remove the gas injector nozzle from
the gas valve assembly. (fig 37)
Release the valves four fixing bracket retaining bolts
using an 8mm spanner and remove gas valve. (fig
38) Fit replacement gas valve in reverse order.
Figure 36
Figure 37
Figure 38
Reinstate boiler operation and check gas valve
settings (Refer to section 10.1)
11.2 Fan
Disconnect the gas supply from the gas valve to the
fan via the connecting joint union. (fig 36) and
remove gas supply tube from the fan inlet
connection.
Release the four nuts securing the fan to the burner
manifold using a 7mm socket. (fig 39)
Fit replacement fan in reverse order.
Figure 39.
Warning! When replacing components,
isolate the electrical supply and close the
boiler's gas service control tap. Allow the
boiler to cool before commencing work.