Inspect the fan and the inner grating of the burner
and clean where necessary using a soft brush or
compressed air.
Inspect the inlet casting sealing gasket and change
if necessary. Replace in reverse order.
3
. Cleaning the heat exchanger.
Inspect the heat exchanger from the topside of the
appliance and remove any deposits from the heat
exchanger and fins using a soft brush.
Re-assemble the boiler, fitting the burner assembly,
flue baffle and outlet casting in reverse order to
dismantling. Ensure all components are correctly
sealed and located, making sure that the flue tube is
pushed fully home into the outlet casting.
4
. Inspect air supply/flue gas discharge system.
Inspect the air supply /flue discharge system
throughout its entirety ensuring that it is in sound
ondition with no damage to the pipework or joints. c
Inspect the terminals and their position ensuring
they are clear and unobstructed, taking remedial
action where necessary.
5
. Unvented hot water tank inspection.
Remove the hot water tank's insulation shell,
ensuring it is intact and free from damage. Replace
if necessary.
Visually examine the domestic hot water tank for
signs of damage or water leaks, taking remedial
action where necessary.
10.4. Completion of inspection and
ervicing. s
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. The service identification
number should be increased by 1 after each service
(as described in the Appendix 2 Section 6).
Where applicable, check the Sentinel X100
inhibitor concentration level within the system
water, topping up when necessary.
I
mportant!
The heat exchanger may need cleaning on every
hird service inspection. t
Do not use a brush with metallic bristles, as this
will damage the heat exchanger.
A purpose made heat exchanger cleaning brush
(article number 93.98.12.410) is available to
purchase from Atmos Heating Systems.
11. Component Replacement.
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.
The replacement of the following components does
not require draining of the boiler.
1
1.1 Gas Valve.
Disconnect the gas injector nozzle tube between the
gas valve and the mixing chamber via the union
and remove the valves 'push' on electrical
connections (Fig 36 & 37).
Release the valve’s fixing bracket retaining bolt
using an 8mm spanner and remove gas valve
Figure 36
ATMOS MULTI Mk 2 version 2004
Page 37
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