Product specifications

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.
6. Cleaning the CH filter in the optional Pre-
Assembled Pipework kit (see also 7.14).
Close the CH flow and return isolation valves.
Open the CH drain cock to drain the pipes with the
filter. Open the filter cover and clean the filter.
Refit the cover, close the drain and open the
isolation valves. Check for any leakage.
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 3 Section 6).
Check the inhibitor concentration level within the
system water, topping up when necessary.
Note: After servicing, the Benchmark
Checklist Service Record (located at the back
of this Manual) should be completed, signed
and returned to the customer.
Important!
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.
11.1 Gas Valve and Ignition Transformer.
Isolate the electrical supply to the boiler.
 Ignition Transformer. Detach the ignition
transformer from the valve by releasing the
retaining screw. Disconnect the lead to the ignition
electrode and disconnect the 4 way connector. Fit
the new transformer in reverse order.
Figure 36
ATMOS MULTI Mk 2 version 2008
Page 43