5
3
3
4
3.4 REMOVAL OF NON RETURN VALVE
1. Refer to Section 2.33.
2. Remove the upper front panel. Refer to
Section 3.2.
3. Remove the screw retaining the lower flue
manifold to the heat exchanger.
4. Lift up the flue Sections and disengage
from the sump then pull the flue Sections
downwards and remove.
5. Remove the Non Return Valve assembly
and check for damage and that the non
return valve moves freely. If any damage
is apparent the whole assembly must be
replaced.
Ensure correctly sized non
return valve is fitted.
6. Reassemble in reverse order, ensuring
all flue manifold seals are located and
undamaged. Replace if required.
7. Check the operation of the boiler. Refer to
Section 2.33.
3.5 REMOVAL OF BURNER
1. Refer to Section 2.33.
2. Remove the front panel. Refer to Section 3.2.
3. Remove the fan and gas valve assembly. Refer to
Section 3.3.
4. Remove the four or six screws and the two extended
nuts securing the burner to release the burner body.
5. Lift the burner body by lifting out of its recess.
6. The burner can now be cleaned on the back face
only, the metal fibre surface must not be touched. The
burner must be replaced if it shows signs of damage.
7. After cleaning the burner replace it in the recess and
check the burner body seal for signs of damage.
If damage is apparent it must be replaced. The
upstream (stainless steel) side may be cleaned of dust
and debris.
8. Reassemble in reverse order. Ensure the notch in
the burner aligns with the up-stand feature in the
heat engine. The four or six screws and 2 extended
nuts should be fitted following a diagonal tightening
sequence twice. All fittings should be secured firmly.
9. Check the operation of the boiler (Refer to Section
2.33).
4
7
6
53
Installation & Servicing
SECTION 3 - SERVICING
SER
VICING
Summary of Contents for EVOMAX 2 30
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