The burner ignition has been factory set and should not need adjustment. However, if
adjustment is required a slow ignition screw is fitted to the appliance and is situated above
the cap screw in the water governor body (
fig. 6
). The screw is factory set 2 full turns out
(anti-clockwise) from the fully in position. Turning the screw clockwise delays the ignition,
anti-clockwise advances the ignition.
WARNING: NEVER OPERATE THIS APPLIANCE WITH THE OUTER CASE REMOVED.
Fig. 14
1. Check the piezo unit, flame safety device and thermocouple, clean or replace if
necessary.
2. Remove the burner assembly and clean using a soft brush or vacuum cleaner.
3. Check the pilot injector and clean or replace if necessary. Also clean the lint filter.
4. Remove the water governor assembly complete with push rod. Replace the seals if
necessary. Descale and regrease the push rod, washers and diaphragm housing using
Dow Corning 111 silicone grease.
5. Check for water and gas soundness. Replace ‘O’ rings, sealing washers and gaskets
where required.
Fig. 15
Page 14 of 35
Mersey Super - Installation & Service Instructions
09/12/2009
file://P:\System\DATA\Dx\DS1\installation\2551\I24-2551\I24-2551.htm
