Fault Finding - Potterton mersey super Installation And Service Instructions Manual

Mersey Super - Installation & Service Instructions Page 11 of 35
2. Ensure that the gas and water supplies are turned ON.
3. Ensure that all hot water outlets are closed.
4. Remove the screw and sealing ring from the burner pressure test point and attach a
pressure gauge.
Fig. 10
5. Fully depress and hold the ON button ' 'and repeatedly press and release the IGN
button ' 'until the pilot is lit. The pilot flame can be observed through the pilot viewing
window.
6. Hold the ON button ' 'in for a further 10 seconds after the pilot is lit, then release. If the
pilot goes out, repeat the lighting operation keeping the ON button ' 'depressed a little
longer.
7. Test for gas soundness using a suitable leak detection fluid on all external gas joints.
8. Open a hot water outlet and the burner will ignite. Allow the water to run for a few
minutes then check the burner pressure - it should be 12.5 mbar (5 in w.g.), if the pressure
is not correct see the

FAULT FINDING

section.
file://P:\System\DATA\Dx\DS1\installation\2551\I24-2551\I24-2551.htm 09/12/2009