TESTING FOR FIREBOX LEAKAGE
Appliances that are several years old or have been extensively dismantled should be checked for soundness. It is important that
all the products of combustion pass through the catalytic converter at the top of the firebox before leaving the appliance. The
firebox is heated by lighting for a few minutes to provide a flow through the firebox. The burner is then shut off and a smoke pel-
let or match introduced at the base of the fire underneath the burner tray. Large quantities of smoke will emerge from the top of
the appliance, but none should emerge from the joints or gasket faces, especially around the door. It is important to note that
the appliance can never be expected to be 100% smoke tight and small quantities of smoke may be seen in corners of joints
and gasket faces etc without affecting safety when the fire is in operation.
TROUBLESHOOTING GUIDE
Fire sparks but pilot does not light
No gas to fire, check isolators are open.
Pipe work blockage, clean out.
Air not fully purged, re purge supply or wait longer.
Spark earthing to metal work, reset gap correctly.
Blocked pilot, clean out internally.
Pilot lights but then goes out
Severe restriction in gas supply: clear obstruction.
Faulty thermocouple, replace pilot unit.
Blocked pilot, clean out.
Blocked lint gauze, clean.
Hold control knob in for longer.
Check control knob does not foul indicator plate.
If the pilot will not stay lit there is a problem with dirt,
the gas supply, or the thermocouple needs replacement.
Modifications are dangerous and can have a serious
unseen effect on safety. NEVER MODIFY OR BEND THE
THERMOCOUPLE TO MAKE THE PILOT STAY ALIGHT.
Fire does not spark at pilot
HT lead detached, refit.
Check the spark gap (see section 8.2).
Faulty piezo unit, replace.
Debris shorting out electrode, clean.
Spark shorting to metalwork under tray, realign HT lead.
Fire runs for a time and then cuts off
Loose or faulty thermocouple, rectify.
Blocked pilot, clean out.
Dirt or lint in pilot aeration hole or on the lint gauze,
clean thoroughly.
If the pilot will not stay lit there is a problem with dirt,
the gas supply, or the thermocouple needs replacement.
Modifications are dangerous and can have a serious
unseen effect on safety. NEVER MODIFY OR BEND THE
THERMOCOUPLE TO MAKE THE PILOT STAY ALIGHT.
Pilot flame shrinks when fire is on high
Poor gas flow to fire, check pressure with fire on high.
If pressure is low, remove any restriction in pipework or
valve.
Check all isolators are adequately sized and fully open.
Check meter pressure is adequate.
If the pilot will not stay lit there is a problem with dirt,
the gas supply, or the thermocouple needs replacement.
Modifications are dangerous and can have a serious
unseen effect on safety. NEVER MODIFY OR BEND THE
THERMOCOUPLE TO MAKE THE PILOT STAY ALIGHT.
Fire smells when first lit or in use
Newness smell from brand new appliance.
Leakage occurring. Carry out leakage test and rectify
any problems.
Combustible materials used in incorrect positions.
9
10.4
11.0
©
2008 Focal Point Fires plc.
