andrews 32/143 Installation Manual, Operation And Service Manual page 33

SECTION 4
HI-FLO RANGE
PERMANENT
PILOT MODELS
Fig 21.
28
COMMISSIONING
Lighting the Burner
Open the main gas supply cock after all connections to the gas control are completed
and test all connections using a manometer. Purge air from pipework and ensure there
are no loose connections to burner or pilot pipe. NOTE! The gas control will be damaged
if inlet pressure exceeds 35mbar (14in Wg).
1. Ensure gas supply is on.
2. Turn gas control knob to PILOT position.
3. Depress knob and activate piezo igniter.
4. Keep knob pressed in for a further 40 seconds after pilot lights, then release knob and
check that pilot remains lit. If not, turn off then wait 3 minutes before repeating from
step 2. Observe via the view port.
5. Turn control knob to ON and turn control thermostat dial to required water
temperature. The burner will now light.
6. Check pilot and gas connections for soundness with leak detection fluid whilst burner
is alight. Turn off, seal any leakages, then re-test.
WARNING! if pilot goes out, do not attempt to relight gas until at least 3 minutes have
elapsed. If gas supply has been interrupted and immediately reconnected, unburnt gas
will pass into the combustion chamber due to operation of the thermopile. Do not
attempt to re-light for at least 5 minutes to allow unburnt gas to disperse. Ventilate the
area if possible.