10. BURNER & SUPPLY PIPE INSTALLATION
10.1 Burner and supply pipe installation.
1. Fit the burner unit to the hotbox with two screws previously removed.
2. Connect the supply line to the appliance.
3. Turn on the gas supply and pressure check the installation pipework for gas
soundness. In the United Kingdom (GB) check in accordance with the current edition
of BS 6891. In the Republic of Ireland (IE) check in accordance with the current
edition of IS 813 “Domestic Gas Installations”.
10.2 Preliminary burner checks.
Some burner operations can be checked at this stage. Checking now will mean that
less disassembly will be required if any problems are found. A full check should still
be made, however, after final installation.
1. If closed
, open the isolating valve at the inlet ‘T’ connector.
2. Depress the control pivot plate / control knob as far as it will go and hold in this
position (See figure 24). This should close the
ignition circuit and simultaneously open the
gas tap allowing the gas to flow to the pilot.
Wait a few seconds while the air is purged.
The electronically generated sparks should
light the pilot. The pilot should then light the
main burner at its low setting. There may be a
delay of up to four seconds between the pilot
lighting and ignition of the gas at the main
burner. This is normal and is due to the time
required to fill the main burner compartment
with sufficient gas for ignition.
3. When the burner is operating properly, gradually lift the control pivot plate / control
knob upwards. The burner flames should gradually increase until the pivot bracket is
nearly at its furthest anti-clockwise rotation. Lifting further until the pivot bracket /
control knob comes to a stop should then turn the burner and pilot off.
4. If the above checks are satisfactory, continue with the installation. If not, check the
control and ignition circuitry and components as described in the servicing and parts
replacement section of this guide.
Page 30
© Baxi Heating U.K. Limited 2009.
INSTALLER GUIDE
Figure 24. Control pivot plate
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