Burner And Supply Pipe Installation; Preliminary Burner Checks - Valor 940 Installer And Owner Manual

INSTALLER GUIDE

10. BURNER AND SUPPLY PIPE INSTALLATION

10.1 Burner and supply pipe installation.
1. Refit the burner unit to the convection box with two screws.
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 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 and replace the end
,
cap.
2. Rotate the control pivot bracket clockwise as far as it will go and hold in this
position (See figure 27). 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 turn the control pivot bracket anti-
clockwise. The burner flames should gradually
Figure 27. Control pivot plate
increase until the pivot bracket is nearly at its
furthest anti-clockwise rotation. Rotating further until the pivot bracket 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 section of
this guide.
Page 29
©
GDC Group Ltd. 2011