Valor 956, Installer And Owner Manual

Page: 27 / 52

11. BURNER INSTALLATION
11.1 Burner and supply pipe installation.
1. Refit the burner unit to the hotbox using the
two screws removed previously. The burner
securing points should be on the inside of the
hotbox as shown in figure 19.
2. Connect the supply line to the appliance.
3. If closed
,
open the isolating valve at the
inlet elbow.
4. Turn on the gas supply and pressure check
the installation pipework for gas soundness. In
the United Kingdom check in accordance with
the current edition of BS 6891. In the Republic of Ireland refer to the current edition of
I.S. 813 “Domestic gas installations”.
11.2 Lighting the burner.
1. Depress the control knob and rotate it slowly anticlockwise to the ‘PILOT / IGN’
position. A 'click' will be heard as the integral piezo operates. A spark should be seen
between the electrode and pilot tip.
2. Turn the control knob clockwise to the 'OFF' position. Repeat this operation until a
flame appears at the pilot. There may be a delay before the pilot lights due to air
being purged from the system. When a flame appears at the pilot keep the control
knob depressed and hold the pilot ignition position for ten seconds. When the control
knob is released the pilot flame should remain lit.
11.3 Operating the burner.
1. When the pilot burner is operating properly, gradually turn the control knob anti-
clockwise to 'HIGH' (Depress the knob slightly to get past the ‘PILOT / IGN’ position).
The main burner should now light. Depress the control knob slightly to release from
the 'HIGH' position and turn back (clockwise) to 'LOW'. While turning, the burner
flames should gradually become lower but remain alight. Depress the control knob
slightly to release from the 'LOW' position and turn back (clockwise) to the ‘PILOT /
IGN’ position. The main burner should extinguish but the pilot should remain alight.
Depress the control knob slightly and turn back (clockwise) to turn OFF.
This will extinguish the pilot.
If the above checks are satisfactory, continue with the installation. If not, check the
control and ignition circuitry and components.
Page 27
©
GDC Group Ltd 2014
INSTALLER GUIDE
Figure 19. Burner attachment points