To Remove The Gas Flow Rate Controller; To Replace The Burner - Valor Fires 963 Installer And Owner Manual

INSTALLER GUIDE
sure that the tap spindle is in the correct relationship relative to the control pivot
bracket. Rotate the pivot bracket fully clockwise. The tap spindle should "bottom out"
(i.e. the tap should be fully open) after the pivot bracket has actuated the ignition
microswitch but before it has pushed the microswitch leaf against the microswitch
body.
When refitting the thermocouple and interrupter block, make sure that the microswitch
wires are properly secured to give a good electrical contact. Do not over tighten the
nut.
20.12 To remove the gas flow rate
controller.
(See figure 45).
1. Remove the burner unit (See section
20.6).
2. If lying the burner on its back, ensure
that the work surface is suitably protected.
This will avoid damage to the work surface.
3. Detach the shut-off tap as detailed in
section 20.11 paragraphs 2-6.
4. Detach the burner pipe from the
controller. Support the controller while
detaching to prevent excessive strain.
5. Remove the nut and washer securing
Figure 45.
the control pivot bracket to the controller at
the front. Support the pivot bracket while removing the nut to prevent possible
damage to the microswitch.
6. Remove the hexagonal bolt securing the control pivot bracket to the controller at
the rear.
7. Detach the control pivot bracket.
8. Remove the hexagonal nut securing the controller to the front mounting bracket
and remove the flow rate controller.
9. Refit in the reverse order.
20.13 To remove the burner.
1. Remove the burner unit (See section 20.6).
2. Remove the metal gauze from around the
injector. To do this unscrew and remove the screw
from the front of the burner tray.
3. Support the elbow injector and unscrew the
injector nut.
4. Remove the two screws from the burner
clamping plate (See figure 46)
5. Lift the right hand side of the burner, slide it to
the right and lift clear.
Figure 46.
Page 45
©
Baxi Heating U.K. Limited 2010.