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INSTALLER’S GUIDE
Page 32
Figure 49. Flow rate controller
Figure 48. Refitting dimensions of valves into
mounting bracket
2.
Turn the burner unit upside
down. Detach the
thermocouple and interrupter
block from the tap - See section
17.7 paragraphs 2 – 4.
3.
Detach the pilot pipe from
the tap.
4.
Detach the inlet pipe.
5.
Remove the hexagonal nut
securing the tap to the
mounting bracket.
6.
Detach the elbow by
unfastening the hexagonal nut
connecting it to the flow rate
controller. Lift the tap (complete with
elbow) clear.
7.
Loosen the hexagonal locknut
securing the elbow to the tap.
Remove the elbow by rotating it.
8.
If fitting a new tap, remove the
hexagonal nut at the mounting
bracket end of the old tap and fit to
the replacement tap. Prior to refitting
the elbow to the shut-off tap, apply
an approved sealant to the elbow
thread. Refit in the reverse order.
Refer to figure 48 to ensure accurate
refitting dimensions of the valves
and subsequently into the mounting
bracket. When refitting, make 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.