20.1 Checking the aeration setting of the burner.
1.
The aeration shutter is factory set. It is important to ensure
that the aeration setting is correct (See figure 35).
2.
To adjust the aeration setting loosen the two aeration shutter
screws, slide the aeration shutter to the desired position and
tighten the fixing screws.
20.2 To remove the ignition microswitch.
(See figures 36).
1.
Remove the firefront casting and the front cover casting.
2.
Disconnect the leads from the
ignition microswitch (The lower of the
two microswitches - See figure 36).
3.
Detach the microswitch and
insulation pad by removing two
screws.
4.
Replace in the reverse order.
5.
Check that the microswitch
operates correctly by fully closing it
and observing that there are sparks at
the pilot electrode.
20.3 To remove the gas shut-off
microswitch.
(See figures 36 & 37).
1.
Remove the firefront casting and the
front cover casting.
2.
Loosen the thermocouple nut to free
the microswitch leads and pull the leads
clear of the thermocouple interrupter block
(See figure 37).
3.
Detach the bridging bracket,
microswitch assembly by removing two
screws (See figure 36).
4.
Replace in the reverse order. When
refitting the leads to the interrupter block,
make sure that they are secured firmly to
give a good electrical contact. Do not over
tighten the nut.
Page 41
©
Baxi Heating U.K. Limited 2010.
INSTALLER GUIDE
Figure 37.
Figure 36.
Figure 35.
Summary of Contents for 963
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