Valor Fires 954, Installer And Owner Manual

Page: 43 / 64

16.1 Checking the aeration setting of the burner.
1. The aeration shutter is factory set for
use with a ‘ pebble ’ ceramic fuel effect. It
is important to ensure that the aeration
setting is correct for the ceramic fuel
effect used. Check the aeration shutter
setting even if fitting the ‘pebble’ fuel
effect (See figure 38).
2. To adjust the aeration setting to suit
the fuel effect used, loosen the two
aeration shutter screws, slide the
aeration shutter to the desired position
and tighten the fixing screws.
16.2 To remove the ignition microswitch.
1. Remove the bottom front cover and
the front cover casting.
2. Disconnect the leads from the ignition
microswitch (The lower of the two
microswitches - See figure 39).
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.
16.3 To remove the gas shut-off
microswitch.
(See figures 39 & 40).
1. Remove the bottom front cover or fire
front casting.
2. Loosen the thermocouple nut to free
the microswitch leads and pull the leads
clear of the thermocouple interrupter
block (See figure 40).
4. Detach the bridging bracket,
microswitch assembly by removing two
screws (See figure 39).
5. 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.
Page 43
©
Baxi Heating U.K. Limited 2010.
INSTALLER GUIDE
Figure 39. Microswitches
Figure 40. Thermocouple interrupter block
Figure 38. Aeration shutter settings