16
8.0 Changing components on
models with the Comfortstat
control
8.1
Changing Components
1. Before changing any components please read
Section 1.3 Important Information.
2. Turn off the gas supply and ensure that the
appliance is cold.
3. Remove the case by easing upward and
forward until it is clear of its retaining lugs (Fig.
30).
4. After changing any components
re-commission the appliance
8.2
Gas Control Tap
1. Undo the heat exchanger retaining nuts and
washers and draw the casting forward off the
locating studs. Once clear of the studs the
casting will need to be moved to the left to avoid
the gas tap locating bracket.
2. Remove the three screws holding the burner
retaining plate to the airbox, also remove the
insulation and undo the thermocouple nut from
the gas tap (Fig. 31 & 33).
3. Ease the thermocouple and electrode leads
from the rubber grommet (Fig. 32).
4. Disengage the burner from the injector and
pull the electrode lead off the spark electrode
5. Remove the supply pipe clamp and supply
pipe from the gas tap.
6. Unscrew and remove the pipe that connects
the gas tap to the injector carrier.
7. Unclip the thermostat phial.
8. Unscrew and remove the two screws that
secure the gas tap to the gas tap locating bracket
then ease the gas tap forward and clear of the
bracket.
9. On re-assembly ensure that the airbox sealing
grommet is correctly positioned and check for
gas soundness.
Mounting Lugs
Burner Retaining Plate
Grommet
Electrode Lead
Thermocouple
Burner Flame Ports
Spark
Electrode
Burner Gauze
Flue Outlet Tube
Insulation
Fig. 30
Fig. 31
Fig. 32
Installer Guide
Gas Tap
Injector
Washer
Fig. 33
Gas Tap Locating
Bracket
Injector carrier
Seal
Lock nut
© Baxi Heating U.K. Limited 2010.
