Routine Maintenance - Vaillant TURBOmax VUW 242 E Instructions For Installation And Servicing

6.2 Routine maintenance

6.2.1 Remove front case
Remove bottom hinge screw
(1, fig. 46) and pull lower door panel
forward and down to release it from
the top hinge pin (2, fig. 46).
Slide the top panel up to release
retaining clips (1, fig. 47). Lift off top
panel.
•
Remove boiler bottom cover by
undoing two screws (1, fig. 51)
and slackening two screws (2, Fig.
51).
6.2.2 Turn off the boiler (fig. 45)
•
Isolate the electrical supply to the
boiler
•
Turn off the gas service valve (2)
•
Turn off boiler CH service valves
(1 and 5)
•
Turn off DHW cold water service
valve (4).
6.2.3 Remove combustion chamber
front cover (5, fig. 44)
Remove four screws (2, fig. 54)
securing combustion chamber front
cover
Lift combustion chamber clear of top
retaining lugs and pull forward.
Remove combustion chamber cover by
first bringing the left side forward to
clear boiler casing.
6.2.4 Inspect main heat exchanger
Remove five screws securing heat
exchanger front panel (1 and 3,
fig. 48) and remove by gently pulling
down and forward.
Inspect main heat exchanger and
remove any deposits with a soft brush.
30
Supplied By www.heating spares.co Tel. 0161 620 6677
fig. 45
fig. 46
fig. 47