63
PARTS REPLACEMENT
Temperature sensors
(NTC’S)
● Refer to the important information
and initial preparation on page 59.
● Identify which sensor(s) is to be
replaced.
● If required remove combustion
chamber cover by unclipping the
three clamps.
● Pull off connecting wire from sen-
sor.
● Unscrew NTC sensor (1,2 or 3).
● Replace NTC sensor.
● Reassemble in reverse order.
☞ NTC sensor 3 for TURBOmax
Plus only.
Main heat exchanger
● Refer to the important information
and initial preparation on page 59.
● Release central heating water
pressure.
● Remove combustion chamber cover
by unclipping the three clamps.
● Remove four screws (4) and pull off
combustion chamber front panel.
● Remove the fan, the locating spring
and the fan hood.
● Pull off the flow clamp (5) and
disconnect the return connection.
● Remove the main heat exchanger
(6), disconnect the return
connection by removing the clamp
(5) and pulling the pipe away from
the heat exchanger.
● Reassemble in reverse order.
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