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Installation and maintenance instructions 0020244997_07
13.6
Replacing defective components
13.6.1 Replacing the burner
1.
Remove the compact thermal module. (
2
1
2.
Undo the four screws
(1)
on the burner.
3.
Remove the burner.
4.
Install a new seal
(2)
on the new burner.
5.
Install the compact thermal module. (
13.6.2 Replacing the fan
1
2
3
4
5
6
7
1.
Remove the air intake pipe.
2.
Remove the three plugs from the gas valve assembly
(5 )
.
3.
Remove the plug from the sensor on the Venturi
(3)
by
pushing in the latching lug.
4.
Remove the plug/plugs
(4)
(depending on the unit
design) from the fan motor by pushing in the latching
lug in each case.
5.
Unscrew the two union nuts
(7)
and
(6)
on the gas
valve assembly. Use an open-ended spanner to coun-
terhold the opposite side of the gas valve assembly
when unscrewing.
6.
Unscrew the three screws
(2)
between the mixture pipe
(1)
and the fan flange.
1
3
2
7.
Remove the entire unit comprising the fan, Venturi and
gas valve assembly from the product.
8.
Unscrew the gas valve assembly fixing screw
(2)
from
the retainer.
9.
Remove the gas valve assembly from the retainer.
10.
Remove the Venturi
(3)
, including the gas connection
pipe
(1)
, from the fan by turning the bayonet fitting on
the Venturi anti-clockwise as far as it goes and remov-
ing it straight from the fan.
1
2
11.
Remove the gas valve assembly retainer
(1)
from the
fan by unscrewing the three screws
(2)
.
12.
Replace the defective fan.
