
Inspection and maintenance 12
0020289288_02 MicraCom Installation and maintenance instructions
33
7.
Protect the electrical components (e.g. the electronics
box) from spraying water.
8.
Use only new seals.
12.4.2 Removing the compact thermal module
Danger!
Risk of death and risk of material damage
caused by hot flue gas.
The seal, insulating mat and self-locking nuts
on the burner flange must not be damaged.
Otherwise, hot flue gases may escape and
cause personal injury and material damage.
▶
Replace the seal each time you open the
burner flange.
▶
Replace the self-locking nuts on the
burner flange each time you open the
burner flange.
▶
If the insulating mat on the burner flange
or on the back panel of the heat ex-
changer shows signs of damage, replace
the insulating mat.
Note
The compact thermal module consists of four
main components:
–
Gas valve assembly,
–
Venturi and restrictor for the reference pressure
pipe,
–
Burner flange,
–
Premix burner.
1.
Never remove the venturi from the burner flange.
x4
3
5
4
2
1
6
2.
Remove the plug
(5)
from the gas valve assembly.
3.
Remove the plug
(4)
from the ignition device.
4.
Remove the earth cable
(3)
from the ignition electrode.
5.
Unscrew the union nut
(6)
from the gas valve assembly.
6.
Undo the four nuts
(1)
on the burner flange
(2)
.
A
1
B
7.
Remove the entire compact thermal module
(1)
from
the heat exchanger.
8.
Check the burner and burner insulating mat for dam-
age. (
9.
Check the heat exchanger for damage.
Result:
Heat exchanger damaged
▶
Replace the heat exchanger (
→
"Heat exchanger"
spare parts instructions).
10. Check the heat exchanger for dirt.
Result:
Heat exchanger dirty
▶
Clean the heat exchanger. (
11. Check the insulating mat on the heat exchanger for
damage.
Result:
Insulating mat damaged
▶
Replace the insulating mat (
→
Spare parts instruc-
tions for the heat exchanger insulating mat).
Содержание Compact 24c-AS/1 H-GB
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