9 Inspection and maintenance
24
Installation and maintenance instructions ecoCRAFT exclusive 0020149561_01
9.5
Removing the burner assembly
Danger!
Risk of being burned or scalded by hot
components!
The burner assembly and all water-carry-
ing components present a risk of burns and
scalding.
▶
Only carry out work on these components
once they have cooled down.
1.
Swing the electronics box down.
9
1
6
2
3
5
8
4
7
2.
Remove the connection cables from the gas valve as-
sembly
(4)
and from the fan
(1)
.
3.
Remove the earth wire
(8)
.
4.
Remove the plug from the ignition electrode
(7)
and
from the monitoring electrode
(6)
.
5.
Remove the control hoses
(3)
from the gas valve as-
sembly and the Venturi.
6.
Remove the four screws
(2)
between the Venturi and
supply-air silencer or high-temperature polypropylene
pipe.
7.
Carefully put down the supply-air silencer with 87° high-
temperature polypropylene elbow.
8.
Remove the four M5 screws
(5)
from the gas pipe (gas
filter) or from the gas valve assembly.
9.
Remove the four M8 nuts
(9)
from the heat exchanger.
10. Pull the entire unit, comprising burner flange, gas valve
assembly, fan and Venturi, forwards to remove it, and
put it down carefully.
11. Remove the seal between the heat exchanger and
burner flange.
12. Carefully pull the burner forwards to remove it.
13. Check the components of the burner assembly and the
heat exchanger for damage and dirt.
14. If necessary, clean or replace the components in ac-
cordance with the following sections.
9.6
Cleaning the combustion chamber
1.
Protect the electronics box from splashed water.
2.
Use water and a cleaning brush to clean the combus-
tion chamber.
3.
Use water to rinse off the dirt that has softened up.
◁
The water drains out via the flue gas collector and
the condensate discharge pipe.
9.7
Cleaning the burner
1.
Remove the burner assembly. (
→
Page 24)
2.
Do not use any pointed or sharp objects for cleaning in
order to avoid damaging the surface of the burner.
3.
Blow out the burner outside the installation room from
outside to inside using compressed air. If no com-
pressed air is available, you can also rinse the burner
out with water as an alternative. Replace the burner if it
is particularly dirty.
4.
Install the burner assembly. (
→
Page 24)
9.8
Installing the burner assembly
Danger!
Risk of death caused by escaping flue
gas!
A defective combustion chamber seal may
impair the operational safety of the product
and lead to personal injury and material dam-
age.
▶
Replace the combustion chamber seal
after any inspection and maintenance
work.
