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7.2
Servicing the burner module
7.2.1
Removing the burner module
The burner module consists of the burner, fan, gas valve
and the gas supply (mixer tube). These four components
make up the complete assembly, the burner module.
a
Danger!
Risk of being burned or scalded by hot
components!
There is danger of being burned or scalded at
the burner module and at all water-carrying
components.
> Only carry out work on these components
if they have cooled down.
Proceed as follows to remove it:
> Turn off the boiler
> Isolate the electrical supply to the boiler.
> Remove boiler bottom cover by releasing the two
spring retaining lugs and lowering the rear of the bot-
tom cover.
> Gently pull the bottom cover backwards to remove
from the appliance.
> Turn off the gas service valve.
> Turn off the boiler CH service valves.
> Loosen screw, release the front case spring retaining
clips located beneath the front edge of the appliance.
> Remove the front casing by easing forward the bot-
tom edge and gently lifting.
> Lower electronic control box.
Instructions for installation and servicing ecoTEC 839592_13
Inspection and maintenance
1
2
3
Fig. 7.2 Dismantling air intake pipe
> Remove screw (2) and remove the air intake pipe (1).
> Disconnect the gas supply (3) on the gas valve.
Ensure the corrugated gas pipe does not twist by
holding the flattened section of the pipe, with an open
ended spanner, whilst loosening the union nut.
b
Caution!
Risk of damage to the gas pipe!
The corrugated gas pipe may become dam-
aged.
> Do not suspend the burner module on the
flexible corrugated gas pipe.
> Do not suspend any loads from the corru-
gated gas pipe.
7
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