57
5/16” +/-1/32” (8mm +/-1mm)
flame
ignition electrode
flame sensor
electrode/ionization
sensor
5/16” +/-1/32” (8mm +/-1mm)
9
WARNING:
Do not rub the electrode with sandpaper.
MANDATORY:
I
n order to prevent potential malfunctions, during
annual maintenance, check the flame sensor for deterioration and,
at the slightest sign of deterioration,
replace it.
The geometry of the wire, the absence of alumina deposit, as well
as the quality of the insulation and of the gaskets must be checked.
-
Remove the electrode by unscrewing the two fixing screws.
-
Clean the gasket supporting surface.
-
Reassemble the electrode by using a new gasket.
CAUTION:
Take care not to damage the burner door insulation.
-
Fix the electrode by screwing its screws with a torque wrench
at 2.5Nm.
-
Check the position of the electrode against the burner, as well
as the distance
of the flame sensor wires (refer to the picture).
-
Adjust the electrode gap if necessary.
12 .4 .2 Gas valve
The gas valve is a safety and adjustment device which oversees
the correct operation of the product.
9
WARNING:
In order to maintain the technical characteristics of
the device and full efficiency, it is recommended to
replace it
every 10 years
.
When replacing the gas valve, ensure the injector located at the top
of the gas valve being replaced is removed and correctly inserted
into the new gas valve.
Check that the O-ring on the injector is not worn or failed and, if
necessary, replace the injector.
Failure to do so may result in substantial property damage, severe
personal injury or death.
12 .4 .3 Burner
Check the condition of the burner, carefully clean it with a soft
brush if necessary. Do not use a brush with metallic bristles as this
might damage it.
If there is dirt remaining inside the burner, blow it out with
compressed
air.
12 .4 .4 Burner door
MANDATORY:
Check the insulation pa
nel and, if it is worn and in
case of a rise of the condensates in the heat exchanger, it must be
replaced.
Material characteristics do not require individual protection devices
but, for safety, we recommend the use of a protective mask, gloves
and glasses.
9
WARNING:
The insulation panel is maintained by silicone glue.
−
Remove the electrodes.
−
Remove the insulation by sliding under its periphery a thin tool
to loosen and remove it.
−
Remove and clean the residues of the insulation and silicone
glue.
−
Put two points of glue silicone temperature-resistant (Loctite
5366 or Ottoseal S17) on the plate of the door.
−
Engage the insulation and place it in contact with the two points
of glue silicone.
−
Make sure that the burner is in proper condition, remove any
possible insulation residues on the burner blowing them out with
compressed air.
−
MANDATORY:
Replace the electrodes by using new gaskets.
−
MANDATORY:
Check the burner door gasket and, if it is worn,
it must be replaced. Anyway,
regardless of deterioration,
replace it as indicated in the paragraph “12 .3
Maintenance program” .
−
MANDATORY:
Check the high temperature glass braided rope
and, if it is worn, it must be replaced. The high temp braided
rope is maintained by silicone glue.
−
Remove the braided rope by sliding a thin tool under it to loosen
and remove it.
CAUTION:
Take care not to damage the burner door insulation.
−
Remove and clean the residues of the braids and silicone glue.
−
Put a thin string of silicon temperature resistant glue (Loctite
5366, Ottoseal S17 or equivalent) in the seal housing.
−
Engage the high temperature braided rope and place it in
contact of the glue and press the braids.
−
MANDATORY:
Check the flame ignition electrode deterioration
and, if it is worn, replace it.
−
The geometry of the wire, the absence of alumina deposit, as
well as the quality of the insulation and of the gaskets must be
checked.
−
Remove the electrode by unscrewing the two fixing screws.
−
Clean the gasket supporting surface.
−
Reassemble the electrode by using a new gasket.
CAUTION:
Take care not to damage the burner door insulation.
−
Fix the electrode by screwing its screws with a torque wrench
at 2.5Nm.
−
Check the position of the electrode against the burner, as well as
the distance of the ignition electrode wires (refer to the picture).
−
Adjust the electrode gap if necessary.
Reassemble the burner door set on the heat exchanger respecting
a torque wrench of the four nuts at 5Nm.
12 .4 .5 Heat exchanger
MANDATORY:
Check that combustion chamber is free of deposits
and, proceed to clean.
9
WARNING:
BEFORE OF CLEANING, remove the siphon
connection pipe from the condensate drain connection of the
exchanger an
d connect a temporary collection pipe to it.
-
Vacuum the combustion residues.
-
Clean with a nylon brush.
9
WARNING:
Use nylon brush only. DO NOT use metallic brush,
which can damage the heat exchanger.
−
Vacuum the remaining residues.
−
Rinse with mains water.
