92
Maintenance
Maintenance details
The ignition electrode
The ignition electrode (1) is a
consumable part and must be checked
Checking the air pressure
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-
Disconnect the silicon hose on
the + side (P1) of the air pressure
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annually. The electrode must be
renewed, if damages or any wear and
tear is detected. The value of ignition
electrode resistance can be detected
through measurements.
The maximum electrode resistance at
room temperature should not exceed
ȍ
It can be replaced unscrewing it from
the heat exchanger. Remove and
replace the o-ring. Make sure of the
tightness of the connection.
In case electrode damage is detected,
verify the status and eventually replace
the fuse along electrode cable.
In order to ensure continued good
and safe operation of the boiler
ignition electrode should be replaced
every 2 years.
The detection electrode.
The detection electrode (2) is a
consumable part and must be checked
annually. The electrode must be
renewed, if damages or any wear and
tear is detected, but certainly every 4
years. Furthermore, the value of the
ionization current can be detected
through measurements. Under full load
operations, the minimum ionization
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It can be replaced unscrewing it from
the heat exchanger. Remove and
replace the o-ring. Make sure of the
tightness of the connection.
Sight glass
If the sight glass (3) is damaged, it can
be replaced unscrewing it from the
heat exchanger. Remove and replace
the gasket. Make sure the gasket is in
correct position and the connection of
new glass is tight.
Assembly is done in reverse order.
2
1
3
P
1
(+)
P
2
(-)
(+)
1
3
2
4
5
6
- Take a large plastic syringe or
bellows and connect a T piece with
a hose connected (2).
-
Connect the + side of the air-
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end of the T piece with a hose (3).
-
On the other end of the T piece,
connect the + side of a pressure
gauge (4).
- Turn on the boiler.
- Push the syringe or bellows in very
slowly until the boiler goes into
failure mode (5).
- Make a note of the pressure
indicated by the pressure gauge
at that point. A switch pressure of
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A lower or higher switch pressure
indicates a problem with the air
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- After taking a measurement, detach
the silicon hose from the T piece on
the + side and reconnect the hose
that was previously removed.
CAUTION:
Please note: The + side (P1) is the rear
connector nipple of the air pressure
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- Remove any soiling from all
connection points for hoses and the
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- Check the condition and tightness
of the hoses of the air pressure
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hoses if necessary.
