Riello 852T4 - Safety Components; Opening and Closing the Burner

53
20151763
GB
Maintenance
Boiler
Clean the boiler as indicated in its accompanying instructions in
order to maintain all the original combustion characteristics in-
tact, especially the flue gas temperature and combustion cham-
ber pressure.
Gas leaks
Make sure that there are no gas leaks on the pipe between the
gas meter and the burner.
Gas filter
Change the gas filter when it is dirty.
Measuring circuit for measuring the current detector
The minimum current necessary for the control box operation is
1 µA. The burner normally supplies a higher current value, so that
no check is needed.
Anyway, if you want to measure the ionisation current, you need
to open the connector (CN1) fitted on the red wire and insert a mi-
croammeter.
Flame control
Displayed value:
MIN 1 µA = 20%
MAX 40 µA = 100%
Key (Fig. 164)
C Electrolytic capacitor 100...470 µF; DC 10...25 V
ION Ionisation probe
M Microammeter Ri max. 5,000 
Combustion
In case the combustion values found at the beginning of the inter-
vention do not respect the standards in force or, in any case, do
not correspond to a proper combustion, contact the Technical As-
sistance Service in order to carry out the necessary adjustments.
Tab. S
8.2.4 Safety components
The safety components must be replaced at the end of their life
cycle indicated in . The specified life cycles do not refer to the
warranty terms indicated in the delivery or payment conditions.
Tab. T
8.3 Opening and closing the burner
WARNING
This display is possible only in operating mode or
in stand-by!
LME7...
M
C
ION
X10-05/2
X10-05/1
S8615
Fig. 164
MIN output MAX output
CO
2
(%) O
2
(%) CO
2
(%) O
2
(%)
Methane 8 6.6 8.5 5.7
LPG 9.5 6.4 10 5.6
G25 7.8 6.8 8.3 5.8
Safety component Life cycle
Flame control
10 years or 250,000
operation cycles
Flame sensor
10 years or 250,000
operation cycles
Gas valves (solenoid)
10 years or 250,000
operation cycles
Pressure switches
10 years or 250,000
operation cycles
Pressure adjuster 15 years
Servomotor (electronic
cam) (if present)
10 years or 250,000
operation cycles
Oil valve (solenoid) (if
present)
10 years or 250,000
operation cycles
Oil regulator (if present)
10 years or 250,000
operation cycles
Oil pipes/ couplings
(metallic) (if present)
10 years
Flexible hoses (if present)
5 years or 30,000 pressurised
cycles
Fan impeller 10 years or 500,000 start-ups
DANGER
Turn off the burner's power supply using the main
system switch.
DANGER
Turn off the fuel interception tap.
Wait for the components in contact with heat
sources to cool down completely.
After carrying out maintenance, cleaning or
checking operations, reassemble the cover and
all the safety and protection devices of the burner.