Safety Components; Opening The Burner - Riello RS5 Installation, Use And Maintenance Instructions

Gas distributor
Check at regular intervals that the holes of the gas head are not
obstructed. If they are, clean them with a pointed tool as shown
in Fig. 19.
E9252
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 train
Check that the gas train is suited to the burner capacity, the type
of gas used and the mains gas pressure.
Electrode-probe
Checking the proper positioning of the ionisation probe and elec-
trode as shown in Fig. 14 on page 18.
Pressure switches
Check that the air pressure switch and the gas pressure switch
are set correctly.
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.
7.3

Opening the burner

Disconnect the electrical supply from the burner
by means of the main system switch.
DANGER
Close the fuel interception tap.
DANGER
Wait for the components in contact with heat
sources to cool down completely.
If maintenance of the combustion head is required, refer to the in-
structions given in Operating position on page 15.
For accessing to the interior of the burner, loosen the screws that
secure the cover and proceed with the maintenance operation.
20198379
Maintenance
Combustion
If the combustion values measured before starting maintenance
do not comply with applicable legislation or do not indicate effi-
cient combustion, consult the Tab. O on page 24 or contact our
Technical Support Service to implement the necessary adjust-
ments.
Leave the burner working without interruption for about 10 min,
checking the right settings in the 1st and 2nd stage of all the com-
ponents stated in this manual
- Percentage of CO
- CO content (ppm)
- NOx content (ppm)
- Ionisation current (µA)
- Smoke temperature at the flue
7.2.4

Safety components

The safety components must be replaced at the end of their life
cycle indicated in Tab. P. The specified life cycles do not refer to
the warranty terms indicated in the delivery or payment
conditions.
Fig. 19
Safety component
Flame control
Flame sensor
Gas valves (solenoid)
Pressure switches
Pressure adjuster
Servomotor (electronic
cam) (if present)
Oil valve (solenoid) (if
present)
Oil regulator (if present)
Oil pipes/ couplings
(metallic) (if present)
Flexible hoses (if present)
Fan impeller
Operating safety hazards
Repairs to the following components may only be
carried out by the respective manufacturers or by
DANGER
personnel instructed by them:
-
-
-
-
-
Check the operation
- Burner start-up with sequence of the functions
- Ignition device
- Air pressure switch
- Flame monitoring
- Seal test of components to the passage of fuel
After carrying out maintenance, cleaning or
checking operations, reassemble the cover and
all the safety and protection devices of the burner.
26 GB
(%);
2
Life cycle
10 years or 250,000
operation cycles
10 years or 250,000
operation cycles
10 years or 250,000
operation cycles
10 years or 250,000
operation cycles
15 years
10 years or 250,000
operation cycles
10 years or 250,000
operation cycles
10 years or 250,000
operation cycles
10 years
5 years or 30,000 pressurised
cycles
10 years or 500,000 start-ups
fan motor
actuator
air damper servomotor
electromagnetic valves
burner programmer
Tab. P