Safety Components - Riello DB 2 LSE FGR Installation, Use And Maintenance Instructions

Voltage on the flame sensor
Minimum value for correct operation: 3.5V DC (value on AZL dis-
play at about 50%).
If the value is lower, it could be due to:
– sensor not positioned correctly;
– low voltage (lower than 187V);
– bad regulation of the burner.
In order to measure, use a voltmeter with a 10V DC scale con-
nected as in the diagram (Fig. 35).
D9174
OIL OPERATION
Filters
Check the filtering baskets on line and at nozzle present in the
system.
Clean or replace if necessary.
If rust or other impurities are observed inside the pump, use a
separate pump to lift any water and other impurities that may
have deposited on the bottom of the tank.
Nozzles
It is advisable to replace nozzles once a year during periodical
maintenance.
Do not clean the nozzle openings.
Hoses
Check that these are in good conditions.
Fuel tank
Approximately every 5 years, suck any water on the bottom of the
tank using a separate pump.
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.
EN 267
CO
Theoretical max CO
2
0 % O
2
15.2
20169116
+
0...10 V
Ri > 10 M
Air excess
Max. output. Min. output
 1.2  1.3
% Calibration
CO
2
mg/kWh
 = 1.2  = 1.3
 100
12.6 11.5
Maintenance
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.
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
LMV...
not correspond to a proper combustion, contact the Technical As-
X10-02 / 6
sistance Service in order to carry out the necessary adjustments.
X10-02 / 4
X10-02 / 2
EN 676
Fig. 35
Theoretical max
GAS CO
0 % O
G 20 11.7
G 25 11.5
G 30 14.0
G 31 13.7
6.2.4

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.
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)
Tab. N
Flexible hoses (if present)
Fan impeller
32 GB
GAS OPERATION
Air excess
Max. output.
 1.2
CO % Calibration
2
2
 = 1.2  = 1.3
2
9.7 9.0
9.5 8.8
11.6 10.7
11.4 10.5
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
10 years or 500,000 start-ups
Min. output
 1.3
CO
mg/kWh
 100
 100
 100
 100
Tab. O
cycles
Tab. P