Combustion Head Setting; Air Damper Adjustment; Fuel Heating; Burner Start-Up Cycle - Riello RG1R Instructions Pour L'installation, L'utilisation Et L'entretien

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4.5 COMBUSTION HEAD SETTING

It depends on the output of the burner and is carried out by rotating clockwise or counterclockwise the setting
screw (5) until the set-point marked on the regulating rod (9) is level with the outside plane of the nozzle-holder
assembly (1).
In the sketch the combustion head is set for an output of 0.85 GPH at 12 bar.
The set-point 3 of the regulating rod (9) is at the same level with the outside plane of the nozzle-holder assem-
bly (1) as shown in the schedule.

4.6 AIR DAMPER ADJUSTMENT

To vary the setting adjust the screw (7) after loosing the nut (8).
When burner shuts down the air damper automatically closes till a max. chimney depressure of 0.5 mbar.

4.7 FUEL HEATING

In order to assure regular ignition and working also at low temperature the burner has an oil pre-heater
fitted in combustion head. The pre-heater starts when thermostats close.
When the required temperature for ignition is reached the thermostat fitted on the nozzle holder starts the
burner. The pre heater remains energised during working and cuts out when burner shuts-down.

4.8 BURNER START-UP CYCLE

Normal
Thermostat
Heating
Motor
Ignition transformer
Valve
Flame
Lock-out lamp
0
C
Lock out is indicated by a lamp on the control box (3, fig. 1, page 1).
5.

MAINTENANCE

The burner requires periodic maintenance carried out by a qualified and authorised technician in conformity
with legislation and local
Maintenance is essential for the reliability of the burner, avoiding the excessive consumption of fuel and
consequent pollution.
Before carrying out any cleaning or control always first switch off the electrical supply to the
burner acting on the main switch of the system.
THE BASIC CHECKS ARE:
Check that there are not obstructions or dents in the supply or return oil pipes.
Clean the filter in the oil suction line and in the pump.
Clean the photoresistance, (7, fig. 1, page 1).
Check for correct fuel consumption.
Replace the nozzle (see fig. 10, page 6) and check the correct position of electrodes (fig. 12, page 7).
Clean the combustion head in the fuel exit area, on the diffuser disc.
Leave the burner working without interruptions for 10 min. and set rightly all the components stated in
this manual. Then carry out a combustion check verifying:
Smoke temperature at the chimney;
Smoke value according to opacity smokes index according to Bacharach scale.
2304
(see fig. 11, page 7)
(see fig. 11, page 7)
~
150s
12s
standards.
Lock-out due to failure to light
0
Content of CO
( % );
2
8
GB
~
150s
12s
5s
Content of CO (ppm);
C
D5023

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