Recirculating Pipe Adjustment; Air Damper Adjustment; Pump Pressure And Air Output - Sime R 2000 Manuel D'entretien

TURN TO THE RIGHT: (sign +)
In order to increase the volume of air entering the
combustion chamber and thus diminishing its pres-
sure. There is a reduction of CO 2 and the adhesion
of the flame to the air diffuser disc improves.
(Setting advisable for ignitions at low temperatures).
TURN TO THE LEFT: (sign –)
In order to reduce the volume of air entering the
combustion chamber and thus increasing its pres-
sure. The CO 2 improves and the adhesion of the
flame to the diffuser tends to reduce.
(This setting is not advisable for ignitions at low
temperatures).
In any case do not bring the combustion head set-
ting more than one point away from that indicated
in the schedule. One set-point corresponds to 3
turns of the rod; a hole (3) at its end facilitates
counting the number of turns.

4.6 RECIRCULATING PIPE ADJUSTMENT,

The burner leaves the factory with the recirculating pipe in the Position 2.
If necessary, in order to optimise the combustion, place the flame tube according to the combustion head
as indicated in the table. It is important that the combustion chamber is enough large for the flue gases re-
circulation. (Pay attention to the thickness of the boiler door). By generally reducing the smoke recirculating
section (RF), the combustion stability is increased, but emissions of NOx are also increased.

4.7 AIR DAMPER ADJUSTMENT

The settings, indicated in the table, refer to the burner with its cover fitted and combustion chamber with
depression zero. These regulations are purely indicative.
Each installation however, has its own unpredictable working conditions: actual nozzle output; positive or
negative pressure in the combustion-chamber, the need of excess air, etc.
All these conditions may require a different air-damper setting.
It is important to take account of the fact that the air output of the fan differs according to whether
the burner has its cover fitted or not. Therefore we recommended to proceed as follows:
Adjust the air damper as indicated in the schedule of page 6.
Place the cover on the burner and screw the fixing screw.
Check smoke number and CO
Should it become necessary to modify the air output, remove the cover by loosening the screw, adjust
the air damper, remount the cover and finally recheck the smoke number.

4.8 PUMP PRESSURE AND AIR OUTPUT,

(see figs. 18 and 19)
The burner is provided with an hydraulic device controlled
by the electronic start delaying device which reduces to
approx. 70 % the max. output of light oil and air.
st
1 STAGE ADJUSTMENT
Adjustment of air shutter
Unloosen the nut (2), turn the screw (3) until the air shutter
(1) reaches the position desired. Then lock the nut (2).
Pressure regulation
This is set at 9 bar at the factory.
Should such pressure be reset or changed, just turn the
screw (4). The pressure gauge must be mounted in place
of cap (5).
2900
Supplied By www.heating spares.co Tel. 0161 620 6677
Position
(see fig. 17)
.
2
8
GB
Fig. 17
RF
2 3
D4499
Pos. A
1
1 278
2 287
3 296
Fig. 18
S7353