6202
6
GB
4.
OPERATION
4.1
CHOICE OF NOZZLES
Recommended nozzle:
- Monarch F 80 H0.
4.2
PUMP PRESSURE
Recommended pressure:
- Light oil: 20 bar
- Heavy oil: 25 bar
The flow rate of the nozzes indicated in the table are
nominal, obtained for a light oil having viscosity from 3 to 5°E
at 50° C pre-heated at 100°C. The actual flow rate may vary
by ± 5% against the rated flow rate.
if flow rate values between those indicated in the table are
required, it is possible to vary the pump pressure or arrange
the nozzles differently.
The pump leaves the factory set at 20 bar.
4.3
COMBUSTION HEAD ADJUSTMENT
Turn the screw
A,
fig. 2
to the set-point, shown in the diagram,
lines up with sleeve
B,
fig. 2.
4.4
ADJUSTMENT OF THE AIR DAMPER MOTOR
STOP - Blue lever
This lever leaves the factory vertically positioned and corre-
sponds to the complete closure of the air damper.
A partial opening of the air damper might be obtained by
moving this lever leftwards (
+
on the plate).
The new position of the air damper is detectable when the
burner is off.
Do not exceed the position of the orange lever for the 1
st
stage.
1
st
STAGE - Orange lever
The orange lever controls the air damper position for the first
flame, it is adjustable both for opening and closing.
2
nd
STAGE - Red and black levers
The red lever controls the air damper position for the second
flame, it is adjustable both for closing and opening.
The black lever controls the opening of the second oil valve
and it must always anticipate - for a bit - the red lever, but
never the orange one.
D2638
Black lever
Red lever
Orange lever
Blue lever
Opening
+
–
Closure
Nozzle
GPH (45° - 60°)
20 bar
kg/h
25 bar
kg/h
2.50 + 2.50
30.00
34.00
3.00 + 3.00
36.00
40,60
3.50 + 3.50
42.00
47,40
4.00 + 4.00
48.00
54,20
4.50 + 4.50
54.00
61.00
5.00 + 5.00
60.00
–
kg/h
Set-point
D2693
D2637
B
Set-point 4
A
Fig. 2
