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4.
OPERATION
4.1
CHOICE OF NOZZLES
Recommended nozzles:
- Monarch F 80 H0.
4.2
PUMP PRESSURE
Recommended pressure:
- Fluid oil: 20 bar
- Heavy oil: 25 bar
The flow rates of the nozzles indicated on the table are
nominal and refer to a light oil having viscosity from 3 to 5°E
at 50° C pre-heated to 100°C. The actual flow rate may vary
by ± 5% against the rated one.
If flowrate values between those in the table are required, the
pump pressure may be varied or the nozzles arranged
differently.
The pump leaves the factory set at 20 bar.
4.3
COMBUSTION HEAD ADJUSTMENT
Turn the screw A, fig. 2 till the set-point, shown in the diagram,
is in line with the level of the sleeve B, fig. 2.
Fig. 2
D2637
4.4
ADJUSTMENT OF THE AIR DAMPER MOTOR
PARK - Blue lever
This lever leaves the factory vertically positioned and corre-
sponds to the air damper completely closed.
A partial opening of the air damper might be obtained by mov-
ing 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
stage.
st
1
STAGE - Orange lever
The orange lever controls the air damper position for the first
flame, it is adjustable on both opening and closing.
nd
2
STAGE - Red and black levers
The red lever controls the air damper position for the second
flame, it is adjustable on both closing and opening.
The black lever controls the opening of the second oil valve
and it must always be slightly earlier than the red lever, but
never the first stage orange one.
6201
B
Set-point 4
A
6
Nozzle
GPH (45° - 60°)
1.50 + 1.50
1.75 + 1.75
2.00 + 2.00
2.25 + 2.25
2.50 + 2.50
3.00 + 3.00
3.50 + 3.50
3.50 + 4.00
kg/h
Black lever
Red lever
st
Orange lever
Blue lever
Opening +
GB
20 bar
25 bar
kg/h
kg/h
18.00
20.30
21.00
23.80
24.00
27.10
27.00
30.50
30.00
34.00
36.00
40.60
42.00
–
45.00
–
D2677
Set-points
D2638
– Closure
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