6192
6
GB
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
Rated deliveries of the nozzles are indicated on the above
list and refer to a light oil (viscosity from 3 to 5°E at 50° C pre-
heated at 100°C). The actual flow rate may vary by ± 5%
compared with the rated flow rate.
In values in between those indicated in the tables are
required, the pump pressure could be changed or the
composition of the nozzles varied.
The pump leaves the factory set at 20 bar.
4.3
COMBUSTION HEAD ADJUSTMENT
Turn the screw
A,
fig. 2
till the set-point, detected from the dia-
gram, is in the line with the washer
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 air damper fully closed.
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 stops.
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 on closing and opening.
The black lever controls the opening of the second oil valve
and it must always be slightly before the red lever, but never
the first stage orange one.
Nozzle
GPH (45° - 60°)
20 bar
kg/h
25 bar
kg/h
1.25 + 1.25
15.00
17.00
1.50 + 1.50
18.00
20.30
1.75 + 1.75
21.00
23.80
2.00 + 2.00
24.00
27.10
2.25 + 2.25
27.00
30.50
2.50 + 2.50
30.00
–
D2638
Black lever
Red lever
Orange lever
Blue lever
Opening
+
–
Closing
kg/h
Set-points
D2636
D2637
B
Set-point 4
A
Fig. 2
