20159324
24
GB
Start-up, calibration and operation of the burner
6.1
Notes on safety for the first start-up
6.2
Adjustments prior to ignition
Combustion head adjustment is already described on page 17.
In addition, the following adjustments must also be made:
open the manual valves upstream of the gas train.
Adjust the minimum gas pressure switch to the start of the
scale (Fig. 30).
Adjust the air pressure switch to the start of the scale
(Fig. 29).
Purge the air from the gas line. We recommend using a
plastic tube routed outside the building and to purge air until
gas is smelt.
Fit a U-type pressure gauge (Fig. 25) to the gas pressure
test point on the pipe coupling.
Used to approximately calculate burner maximum output
using the Tab. F on page 20.
Connect two lamps or testers in parallel to the two gas line
solenoid valves VR and VS in order to check the exact
moment at which voltage is supplied.
This operation is not required if each of the two solenoid
valves is equipped with a pilot light that signals voltage
passing through.
6.3
Burner start-up
Turn off the remote controls and set the switch 1)(Fig. 26) to
“MAN”.
As soon as the burner starts, check the direction of rotation of the
fan impeller, looking through the flame inspection window 17)
(Fig. 4 on page 12).
6
Start-up, calibration and operation of the burner
ATTENTION
The first start-up of the burner must be carried out
by qualified personnel, as indicated in this manual
and in compliance with the standards and
regulations of the laws in force.
ATTENTION
Check the correct working of the adjustment,
command and safety devices.
ATTENTION
Before starting up the burner, refer to section
"Safety test - with no gas supply” on page 32.
CAUTION
Before starting up the burner, it is good practice to
adjust the gas train so that ignition takes place in
conditions of maximum safety, i.e. with gas
delivery at the minimum.
Fig. 25
D514
DANGER
Make sure that the lights or testers connected to
the solenoids, or the pilot lights on the solenoids
themselves, indicate that no voltage is present.
If voltage is present, stop the burner immediately
and check the electrical connections.
Fig. 26
D3833
1
2
