Adjustment Before First Firing; Burner Starting; Burner Firing - Riello RS 300/E BLU Installation, Use And Maintenance Instructions

(A)
(B)
1
10
ADJUSTMENTS BEFORE FIRST FIRING
Adjustment of the combustion head has been
illustrated on page 8.
In addition, the following adjustments must also
be made:
- open manual valves up-line from the gas
train.
- Adjust the minimum gas pressure switch to
the start of the scale.
- Adjust the maximum gas pressure switch to
the start of the scale.
- Adjust the air pressure switch to the zero
position of the scale.
- Purge the air from the gas line.
Continue to purge the air (we recommend
using a plastic tube routed outside the build-
ing) until gas is smelt.
- Fit a U-type manometer (A) to the gas pres-
sure test point on the sleeve.
The manometer readings are used to calcu-
late MAX. burner power using the table on
page 9.
- Connect two lamps or testers to the two gas
line solenoid valves to check the exact
D3100
moment at which voltage is supplied.
This operation is unnecessary if each of the
two solenoid valves is equipped with a pilot
light that signals voltage passing through.
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.

BURNER STARTING

Close all the triggering and safety devices and
turn selector 1)(B) to "AUTO".
Select MANUAL operating mode on the AZL
display (for further information, consult the LMV
instrument reference handbook, supplied during
D3650
training by the Technical Service Department).
Make sure that the lamps or testers connected
to the solenoids, or pilot lights on the solenoids
themselves, indicate that no voltage is present.
If voltage is present, then immediately stop the
burner and check electrical connections.

BURNER FIRING

Having completed the checks indicated in the
previous heading, the burner should fire. If the
motor starts but the flame does not appear and
the control box goes into lock-out, reset and wait
for a new firing attempt.
If firing is still not achieved, it may be that gas is
not reaching the combustion head within the
safety time period of 3 seconds.
In this case increase gas firing delivery.
The arrival of gas at the sleeve is indicated by
the U-type manometer (A).
Once the burner has fired, now proceed with
global calibration operations.
Once you have completed adjustments, select
AUTOMATIC operating mode on the AZL dis-
play.