Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Adjustments Prior To Ignition; Servomotor Adjustment - Riello 20074141 Installation, Use And Maintenance Instructions

6

Start-up, calibration and operation of the burner

6.1

Notes on safety for the first start-up

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 regula-
tions of the laws in force.
WARNING
6.2

Adjustments prior to ignition

Combustion head adjustment is already described on page 22.
In addition, the following adjustments must also be made:
➤ Open manual valves upline from the gas train.
➤ Adjust the minimum gas pressure switch to the start of the
scale.
➤ Adjust the maximum gas pressure switch to the end of the
scale.
➤ Adjust the air pressure switch to the start of the scale.
➤ Purge the air from the gas line.
We recommend using a plastic tube routed outside the build-
ing and to purge air until gas is smelt.
➤ Fit a U-type pressure gauge or a differential pressure gauge
(Fig. 27), with socket (+) on the gas pressure of the pipe
coupling and (-) in the combustion chamber.
The manometer readings are used to calculate MAX burner
output using the Tab. K.
➤ Connect two lamps or testers to the two gas line solenoids to
check the exact moment in which voltage is supplied. This
operation is unnecessary if each of the two solenoids is
equipped with a pilot light that signals voltage passing
through.
6.3

Servomotor adjustment

The servomotor (Fig. 28) provides simultaneous adjustment for
the air damper, by means of the adjustable profile cam and the
gas butterfly valve. Completes a rotation of 90° in 30 s.
After the adjustment made in the factory to its 6 cams to allow an
initial ignition. Check that they are as shown below. In the event
of a modification, follow what is described below for each cam:
Cam I (RED): 90° (The same for all models)
Limits the rotation towards the maximum.
In the event of a variation, absolutely do not adjust
beyond 90°.
WARNING
Cam II (BLUE): 0° (The same for all models)
Limits the rotation towards the minimum.
With the burner off the air damper and the gas
butterfly valve should be closed: 0°
It is recommended that no adjustments are
made.
Cam III (ORANGE): (See Tab. L
Adjusts the ignition position and MIN. output
Cam IV-V-VI (YELLOW/BLACK/GREEN):
Do not use, they have no effect on the operation
of the burner.
20080128
Start-up, calibration and operation of the burner
Check the correct working of the adjustment, com-
mand and safety devices.
WARNING
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 deliv-
ery at the minimum.
CAUTION
20071253
CALIBRA-
RS 310/M RS 410/M RS 510/M RS 610/M
TION
CAM 3
(ORANGE)
20074577
28
GB
5° 5° 5°
Fig. 27
15°
Tab. L
Fig. 28