Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Adjustments Prior To Ignition; Burner Start-Up - Riello GAS 3 P/M 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
regulations of the laws in force.
ATTENTION
Check the correct working of the adjustment,
command and safety devices.
ATTENTION
6.2

Adjustments prior to ignition

Combustion head adjustment is already described on pag. 20.
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. 32 a pag. 33).
 Adjust the maximum gas pressure switch to the end of the
scale (Fig. 31 a pag. 32).
 Adjust the air pressure switch to the start of the scale
(Fig. 30 a pag. 32).
 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. 24) to the gas pressure
test point on the pipe coupling.
 Used to approximately calculate the MAX burner output
(Tab. H).
 Connect two lights or testers in parallel to the two gas line
solenoid valves VR and VS in order to check the exact
moment at which voltage arrives. 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

Close remote controls.
As soon as the burner starts, check the direction of rotation of the
motor. Check that the lamps or testers connected to the solenoid
6.4

Burner ignition

In the case that the motor starts but the flame does not appear
and the control box locks out, unlock it and wait for a new starting
attempt.
If ignition 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 ignition flow rate.
The arrival of gas to the sleeve is indicated by the U-type
pressure gauge (Fig. 24).
Once ignition has taken place, proceed with burner global
calibration operations.
Once ignition has taken place, proceed with burner global
calibration operations.
Start-up, calibration and operation of the burner
Before starting up the burner, refer to section
"Safety test - with no gas supply" a pag. 36.
ATTENTION
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.
CAUTION
valves, or the pilot lights on the solenoid valves, indicate that no
voltage is present. If they indicate the presence of voltage, stop
the burner immediately and check the electric connections.
27 GB
D1099
Fig. 24
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