General Instructions; Adjustment Of Burner; Service - Bentone BG550 Series Installation And Maintenance Instruction

General

11. General Instructions

11.1

Adjustment of burner

The burner is from the factory pre-set to an average
value that must then be adjusted to the boiler in
question. All burner adjustments must be made in
accordance with boiler manu-facturers instructions.
These must include the checking of lue gas
temperatures, average water temperature and CO2 or
O2 concentration.
General instructions
The installation of the gas burner must be carried out in
accordance with current regulations and standards. The
installers of gas burners should therefore be acquainted
with all regulations and ensure that the installation
complies with the requirements. The installation,
mounting and adjustment should be made with the
greatest care and only the correct gas should be used..
Operating instructions
The operating instructions accompanying the burner
should be left in a prominent position in the boiler room.
Instructions
The user should be thoroughly in-structed in the function
of the gas burner and the whole installation. The supplier
must instruct the user.
Inspection and maintenance
Daily inspection is advisable.
Start up
After the burner has been itted to the boiler and the electric
connection, the leakage control, the venting and the electric
function test have been carried out, the burner will be ready
for start-up.
Howerer, study the sections dealing with adjustments
of multi-bloc, combustion air and combustion head.
Open the ball valve and switch on the main switch. If the
burner starts the actual adjustment can be made.
Gas quality
Natural gas
LPG
Bentone BG550/650
40
CO % 0 %
2 2
lambda 1,2
10,0 3,5
11,5 3,5
Adjustment of burner head
The burner is equipped with an adjustment device
changing the position of the brake plate in the burner
head. This is used to adjust the correct pressure drop
over the combustion device in order to obtain a good
pulsation free combustion.
Which position to use depends on input and
overpressure in the boiler. A general rule is that the lower
capacity the smaller the opening between brake plate
and combustion device.
Commissioning of installation
Control of the combustion. The combustion quality is
checked by means of a lue gas analysis device. Adjust
the burner to appr. 20% excess air in accordance with
the table. Check the lue gas temperature. Calculate the
eficiency. Check also the actual gas volume on the gas
meter so that the correct input is achieved.
11.2

Service

Service should only be carried out by qualiied personnel.
Replacement parts should be of the same make and
approved by the same authorities as the original. If the
burner is converted to ire another gas quality it must
be re-commissioned. If town gas is to be ired the
combustion head must be converted and the gas train
adjusted to suit (e.g.a larger gas armature or a different
spring in the governor may be required).
max. CO %
2
11,9
13,9