Enertech Bentone STG 146, Инструкция по установке и обслуживанию, Страница: 19 / 32

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 flue gas tempe-
ratures, average water temperature and
CO
2
or O
2
concentration
GENERAL INSTRUCTIONS
The installation of the gas burner must
be carried out in accordance with cur-
rent regulations and standards. The
installers of gas burners should therfo-
re be acquainted with all regulations
and ensure that the installation comp-
lies with the requirements. The instal-
lation, mounting and adjustment should
be made with the greatest care and
only the correct gas should be used.
OPERATING INSTRUCTIONS
The operating instructions accompa-
nying the burner should be left in a
prominent position in the boiler room.
INSTRUCTIONS
The user should be thoroughly instruc-
ted in the function of the gas burner and
the whole installation. The supplier
must instruct the user.
INSPECTION AND MAINTENANCE
Daily inspection is advisable.
SERVICE
Service should only be carried out by
qualified personell. Replacement parts
should be of the same make and appro-
ved by the same authorities as the
original. If the burner is converted to fire
another gas quality it must be re-
commissioned. If town gas is to be
fired 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).
START UP
After the burner has been fitted 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.
Hower, study the sections dealing with
adjustments of multi-bloc, combu-
stion air and combustion head.
172 305 52 05-01
GENERAL INSTRUCTIONS
Open the ball valve and switch on the
main switch. If the burner starts the
actual adjustment can be made.
AIR ADJUSTMENT
On all burners the air adjustment can
be made with or without the cover
fitted. Final fine adjustment must be
made with the cover on.
ADJUSTMENT OF BURNER HEAD
The burners are equipped with an ad-
justment device changing the position
of the brake plate in the burner head.
This is used to adjust the correct pres-
sure drop over the combustion device
and thereby 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 capaci-
ty the smaller the opening between
brake plate and combustion device.
ADJUSTMENT OF BRAKE PLATE
- Turn by means of an allen key the
screw in the desired direction.
STG120/1, STG120/2, STG146/1
- To reduce the opening: turn the
screw to the left.
- To increase the opening: turn the
screw to the right.
STG146/2
- To reduce the opening: turn the
screw to the right.
- To increase the opening: turn the
screw to the left.
Gas quality CO
2
% 0
2
% max CO
2
%
lambda 1,2
Natural gas 10,0 3,5 11,9
LPG 11,5 3,5 13,9
The adjustment of the position of the
brake plate affects the air flow. It is
therefore always necessary to make a
fine adjustment of the air by means of
the adjustment device of the burner.
CONTROL OF BURNER HEAD
To check the burner head, brake plate
and electrodes proceed as follows:
Remove the cover. Loosen the union
nut between inner assembly and multi-
bloc. Loosen the burner from the flange
and withdraw the burner from the boi-
ler. If it is necessary to remove the
burner tube, loosen the two allen
screws, turn and withdraw the burner
tube.
COMMISSIONING OF INSTALLA-
TION
Control of the combustion. The com-
bustion quality is checked by means of
a flue gas analysis device. Adjust the
burner to appr. 20% excess air in
accordance with the table. Check the
flue gas temperature. Calculate the
efficiency. Check also the actual gas
volume on the gas meter so that the
correct input is achieved.