Table of Contents
Advertisement
5.6
Burner shut down
Switch off power supply. If burner is switched off for extended pe-
riods, close manual gas cocks.
5.7
Gas valve adjustment
The adjustment of the output of gas is achieved by using the two
screws V1 and V2.
To alter the maximum output of gas use screw V1:
to increase the output: turn the screw anticlockwise (unscrew);
to reduce the output: turn the screw clockwise (tighten).
5.8
Burner adjustment
The optimum adjustment of the burner requires an analysis of flue
gases at the generator outlet. In conformity with the US and Cana-
dian requirements, the burner application at the generator, the ad-
justment and the testing must be carried out in compliance with the
instruction manual of the generator itself, including the control of
the CO and CO
concentration in the flue gases and of their tem-
2
perature (See Tab. F at page 12).
Check in sequence:
–
max output
–
min output
–
ignition output
MAX output should match the value required by the boiler that is
used. To increase or decrease its value, adjust the trimmer MAX lo-
cated on the control box. Measure the gas delivery on the meter to
precisely establish the burnt output.
Using a combustion analyser, measure the value of the CO
O
in order to optimise the burner calibration.
2
The correct values are: CO
2
To correct these values act on the gas valve in the following way:
to increase the gas delivery and the CO
anticlockwise (unscrew);
to reduce the gas delivery and the CO
clockwise (tighten).
MIN output should match the value required by the boiler that is
used. To increase or decrease its value, adjust the trimmer MIN lo-
cated on the control box.
Measure the gas delivery on the meter to precisely establish the
burnt output.
Using a combustion analyser, measure the value of the CO
O
in order to optimise the burner calibration.
2
The correct values are: CO
2
To correct these values act on the gas valve in the following way:
to increase the gas delivery and the CO
clockwise (tighten);
20062175
Start-up, calibration and operation of the burner
8.2 - 9%.
: turn the screw V1
2
: turn the screw V1
2
7.8 - 8.5%.
: turn the screw V2
2
A vent shut off system shall be applied to a baro-
metric damper installed in the venting system at the
time of conversion of the appliance.
WARNING
This will electrically disconnect the burner should
there be a blockage in the vent (chimney).
The installer must identify the main electrical power
switch and manual gas shut off valve, for emergen-
cy conditions. The burner cover must be in place
and secured before the burner is placed in opera-
tion.
To alter the minimum output of gas act on the screw V2 on the gas
valve.
Remove the protection screw and act on the intern screws with a
hex key:
to increase the output: turn the screw clockwise (tighten);
to reduce the output: turn the screw anticlockwise (unscrew).
to reduce the gas delivery and the CO
anticlockwise (unscrew).
5.8.1
Optimum calibration values
CO
Methane
LPG
or the
2
D9714
or the
2
32
GB
: turn the screw V2
2
MIN output
(%)
O
(%)
CO
2
2
2
8
6.6
8.5
9.5
6.4
10
MAX output
(%)
O
(%)
2
5.7
5.6
Tab. P
Fig. 28
Advertisement
Table of Contents
