47
Installation instructions
3.22 - ADJUSTING THE BURNER
The following instructions are intended
exclusively for
service personnel authorised
by the manufacturer of the burner
.
Burner calibration and preliminary operations are described in
the burner's instruction booklet.
Gas-fired burners are equipped with a gas valve with which the
flow rate can be determined: upon commissioning the actual
thermal flow rate
must always
be controlled by means of the
counter on the main piping, making sure it is not below the
minimum value on the data plate of the boiler.
When the burner is adjusted properly, the following values should
be obtained, measured at the chimney by a specific analyser.
With natural gas:
- CO
= 9÷10%
- Flue gas temperature
125÷140°C
(values for boiler cleaned with water at ~ 70°C).
The flow rate of the fuel should be adjusted to the actual
requirement of the system.
3.23 - REMOVING FLUE GAS TURBULATORS
TRISTAR 2S boilers have been designed to be used at the
declared nominal output.
TRISTAR 2S boilers are equipped with flue gas turbulators inside
each smoke duct (see page 8).
The correct position of the turbulators inside the smoke pipes
determines the heat output of the boiler and therefore the flue
gas temperature at the chimney.
Upon commissioning, after at least 30 minutes, it is advisable to
check the flue gas temperature at the chimney.
Aside from the cleaning tools, each TRISTAR 2S boiler is
equipped with a special extractor which allows to pull the
turbulators from the smoke pipes.
In the reinsertion phase of the turbulators, comply with the
position measurements indicated on page 8.
Detail 1:
Mount the brush rod on the
turbulator extractor.
Pull the pin from the extractor.
Detail 2:
Put the pin in the cross hole using a
hammer.
Detail 3:
Screw the extractor onto the
turbulator.
Detail 4:
Turn until the turbulator is released.
Detail 5:
Remove the turbulator.
Detail 6:
Turn the extractor anticlockwise and
release the turbulator.
The procedure from detail 3 to 6 must be repeated for all turbulators.
Extraction of turbulators
fig. 41