Unigas K590X, Manual Of Installation - Use - Maintenance

Page: 17 / 120

PART II: INSTALLATION
17
Fitting the burner to the boiler
To perform the installation, proceed as follows:
1
drill the furnace plateas decribed in paragraph (“Overall dimensions”);
2 place the burner towards the furnace plate: lift and move the burner by means of its eyebolts placed on the top side (see”Lifting and
moving the burner”);
3 screw the stud bolts (5) in the plate holes, according to the burner’s drilling plate described on paragraph “Overall dimensions”;
4 place the ceramic fibre rope on the burner flange (if necessary, use a spray adhesive on the flange).
5 install the burner into the boiler;
6 fix the burner to the stud bolts, by means of the fixing nuts, according to the picture below.
7 After fitting the burner to the boiler, ensure that the gap between the blast tube and the refractory lining is sealed with appropriate
insulating material (ceramic fibre cord or refractory cement).
Matching the burner to the boiler
(
low NOx burners)
The burners described in this manual have been tested with combustion chambers that comply with EN676 regulation and whose
dimensions are described in the diagram . In case the burner must be coupled with boilers with a combustion chamber smaller in dia-
meter or shorter than those described in the diagram, please contact the supplier, to verify that a correct matching is possible, with
respect of the application involved. To correctly match the burner to the boiler verify the type of the blast tube . Verify the necessary
input and the pressure in combustion chamber are included in the burner performance curve; otherwise the choice of the burner must
be revised consulting the burner manufacturer. To choose the blast tube lenght consider the following rule, even if it differs from the
instructions of the boiler manufacturer: Cast-iron boilers, three pass flue boilers (with the first pass in the rear part): the blast tube must
protrude at least 150÷200 mm into the combustion chamber.The length of the blast tubes does not always allow this requirement to be
met, and thus it may be necessary to use a suitably-sized spacer to move the burner backwards.
WARNING! Carefully seal the free space between blast tube and the refractory lining with ceramic fibre rope or
other suitable means.
4
1
2
3 4
5
6
7
6
Keys
8
1
Burner
2 Fixing nut
3 Washer
4 Ceramic fibre plait
5 Stud bolt
7 Blast tube
150÷200 mm
5° MAX
Fig. 1
ceramic fibre
refactory wall
Fig. 2