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4.7.1
Air adjustment
Turn screw 4)(Fig. 15) until the notch identified is aligned with the
front surface 5)(Fig. 15) of the flange.
To facilitate adjustment, loosen the screw 3)
(Fig. 15), adjust and then lock.
CAUTION
4.7.2
Gas adjustment
Loosen the 3 screws 1)(Fig. 15) and turn ring 2) until the notch
identified is aligned with index 3).
Tighten the 3 screws 1) fully down.
Example RS 100/E
MAX output = 3250 MBtu/hr.
If we consult diagram (Fig. 14) we find that for this output, air must
be adjusted using notch 3 (Fig. 15).
Diagram (Fig. 14) shows the ideal settings for the ring 2)(Fig. 15).
If the gas main pressure is too low to reach the maximum output
operation pressure indicated on page 20, and if the ring 2)(Fig. 15)
is not fully open, it can be opened wider by 1 or 2 notches.
Continuing with the previous example, page 20 indicates that for
burner RS 100/E with output of 2200 MBtu/hr a pressure of approx-
imately 2.36 "WC is necessary at test point 6)(Fig. 15).
If the pressure cannot be reached, open the ring 2)(Fig. 15) to
notch 4 or 5.
Make sure that the combustion characteristics are satisfactory and
free of pulsations.
4.7.3
Combustion head calibration (RS 130/E)
Whether the maximum delivery of the burner at high fire operation
is contained in area A or in area B of the firing rate.
If it is in area A then no operation is required.
If, on the other hand, it is in area B:
–
unscrew the screws 1)(Fig. 16) and disassemble the blast
tube 2);
–
move the fixing of the rod 3)(Fig. 16) from position A to position
B, thereby causing the shutter 4) to retract;
–
now refit the blast tube 2)(Fig. 16) and the screws 1).
20028248
Installation
6
5
4
D738
20
1
2
3
D9804
Fig. 15
Fig. 16
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