![background image](http://html1.mh-extra.com/html/riello/rs-120-ev-ln/rs-120-ev-ln_installation-use-and-maintenance-instructions_1460055023.webp)
Installation
21
20062968
4.7.3
Gas adjustment
Loosen the 3 screws 4)(Fig. 18) and turn ring 5) until the notch
identified is aligned with index 6).
Tighten the 3 screws 1) fully down.
Example
RS 120/EV LN, burner output = 3750 MBtu/hr
If we consult diagram (Fig. 16) we find that for this output the ad-
justments are:
•
air: R1 = notch 2;
•
gas: R2 = notch 5.
Note
Diagram (Fig. 16) indicates an optimal regulation for a type of boiler
seen in Fig. 4, page 9.
If the pressure of gas allows it, by closing ring nut (Fig. 4, page 9)
a reduction of the formation of NOx is obtained.
Continuing with the previous example, (Fig. 22, page 23) indicates
that for burner with output of 3750 MBtu/hr a pressure of approxi-
mately 6.0” is necessary at test point 3)(Fig. 17). If this pressure
cannot be reached, open the ring 5)(Fig. 17) to notch 4 or 5.
Make sure that the combustion characteristics are satisfactory and
free of pulsations.
Once the combustion head adjustment is completed:
slide the burner on the guides 3) at about 4” from the pipe cou-
pling 4) - burner in the position shown in Fig. 12;
insert the electrode cable, then slide the burner as far as the
pipe coupling - burner in the position shown in Fig. 17;
fix the burner to the pipe coupling with the screws 1).
CAUTION
When fitting the burner on the two guides, it is ad-
visable to gently draw out the high voltage cable un-
til they are slightly taut.
Fig. 18
D7975
Summary of Contents for RS 120/EV LN
Page 2: ......
Page 38: ...20062968 36 Appendix Spare parts A Appendix Spare parts ...
Page 42: ......
Page 43: ......