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(A)
(B)
Diameter (inches)
FIRING RATE (A)
The RL 70 - 100 - 130 Model burners can work in two
ways: Low and High fire.
LOW FIRE DELIVERY must be selected within area A
of the adjacent diagrams.
HIGH FIRE DELIVERY must be selected within area B
(and C for model RL 130). This area provides the max-
imum delivery of the burner in relation to the pressure
in the combustion chamber.
The firing rate may be found by plotting a vertical line
from the desired delivery and a horizontal line from the
pressure in the combustion chamber. The intersection
of these two lines is the firing rate which must lie within
area B. In order to also utilize area C (RL 130) it is nec-
essary to perform the calibration of the combustion
head as explained on page 6.
Important:
the FIRING RATE area values have been obtained
considering an ambient temperature of 68° F (20 °C),
and an atmospheric pressure of 394" WC (approx. 329
ft above sea level) and with the combustion head ad-
justed as shown on page 7.
Note:
The FIRING RATE areas given in figure (A) have been
reduced by 10% with respect to the maximum range that
can be reached.
Consult Appendix on page 16 for operation at different
surrounding temperatures and/or altitudes.
MINIMUM FURNACE DIMENSIONS (B)
The firing rates were set in relation to certified test boil-
ers.
Figure (B) indicates the diameter and length of the test
combustion chamber.
Example
Output 2579 MBTU/hr:
diameter 24 inch - length 6.6 ft.
D2325
D2919
5
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