B&C Technologies IM Series Industrial Ironer - Manual (Page 131)

5
FIRING RATES (A)
During operation, burner output varies between:
• MAXIMUM OUTPUT , selected within area A,
• MINIMUM OUTPUT , which must not be lower than the
minimum limit in the diagram.
RS 28/M = 198 MBtu/hr 58 kW
RS 38/M = 266 MBtu/hr 78 kW
RS 50/M = 321 MBtu/hr 94 kW
Important:
The FIRING RATE value range has been obtained con-
sidering an ambient temperature of 68 °F (20 °C), and
an atmospheric pressure of 394” WC and with the com-
bustion head adjusted as shown on page 8.
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 18 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 1388 MBtu/hr:
diameter 20 inch - length 4.9 ft.
(A)
D2259
Comb
ustion chamber pressure
“WC
Comb
ustion chamber pressure
“WC
Comb
ustion chamber pressure
“WC
(B)
D2918
Length (f
eet)
Diameter (inches)
Recommended fur
nace dimensions
121