B&C Technologies IM Series Industrial Ironer - Manual (Page 41)

14. When a good ”crossover” from pilot to main burn occurs regularly, continue.
15. Run the burner up to high fire, set the main regulator pressure for a clean burn with less than
50 ppm CO at 3% to 6% O2 on a combustion analyzer inserted in the flue get the CO as low
as possible. A CO level of 10 ppm or less can be achieved very easily.
16. Drop the burner to the next cam profile screw level and now set the damper position (very
small adjustments) to achieve less than 50ppm CO at 3% to 6% O2 on a combustion analyzer.
Again, a CO level of 10 ppm or less can be achieved very easily.
17. Repeat 15 until you reach the minimum firing point. It may be difficult to get the CO at min
firing to less than 100ppm without running it too rich. The adjustment at this firing point is
very touchy adjust the damper profile screws in very small increments. It may be necessary
to increase the minimum firing point (red cam) on the servo and readjust the pilot pressure
to attain reliable ignition and crossover with the burner now fully tuned.
18. Recheck pilot crossover and pilot stability by lighting and shutting the burner down several
times.
19. With the burner at low fire, increase the setting of the air flow pressure switch until the burner
faults, then reduce the setting by 20%, for example if it cut out at 1.0” WC reduce the setting
to 0.8 WC.
20. Check that the burner does not exceed the maximum firing rate specified for the ironer it is
installed in. If it does, reduce the red cam position until the pressure corresponding to the
max firing rate is measured at the gas pressure test point on top of the burner.
Burner Rolls Roll Size MBTU/hr(max) Mcal/hr
RS50M 3 48 (1200) 2.5 630
RS38M 2 48 (1200) 1.6 403
RS28M 1 48 (1200) 0.8 202
RS38M 2 32 (800) 1.2 302
RS28M 1 32 (800) 0.6 151
Natural Gas Initial Settings Summary
Burner RS28/M RS38/M RS50/M
Pilot Regulator Pressure 6.0”WC (150mmWC) 6.0”WC (150mmWC) 6.0”WC (150mmWC)
Pilot Damper 15deg 20deg 20deg
Main Regulator Pressure 3.0”WC (75mmWC) 3.0”WC (75mmWC) 3.0”WC (75mmWC)
Max Fire Damper 90deg 90deg 90deg
LP Gas Initial Settings Summary
Burner RS28/M RS38/M RS50/M
Pilot Regulator Pressure 3.0”WC (75mmWC) 3.0”WC (75mmWC) 3.0”WC (75mmWC)
Pilot Damper 15deg 20deg 20deg
Main Regulator Pressure 8.7”WC (220mmWC) 11.4”WC (290mmWC) 14.2”WC (360mmWC)
Max Fire Damper 90deg 90deg 90deg
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