B&C Technologies IM Series Industrial Ironer - Manual (Page 40)

3.11 Riello Burner Setup
IM Thermal Fluid Ironer, Initial burner setup procedure:
NOTE: For LP Gas you must install an LP Gas kit in the burner and follow the kit instruc-
tions. Note that with LP gas the required pilot pressure, main regulator pressure, and delivery
pressure for max firing rate are very different.
1. Set air bypass screw and gas disk at according to the guidelines in the Riello Manual for the
maximum required firing rate. Note that the Gas disk should always be set at 0 when firing
LP gas, only the air bypass is adjusted.
2. Remove and inspect the flame holder assembly verify the spacings specified in the manual
for the pilot, flame rod, and ignition electrode. Make sure the flame rod is in the new position
specified in the Riello service bulletin.
3. Don’t adjust the red, blue, and orange cams on the damper servo, leave them at the 90-0-15
factory positions.
4. The gas supply pressure feeding the machine should be 2 psi (140mbar). Never exceed 5psi
as this will damage the pilot regulator.
5. If this is a new startup, set the pilot regulator to 6 W.C. (15 mbar) for natural gas and the air
damper at pilot to about 15 degrees on the damper dial (this is adjusted with the cam profile
screws).
6. Set the main regulator on the Krom-Schroder to about 3.0 W.C. (7.4 mbar) for natural gas.
7. If this is a new startup, set the damper so it is fully open (at 90 degrees on the damper dial)
at 90 degrees on the servo cam.
8. Set the jumper on burner terminal 30–V11 to the 30–VP position, or install a switch for easier
future adjustment.
9. Make sure the throat on both Krom-Schroder solenoids is fully open (this adjustment is at
the top of each solenoid).
10. Set the burner mode switch to ”manual”
11. Now try to light the burner – the pilot should light and nothing else. Manipulate the pilot
regulator pressure in small increments until a stable clean pilot flame that relights easily
results.
12. With a stable pilot set the jumper back on 30–V11 (or flip the pilot switch if one was installed).
13. Now relight the burner, still in ”manual mode”, and watch for the main burn to start. The
pilot will now light for a few seconds, then the main burner will light, then the pilot will
turn off after about 3 seconds. If the burner blows out when the main valve turns on then
reduce the gas pressure setting on the Krom-Schroder regulator and try again. If a little faint
blue main flame or no main flame appears, then decrease the damper setting slowly until a
successful transfer from pilot to low-fire results.
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