Product Overview | 6570 HiVAM ™
CONFIGURATION OPTIONS — 90° or 45° "Y" main air connection. — Flanged or slip-on main air connection. When ordering, specify choice of options as follows: (P) for spark ignited pilot (Y) for 45° air connection (T) for 90° air connection (F) for flanged air connection (SW) slip-on or welding air connection
APPLICATION HiVAM™ burners are a natural for installations requiring a portable burner to heat large volumes of air. Their high excess air ratio capabilities and lightweight all- metal construction make them ideal for such applications as drying refractory-lined furnaces and vessels, for permanent or temporary mounting on rotary dryers and calciners, and for other jobs where a self-contained portable burner or air heater avoids need for expensive mounting, installation, sealing, etc
Example: 6570-12-PTF Burner complete with pilot, 90° air connection and flanged air connection. Order 1813-01 Sensitrol Oil Valve. separately.
See Bulletin 4570 for the "gas only" version. OPERATION
HiVAM™ Burners must be operated with at least 50% excess air at all firing rates, and are suitable for furnace temperatures up to 1900 °F (1038 °C). They can be used with preheated air up to 500 °F (260 °C). Light oil operation requires a constant 35"w.c. /86 mbar atom- izing air pressure supply at the burner. For widest stability limits on gas a constant air supply must be introduced through the atomizing air connection: 24"w.c. /60 mbar air pressure for the 6570-9, and 17"w.c. /43 mbar air pressure for the 6570-12. Gas pressure requirements are 13"w.c. (32 mbar) or less for natu- ral gas (0.6 sp gr) at design capacity for either size of burner. Consult North American for use with fuels other than light oil or natural gas. Main air and fuel can be modulated together using crossconnected fuel regulators; or fuel only control (with constant air) can be used for maximum thermal turndown. IGNITION Main flame ignition is normally by a 4021-16 spark ignited pilot tip furnished as an integral part of the burner. Customer supplies a 4031 Pilot Mixer, regulator, and shutoff valves. 6570 Dual-Fuel™ Burners must use the spark ignited pilot. Direct spark ignition is not available for the 6570. FLAME SUPERVISION 6570 Dual-Fuel™ HiVAM™ Burners use two UV detectors. One sights the pilot through the pilot mixture tube and the other sights the main flame, gas or oil. The pilot and pilot scanner must be interrupted after main flame is established.
"T" 90° Flanged (TF)
"T" 90° Unflanged (TSW)
"Y" 45° Flanged (YF)
"Y" 45° Unflanged (YSW)
ALTERNATIVE BURNER OPTIONS
An alternative to the 6570 HiVAM is a 6575 HiRAM engineered with a special medium velocity (MV) metal tile. This style 6575 weighs about the same as a 4570 burner and is also free of refractory.
While 6570 burners have some advantages, 6575 burners:
— Are available in more sizes — Do not require atomizing air for gas operation — Do not require atomizing air for gas operation. — Are available with special engineered 310 or 330 sst (MV or HV) tiles — Can be operated closer to stoichiometric ratio
Bulletin 6570 Page 2
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